/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:35:01,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:35:01,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:35:01,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 14:35:01,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 14:35:01,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 14:35:01,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 14:35:01,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 14:35:01,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 14:35:01,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 14:35:01,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 14:35:01,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 14:35:01,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 14:35:01,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 14:35:01,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 14:35:01,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 14:35:01,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 14:35:01,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 14:35:01,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 14:35:01,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 14:35:01,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 14:35:01,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 14:35:01,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 14:35:01,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 14:35:01,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 14:35:01,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 14:35:01,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 14:35:01,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 14:35:01,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 14:35:01,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 14:35:01,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 14:35:01,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 14:35:01,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 14:35:01,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 14:35:01,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 14:35:01,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 14:35:01,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 14:35:01,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 14:35:01,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:35:01,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:35:01,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:35:01,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 14:35:01,528 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:35:01,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:35:01,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:35:01,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:35:01,529 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:35:01,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:35:01,530 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:35:01,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:35:01,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:35:01,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:35:01,532 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:35:01,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:35:01,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:35:01,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:35:01,829 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:35:01,830 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:35:01,830 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-03-11 14:35:01,832 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-03-11 14:35:01,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:35:01,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:35:01,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:35:01,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:35:01,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:35:01,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:35:01,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:35:01,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:35:01,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:35:01,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... [2021-03-11 14:35:01,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:35:01,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:35:01,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:35:01,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:35:01,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:35:01,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-03-11 14:35:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-03-11 14:35:01,959 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-03-11 14:35:01,959 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-03-11 14:35:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-03-11 14:35:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-03-11 14:35:01,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-03-11 14:35:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-03-11 14:35:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-03-11 14:35:01,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-03-11 14:35:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-03-11 14:35:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-03-11 14:35:01,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-03-11 14:35:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-03-11 14:35:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-03-11 14:35:01,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 14:35:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:35:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:35:01,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-03-11 14:35:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-03-11 14:35:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-03-11 14:35:01,961 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-03-11 14:35:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-03-11 14:35:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-03-11 14:35:01,962 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:35:02,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:35:02,149 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:35:02,150 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:02 BoogieIcfgContainer [2021-03-11 14:35:02,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:35:02,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:35:02,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:35:02,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:35:02,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:35:01" (1/2) ... [2021-03-11 14:35:02,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f713831 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:02, skipping insertion in model container [2021-03-11 14:35:02,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:02" (2/2) ... [2021-03-11 14:35:02,154 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-03-11 14:35:02,158 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:35:02,158 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:35:02,160 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 14:35:02,161 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:35:02,310 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-03-11 14:35:02,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-03-11 14:35:02,349 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:35:02,349 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:35:02,350 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:35:02,350 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:35:02,350 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:35:02,350 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:35:02,350 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:35:02,350 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:35:02,361 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:35:02,373 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 80 transitions, 342 flow [2021-03-11 14:35:02,377 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 80 transitions, 342 flow [2021-03-11 14:35:02,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-03-11 14:35:02,496 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-03-11 14:35:02,496 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-03-11 14:35:02,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-03-11 14:35:02,509 INFO L116 LiptonReduction]: Number of co-enabled transitions 1260 [2021-03-11 14:35:02,659 INFO L131 LiptonReduction]: Checked pairs total: 4368 [2021-03-11 14:35:02,660 INFO L133 LiptonReduction]: Total number of compositions: 8 [2021-03-11 14:35:02,668 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 72 transitions, 326 flow [2021-03-11 14:35:02,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2316 states, 2314 states have (on average 4.605012964563526) internal successors, (10656), 2315 states have internal predecessors, (10656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 2316 states, 2314 states have (on average 4.605012964563526) internal successors, (10656), 2315 states have internal predecessors, (10656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:02,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:02,881 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:02,881 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:02,882 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1837414215, now seen corresponding path program 1 times [2021-03-11 14:35:02,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:02,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125915239] [2021-03-11 14:35:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:02,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:02,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:02,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:02,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125915239] [2021-03-11 14:35:02,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:02,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:02,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282212658] [2021-03-11 14:35:03,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:03,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:03,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,025 INFO L87 Difference]: Start difference. First operand has 2316 states, 2314 states have (on average 4.605012964563526) internal successors, (10656), 2315 states have internal predecessors, (10656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,101 INFO L93 Difference]: Finished difference Result 1820 states and 7856 transitions. [2021-03-11 14:35:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:03,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,133 INFO L225 Difference]: With dead ends: 1820 [2021-03-11 14:35:03,133 INFO L226 Difference]: Without dead ends: 1819 [2021-03-11 14:35:03,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2021-03-11 14:35:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2021-03-11 14:35:03,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 4.32068206820682) internal successors, (7855), 1818 states have internal predecessors, (7855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 7855 transitions. [2021-03-11 14:35:03,259 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 7855 transitions. Word has length 22 [2021-03-11 14:35:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,260 INFO L480 AbstractCegarLoop]: Abstraction has 1819 states and 7855 transitions. [2021-03-11 14:35:03,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 7855 transitions. [2021-03-11 14:35:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:03,267 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,267 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:35:03,268 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,268 INFO L82 PathProgramCache]: Analyzing trace with hash 489149485, now seen corresponding path program 1 times [2021-03-11 14:35:03,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766604556] [2021-03-11 14:35:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:03,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766604556] [2021-03-11 14:35:03,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:03,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251013554] [2021-03-11 14:35:03,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:03,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:03,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,311 INFO L87 Difference]: Start difference. First operand 1819 states and 7855 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,332 INFO L93 Difference]: Finished difference Result 1275 states and 5199 transitions. [2021-03-11 14:35:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:03,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,340 INFO L225 Difference]: With dead ends: 1275 [2021-03-11 14:35:03,340 INFO L226 Difference]: Without dead ends: 1275 [2021-03-11 14:35:03,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-03-11 14:35:03,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1275. [2021-03-11 14:35:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 4.080847723704866) internal successors, (5199), 1274 states have internal predecessors, (5199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 5199 transitions. [2021-03-11 14:35:03,376 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 5199 transitions. Word has length 22 [2021-03-11 14:35:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,377 INFO L480 AbstractCegarLoop]: Abstraction has 1275 states and 5199 transitions. [2021-03-11 14:35:03,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 5199 transitions. [2021-03-11 14:35:03,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:03,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:35:03,384 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,391 INFO L82 PathProgramCache]: Analyzing trace with hash -720932653, now seen corresponding path program 1 times [2021-03-11 14:35:03,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720608423] [2021-03-11 14:35:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:03,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720608423] [2021-03-11 14:35:03,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:03,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788627111] [2021-03-11 14:35:03,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:03,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:03,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,410 INFO L87 Difference]: Start difference. First operand 1275 states and 5199 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,427 INFO L93 Difference]: Finished difference Result 835 states and 3307 transitions. [2021-03-11 14:35:03,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:03,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,433 INFO L225 Difference]: With dead ends: 835 [2021-03-11 14:35:03,433 INFO L226 Difference]: Without dead ends: 835 [2021-03-11 14:35:03,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-03-11 14:35:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2021-03-11 14:35:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 3.9652278177458036) internal successors, (3307), 834 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 3307 transitions. [2021-03-11 14:35:03,458 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 3307 transitions. Word has length 22 [2021-03-11 14:35:03,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,458 INFO L480 AbstractCegarLoop]: Abstraction has 835 states and 3307 transitions. [2021-03-11 14:35:03,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 3307 transitions. [2021-03-11 14:35:03,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:03,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,460 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 14:35:03,461 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1106211485, now seen corresponding path program 1 times [2021-03-11 14:35:03,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702259198] [2021-03-11 14:35:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:03,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702259198] [2021-03-11 14:35:03,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:03,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162616728] [2021-03-11 14:35:03,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:03,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:03,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,519 INFO L87 Difference]: Start difference. First operand 835 states and 3307 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,527 INFO L93 Difference]: Finished difference Result 575 states and 2209 transitions. [2021-03-11 14:35:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:03,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,530 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:35:03,531 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:35:03,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:35:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2021-03-11 14:35:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 574 states have (on average 3.8484320557491287) internal successors, (2209), 574 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 2209 transitions. [2021-03-11 14:35:03,558 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 2209 transitions. Word has length 22 [2021-03-11 14:35:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,558 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 2209 transitions. [2021-03-11 14:35:03,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 2209 transitions. [2021-03-11 14:35:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:03,560 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,560 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 14:35:03,560 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1415964651, now seen corresponding path program 1 times [2021-03-11 14:35:03,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884086969] [2021-03-11 14:35:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:03,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:03,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:03,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:03,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:03,715 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:03,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:03,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:03,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:03,783 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:03,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:03,813 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:03,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884086969] [2021-03-11 14:35:03,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:03,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156556835] [2021-03-11 14:35:03,852 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:03,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:03,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:03,853 INFO L87 Difference]: Start difference. First operand 575 states and 2209 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,957 INFO L93 Difference]: Finished difference Result 889 states and 2970 transitions. [2021-03-11 14:35:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,961 INFO L225 Difference]: With dead ends: 889 [2021-03-11 14:35:03,961 INFO L226 Difference]: Without dead ends: 873 [2021-03-11 14:35:03,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 178.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-03-11 14:35:03,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 585. [2021-03-11 14:35:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 3.8424657534246576) internal successors, (2244), 584 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 2244 transitions. [2021-03-11 14:35:03,978 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 2244 transitions. Word has length 22 [2021-03-11 14:35:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:03,979 INFO L480 AbstractCegarLoop]: Abstraction has 585 states and 2244 transitions. [2021-03-11 14:35:03,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 2244 transitions. [2021-03-11 14:35:03,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:03,980 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:03,980 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:03,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 14:35:03,980 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:03,981 INFO L82 PathProgramCache]: Analyzing trace with hash 194290379, now seen corresponding path program 1 times [2021-03-11 14:35:03,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:03,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429727278] [2021-03-11 14:35:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:03,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:03,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:03,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:03,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429727278] [2021-03-11 14:35:03,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:03,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:03,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827875326] [2021-03-11 14:35:03,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:03,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:03,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:03,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:03,993 INFO L87 Difference]: Start difference. First operand 585 states and 2244 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:03,997 INFO L93 Difference]: Finished difference Result 519 states and 1918 transitions. [2021-03-11 14:35:03,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:03,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:03,999 INFO L225 Difference]: With dead ends: 519 [2021-03-11 14:35:04,000 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:35:04,000 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:35:04,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-03-11 14:35:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 3.7027027027027026) internal successors, (1918), 518 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1918 transitions. [2021-03-11 14:35:04,012 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1918 transitions. Word has length 22 [2021-03-11 14:35:04,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,012 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 1918 transitions. [2021-03-11 14:35:04,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,012 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1918 transitions. [2021-03-11 14:35:04,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:04,014 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,014 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,014 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 14:35:04,014 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1570456793, now seen corresponding path program 2 times [2021-03-11 14:35:04,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181962189] [2021-03-11 14:35:04,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,061 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,116 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:04,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:04,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:04,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:04,166 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:04,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181962189] [2021-03-11 14:35:04,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:04,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477152650] [2021-03-11 14:35:04,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:04,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:04,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,198 INFO L87 Difference]: Start difference. First operand 519 states and 1918 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,270 INFO L93 Difference]: Finished difference Result 786 states and 2508 transitions. [2021-03-11 14:35:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,274 INFO L225 Difference]: With dead ends: 786 [2021-03-11 14:35:04,274 INFO L226 Difference]: Without dead ends: 771 [2021-03-11 14:35:04,275 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-03-11 14:35:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 518. [2021-03-11 14:35:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.7059961315280465) internal successors, (1916), 517 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1916 transitions. [2021-03-11 14:35:04,289 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1916 transitions. Word has length 22 [2021-03-11 14:35:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,290 INFO L480 AbstractCegarLoop]: Abstraction has 518 states and 1916 transitions. [2021-03-11 14:35:04,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1916 transitions. [2021-03-11 14:35:04,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:04,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 14:35:04,291 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1922310917, now seen corresponding path program 3 times [2021-03-11 14:35:04,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152089825] [2021-03-11 14:35:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,391 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,424 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:04,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:04,477 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:04,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:04,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:04,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152089825] [2021-03-11 14:35:04,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:04,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124917049] [2021-03-11 14:35:04,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:04,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:04,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,529 INFO L87 Difference]: Start difference. First operand 518 states and 1916 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,609 INFO L93 Difference]: Finished difference Result 797 states and 2534 transitions. [2021-03-11 14:35:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:04,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,614 INFO L225 Difference]: With dead ends: 797 [2021-03-11 14:35:04,615 INFO L226 Difference]: Without dead ends: 783 [2021-03-11 14:35:04,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-03-11 14:35:04,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 522. [2021-03-11 14:35:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.690978886756238) internal successors, (1923), 521 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1923 transitions. [2021-03-11 14:35:04,629 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1923 transitions. Word has length 22 [2021-03-11 14:35:04,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,629 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 1923 transitions. [2021-03-11 14:35:04,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,629 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1923 transitions. [2021-03-11 14:35:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:04,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,632 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 14:35:04,632 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1995618329, now seen corresponding path program 4 times [2021-03-11 14:35:04,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484072597] [2021-03-11 14:35:04,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,693 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,714 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,742 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:04,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:04,774 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:04,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:04,798 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:04,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:04,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484072597] [2021-03-11 14:35:04,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:04,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:04,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351678515] [2021-03-11 14:35:04,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:04,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:04,821 INFO L87 Difference]: Start difference. First operand 522 states and 1923 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:04,881 INFO L93 Difference]: Finished difference Result 805 states and 2549 transitions. [2021-03-11 14:35:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:04,885 INFO L225 Difference]: With dead ends: 805 [2021-03-11 14:35:04,885 INFO L226 Difference]: Without dead ends: 779 [2021-03-11 14:35:04,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-03-11 14:35:04,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 518. [2021-03-11 14:35:04,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.702127659574468) internal successors, (1914), 517 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1914 transitions. [2021-03-11 14:35:04,900 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1914 transitions. Word has length 22 [2021-03-11 14:35:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:04,901 INFO L480 AbstractCegarLoop]: Abstraction has 518 states and 1914 transitions. [2021-03-11 14:35:04,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1914 transitions. [2021-03-11 14:35:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:04,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:04,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:04,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 14:35:04,903 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:04,903 INFO L82 PathProgramCache]: Analyzing trace with hash 476365205, now seen corresponding path program 5 times [2021-03-11 14:35:04,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:04,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058046471] [2021-03-11 14:35:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:04,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:04,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:04,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:04,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:04,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:04,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:04,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:04,956 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:04,992 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:04,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:05,016 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:05,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:05,040 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:05,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058046471] [2021-03-11 14:35:05,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:05,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982632266] [2021-03-11 14:35:05,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:05,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,062 INFO L87 Difference]: Start difference. First operand 518 states and 1914 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,123 INFO L93 Difference]: Finished difference Result 797 states and 2532 transitions. [2021-03-11 14:35:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,126 INFO L225 Difference]: With dead ends: 797 [2021-03-11 14:35:05,126 INFO L226 Difference]: Without dead ends: 783 [2021-03-11 14:35:05,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-03-11 14:35:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 522. [2021-03-11 14:35:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 521 states have (on average 3.6871401151631478) internal successors, (1921), 521 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 1921 transitions. [2021-03-11 14:35:05,140 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 1921 transitions. Word has length 22 [2021-03-11 14:35:05,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,140 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 1921 transitions. [2021-03-11 14:35:05,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,140 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 1921 transitions. [2021-03-11 14:35:05,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:05,141 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,141 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 14:35:05,141 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash -61490373, now seen corresponding path program 6 times [2021-03-11 14:35:05,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959883862] [2021-03-11 14:35:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,174 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,191 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:05,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:05,229 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:05,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:05,257 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:05,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:05,288 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:05,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:05,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959883862] [2021-03-11 14:35:05,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:05,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208633416] [2021-03-11 14:35:05,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:05,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:05,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,311 INFO L87 Difference]: Start difference. First operand 522 states and 1921 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,372 INFO L93 Difference]: Finished difference Result 805 states and 2547 transitions. [2021-03-11 14:35:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,375 INFO L225 Difference]: With dead ends: 805 [2021-03-11 14:35:05,376 INFO L226 Difference]: Without dead ends: 777 [2021-03-11 14:35:05,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-03-11 14:35:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 516. [2021-03-11 14:35:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 3.7067961165048544) internal successors, (1909), 515 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 1909 transitions. [2021-03-11 14:35:05,392 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 1909 transitions. Word has length 22 [2021-03-11 14:35:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,393 INFO L480 AbstractCegarLoop]: Abstraction has 516 states and 1909 transitions. [2021-03-11 14:35:05,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 1909 transitions. [2021-03-11 14:35:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:05,395 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,395 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 14:35:05,395 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1376963333, now seen corresponding path program 7 times [2021-03-11 14:35:05,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871781396] [2021-03-11 14:35:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,452 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:05,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:05,486 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,506 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:05,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:05,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871781396] [2021-03-11 14:35:05,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:05,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300553015] [2021-03-11 14:35:05,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:05,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:05,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,571 INFO L87 Difference]: Start difference. First operand 516 states and 1909 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,654 INFO L93 Difference]: Finished difference Result 774 states and 2479 transitions. [2021-03-11 14:35:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:05,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,658 INFO L225 Difference]: With dead ends: 774 [2021-03-11 14:35:05,658 INFO L226 Difference]: Without dead ends: 760 [2021-03-11 14:35:05,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-03-11 14:35:05,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 518. [2021-03-11 14:35:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 3.7001934235976788) internal successors, (1913), 517 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1913 transitions. [2021-03-11 14:35:05,672 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1913 transitions. Word has length 22 [2021-03-11 14:35:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,672 INFO L480 AbstractCegarLoop]: Abstraction has 518 states and 1913 transitions. [2021-03-11 14:35:05,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1913 transitions. [2021-03-11 14:35:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:05,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 14:35:05,674 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1531455475, now seen corresponding path program 8 times [2021-03-11 14:35:05,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943736385] [2021-03-11 14:35:05,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,695 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:05,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:05,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:05,791 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:05,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:05,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943736385] [2021-03-11 14:35:05,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:05,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:05,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193687359] [2021-03-11 14:35:05,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:05,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:05,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:05,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:05,815 INFO L87 Difference]: Start difference. First operand 518 states and 1913 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:05,872 INFO L93 Difference]: Finished difference Result 774 states and 2478 transitions. [2021-03-11 14:35:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:05,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:05,875 INFO L225 Difference]: With dead ends: 774 [2021-03-11 14:35:05,875 INFO L226 Difference]: Without dead ends: 759 [2021-03-11 14:35:05,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:05,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2021-03-11 14:35:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 517. [2021-03-11 14:35:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 3.703488372093023) internal successors, (1911), 516 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1911 transitions. [2021-03-11 14:35:05,887 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1911 transitions. Word has length 22 [2021-03-11 14:35:05,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:05,888 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 1911 transitions. [2021-03-11 14:35:05,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:05,888 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1911 transitions. [2021-03-11 14:35:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:05,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:05,889 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:05,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 14:35:05,889 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:05,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:05,889 INFO L82 PathProgramCache]: Analyzing trace with hash -223474521, now seen corresponding path program 9 times [2021-03-11 14:35:05,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:05,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174620866] [2021-03-11 14:35:05,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:05,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:05,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:05,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:05,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:05,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:05,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:05,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:05,946 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:05,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:05,966 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:05,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:05,987 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:05,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:06,019 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:06,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174620866] [2021-03-11 14:35:06,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:06,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340912576] [2021-03-11 14:35:06,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:06,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:06,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,042 INFO L87 Difference]: Start difference. First operand 517 states and 1911 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,112 INFO L93 Difference]: Finished difference Result 776 states and 2484 transitions. [2021-03-11 14:35:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:06,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,115 INFO L225 Difference]: With dead ends: 776 [2021-03-11 14:35:06,115 INFO L226 Difference]: Without dead ends: 762 [2021-03-11 14:35:06,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2021-03-11 14:35:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 519. [2021-03-11 14:35:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 3.694980694980695) internal successors, (1914), 518 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1914 transitions. [2021-03-11 14:35:06,127 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1914 transitions. Word has length 22 [2021-03-11 14:35:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,128 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 1914 transitions. [2021-03-11 14:35:06,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1914 transitions. [2021-03-11 14:35:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:06,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 14:35:06,129 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1990943973, now seen corresponding path program 1 times [2021-03-11 14:35:06,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679850811] [2021-03-11 14:35:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:35:06,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679850811] [2021-03-11 14:35:06,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 14:35:06,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298536387] [2021-03-11 14:35:06,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:35:06,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:35:06,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:06,141 INFO L87 Difference]: Start difference. First operand 519 states and 1914 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,144 INFO L93 Difference]: Finished difference Result 391 states and 1370 transitions. [2021-03-11 14:35:06,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:35:06,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:06,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,146 INFO L225 Difference]: With dead ends: 391 [2021-03-11 14:35:06,146 INFO L226 Difference]: Without dead ends: 391 [2021-03-11 14:35:06,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:35:06,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-03-11 14:35:06,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-03-11 14:35:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5128205128205128) internal successors, (1370), 390 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1370 transitions. [2021-03-11 14:35:06,154 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:06,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,154 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1370 transitions. [2021-03-11 14:35:06,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,154 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1370 transitions. [2021-03-11 14:35:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:06,155 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,155 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 14:35:06,155 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash -726016073, now seen corresponding path program 10 times [2021-03-11 14:35:06,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177293392] [2021-03-11 14:35:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,182 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,201 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:06,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:06,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:06,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:06,234 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:06,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:06,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:06,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177293392] [2021-03-11 14:35:06,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:06,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184192266] [2021-03-11 14:35:06,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:06,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:06,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,286 INFO L87 Difference]: Start difference. First operand 391 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,363 INFO L93 Difference]: Finished difference Result 580 states and 1747 transitions. [2021-03-11 14:35:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,366 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:35:06,366 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:06,366 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 389. [2021-03-11 14:35:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.520618556701031) internal successors, (1366), 388 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1366 transitions. [2021-03-11 14:35:06,379 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,379 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1366 transitions. [2021-03-11 14:35:06,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1366 transitions. [2021-03-11 14:35:06,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:06,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 14:35:06,380 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1669420233, now seen corresponding path program 11 times [2021-03-11 14:35:06,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871589877] [2021-03-11 14:35:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,421 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,448 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:06,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:06,462 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,480 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:06,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:06,506 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:06,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871589877] [2021-03-11 14:35:06,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:06,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615006821] [2021-03-11 14:35:06,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:06,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:06,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,529 INFO L87 Difference]: Start difference. First operand 389 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,596 INFO L93 Difference]: Finished difference Result 576 states and 1739 transitions. [2021-03-11 14:35:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:06,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,598 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:35:06,598 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:35:06,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:35:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 390. [2021-03-11 14:35:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.51413881748072) internal successors, (1367), 389 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1367 transitions. [2021-03-11 14:35:06,607 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,607 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1367 transitions. [2021-03-11 14:35:06,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1367 transitions. [2021-03-11 14:35:06,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:06,609 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,609 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 14:35:06,609 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,609 INFO L82 PathProgramCache]: Analyzing trace with hash -58479275, now seen corresponding path program 12 times [2021-03-11 14:35:06,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952745869] [2021-03-11 14:35:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,652 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:06,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:06,666 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:06,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:06,684 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:06,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:06,720 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:06,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952745869] [2021-03-11 14:35:06,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:06,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337513720] [2021-03-11 14:35:06,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:06,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:06,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,748 INFO L87 Difference]: Start difference. First operand 390 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:06,839 INFO L93 Difference]: Finished difference Result 577 states and 1740 transitions. [2021-03-11 14:35:06,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:06,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:06,842 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:35:06,842 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:06,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:06,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:06,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 388. [2021-03-11 14:35:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5245478036175713) internal successors, (1364), 387 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1364 transitions. [2021-03-11 14:35:06,851 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:06,851 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1364 transitions. [2021-03-11 14:35:06,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1364 transitions. [2021-03-11 14:35:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:06,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:06,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:06,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 14:35:06,852 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:06,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:06,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1706609459, now seen corresponding path program 13 times [2021-03-11 14:35:06,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:06,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033752465] [2021-03-11 14:35:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:06,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:06,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:06,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:06,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:06,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:06,879 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:06,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:06,897 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:06,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:06,920 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:06,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:06,938 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:06,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:06,963 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:06,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:06,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033752465] [2021-03-11 14:35:06,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:06,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:06,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151926005] [2021-03-11 14:35:06,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:06,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:06,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:06,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:06,986 INFO L87 Difference]: Start difference. First operand 388 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,060 INFO L93 Difference]: Finished difference Result 595 states and 1784 transitions. [2021-03-11 14:35:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:07,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,063 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:35:07,063 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:07,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 393. [2021-03-11 14:35:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.5127551020408165) internal successors, (1377), 392 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1377 transitions. [2021-03-11 14:35:07,072 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1377 transitions. Word has length 22 [2021-03-11 14:35:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,072 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1377 transitions. [2021-03-11 14:35:07,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1377 transitions. [2021-03-11 14:35:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:07,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,073 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 14:35:07,073 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 2085816285, now seen corresponding path program 14 times [2021-03-11 14:35:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768360385] [2021-03-11 14:35:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:07,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:07,104 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,123 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,152 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:07,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:07,170 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:07,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:07,205 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:07,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768360385] [2021-03-11 14:35:07,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:07,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381902998] [2021-03-11 14:35:07,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:07,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:07,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,231 INFO L87 Difference]: Start difference. First operand 393 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,305 INFO L93 Difference]: Finished difference Result 594 states and 1780 transitions. [2021-03-11 14:35:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:07,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,308 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:07,308 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:07,308 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 391. [2021-03-11 14:35:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.517948717948718) internal successors, (1372), 390 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1372 transitions. [2021-03-11 14:35:07,317 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,317 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1372 transitions. [2021-03-11 14:35:07,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1372 transitions. [2021-03-11 14:35:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:07,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 14:35:07,318 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,318 INFO L82 PathProgramCache]: Analyzing trace with hash 400174661, now seen corresponding path program 15 times [2021-03-11 14:35:07,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511305837] [2021-03-11 14:35:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,335 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:07,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:07,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,396 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:07,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:07,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:07,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:07,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:07,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511305837] [2021-03-11 14:35:07,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:07,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808009778] [2021-03-11 14:35:07,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:07,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,496 INFO L87 Difference]: Start difference. First operand 391 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,588 INFO L93 Difference]: Finished difference Result 603 states and 1798 transitions. [2021-03-11 14:35:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:07,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,590 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:35:07,590 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:35:07,590 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:35:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 395. [2021-03-11 14:35:07,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.5) internal successors, (1379), 394 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1379 transitions. [2021-03-11 14:35:07,598 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1379 transitions. Word has length 22 [2021-03-11 14:35:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,598 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1379 transitions. [2021-03-11 14:35:07,598 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,598 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1379 transitions. [2021-03-11 14:35:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:07,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,599 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 14:35:07,599 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,600 INFO L82 PathProgramCache]: Analyzing trace with hash 473482073, now seen corresponding path program 16 times [2021-03-11 14:35:07,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880555337] [2021-03-11 14:35:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:07,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:07,636 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,652 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:07,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:07,708 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:07,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:07,733 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:07,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880555337] [2021-03-11 14:35:07,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:07,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358522499] [2021-03-11 14:35:07,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:07,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:07,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,758 INFO L87 Difference]: Start difference. First operand 395 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:07,821 INFO L93 Difference]: Finished difference Result 608 states and 1804 transitions. [2021-03-11 14:35:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:07,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:07,823 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:35:07,823 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:35:07,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:07,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:35:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 391. [2021-03-11 14:35:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.51025641025641) internal successors, (1369), 390 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1369 transitions. [2021-03-11 14:35:07,834 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1369 transitions. Word has length 22 [2021-03-11 14:35:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:07,834 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1369 transitions. [2021-03-11 14:35:07,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1369 transitions. [2021-03-11 14:35:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:07,835 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:07,835 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:07,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 14:35:07,835 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1118113701, now seen corresponding path program 17 times [2021-03-11 14:35:07,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:07,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002644983] [2021-03-11 14:35:07,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:07,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:07,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:07,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:07,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:07,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:07,883 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:07,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:07,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:07,924 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:07,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:07,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:07,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:07,974 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:07,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:07,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002644983] [2021-03-11 14:35:07,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:07,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:07,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999619499] [2021-03-11 14:35:07,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:07,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:07,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:07,997 INFO L87 Difference]: Start difference. First operand 391 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,079 INFO L93 Difference]: Finished difference Result 600 states and 1788 transitions. [2021-03-11 14:35:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:08,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:08,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,081 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:35:08,081 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:08,081 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 394. [2021-03-11 14:35:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.49618320610687) internal successors, (1374), 393 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1374 transitions. [2021-03-11 14:35:08,093 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,093 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1374 transitions. [2021-03-11 14:35:08,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1374 transitions. [2021-03-11 14:35:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:08,094 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,094 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 14:35:08,094 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash 198043603, now seen corresponding path program 18 times [2021-03-11 14:35:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131836812] [2021-03-11 14:35:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:08,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:08,125 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:08,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:08,166 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:08,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:08,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:08,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:08,221 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:08,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131836812] [2021-03-11 14:35:08,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:08,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890378939] [2021-03-11 14:35:08,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:08,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:08,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,251 INFO L87 Difference]: Start difference. First operand 394 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,314 INFO L93 Difference]: Finished difference Result 606 states and 1797 transitions. [2021-03-11 14:35:08,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:08,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:08,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,316 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:35:08,316 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:08,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:08,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 388. [2021-03-11 14:35:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5193798449612403) internal successors, (1362), 387 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1362 transitions. [2021-03-11 14:35:08,328 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,328 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1362 transitions. [2021-03-11 14:35:08,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1362 transitions. [2021-03-11 14:35:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:08,329 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,329 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 14:35:08,329 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1226521093, now seen corresponding path program 19 times [2021-03-11 14:35:08,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31873] [2021-03-11 14:35:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:08,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:08,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,387 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:08,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:08,428 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:08,451 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:08,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31873] [2021-03-11 14:35:08,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:08,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004928957] [2021-03-11 14:35:08,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:08,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:08,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,473 INFO L87 Difference]: Start difference. First operand 388 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,528 INFO L93 Difference]: Finished difference Result 584 states and 1754 transitions. [2021-03-11 14:35:08,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:08,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:08,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,529 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:35:08,529 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:35:08,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:08,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:35:08,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 391. [2021-03-11 14:35:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.51025641025641) internal successors, (1369), 390 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1369 transitions. [2021-03-11 14:35:08,538 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1369 transitions. Word has length 22 [2021-03-11 14:35:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,538 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1369 transitions. [2021-03-11 14:35:08,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1369 transitions. [2021-03-11 14:35:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:08,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 14:35:08,539 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,540 INFO L82 PathProgramCache]: Analyzing trace with hash 384419865, now seen corresponding path program 20 times [2021-03-11 14:35:08,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051890467] [2021-03-11 14:35:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,561 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:08,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:08,571 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,613 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:08,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:08,636 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:08,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:08,661 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:08,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:08,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051890467] [2021-03-11 14:35:08,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:08,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399739368] [2021-03-11 14:35:08,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:08,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:08,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,689 INFO L87 Difference]: Start difference. First operand 391 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:08,756 INFO L93 Difference]: Finished difference Result 585 states and 1755 transitions. [2021-03-11 14:35:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:08,758 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:08,758 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:08,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:08,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 390. [2021-03-11 14:35:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.51413881748072) internal successors, (1367), 389 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1367 transitions. [2021-03-11 14:35:08,767 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:08,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:08,767 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1367 transitions. [2021-03-11 14:35:08,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:08,767 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1367 transitions. [2021-03-11 14:35:08,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:08,768 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:08,768 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:08,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 14:35:08,768 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:08,768 INFO L82 PathProgramCache]: Analyzing trace with hash 880263027, now seen corresponding path program 21 times [2021-03-11 14:35:08,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:08,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453037187] [2021-03-11 14:35:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:08,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:08,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:08,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:08,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:08,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:08,794 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:08,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:08,811 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:08,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:08,831 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:08,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:08,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:08,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:08,892 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:08,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:08,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453037187] [2021-03-11 14:35:08,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:08,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:08,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241419419] [2021-03-11 14:35:08,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:08,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:08,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:08,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:08,930 INFO L87 Difference]: Start difference. First operand 390 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,011 INFO L93 Difference]: Finished difference Result 591 states and 1766 transitions. [2021-03-11 14:35:09,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:09,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:09,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,014 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:35:09,014 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:09,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:09,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 392. [2021-03-11 14:35:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:35:09,023 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:09,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,023 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:35:09,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:35:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:09,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,024 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 14:35:09,024 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,024 INFO L82 PathProgramCache]: Analyzing trace with hash 342407449, now seen corresponding path program 22 times [2021-03-11 14:35:09,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609950746] [2021-03-11 14:35:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:09,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:09,075 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:09,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:09,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:09,159 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:09,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609950746] [2021-03-11 14:35:09,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:09,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988513340] [2021-03-11 14:35:09,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:09,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:09,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,182 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,239 INFO L93 Difference]: Finished difference Result 598 states and 1778 transitions. [2021-03-11 14:35:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:09,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,241 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:09,241 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:35:09,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:35:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 390. [2021-03-11 14:35:09,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:35:09,249 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:09,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,249 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:35:09,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:35:09,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:09,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 14:35:09,250 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash 890766131, now seen corresponding path program 23 times [2021-03-11 14:35:09,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730196121] [2021-03-11 14:35:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,275 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:09,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:09,291 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:09,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:09,333 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:09,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:09,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730196121] [2021-03-11 14:35:09,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:09,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005383828] [2021-03-11 14:35:09,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:09,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:09,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,382 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,453 INFO L93 Difference]: Finished difference Result 594 states and 1771 transitions. [2021-03-11 14:35:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:09,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,455 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:09,455 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:09,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:09,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:09,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 393. [2021-03-11 14:35:09,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4948979591836733) internal successors, (1370), 392 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1370 transitions. [2021-03-11 14:35:09,464 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:09,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,464 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1370 transitions. [2021-03-11 14:35:09,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,464 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1370 transitions. [2021-03-11 14:35:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:09,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 14:35:09,465 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1258030405, now seen corresponding path program 24 times [2021-03-11 14:35:09,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073451105] [2021-03-11 14:35:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,491 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:09,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:09,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,526 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:09,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:09,552 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:09,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:09,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:09,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073451105] [2021-03-11 14:35:09,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:09,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111969636] [2021-03-11 14:35:09,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:09,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:09,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,600 INFO L87 Difference]: Start difference. First operand 393 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,657 INFO L93 Difference]: Finished difference Result 600 states and 1780 transitions. [2021-03-11 14:35:09,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:09,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:09,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,658 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:35:09,658 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:35:09,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:35:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 386. [2021-03-11 14:35:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.5246753246753246) internal successors, (1357), 385 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1357 transitions. [2021-03-11 14:35:09,667 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,667 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1357 transitions. [2021-03-11 14:35:09,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,667 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1357 transitions. [2021-03-11 14:35:09,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:09,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,668 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 14:35:09,668 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1203809033, now seen corresponding path program 25 times [2021-03-11 14:35:09,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336807589] [2021-03-11 14:35:09,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,692 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:09,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:09,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:09,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:09,729 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,746 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:09,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:09,769 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:09,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:09,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336807589] [2021-03-11 14:35:09,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:09,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:09,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905763326] [2021-03-11 14:35:09,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:09,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:09,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:09,791 INFO L87 Difference]: Start difference. First operand 386 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:09,862 INFO L93 Difference]: Finished difference Result 603 states and 1803 transitions. [2021-03-11 14:35:09,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:09,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:09,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:09,863 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:35:09,863 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:35:09,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:35:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 392. [2021-03-11 14:35:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.516624040920716) internal successors, (1375), 391 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1375 transitions. [2021-03-11 14:35:09,872 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:09,872 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1375 transitions. [2021-03-11 14:35:09,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1375 transitions. [2021-03-11 14:35:09,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:09,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:09,873 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:09,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 14:35:09,873 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:09,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1358301175, now seen corresponding path program 26 times [2021-03-11 14:35:09,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:09,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60955827] [2021-03-11 14:35:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:09,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:09,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:09,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:09,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:09,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:09,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:09,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:09,920 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:09,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:09,943 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:09,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:09,961 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:09,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:09,984 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:09,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60955827] [2021-03-11 14:35:10,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:10,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899911251] [2021-03-11 14:35:10,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:10,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:10,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,006 INFO L87 Difference]: Start difference. First operand 392 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,064 INFO L93 Difference]: Finished difference Result 601 states and 1798 transitions. [2021-03-11 14:35:10,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:10,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,066 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:35:10,066 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:35:10,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:10,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:35:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 391. [2021-03-11 14:35:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5205128205128204) internal successors, (1373), 390 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1373 transitions. [2021-03-11 14:35:10,074 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:10,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,074 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1373 transitions. [2021-03-11 14:35:10,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,074 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1373 transitions. [2021-03-11 14:35:10,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:10,075 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,075 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 14:35:10,075 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1710155299, now seen corresponding path program 27 times [2021-03-11 14:35:10,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316501840] [2021-03-11 14:35:10,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,116 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:10,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:10,165 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:10,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:10,185 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:10,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316501840] [2021-03-11 14:35:10,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:10,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107692960] [2021-03-11 14:35:10,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:10,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:10,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,206 INFO L87 Difference]: Start difference. First operand 391 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,295 INFO L93 Difference]: Finished difference Result 613 states and 1823 transitions. [2021-03-11 14:35:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,297 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:35:10,297 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:10,298 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 395. [2021-03-11 14:35:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.50253807106599) internal successors, (1380), 394 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1380 transitions. [2021-03-11 14:35:10,307 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1380 transitions. Word has length 22 [2021-03-11 14:35:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,307 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1380 transitions. [2021-03-11 14:35:10,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1380 transitions. [2021-03-11 14:35:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:10,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 14:35:10,308 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1783462711, now seen corresponding path program 28 times [2021-03-11 14:35:10,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092622972] [2021-03-11 14:35:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,353 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:10,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:10,406 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:10,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:10,430 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:10,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092622972] [2021-03-11 14:35:10,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:10,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309138178] [2021-03-11 14:35:10,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:10,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:10,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,452 INFO L87 Difference]: Start difference. First operand 395 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,521 INFO L93 Difference]: Finished difference Result 618 states and 1829 transitions. [2021-03-11 14:35:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:10,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:10,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,523 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:10,523 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:35:10,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:35:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 391. [2021-03-11 14:35:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5153846153846153) internal successors, (1371), 390 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1371 transitions. [2021-03-11 14:35:10,531 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1371 transitions. Word has length 22 [2021-03-11 14:35:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,531 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1371 transitions. [2021-03-11 14:35:10,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,532 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1371 transitions. [2021-03-11 14:35:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:10,532 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,532 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 14:35:10,532 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,533 INFO L82 PathProgramCache]: Analyzing trace with hash 264209587, now seen corresponding path program 29 times [2021-03-11 14:35:10,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511262373] [2021-03-11 14:35:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,571 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,593 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:10,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:10,617 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:10,645 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:10,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511262373] [2021-03-11 14:35:10,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:10,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830117654] [2021-03-11 14:35:10,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:10,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:10,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,668 INFO L87 Difference]: Start difference. First operand 391 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,721 INFO L93 Difference]: Finished difference Result 607 states and 1807 transitions. [2021-03-11 14:35:10,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:10,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:10,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,723 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:35:10,723 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:35:10,723 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:35:10,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 393. [2021-03-11 14:35:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.5051020408163267) internal successors, (1374), 392 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1374 transitions. [2021-03-11 14:35:10,732 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,732 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1374 transitions. [2021-03-11 14:35:10,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1374 transitions. [2021-03-11 14:35:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:10,733 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,733 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 14:35:10,733 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,733 INFO L82 PathProgramCache]: Analyzing trace with hash -273645991, now seen corresponding path program 30 times [2021-03-11 14:35:10,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335008917] [2021-03-11 14:35:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,762 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,776 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:10,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:10,801 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:10,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:10,826 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:10,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:10,846 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:10,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:10,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335008917] [2021-03-11 14:35:10,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:10,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:10,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719535262] [2021-03-11 14:35:10,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:10,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:10,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:10,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:10,866 INFO L87 Difference]: Start difference. First operand 393 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:10,919 INFO L93 Difference]: Finished difference Result 614 states and 1819 transitions. [2021-03-11 14:35:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:10,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:10,920 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:35:10,920 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:10,920 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 389. [2021-03-11 14:35:10,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.520618556701031) internal successors, (1366), 388 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1366 transitions. [2021-03-11 14:35:10,928 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:10,928 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1366 transitions. [2021-03-11 14:35:10,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:10,929 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1366 transitions. [2021-03-11 14:35:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:10,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:10,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:10,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 14:35:10,929 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:10,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:10,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1626611229, now seen corresponding path program 31 times [2021-03-11 14:35:10,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:10,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671722206] [2021-03-11 14:35:10,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:10,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:10,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:10,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:10,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:10,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:10,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:10,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:10,970 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:10,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:10,991 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:10,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,010 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:11,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:11,032 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:11,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671722206] [2021-03-11 14:35:11,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:11,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028722216] [2021-03-11 14:35:11,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:11,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:11,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,057 INFO L87 Difference]: Start difference. First operand 389 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,138 INFO L93 Difference]: Finished difference Result 598 states and 1791 transitions. [2021-03-11 14:35:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,139 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:11,139 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:35:11,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:11,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:35:11,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 391. [2021-03-11 14:35:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5128205128205128) internal successors, (1370), 390 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1370 transitions. [2021-03-11 14:35:11,148 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,148 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1370 transitions. [2021-03-11 14:35:11,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1370 transitions. [2021-03-11 14:35:11,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:11,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,149 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-11 14:35:11,149 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1472119087, now seen corresponding path program 32 times [2021-03-11 14:35:11,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927805471] [2021-03-11 14:35:11,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:11,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:11,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,213 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:11,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:11,229 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:11,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:11,249 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:11,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927805471] [2021-03-11 14:35:11,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:11,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109122156] [2021-03-11 14:35:11,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:11,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,270 INFO L87 Difference]: Start difference. First operand 391 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,329 INFO L93 Difference]: Finished difference Result 596 states and 1786 transitions. [2021-03-11 14:35:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:11,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,330 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:35:11,330 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:35:11,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:35:11,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 390. [2021-03-11 14:35:11,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5167095115681235) internal successors, (1368), 389 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1368 transitions. [2021-03-11 14:35:11,338 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:11,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,338 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1368 transitions. [2021-03-11 14:35:11,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,338 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1368 transitions. [2021-03-11 14:35:11,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:11,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,339 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-11 14:35:11,339 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,339 INFO L82 PathProgramCache]: Analyzing trace with hash -532519641, now seen corresponding path program 33 times [2021-03-11 14:35:11,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131537965] [2021-03-11 14:35:11,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:11,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:11,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,412 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:11,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,440 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:11,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:11,464 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:11,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131537965] [2021-03-11 14:35:11,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:11,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671490155] [2021-03-11 14:35:11,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:11,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:11,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,487 INFO L87 Difference]: Start difference. First operand 390 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,566 INFO L93 Difference]: Finished difference Result 605 states and 1806 transitions. [2021-03-11 14:35:11,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:11,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:11,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,567 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:35:11,567 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:11,567 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 393. [2021-03-11 14:35:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.502551020408163) internal successors, (1373), 392 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1373 transitions. [2021-03-11 14:35:11,576 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:11,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,577 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1373 transitions. [2021-03-11 14:35:11,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,577 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1373 transitions. [2021-03-11 14:35:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:11,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-11 14:35:11,578 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1584330863, now seen corresponding path program 34 times [2021-03-11 14:35:11,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884711533] [2021-03-11 14:35:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:11,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:11,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:11,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:11,678 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:11,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:11,702 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:11,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884711533] [2021-03-11 14:35:11,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:11,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299318588] [2021-03-11 14:35:11,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:11,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,726 INFO L87 Difference]: Start difference. First operand 393 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:11,806 INFO L93 Difference]: Finished difference Result 608 states and 1809 transitions. [2021-03-11 14:35:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:11,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:11,807 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:35:11,807 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:35:11,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:11,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:35:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 390. [2021-03-11 14:35:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.51413881748072) internal successors, (1367), 389 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1367 transitions. [2021-03-11 14:35:11,815 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:11,815 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1367 transitions. [2021-03-11 14:35:11,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1367 transitions. [2021-03-11 14:35:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:11,816 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:11,816 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:11,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-11 14:35:11,816 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1978465353, now seen corresponding path program 35 times [2021-03-11 14:35:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832568575] [2021-03-11 14:35:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:11,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:11,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:11,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:11,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:11,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:11,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:11,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:11,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:11,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:11,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:11,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:11,913 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:11,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:11,937 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:11,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:11,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832568575] [2021-03-11 14:35:11,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:11,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:11,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965512277] [2021-03-11 14:35:11,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:11,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:11,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:11,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:11,962 INFO L87 Difference]: Start difference. First operand 390 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,022 INFO L93 Difference]: Finished difference Result 599 states and 1791 transitions. [2021-03-11 14:35:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:12,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,023 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:35:12,023 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:12,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 391. [2021-03-11 14:35:12,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5076923076923077) internal successors, (1368), 390 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1368 transitions. [2021-03-11 14:35:12,031 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,031 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1368 transitions. [2021-03-11 14:35:12,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1368 transitions. [2021-03-11 14:35:12,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:12,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-11 14:35:12,032 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1243416563, now seen corresponding path program 36 times [2021-03-11 14:35:12,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225763785] [2021-03-11 14:35:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:12,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:12,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,076 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:12,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:12,100 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:12,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:12,125 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:12,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:12,149 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:12,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225763785] [2021-03-11 14:35:12,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:12,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712390444] [2021-03-11 14:35:12,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:12,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,172 INFO L87 Difference]: Start difference. First operand 391 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,253 INFO L93 Difference]: Finished difference Result 604 states and 1800 transitions. [2021-03-11 14:35:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:12,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,255 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:35:12,255 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:35:12,255 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:35:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 389. [2021-03-11 14:35:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.518041237113402) internal successors, (1365), 388 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1365 transitions. [2021-03-11 14:35:12,263 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,263 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1365 transitions. [2021-03-11 14:35:12,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,263 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1365 transitions. [2021-03-11 14:35:12,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:12,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,264 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-11 14:35:12,264 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2015654579, now seen corresponding path program 37 times [2021-03-11 14:35:12,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254092345] [2021-03-11 14:35:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,279 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:12,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:12,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,328 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:12,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:12,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:12,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254092345] [2021-03-11 14:35:12,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:12,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155721655] [2021-03-11 14:35:12,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:12,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:12,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,405 INFO L87 Difference]: Start difference. First operand 389 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,474 INFO L93 Difference]: Finished difference Result 626 states and 1858 transitions. [2021-03-11 14:35:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:12,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,476 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:35:12,476 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:35:12,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:12,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:35:12,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 397. [2021-03-11 14:35:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.5) internal successors, (1386), 396 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1386 transitions. [2021-03-11 14:35:12,484 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1386 transitions. Word has length 22 [2021-03-11 14:35:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,484 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1386 transitions. [2021-03-11 14:35:12,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1386 transitions. [2021-03-11 14:35:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:12,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-11 14:35:12,485 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1227501495, now seen corresponding path program 38 times [2021-03-11 14:35:12,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660736959] [2021-03-11 14:35:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:12,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:12,510 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,525 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:12,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:12,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:12,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:12,597 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:12,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660736959] [2021-03-11 14:35:12,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:12,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330132321] [2021-03-11 14:35:12,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:12,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:12,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,624 INFO L87 Difference]: Start difference. First operand 397 states and 1386 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,712 INFO L93 Difference]: Finished difference Result 629 states and 1861 transitions. [2021-03-11 14:35:12,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:12,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,714 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:35:12,714 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:35:12,714 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:35:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 394. [2021-03-11 14:35:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.5063613231552164) internal successors, (1378), 393 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1378 transitions. [2021-03-11 14:35:12,722 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1378 transitions. Word has length 22 [2021-03-11 14:35:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,722 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1378 transitions. [2021-03-11 14:35:12,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1378 transitions. [2021-03-11 14:35:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:12,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,723 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-11 14:35:12,723 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1691567395, now seen corresponding path program 39 times [2021-03-11 14:35:12,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221646493] [2021-03-11 14:35:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:12,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:12,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:12,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:12,740 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:12,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:12,751 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:12,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:12,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:12,788 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:12,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:12,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:12,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:12,855 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:12,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:12,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221646493] [2021-03-11 14:35:12,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:12,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:12,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626076818] [2021-03-11 14:35:12,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:12,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:12,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:12,881 INFO L87 Difference]: Start difference. First operand 394 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:12,978 INFO L93 Difference]: Finished difference Result 629 states and 1860 transitions. [2021-03-11 14:35:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:12,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:12,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:12,980 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:35:12,980 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:35:12,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:35:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 398. [2021-03-11 14:35:12,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4886649874055418) internal successors, (1385), 397 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1385 transitions. [2021-03-11 14:35:12,988 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1385 transitions. Word has length 22 [2021-03-11 14:35:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:12,988 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1385 transitions. [2021-03-11 14:35:12,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1385 transitions. [2021-03-11 14:35:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:12,989 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:12,989 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:12,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-11 14:35:12,989 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:12,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1764874807, now seen corresponding path program 40 times [2021-03-11 14:35:12,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:12,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112191315] [2021-03-11 14:35:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:13,055 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:13,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:13,085 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:13,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:13,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:13,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112191315] [2021-03-11 14:35:13,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:13,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300911532] [2021-03-11 14:35:13,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,146 INFO L87 Difference]: Start difference. First operand 398 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,205 INFO L93 Difference]: Finished difference Result 634 states and 1866 transitions. [2021-03-11 14:35:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:13,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,207 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:35:13,207 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:35:13,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:13,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:35:13,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 394. [2021-03-11 14:35:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.49618320610687) internal successors, (1374), 393 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1374 transitions. [2021-03-11 14:35:13,216 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,216 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1374 transitions. [2021-03-11 14:35:13,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1374 transitions. [2021-03-11 14:35:13,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:13,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,216 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-11 14:35:13,217 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,217 INFO L82 PathProgramCache]: Analyzing trace with hash -794936029, now seen corresponding path program 41 times [2021-03-11 14:35:13,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888820475] [2021-03-11 14:35:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:13,283 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:13,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:13,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:13,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:13,330 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:13,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:13,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888820475] [2021-03-11 14:35:13,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:13,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135959050] [2021-03-11 14:35:13,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:13,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,353 INFO L87 Difference]: Start difference. First operand 394 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,425 INFO L93 Difference]: Finished difference Result 639 states and 1878 transitions. [2021-03-11 14:35:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:13,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,427 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:35:13,427 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:35:13,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:35:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 402. [2021-03-11 14:35:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4613466334164587) internal successors, (1388), 401 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1388 transitions. [2021-03-11 14:35:13,435 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1388 transitions. Word has length 22 [2021-03-11 14:35:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,435 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1388 transitions. [2021-03-11 14:35:13,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1388 transitions. [2021-03-11 14:35:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:13,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,436 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-11 14:35:13,436 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash -776502003, now seen corresponding path program 42 times [2021-03-11 14:35:13,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143256762] [2021-03-11 14:35:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:13,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:13,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:13,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:13,511 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:13,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:13,533 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:13,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143256762] [2021-03-11 14:35:13,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:13,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435678045] [2021-03-11 14:35:13,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:13,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:13,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,553 INFO L87 Difference]: Start difference. First operand 402 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,609 INFO L93 Difference]: Finished difference Result 641 states and 1875 transitions. [2021-03-11 14:35:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:13,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:13,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,611 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:35:13,611 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:35:13,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:35:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 389. [2021-03-11 14:35:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5103092783505154) internal successors, (1362), 388 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1362 transitions. [2021-03-11 14:35:13,619 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,619 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1362 transitions. [2021-03-11 14:35:13,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1362 transitions. [2021-03-11 14:35:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:13,620 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,620 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-11 14:35:13,620 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1535566213, now seen corresponding path program 43 times [2021-03-11 14:35:13,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114365341] [2021-03-11 14:35:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:13,703 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:13,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:13,735 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:13,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114365341] [2021-03-11 14:35:13,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:13,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907138735] [2021-03-11 14:35:13,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:13,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:13,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,760 INFO L87 Difference]: Start difference. First operand 389 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:13,812 INFO L93 Difference]: Finished difference Result 612 states and 1817 transitions. [2021-03-11 14:35:13,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:13,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:13,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:13,813 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:35:13,813 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:35:13,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:35:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 393. [2021-03-11 14:35:13,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.497448979591837) internal successors, (1371), 392 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1371 transitions. [2021-03-11 14:35:13,821 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1371 transitions. Word has length 22 [2021-03-11 14:35:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:13,821 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1371 transitions. [2021-03-11 14:35:13,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:13,821 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1371 transitions. [2021-03-11 14:35:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:13,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:13,822 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:13,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-03-11 14:35:13,822 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1686315703, now seen corresponding path program 44 times [2021-03-11 14:35:13,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:13,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778535045] [2021-03-11 14:35:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:13,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:13,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:13,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:13,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:13,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:13,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:13,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:13,861 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:13,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:13,891 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:13,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:13,919 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:13,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:13,942 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:13,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:13,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778535045] [2021-03-11 14:35:13,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:13,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:13,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814234679] [2021-03-11 14:35:13,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:13,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:13,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:13,964 INFO L87 Difference]: Start difference. First operand 393 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,053 INFO L93 Difference]: Finished difference Result 617 states and 1826 transitions. [2021-03-11 14:35:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,054 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:35:14,054 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:14,055 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 392. [2021-03-11 14:35:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.501278772378517) internal successors, (1369), 391 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1369 transitions. [2021-03-11 14:35:14,066 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1369 transitions. Word has length 22 [2021-03-11 14:35:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,066 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1369 transitions. [2021-03-11 14:35:14,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,067 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1369 transitions. [2021-03-11 14:35:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:14,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,068 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-03-11 14:35:14,068 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2123311535, now seen corresponding path program 45 times [2021-03-11 14:35:14,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359060994] [2021-03-11 14:35:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,107 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,125 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:14,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:14,161 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:14,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:14,182 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:14,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359060994] [2021-03-11 14:35:14,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:14,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338903809] [2021-03-11 14:35:14,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:14,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:14,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,202 INFO L87 Difference]: Start difference. First operand 392 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,251 INFO L93 Difference]: Finished difference Result 615 states and 1821 transitions. [2021-03-11 14:35:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,253 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:35:14,253 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:14,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:14,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 394. [2021-03-11 14:35:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.491094147582697) internal successors, (1372), 393 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1372 transitions. [2021-03-11 14:35:14,261 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:14,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,262 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1372 transitions. [2021-03-11 14:35:14,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,262 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1372 transitions. [2021-03-11 14:35:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:14,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-03-11 14:35:14,263 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1633800183, now seen corresponding path program 46 times [2021-03-11 14:35:14,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069320760] [2021-03-11 14:35:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,327 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:14,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:14,356 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:14,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:14,395 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:14,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069320760] [2021-03-11 14:35:14,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:14,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102789373] [2021-03-11 14:35:14,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:14,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:14,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,416 INFO L87 Difference]: Start difference. First operand 394 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,473 INFO L93 Difference]: Finished difference Result 622 states and 1833 transitions. [2021-03-11 14:35:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:14,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:14,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,474 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:35:14,474 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:35:14,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:14,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:35:14,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 392. [2021-03-11 14:35:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.49616368286445) internal successors, (1367), 391 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1367 transitions. [2021-03-11 14:35:14,482 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,483 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1367 transitions. [2021-03-11 14:35:14,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1367 transitions. [2021-03-11 14:35:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:14,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-03-11 14:35:14,483 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,484 INFO L82 PathProgramCache]: Analyzing trace with hash -2102305327, now seen corresponding path program 47 times [2021-03-11 14:35:14,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766437636] [2021-03-11 14:35:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,523 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,541 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:14,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:14,558 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:14,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:14,579 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:14,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766437636] [2021-03-11 14:35:14,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:14,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266418012] [2021-03-11 14:35:14,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:14,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:14,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,600 INFO L87 Difference]: Start difference. First operand 392 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,667 INFO L93 Difference]: Finished difference Result 631 states and 1855 transitions. [2021-03-11 14:35:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:14,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:14,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,668 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:35:14,668 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:35:14,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:35:14,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 400. [2021-03-11 14:35:14,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4611528822055138) internal successors, (1381), 399 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1381 transitions. [2021-03-11 14:35:14,681 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1381 transitions. Word has length 22 [2021-03-11 14:35:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,681 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1381 transitions. [2021-03-11 14:35:14,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1381 transitions. [2021-03-11 14:35:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:14,682 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,682 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-03-11 14:35:14,682 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1567075525, now seen corresponding path program 48 times [2021-03-11 14:35:14,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415214244] [2021-03-11 14:35:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,746 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:14,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:14,763 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:14,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:14,796 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:14,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:14,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415214244] [2021-03-11 14:35:14,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:14,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:14,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54964987] [2021-03-11 14:35:14,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:14,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:14,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:14,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:14,818 INFO L87 Difference]: Start difference. First operand 400 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:14,900 INFO L93 Difference]: Finished difference Result 633 states and 1852 transitions. [2021-03-11 14:35:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:14,903 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:35:14,903 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:35:14,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:35:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 386. [2021-03-11 14:35:14,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.516883116883117) internal successors, (1354), 385 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1354 transitions. [2021-03-11 14:35:14,910 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1354 transitions. Word has length 22 [2021-03-11 14:35:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:14,910 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1354 transitions. [2021-03-11 14:35:14,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1354 transitions. [2021-03-11 14:35:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:14,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:14,911 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:14,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-03-11 14:35:14,911 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -466718869, now seen corresponding path program 49 times [2021-03-11 14:35:14,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:14,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581058965] [2021-03-11 14:35:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:14,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:14,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:14,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:14,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:14,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:14,936 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:14,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:14,951 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:14,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:14,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:14,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:14,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:14,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:15,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581058965] [2021-03-11 14:35:15,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258610131] [2021-03-11 14:35:15,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,023 INFO L87 Difference]: Start difference. First operand 386 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,093 INFO L93 Difference]: Finished difference Result 570 states and 1722 transitions. [2021-03-11 14:35:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:15,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,095 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:35:15,095 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:35:15,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:35:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 389. [2021-03-11 14:35:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5103092783505154) internal successors, (1362), 388 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1362 transitions. [2021-03-11 14:35:15,102 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,102 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1362 transitions. [2021-03-11 14:35:15,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1362 transitions. [2021-03-11 14:35:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:15,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-03-11 14:35:15,103 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash -312226727, now seen corresponding path program 50 times [2021-03-11 14:35:15,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246791355] [2021-03-11 14:35:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:15,140 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,169 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:15,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:15,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246791355] [2021-03-11 14:35:15,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631005054] [2021-03-11 14:35:15,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,212 INFO L87 Difference]: Start difference. First operand 389 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,265 INFO L93 Difference]: Finished difference Result 568 states and 1717 transitions. [2021-03-11 14:35:15,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:15,266 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,267 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:35:15,267 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:15,267 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 388. [2021-03-11 14:35:15,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5142118863049094) internal successors, (1360), 387 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1360 transitions. [2021-03-11 14:35:15,274 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,274 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1360 transitions. [2021-03-11 14:35:15,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1360 transitions. [2021-03-11 14:35:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:15,275 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,275 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-03-11 14:35:15,275 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2067156723, now seen corresponding path program 51 times [2021-03-11 14:35:15,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548460823] [2021-03-11 14:35:15,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:15,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:15,312 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,325 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:15,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:15,362 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548460823] [2021-03-11 14:35:15,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601204277] [2021-03-11 14:35:15,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,383 INFO L87 Difference]: Start difference. First operand 388 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,460 INFO L93 Difference]: Finished difference Result 572 states and 1726 transitions. [2021-03-11 14:35:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:15,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,462 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:35:15,462 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:35:15,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:35:15,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 390. [2021-03-11 14:35:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5038560411311055) internal successors, (1363), 389 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1363 transitions. [2021-03-11 14:35:15,469 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,469 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1363 transitions. [2021-03-11 14:35:15,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1363 transitions. [2021-03-11 14:35:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:15,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,469 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-03-11 14:35:15,470 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1725269021, now seen corresponding path program 52 times [2021-03-11 14:35:15,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951423249] [2021-03-11 14:35:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:15,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:15,511 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,524 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:15,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:15,540 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:15,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:15,561 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951423249] [2021-03-11 14:35:15,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238802237] [2021-03-11 14:35:15,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,582 INFO L87 Difference]: Start difference. First operand 390 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,652 INFO L93 Difference]: Finished difference Result 571 states and 1722 transitions. [2021-03-11 14:35:15,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,654 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:35:15,654 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:35:15,655 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:35:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 388. [2021-03-11 14:35:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.511627906976744) internal successors, (1359), 387 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1359 transitions. [2021-03-11 14:35:15,662 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,662 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1359 transitions. [2021-03-11 14:35:15,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1359 transitions. [2021-03-11 14:35:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:15,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-03-11 14:35:15,663 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,663 INFO L82 PathProgramCache]: Analyzing trace with hash 781864861, now seen corresponding path program 53 times [2021-03-11 14:35:15,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242217570] [2021-03-11 14:35:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:15,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:15,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,718 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:15,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:15,735 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:15,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:15,755 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242217570] [2021-03-11 14:35:15,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246801556] [2021-03-11 14:35:15,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,775 INFO L87 Difference]: Start difference. First operand 388 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:15,832 INFO L93 Difference]: Finished difference Result 567 states and 1714 transitions. [2021-03-11 14:35:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:15,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:15,833 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:35:15,834 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:15,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:15,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 389. [2021-03-11 14:35:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:35:15,840 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:15,841 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:35:15,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:35:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:15,841 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:15,841 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:15,841 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-03-11 14:35:15,841 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:15,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:15,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1902161477, now seen corresponding path program 54 times [2021-03-11 14:35:15,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:15,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218535809] [2021-03-11 14:35:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:15,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:15,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:15,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:15,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:15,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:15,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:15,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:15,880 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:15,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:15,893 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:15,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:15,910 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:15,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:15,935 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:15,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:15,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218535809] [2021-03-11 14:35:15,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:15,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:15,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191927918] [2021-03-11 14:35:15,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:15,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:15,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:15,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:15,961 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,042 INFO L93 Difference]: Finished difference Result 568 states and 1715 transitions. [2021-03-11 14:35:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:16,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:16,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,043 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:35:16,043 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:35:16,043 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:35:16,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 387. [2021-03-11 14:35:16,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5155440414507773) internal successors, (1357), 386 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1357 transitions. [2021-03-11 14:35:16,050 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:16,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,050 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1357 transitions. [2021-03-11 14:35:16,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1357 transitions. [2021-03-11 14:35:16,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:16,051 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,051 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-03-11 14:35:16,051 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1459315209, now seen corresponding path program 55 times [2021-03-11 14:35:16,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386509616] [2021-03-11 14:35:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,064 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,074 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:16,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:16,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:16,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:16,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,130 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:16,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:16,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:16,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386509616] [2021-03-11 14:35:16,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:16,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353966851] [2021-03-11 14:35:16,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:16,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:16,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,176 INFO L87 Difference]: Start difference. First operand 387 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,254 INFO L93 Difference]: Finished difference Result 575 states and 1732 transitions. [2021-03-11 14:35:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,256 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:35:16,256 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:35:16,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:35:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2021-03-11 14:35:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5077319587628866) internal successors, (1361), 388 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1361 transitions. [2021-03-11 14:35:16,266 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,266 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1361 transitions. [2021-03-11 14:35:16,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1361 transitions. [2021-03-11 14:35:16,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:16,267 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,267 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-03-11 14:35:16,267 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1613807351, now seen corresponding path program 56 times [2021-03-11 14:35:16,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758957513] [2021-03-11 14:35:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:16,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:16,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:16,326 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:16,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:16,342 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:16,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:16,363 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:16,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758957513] [2021-03-11 14:35:16,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:16,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047987839] [2021-03-11 14:35:16,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:16,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:16,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,384 INFO L87 Difference]: Start difference. First operand 389 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,440 INFO L93 Difference]: Finished difference Result 573 states and 1727 transitions. [2021-03-11 14:35:16,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:16,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:16,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,441 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:35:16,441 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:35:16,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:35:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 388. [2021-03-11 14:35:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.511627906976744) internal successors, (1359), 387 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1359 transitions. [2021-03-11 14:35:16,448 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,448 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1359 transitions. [2021-03-11 14:35:16,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1359 transitions. [2021-03-11 14:35:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:16,449 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,449 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-03-11 14:35:16,449 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1741560499, now seen corresponding path program 57 times [2021-03-11 14:35:16,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491611622] [2021-03-11 14:35:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,462 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:16,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:16,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:16,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:16,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:16,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,531 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:16,552 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:16,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491611622] [2021-03-11 14:35:16,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:16,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908295169] [2021-03-11 14:35:16,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:16,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:16,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,574 INFO L87 Difference]: Start difference. First operand 388 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,642 INFO L93 Difference]: Finished difference Result 582 states and 1747 transitions. [2021-03-11 14:35:16,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:16,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:16,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,643 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:35:16,643 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:35:16,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:35:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 391. [2021-03-11 14:35:16,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4974358974358974) internal successors, (1364), 390 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1364 transitions. [2021-03-11 14:35:16,651 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,651 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1364 transitions. [2021-03-11 14:35:16,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1364 transitions. [2021-03-11 14:35:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:16,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-03-11 14:35:16,652 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1501595575, now seen corresponding path program 58 times [2021-03-11 14:35:16,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290849750] [2021-03-11 14:35:16,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:16,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:16,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:16,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:16,724 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:16,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:16,750 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:16,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:16,771 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:16,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:16,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:16,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290849750] [2021-03-11 14:35:16,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:16,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:16,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567181322] [2021-03-11 14:35:16,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:16,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:16,793 INFO L87 Difference]: Start difference. First operand 391 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:16,865 INFO L93 Difference]: Finished difference Result 585 states and 1750 transitions. [2021-03-11 14:35:16,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:16,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:16,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:16,867 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:16,867 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:16,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 388. [2021-03-11 14:35:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.509043927648579) internal successors, (1358), 387 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1358 transitions. [2021-03-11 14:35:16,875 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:16,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:16,876 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1358 transitions. [2021-03-11 14:35:16,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:16,876 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1358 transitions. [2021-03-11 14:35:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:16,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:16,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:16,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-03-11 14:35:16,878 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:16,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1107461085, now seen corresponding path program 59 times [2021-03-11 14:35:16,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:16,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120021294] [2021-03-11 14:35:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:16,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:16,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:16,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:16,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:16,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:16,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:16,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:16,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:16,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:16,935 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:16,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:16,959 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:16,981 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120021294] [2021-03-11 14:35:17,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:17,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677406461] [2021-03-11 14:35:17,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:17,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:17,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,002 INFO L87 Difference]: Start difference. First operand 388 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,055 INFO L93 Difference]: Finished difference Result 576 states and 1732 transitions. [2021-03-11 14:35:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:17,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,057 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:35:17,057 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:35:17,057 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:17,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:35:17,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 389. [2021-03-11 14:35:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.502577319587629) internal successors, (1359), 388 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1359 transitions. [2021-03-11 14:35:17,064 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,064 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1359 transitions. [2021-03-11 14:35:17,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1359 transitions. [2021-03-11 14:35:17,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:17,065 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,065 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-03-11 14:35:17,065 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 34375705, now seen corresponding path program 60 times [2021-03-11 14:35:17,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672955854] [2021-03-11 14:35:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,088 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:17,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:17,147 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:17,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:17,170 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:17,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672955854] [2021-03-11 14:35:17,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:17,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007193372] [2021-03-11 14:35:17,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:17,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:17,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,191 INFO L87 Difference]: Start difference. First operand 389 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,264 INFO L93 Difference]: Finished difference Result 581 states and 1741 transitions. [2021-03-11 14:35:17,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:17,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:17,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,265 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:17,265 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:17,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:17,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 387. [2021-03-11 14:35:17,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5129533678756477) internal successors, (1356), 386 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1356 transitions. [2021-03-11 14:35:17,272 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,272 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1356 transitions. [2021-03-11 14:35:17,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1356 transitions. [2021-03-11 14:35:17,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:17,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-03-11 14:35:17,273 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1784911433, now seen corresponding path program 61 times [2021-03-11 14:35:17,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781756684] [2021-03-11 14:35:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,338 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:17,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:17,379 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:17,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781756684] [2021-03-11 14:35:17,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:17,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038420822] [2021-03-11 14:35:17,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:17,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:17,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,403 INFO L87 Difference]: Start difference. First operand 387 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,492 INFO L93 Difference]: Finished difference Result 581 states and 1748 transitions. [2021-03-11 14:35:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:17,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:17,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,494 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:17,494 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:35:17,494 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:17,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:35:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 391. [2021-03-11 14:35:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5025641025641026) internal successors, (1366), 390 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1366 transitions. [2021-03-11 14:35:17,501 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,501 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1366 transitions. [2021-03-11 14:35:17,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1366 transitions. [2021-03-11 14:35:17,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:17,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-03-11 14:35:17,502 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1282369881, now seen corresponding path program 62 times [2021-03-11 14:35:17,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865235839] [2021-03-11 14:35:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,515 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,525 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,562 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:17,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:17,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:17,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:17,603 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:17,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865235839] [2021-03-11 14:35:17,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:17,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458897114] [2021-03-11 14:35:17,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:17,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:17,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,629 INFO L87 Difference]: Start difference. First operand 391 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,724 INFO L93 Difference]: Finished difference Result 580 states and 1744 transitions. [2021-03-11 14:35:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,726 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:35:17,726 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:17,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:17,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 389. [2021-03-11 14:35:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5077319587628866) internal successors, (1361), 388 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1361 transitions. [2021-03-11 14:35:17,732 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,733 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1361 transitions. [2021-03-11 14:35:17,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1361 transitions. [2021-03-11 14:35:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:17,733 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,733 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-03-11 14:35:17,733 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash 184473579, now seen corresponding path program 63 times [2021-03-11 14:35:17,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697723718] [2021-03-11 14:35:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,750 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:17,776 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:17,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:17,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:17,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:17,825 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:17,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:17,849 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:17,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:17,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697723718] [2021-03-11 14:35:17,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:17,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:17,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579997571] [2021-03-11 14:35:17,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:17,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:17,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:17,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:17,874 INFO L87 Difference]: Start difference. First operand 389 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:17,955 INFO L93 Difference]: Finished difference Result 586 states and 1757 transitions. [2021-03-11 14:35:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:17,956 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:35:17,956 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:35:17,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:35:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 392. [2021-03-11 14:35:17,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.493606138107417) internal successors, (1366), 391 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1366 transitions. [2021-03-11 14:35:17,965 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:17,965 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1366 transitions. [2021-03-11 14:35:17,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1366 transitions. [2021-03-11 14:35:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:17,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:17,966 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:17,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-03-11 14:35:17,966 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:17,966 INFO L82 PathProgramCache]: Analyzing trace with hash -867337643, now seen corresponding path program 64 times [2021-03-11 14:35:17,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:17,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006929942] [2021-03-11 14:35:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:17,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:17,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:17,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:17,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:17,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:17,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:17,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:18,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:18,026 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:18,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,055 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:18,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:18,079 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:18,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006929942] [2021-03-11 14:35:18,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:18,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229271830] [2021-03-11 14:35:18,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:18,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:18,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,104 INFO L87 Difference]: Start difference. First operand 392 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,187 INFO L93 Difference]: Finished difference Result 589 states and 1760 transitions. [2021-03-11 14:35:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:18,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:18,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,188 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:35:18,188 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:35:18,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:35:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 389. [2021-03-11 14:35:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.502577319587629) internal successors, (1359), 388 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1359 transitions. [2021-03-11 14:35:18,195 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,195 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1359 transitions. [2021-03-11 14:35:18,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1359 transitions. [2021-03-11 14:35:18,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:18,198 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,198 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-03-11 14:35:18,198 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1869044585, now seen corresponding path program 65 times [2021-03-11 14:35:18,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158271851] [2021-03-11 14:35:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:18,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:18,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:18,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:18,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:18,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:18,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:18,306 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:18,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158271851] [2021-03-11 14:35:18,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:18,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582080213] [2021-03-11 14:35:18,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:18,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:18,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,329 INFO L87 Difference]: Start difference. First operand 389 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,415 INFO L93 Difference]: Finished difference Result 583 states and 1748 transitions. [2021-03-11 14:35:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,416 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:35:18,416 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:35:18,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:35:18,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 391. [2021-03-11 14:35:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4923076923076923) internal successors, (1362), 390 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1362 transitions. [2021-03-11 14:35:18,423 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,424 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1362 transitions. [2021-03-11 14:35:18,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1362 transitions. [2021-03-11 14:35:18,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:18,424 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,424 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-03-11 14:35:18,424 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,425 INFO L82 PathProgramCache]: Analyzing trace with hash 733743429, now seen corresponding path program 66 times [2021-03-11 14:35:18,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669145749] [2021-03-11 14:35:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:18,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:18,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,462 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:18,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:18,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:18,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:18,519 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:18,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:18,543 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:18,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669145749] [2021-03-11 14:35:18,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:18,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862123434] [2021-03-11 14:35:18,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:18,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:18,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,565 INFO L87 Difference]: Start difference. First operand 391 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,652 INFO L93 Difference]: Finished difference Result 587 states and 1754 transitions. [2021-03-11 14:35:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:18,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,653 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:35:18,653 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:35:18,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:18,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:35:18,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 387. [2021-03-11 14:35:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.510362694300518) internal successors, (1355), 386 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1355 transitions. [2021-03-11 14:35:18,660 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,660 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1355 transitions. [2021-03-11 14:35:18,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1355 transitions. [2021-03-11 14:35:18,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:18,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,661 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-03-11 14:35:18,661 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,661 INFO L82 PathProgramCache]: Analyzing trace with hash -2029967497, now seen corresponding path program 67 times [2021-03-11 14:35:18,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183680599] [2021-03-11 14:35:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:18,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:18,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,699 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:18,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:18,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:18,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:18,741 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:18,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:18,763 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:18,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183680599] [2021-03-11 14:35:18,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:18,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109912293] [2021-03-11 14:35:18,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:18,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:18,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,785 INFO L87 Difference]: Start difference. First operand 387 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:18,838 INFO L93 Difference]: Finished difference Result 570 states and 1719 transitions. [2021-03-11 14:35:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:18,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:18,839 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:35:18,840 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:35:18,840 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:18,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:35:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 389. [2021-03-11 14:35:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.502577319587629) internal successors, (1359), 388 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1359 transitions. [2021-03-11 14:35:18,846 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:18,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:18,847 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1359 transitions. [2021-03-11 14:35:18,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:18,847 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1359 transitions. [2021-03-11 14:35:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:18,847 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:18,847 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:18,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-03-11 14:35:18,847 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:18,848 INFO L82 PathProgramCache]: Analyzing trace with hash -419026539, now seen corresponding path program 68 times [2021-03-11 14:35:18,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:18,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376936485] [2021-03-11 14:35:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:18,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:18,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:18,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:18,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:18,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:18,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:18,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:18,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:18,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:18,903 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:18,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:18,920 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:18,941 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:18,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:18,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:18,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376936485] [2021-03-11 14:35:18,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:18,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:18,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027245488] [2021-03-11 14:35:18,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:18,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:18,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:18,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:18,963 INFO L87 Difference]: Start difference. First operand 389 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,033 INFO L93 Difference]: Finished difference Result 571 states and 1720 transitions. [2021-03-11 14:35:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:19,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:19,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,034 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:35:19,034 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:35:19,034 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:19,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:35:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 388. [2021-03-11 14:35:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5064599483204133) internal successors, (1357), 387 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1357 transitions. [2021-03-11 14:35:19,041 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,041 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1357 transitions. [2021-03-11 14:35:19,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1357 transitions. [2021-03-11 14:35:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:19,042 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,042 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-03-11 14:35:19,042 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,042 INFO L82 PathProgramCache]: Analyzing trace with hash 664561945, now seen corresponding path program 69 times [2021-03-11 14:35:19,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206609798] [2021-03-11 14:35:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,081 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,099 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:19,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:19,123 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:19,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:19,145 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:19,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206609798] [2021-03-11 14:35:19,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:19,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297769922] [2021-03-11 14:35:19,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,167 INFO L87 Difference]: Start difference. First operand 388 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,220 INFO L93 Difference]: Finished difference Result 574 states and 1726 transitions. [2021-03-11 14:35:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,221 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:35:19,221 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:19,221 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 389. [2021-03-11 14:35:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:35:19,228 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,228 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:35:19,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:35:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:19,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,229 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-03-11 14:35:19,229 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,229 INFO L82 PathProgramCache]: Analyzing trace with hash -408523435, now seen corresponding path program 70 times [2021-03-11 14:35:19,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375980873] [2021-03-11 14:35:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,265 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,307 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:19,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:19,333 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:19,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:19,370 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:19,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375980873] [2021-03-11 14:35:19,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:19,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070361620] [2021-03-11 14:35:19,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:19,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:19,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,390 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,464 INFO L93 Difference]: Finished difference Result 579 states and 1735 transitions. [2021-03-11 14:35:19,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:19,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,465 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:35:19,465 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:35:19,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:35:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 388. [2021-03-11 14:35:19,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.503875968992248) internal successors, (1356), 387 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1356 transitions. [2021-03-11 14:35:19,472 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,472 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1356 transitions. [2021-03-11 14:35:19,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1356 transitions. [2021-03-11 14:35:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:19,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-03-11 14:35:19,473 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,473 INFO L82 PathProgramCache]: Analyzing trace with hash 675065049, now seen corresponding path program 71 times [2021-03-11 14:35:19,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343803424] [2021-03-11 14:35:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,485 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,512 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:19,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:19,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:19,586 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:19,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:19,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343803424] [2021-03-11 14:35:19,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:19,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845291634] [2021-03-11 14:35:19,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:19,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,612 INFO L87 Difference]: Start difference. First operand 388 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,699 INFO L93 Difference]: Finished difference Result 577 states and 1732 transitions. [2021-03-11 14:35:19,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:19,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:19,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,701 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:35:19,701 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:35:19,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:35:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 390. [2021-03-11 14:35:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.493573264781491) internal successors, (1359), 389 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1359 transitions. [2021-03-11 14:35:19,707 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:19,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,707 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1359 transitions. [2021-03-11 14:35:19,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1359 transitions. [2021-03-11 14:35:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:19,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-03-11 14:35:19,710 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2008961289, now seen corresponding path program 72 times [2021-03-11 14:35:19,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768123024] [2021-03-11 14:35:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,743 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:19,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:19,779 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:19,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:19,807 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:19,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:19,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:19,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:19,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:19,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768123024] [2021-03-11 14:35:19,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:19,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:19,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302207430] [2021-03-11 14:35:19,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:19,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:19,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:19,856 INFO L87 Difference]: Start difference. First operand 390 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:19,939 INFO L93 Difference]: Finished difference Result 581 states and 1738 transitions. [2021-03-11 14:35:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:19,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:19,941 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:19,941 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:35:19,941 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:35:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 386. [2021-03-11 14:35:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.5142857142857142) internal successors, (1353), 385 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1353 transitions. [2021-03-11 14:35:19,948 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:19,948 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1353 transitions. [2021-03-11 14:35:19,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1353 transitions. [2021-03-11 14:35:19,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:19,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:19,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:19,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-03-11 14:35:19,949 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:19,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1242598685, now seen corresponding path program 73 times [2021-03-11 14:35:19,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:19,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522875759] [2021-03-11 14:35:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:19,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:19,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:19,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:19,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:19,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:19,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:19,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:19,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:19,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,010 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,028 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:20,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:20,057 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:20,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522875759] [2021-03-11 14:35:20,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:20,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939422054] [2021-03-11 14:35:20,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:20,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:20,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,082 INFO L87 Difference]: Start difference. First operand 386 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,163 INFO L93 Difference]: Finished difference Result 612 states and 1834 transitions. [2021-03-11 14:35:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:20,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,164 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:35:20,164 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:35:20,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:35:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 394. [2021-03-11 14:35:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.508905852417303) internal successors, (1379), 393 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1379 transitions. [2021-03-11 14:35:20,172 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1379 transitions. Word has length 22 [2021-03-11 14:35:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,172 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1379 transitions. [2021-03-11 14:35:20,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,172 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1379 transitions. [2021-03-11 14:35:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:20,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-03-11 14:35:20,173 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1745140237, now seen corresponding path program 74 times [2021-03-11 14:35:20,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448269375] [2021-03-11 14:35:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:20,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:20,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:20,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,234 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:20,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:20,252 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:20,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:20,275 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:20,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:20,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448269375] [2021-03-11 14:35:20,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:20,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217866332] [2021-03-11 14:35:20,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:20,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:20,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,297 INFO L87 Difference]: Start difference. First operand 394 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,386 INFO L93 Difference]: Finished difference Result 611 states and 1830 transitions. [2021-03-11 14:35:20,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:20,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,387 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:35:20,388 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:35:20,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:35:20,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 392. [2021-03-11 14:35:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.5140664961636827) internal successors, (1374), 391 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1374 transitions. [2021-03-11 14:35:20,394 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:20,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,395 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1374 transitions. [2021-03-11 14:35:20,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,395 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1374 transitions. [2021-03-11 14:35:20,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:20,395 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,395 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-03-11 14:35:20,395 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1451930757, now seen corresponding path program 75 times [2021-03-11 14:35:20,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138876925] [2021-03-11 14:35:20,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:20,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:20,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:20,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:20,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,482 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:20,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:20,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:20,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138876925] [2021-03-11 14:35:20,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:20,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018165722] [2021-03-11 14:35:20,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:20,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:20,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,527 INFO L87 Difference]: Start difference. First operand 392 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,603 INFO L93 Difference]: Finished difference Result 617 states and 1843 transitions. [2021-03-11 14:35:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,604 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:35:20,604 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:20,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:20,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 395. [2021-03-11 14:35:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.5) internal successors, (1379), 394 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1379 transitions. [2021-03-11 14:35:20,611 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1379 transitions. Word has length 22 [2021-03-11 14:35:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,611 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1379 transitions. [2021-03-11 14:35:20,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1379 transitions. [2021-03-11 14:35:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:20,612 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,612 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-03-11 14:35:20,612 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash 400119535, now seen corresponding path program 76 times [2021-03-11 14:35:20,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446353944] [2021-03-11 14:35:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:20,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:20,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:20,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:20,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:20,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:20,720 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446353944] [2021-03-11 14:35:20,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:20,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138253453] [2021-03-11 14:35:20,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:20,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:20,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,748 INFO L87 Difference]: Start difference. First operand 395 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:20,824 INFO L93 Difference]: Finished difference Result 620 states and 1846 transitions. [2021-03-11 14:35:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:20,825 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:35:20,825 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:35:20,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:35:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 392. [2021-03-11 14:35:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.5089514066496164) internal successors, (1372), 391 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1372 transitions. [2021-03-11 14:35:20,832 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:20,832 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1372 transitions. [2021-03-11 14:35:20,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1372 transitions. [2021-03-11 14:35:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:20,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:20,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:20,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-03-11 14:35:20,833 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:20,834 INFO L82 PathProgramCache]: Analyzing trace with hash -601587407, now seen corresponding path program 77 times [2021-03-11 14:35:20,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:20,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657805378] [2021-03-11 14:35:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:20,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:20,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:20,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:20,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:20,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:20,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:20,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:20,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:20,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:20,897 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:20,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:20,925 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:20,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:20,949 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:20,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657805378] [2021-03-11 14:35:20,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:20,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:20,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038421149] [2021-03-11 14:35:20,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:20,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:20,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:20,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:20,975 INFO L87 Difference]: Start difference. First operand 392 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,062 INFO L93 Difference]: Finished difference Result 614 states and 1834 transitions. [2021-03-11 14:35:21,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:21,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:21,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,063 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:35:21,063 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:35:21,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:35:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 394. [2021-03-11 14:35:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4987277353689565) internal successors, (1375), 393 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1375 transitions. [2021-03-11 14:35:21,070 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,070 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1375 transitions. [2021-03-11 14:35:21,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1375 transitions. [2021-03-11 14:35:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:21,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-03-11 14:35:21,071 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2001200607, now seen corresponding path program 78 times [2021-03-11 14:35:21,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61126550] [2021-03-11 14:35:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:21,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:21,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:21,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:21,158 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:21,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:21,183 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:21,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61126550] [2021-03-11 14:35:21,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:21,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063832739] [2021-03-11 14:35:21,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:21,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:21,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,209 INFO L87 Difference]: Start difference. First operand 394 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,290 INFO L93 Difference]: Finished difference Result 618 states and 1840 transitions. [2021-03-11 14:35:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:21,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:21,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,291 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:21,291 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:35:21,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:21,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:35:21,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 390. [2021-03-11 14:35:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.51413881748072) internal successors, (1367), 389 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1367 transitions. [2021-03-11 14:35:21,298 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,298 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1367 transitions. [2021-03-11 14:35:21,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1367 transitions. [2021-03-11 14:35:21,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:21,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,299 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-03-11 14:35:21,300 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2012132813, now seen corresponding path program 79 times [2021-03-11 14:35:21,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236850550] [2021-03-11 14:35:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:21,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:21,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,340 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:21,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:21,363 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,382 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:21,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:21,404 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:21,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236850550] [2021-03-11 14:35:21,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:21,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577786334] [2021-03-11 14:35:21,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:21,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:21,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,426 INFO L87 Difference]: Start difference. First operand 390 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,497 INFO L93 Difference]: Finished difference Result 617 states and 1842 transitions. [2021-03-11 14:35:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:21,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:21,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,498 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:35:21,498 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:21,498 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:21,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 395. [2021-03-11 14:35:21,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.50253807106599) internal successors, (1380), 394 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1380 transitions. [2021-03-11 14:35:21,505 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1380 transitions. Word has length 22 [2021-03-11 14:35:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,505 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1380 transitions. [2021-03-11 14:35:21,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,506 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1380 transitions. [2021-03-11 14:35:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:21,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-03-11 14:35:21,506 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1509591261, now seen corresponding path program 80 times [2021-03-11 14:35:21,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623059640] [2021-03-11 14:35:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,522 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:21,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:21,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,551 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:21,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:21,577 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:21,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:21,596 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:21,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:21,622 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:21,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623059640] [2021-03-11 14:35:21,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:21,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85077862] [2021-03-11 14:35:21,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:21,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,645 INFO L87 Difference]: Start difference. First operand 395 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,722 INFO L93 Difference]: Finished difference Result 616 states and 1838 transitions. [2021-03-11 14:35:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:21,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,724 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:35:21,724 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:35:21,724 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:35:21,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 393. [2021-03-11 14:35:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.50765306122449) internal successors, (1375), 392 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1375 transitions. [2021-03-11 14:35:21,731 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:21,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,731 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1375 transitions. [2021-03-11 14:35:21,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1375 transitions. [2021-03-11 14:35:21,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:21,732 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,732 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-03-11 14:35:21,732 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,732 INFO L82 PathProgramCache]: Analyzing trace with hash -176050363, now seen corresponding path program 81 times [2021-03-11 14:35:21,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041590532] [2021-03-11 14:35:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:21,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:21,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:21,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:21,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:21,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:21,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:21,824 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:21,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:21,851 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:21,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:21,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041590532] [2021-03-11 14:35:21,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:21,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:21,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467372706] [2021-03-11 14:35:21,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:21,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:21,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:21,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:21,877 INFO L87 Difference]: Start difference. First operand 393 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:21,957 INFO L93 Difference]: Finished difference Result 625 states and 1856 transitions. [2021-03-11 14:35:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:21,958 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:35:21,958 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:35:21,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:35:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 397. [2021-03-11 14:35:21,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.48989898989899) internal successors, (1382), 396 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1382 transitions. [2021-03-11 14:35:21,966 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1382 transitions. Word has length 22 [2021-03-11 14:35:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:21,966 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1382 transitions. [2021-03-11 14:35:21,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:21,966 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1382 transitions. [2021-03-11 14:35:21,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:21,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:21,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:21,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-03-11 14:35:21,967 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:21,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:21,967 INFO L82 PathProgramCache]: Analyzing trace with hash -102742951, now seen corresponding path program 82 times [2021-03-11 14:35:21,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:21,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667165132] [2021-03-11 14:35:21,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:21,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:21,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:21,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:21,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:21,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:21,990 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:21,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:22,005 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,029 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:22,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:22,060 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:22,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:22,083 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:22,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667165132] [2021-03-11 14:35:22,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:22,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529841163] [2021-03-11 14:35:22,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:22,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:22,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,105 INFO L87 Difference]: Start difference. First operand 397 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,159 INFO L93 Difference]: Finished difference Result 630 states and 1862 transitions. [2021-03-11 14:35:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,160 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:35:22,160 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:35:22,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:35:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 393. [2021-03-11 14:35:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.5) internal successors, (1372), 392 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1372 transitions. [2021-03-11 14:35:22,167 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:22,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,167 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1372 transitions. [2021-03-11 14:35:22,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,167 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1372 transitions. [2021-03-11 14:35:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:22,168 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,168 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-03-11 14:35:22,168 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1694338725, now seen corresponding path program 83 times [2021-03-11 14:35:22,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043822156] [2021-03-11 14:35:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:22,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,231 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:22,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:22,255 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:22,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:22,280 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:22,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043822156] [2021-03-11 14:35:22,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:22,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882169787] [2021-03-11 14:35:22,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:22,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:22,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,305 INFO L87 Difference]: Start difference. First operand 393 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,386 INFO L93 Difference]: Finished difference Result 622 states and 1846 transitions. [2021-03-11 14:35:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,388 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:35:22,388 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:35:22,388 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:35:22,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 396. [2021-03-11 14:35:22,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4860759493670885) internal successors, (1377), 395 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1377 transitions. [2021-03-11 14:35:22,395 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1377 transitions. Word has length 22 [2021-03-11 14:35:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,395 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1377 transitions. [2021-03-11 14:35:22,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,395 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1377 transitions. [2021-03-11 14:35:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:22,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-03-11 14:35:22,396 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,396 INFO L82 PathProgramCache]: Analyzing trace with hash -378181421, now seen corresponding path program 84 times [2021-03-11 14:35:22,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683036198] [2021-03-11 14:35:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,409 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,419 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:22,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:22,435 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,458 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:22,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:22,485 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:22,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:22,511 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:22,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683036198] [2021-03-11 14:35:22,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:22,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087358521] [2021-03-11 14:35:22,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:22,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:22,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,533 INFO L87 Difference]: Start difference. First operand 396 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,587 INFO L93 Difference]: Finished difference Result 628 states and 1855 transitions. [2021-03-11 14:35:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,588 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:35:22,588 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:22,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:22,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 390. [2021-03-11 14:35:22,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.506426735218509) internal successors, (1364), 389 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1364 transitions. [2021-03-11 14:35:22,595 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,595 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1364 transitions. [2021-03-11 14:35:22,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1364 transitions. [2021-03-11 14:35:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:22,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,596 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-03-11 14:35:22,596 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1957238259, now seen corresponding path program 85 times [2021-03-11 14:35:22,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362155449] [2021-03-11 14:35:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,609 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:22,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:22,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,657 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:22,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,686 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:22,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:22,718 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:22,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362155449] [2021-03-11 14:35:22,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:22,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:22,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259765022] [2021-03-11 14:35:22,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:22,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:22,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:22,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:22,740 INFO L87 Difference]: Start difference. First operand 390 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:22,817 INFO L93 Difference]: Finished difference Result 634 states and 1880 transitions. [2021-03-11 14:35:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:22,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:22,819 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:35:22,819 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:35:22,819 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:35:22,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 398. [2021-03-11 14:35:22,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4886649874055418) internal successors, (1385), 397 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1385 transitions. [2021-03-11 14:35:22,826 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1385 transitions. Word has length 22 [2021-03-11 14:35:22,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:22,826 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1385 transitions. [2021-03-11 14:35:22,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:22,826 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1385 transitions. [2021-03-11 14:35:22,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:22,827 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:22,827 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:22,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-03-11 14:35:22,827 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:22,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1285917815, now seen corresponding path program 86 times [2021-03-11 14:35:22,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:22,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308664201] [2021-03-11 14:35:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:22,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:22,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:22,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:22,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:22,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:22,908 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:22,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:22,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:22,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:22,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:22,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:22,976 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:22,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:22,999 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:22,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308664201] [2021-03-11 14:35:23,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:23,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576458124] [2021-03-11 14:35:23,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:23,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:23,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,021 INFO L87 Difference]: Start difference. First operand 398 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,101 INFO L93 Difference]: Finished difference Result 637 states and 1883 transitions. [2021-03-11 14:35:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:23,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,102 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:35:23,102 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:35:23,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:35:23,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 395. [2021-03-11 14:35:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.49492385786802) internal successors, (1377), 394 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1377 transitions. [2021-03-11 14:35:23,109 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1377 transitions. Word has length 22 [2021-03-11 14:35:23,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,109 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1377 transitions. [2021-03-11 14:35:23,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1377 transitions. [2021-03-11 14:35:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:23,110 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,110 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-03-11 14:35:23,110 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1749983715, now seen corresponding path program 87 times [2021-03-11 14:35:23,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51794560] [2021-03-11 14:35:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,150 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:23,203 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:23,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:23,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:23,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51794560] [2021-03-11 14:35:23,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:23,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377845236] [2021-03-11 14:35:23,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,255 INFO L87 Difference]: Start difference. First operand 395 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,335 INFO L93 Difference]: Finished difference Result 637 states and 1882 transitions. [2021-03-11 14:35:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:23,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:23,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,337 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:35:23,337 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:35:23,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:35:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 399. [2021-03-11 14:35:23,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.477386934673367) internal successors, (1384), 398 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1384 transitions. [2021-03-11 14:35:23,344 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1384 transitions. Word has length 22 [2021-03-11 14:35:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,344 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1384 transitions. [2021-03-11 14:35:23,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1384 transitions. [2021-03-11 14:35:23,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:23,346 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-03-11 14:35:23,346 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1823291127, now seen corresponding path program 88 times [2021-03-11 14:35:23,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111940290] [2021-03-11 14:35:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,411 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:23,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:23,452 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:23,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:23,475 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:23,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111940290] [2021-03-11 14:35:23,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:23,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280952206] [2021-03-11 14:35:23,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:23,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:23,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,498 INFO L87 Difference]: Start difference. First operand 399 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,556 INFO L93 Difference]: Finished difference Result 642 states and 1888 transitions. [2021-03-11 14:35:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:23,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,557 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:35:23,557 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:35:23,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:35:23,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 395. [2021-03-11 14:35:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.484771573604061) internal successors, (1373), 394 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1373 transitions. [2021-03-11 14:35:23,565 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,565 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1373 transitions. [2021-03-11 14:35:23,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1373 transitions. [2021-03-11 14:35:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:23,566 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,566 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-03-11 14:35:23,566 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,566 INFO L82 PathProgramCache]: Analyzing trace with hash -736519709, now seen corresponding path program 89 times [2021-03-11 14:35:23,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812382216] [2021-03-11 14:35:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,602 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,623 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:23,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:23,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:23,669 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:23,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812382216] [2021-03-11 14:35:23,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:23,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674574241] [2021-03-11 14:35:23,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:23,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:23,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,695 INFO L87 Difference]: Start difference. First operand 395 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,778 INFO L93 Difference]: Finished difference Result 647 states and 1900 transitions. [2021-03-11 14:35:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:23,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:23,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,779 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:35:23,779 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:35:23,779 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:35:23,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 403. [2021-03-11 14:35:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.4502487562189055) internal successors, (1387), 402 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1387 transitions. [2021-03-11 14:35:23,786 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1387 transitions. Word has length 22 [2021-03-11 14:35:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,787 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 1387 transitions. [2021-03-11 14:35:23,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1387 transitions. [2021-03-11 14:35:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:23,787 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,787 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-03-11 14:35:23,788 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,788 INFO L82 PathProgramCache]: Analyzing trace with hash -718085683, now seen corresponding path program 90 times [2021-03-11 14:35:23,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716001543] [2021-03-11 14:35:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:23,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:23,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:23,825 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:23,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:23,847 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:23,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:23,866 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:23,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:23,889 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:23,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:23,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:23,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716001543] [2021-03-11 14:35:23,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:23,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:23,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862457963] [2021-03-11 14:35:23,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:23,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:23,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:23,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:23,912 INFO L87 Difference]: Start difference. First operand 403 states and 1387 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:23,971 INFO L93 Difference]: Finished difference Result 649 states and 1897 transitions. [2021-03-11 14:35:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:23,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:23,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:23,973 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:35:23,973 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:35:23,973 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:35:23,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 390. [2021-03-11 14:35:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4961439588688945) internal successors, (1360), 389 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1360 transitions. [2021-03-11 14:35:23,979 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:23,980 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1360 transitions. [2021-03-11 14:35:23,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1360 transitions. [2021-03-11 14:35:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:23,980 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:23,980 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:23,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-03-11 14:35:23,980 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1139169165, now seen corresponding path program 91 times [2021-03-11 14:35:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:23,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167043593] [2021-03-11 14:35:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:23,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:23,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:23,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:23,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:23,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:24,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,020 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:24,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,071 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:24,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:24,096 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:24,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:24,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167043593] [2021-03-11 14:35:24,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:24,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212425703] [2021-03-11 14:35:24,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:24,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:24,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,120 INFO L87 Difference]: Start difference. First operand 390 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,191 INFO L93 Difference]: Finished difference Result 627 states and 1857 transitions. [2021-03-11 14:35:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:24,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,192 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:35:24,192 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:35:24,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:24,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:35:24,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 396. [2021-03-11 14:35:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.481012658227848) internal successors, (1375), 395 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1375 transitions. [2021-03-11 14:35:24,200 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:24,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,200 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1375 transitions. [2021-03-11 14:35:24,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,200 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1375 transitions. [2021-03-11 14:35:24,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:24,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-03-11 14:35:24,201 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1463618849, now seen corresponding path program 92 times [2021-03-11 14:35:24,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159501646] [2021-03-11 14:35:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:24,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:24,230 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,245 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:24,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:24,292 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:24,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:24,315 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:24,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159501646] [2021-03-11 14:35:24,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:24,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109622500] [2021-03-11 14:35:24,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:24,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:24,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,337 INFO L87 Difference]: Start difference. First operand 396 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,416 INFO L93 Difference]: Finished difference Result 631 states and 1863 transitions. [2021-03-11 14:35:24,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:24,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,417 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:35:24,417 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:35:24,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:35:24,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 394. [2021-03-11 14:35:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.486005089058524) internal successors, (1370), 393 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1370 transitions. [2021-03-11 14:35:24,424 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,426 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1370 transitions. [2021-03-11 14:35:24,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,426 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1370 transitions. [2021-03-11 14:35:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:24,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-03-11 14:35:24,427 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash -603939363, now seen corresponding path program 93 times [2021-03-11 14:35:24,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479449363] [2021-03-11 14:35:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:24,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:24,455 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,497 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:24,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:24,532 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:24,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:24,555 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:24,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479449363] [2021-03-11 14:35:24,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:24,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961944395] [2021-03-11 14:35:24,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:24,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:24,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,577 INFO L87 Difference]: Start difference. First operand 394 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,646 INFO L93 Difference]: Finished difference Result 630 states and 1860 transitions. [2021-03-11 14:35:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,648 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:35:24,648 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:35:24,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:35:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 397. [2021-03-11 14:35:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.4722222222222223) internal successors, (1375), 396 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1375 transitions. [2021-03-11 14:35:24,655 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,655 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1375 transitions. [2021-03-11 14:35:24,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1375 transitions. [2021-03-11 14:35:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:24,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-03-11 14:35:24,656 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,656 INFO L82 PathProgramCache]: Analyzing trace with hash 712217941, now seen corresponding path program 94 times [2021-03-11 14:35:24,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104179242] [2021-03-11 14:35:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:24,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:24,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,697 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,716 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:24,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:24,740 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:24,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:24,767 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:24,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104179242] [2021-03-11 14:35:24,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:24,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84532302] [2021-03-11 14:35:24,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:24,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,793 INFO L87 Difference]: Start difference. First operand 397 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:24,858 INFO L93 Difference]: Finished difference Result 636 states and 1869 transitions. [2021-03-11 14:35:24,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:24,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:24,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:24,859 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:35:24,860 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:35:24,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:24,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:35:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 394. [2021-03-11 14:35:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4783715012722647) internal successors, (1367), 393 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1367 transitions. [2021-03-11 14:35:24,866 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:24,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:24,867 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1367 transitions. [2021-03-11 14:35:24,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1367 transitions. [2021-03-11 14:35:24,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:24,867 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:24,867 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:24,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-03-11 14:35:24,867 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:24,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:24,868 INFO L82 PathProgramCache]: Analyzing trace with hash -685177687, now seen corresponding path program 95 times [2021-03-11 14:35:24,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:24,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559534505] [2021-03-11 14:35:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:24,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:24,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:24,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:24,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:24,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:24,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:24,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:24,906 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:24,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:24,926 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:24,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:24,945 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:24,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:24,971 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:24,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:24,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559534505] [2021-03-11 14:35:24,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:24,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:24,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49876781] [2021-03-11 14:35:24,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:24,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:24,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:24,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:24,992 INFO L87 Difference]: Start difference. First operand 394 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,061 INFO L93 Difference]: Finished difference Result 643 states and 1886 transitions. [2021-03-11 14:35:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:25,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,062 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:35:25,062 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:35:25,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:25,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:35:25,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 402. [2021-03-11 14:35:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4438902743142146) internal successors, (1381), 401 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1381 transitions. [2021-03-11 14:35:25,069 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1381 transitions. Word has length 22 [2021-03-11 14:35:25,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,070 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1381 transitions. [2021-03-11 14:35:25,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1381 transitions. [2021-03-11 14:35:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:25,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,070 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-03-11 14:35:25,070 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1670787293, now seen corresponding path program 96 times [2021-03-11 14:35:25,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706768354] [2021-03-11 14:35:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,084 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:25,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:25,109 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,130 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,148 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:25,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:25,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:25,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706768354] [2021-03-11 14:35:25,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:25,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284382657] [2021-03-11 14:35:25,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:25,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,200 INFO L87 Difference]: Start difference. First operand 402 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,264 INFO L93 Difference]: Finished difference Result 645 states and 1883 transitions. [2021-03-11 14:35:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,265 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:35:25,265 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:35:25,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:25,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:35:25,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 386. [2021-03-11 14:35:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.5064935064935066) internal successors, (1350), 385 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1350 transitions. [2021-03-11 14:35:25,273 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1350 transitions. Word has length 22 [2021-03-11 14:35:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,273 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1350 transitions. [2021-03-11 14:35:25,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1350 transitions. [2021-03-11 14:35:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:25,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-03-11 14:35:25,274 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1184996045, now seen corresponding path program 97 times [2021-03-11 14:35:25,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877113961] [2021-03-11 14:35:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,297 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,330 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,347 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:25,370 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:25,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877113961] [2021-03-11 14:35:25,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:25,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749136128] [2021-03-11 14:35:25,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:25,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:25,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,392 INFO L87 Difference]: Start difference. First operand 386 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,457 INFO L93 Difference]: Finished difference Result 589 states and 1763 transitions. [2021-03-11 14:35:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,458 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:35:25,458 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:35:25,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:25,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:35:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 391. [2021-03-11 14:35:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5) internal successors, (1365), 390 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1365 transitions. [2021-03-11 14:35:25,466 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,466 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1365 transitions. [2021-03-11 14:35:25,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1365 transitions. [2021-03-11 14:35:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:25,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-03-11 14:35:25,466 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash 425944913, now seen corresponding path program 98 times [2021-03-11 14:35:25,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868761053] [2021-03-11 14:35:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,479 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:25,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:25,544 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:25,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:25,566 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:25,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868761053] [2021-03-11 14:35:25,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:25,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645442054] [2021-03-11 14:35:25,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:25,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:25,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,588 INFO L87 Difference]: Start difference. First operand 391 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,664 INFO L93 Difference]: Finished difference Result 590 states and 1764 transitions. [2021-03-11 14:35:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:25,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:25,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,666 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:35:25,666 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:35:25,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:35:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 390. [2021-03-11 14:35:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5038560411311055) internal successors, (1363), 389 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1363 transitions. [2021-03-11 14:35:25,672 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,672 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1363 transitions. [2021-03-11 14:35:25,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1363 transitions. [2021-03-11 14:35:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:25,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-03-11 14:35:25,673 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1509533397, now seen corresponding path program 99 times [2021-03-11 14:35:25,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484498891] [2021-03-11 14:35:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,700 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,714 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,734 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:25,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:25,760 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:25,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:25,783 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:25,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:25,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484498891] [2021-03-11 14:35:25,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:25,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:25,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699950387] [2021-03-11 14:35:25,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:25,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:25,805 INFO L87 Difference]: Start difference. First operand 390 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:25,855 INFO L93 Difference]: Finished difference Result 593 states and 1770 transitions. [2021-03-11 14:35:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:25,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:25,856 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:35:25,856 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:25,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:25,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 391. [2021-03-11 14:35:25,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4974358974358974) internal successors, (1364), 390 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1364 transitions. [2021-03-11 14:35:25,877 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:25,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:25,877 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1364 transitions. [2021-03-11 14:35:25,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1364 transitions. [2021-03-11 14:35:25,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:25,877 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:25,877 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:25,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-03-11 14:35:25,877 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash 436448017, now seen corresponding path program 100 times [2021-03-11 14:35:25,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:25,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075409554] [2021-03-11 14:35:25,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:25,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:25,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:25,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:25,891 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:25,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:25,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:25,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:25,914 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:25,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:25,933 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:25,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:25,968 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:25,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:25,994 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:25,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075409554] [2021-03-11 14:35:26,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725241412] [2021-03-11 14:35:26,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:26,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,018 INFO L87 Difference]: Start difference. First operand 391 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,087 INFO L93 Difference]: Finished difference Result 598 states and 1779 transitions. [2021-03-11 14:35:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:26,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,088 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:26,088 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:35:26,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:35:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 390. [2021-03-11 14:35:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.501285347043702) internal successors, (1362), 389 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1362 transitions. [2021-03-11 14:35:26,095 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,095 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1362 transitions. [2021-03-11 14:35:26,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,095 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1362 transitions. [2021-03-11 14:35:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:26,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-03-11 14:35:26,096 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1520036501, now seen corresponding path program 101 times [2021-03-11 14:35:26,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884688469] [2021-03-11 14:35:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,109 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,133 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,157 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:26,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,184 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:26,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:26,218 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:26,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884688469] [2021-03-11 14:35:26,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:26,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990395697] [2021-03-11 14:35:26,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:26,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,240 INFO L87 Difference]: Start difference. First operand 390 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,308 INFO L93 Difference]: Finished difference Result 596 states and 1776 transitions. [2021-03-11 14:35:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:26,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:26,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,309 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:35:26,309 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:35:26,309 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:26,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:35:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 392. [2021-03-11 14:35:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4910485933503836) internal successors, (1365), 391 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1365 transitions. [2021-03-11 14:35:26,316 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,316 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1365 transitions. [2021-03-11 14:35:26,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1365 transitions. [2021-03-11 14:35:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:26,316 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,316 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-03-11 14:35:26,316 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1163989837, now seen corresponding path program 102 times [2021-03-11 14:35:26,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593473374] [2021-03-11 14:35:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:26,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:26,377 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:26,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:26,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:26,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:26,426 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:26,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593473374] [2021-03-11 14:35:26,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:26,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24518412] [2021-03-11 14:35:26,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:26,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:26,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,448 INFO L87 Difference]: Start difference. First operand 392 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,519 INFO L93 Difference]: Finished difference Result 600 states and 1782 transitions. [2021-03-11 14:35:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:26,519 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:26,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,520 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:35:26,520 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:35:26,520 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:26,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:35:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 389. [2021-03-11 14:35:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:35:26,527 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,527 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:35:26,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:35:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:26,527 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,528 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-03-11 14:35:26,528 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2069735453, now seen corresponding path program 103 times [2021-03-11 14:35:26,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65666952] [2021-03-11 14:35:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,549 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,564 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,584 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,602 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:26,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:26,633 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:26,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65666952] [2021-03-11 14:35:26,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:26,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957162619] [2021-03-11 14:35:26,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:26,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,655 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,714 INFO L93 Difference]: Finished difference Result 594 states and 1772 transitions. [2021-03-11 14:35:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,716 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:26,716 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:35:26,716 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:26,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:35:26,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 392. [2021-03-11 14:35:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.49616368286445) internal successors, (1367), 391 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1367 transitions. [2021-03-11 14:35:26,722 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,723 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1367 transitions. [2021-03-11 14:35:26,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1367 transitions. [2021-03-11 14:35:26,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:26,723 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,723 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-03-11 14:35:26,723 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,724 INFO L82 PathProgramCache]: Analyzing trace with hash -614290885, now seen corresponding path program 104 times [2021-03-11 14:35:26,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086564439] [2021-03-11 14:35:26,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,760 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,778 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:26,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:26,796 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:26,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:26,819 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:26,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:26,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086564439] [2021-03-11 14:35:26,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:26,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:26,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169122993] [2021-03-11 14:35:26,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:26,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:26,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:26,841 INFO L87 Difference]: Start difference. First operand 392 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:26,920 INFO L93 Difference]: Finished difference Result 595 states and 1773 transitions. [2021-03-11 14:35:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:26,921 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:35:26,921 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:26,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:26,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 391. [2021-03-11 14:35:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5) internal successors, (1365), 390 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1365 transitions. [2021-03-11 14:35:26,928 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:26,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:26,928 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1365 transitions. [2021-03-11 14:35:26,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1365 transitions. [2021-03-11 14:35:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:26,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:26,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:26,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-03-11 14:35:26,929 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:26,929 INFO L82 PathProgramCache]: Analyzing trace with hash -118447723, now seen corresponding path program 105 times [2021-03-11 14:35:26,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:26,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038327793] [2021-03-11 14:35:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:26,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:26,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:26,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:26,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:26,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:26,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:26,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:26,970 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:26,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:26,991 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:26,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:27,017 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:27,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:27,039 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:27,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038327793] [2021-03-11 14:35:27,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:27,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385800833] [2021-03-11 14:35:27,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:27,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:27,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,061 INFO L87 Difference]: Start difference. First operand 391 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,112 INFO L93 Difference]: Finished difference Result 601 states and 1784 transitions. [2021-03-11 14:35:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,113 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:35:27,113 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:35:27,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:35:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 393. [2021-03-11 14:35:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.489795918367347) internal successors, (1368), 392 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1368 transitions. [2021-03-11 14:35:27,120 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,120 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1368 transitions. [2021-03-11 14:35:27,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,120 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1368 transitions. [2021-03-11 14:35:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:27,120 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-03-11 14:35:27,121 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,121 INFO L82 PathProgramCache]: Analyzing trace with hash -656303301, now seen corresponding path program 106 times [2021-03-11 14:35:27,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662835421] [2021-03-11 14:35:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,144 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,183 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:27,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:27,210 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:27,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:27,233 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:27,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662835421] [2021-03-11 14:35:27,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:27,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241541505] [2021-03-11 14:35:27,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:27,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,255 INFO L87 Difference]: Start difference. First operand 393 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,308 INFO L93 Difference]: Finished difference Result 608 states and 1796 transitions. [2021-03-11 14:35:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:27,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:27,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,309 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:35:27,309 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:27,309 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:27,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 391. [2021-03-11 14:35:27,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.494871794871795) internal successors, (1363), 390 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1363 transitions. [2021-03-11 14:35:27,316 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,316 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1363 transitions. [2021-03-11 14:35:27,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1363 transitions. [2021-03-11 14:35:27,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:27,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-03-11 14:35:27,319 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,319 INFO L82 PathProgramCache]: Analyzing trace with hash -107944619, now seen corresponding path program 107 times [2021-03-11 14:35:27,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228702294] [2021-03-11 14:35:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,332 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,343 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,358 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:27,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:27,404 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:27,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:27,426 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:27,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228702294] [2021-03-11 14:35:27,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:27,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413803574] [2021-03-11 14:35:27,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:27,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:27,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,448 INFO L87 Difference]: Start difference. First operand 391 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,514 INFO L93 Difference]: Finished difference Result 604 states and 1789 transitions. [2021-03-11 14:35:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:27,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,515 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:35:27,515 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:27,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 394. [2021-03-11 14:35:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.480916030534351) internal successors, (1368), 393 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1368 transitions. [2021-03-11 14:35:27,522 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,522 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1368 transitions. [2021-03-11 14:35:27,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1368 transitions. [2021-03-11 14:35:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:27,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,523 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-03-11 14:35:27,523 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2038226141, now seen corresponding path program 108 times [2021-03-11 14:35:27,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527954333] [2021-03-11 14:35:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,546 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,561 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,581 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:27,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:27,607 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:27,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:27,630 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:27,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527954333] [2021-03-11 14:35:27,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:27,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648770886] [2021-03-11 14:35:27,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:27,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:27,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,652 INFO L87 Difference]: Start difference. First operand 394 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,708 INFO L93 Difference]: Finished difference Result 610 states and 1798 transitions. [2021-03-11 14:35:27,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:27,709 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,710 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:35:27,710 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:35:27,710 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:35:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 389. [2021-03-11 14:35:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:35:27,716 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,716 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:35:27,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,716 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:35:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:27,717 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,717 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,717 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-03-11 14:35:27,717 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1899635619, now seen corresponding path program 109 times [2021-03-11 14:35:27,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127735015] [2021-03-11 14:35:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,757 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,777 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:27,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:27,804 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:27,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:27,827 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:27,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:27,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127735015] [2021-03-11 14:35:27,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:27,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:27,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463481223] [2021-03-11 14:35:27,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:27,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:27,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:27,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:27,849 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:27,900 INFO L93 Difference]: Finished difference Result 608 states and 1801 transitions. [2021-03-11 14:35:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:27,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:27,902 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:35:27,902 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:35:27,902 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:35:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 393. [2021-03-11 14:35:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4872448979591835) internal successors, (1367), 392 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1367 transitions. [2021-03-11 14:35:27,909 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:27,909 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1367 transitions. [2021-03-11 14:35:27,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1367 transitions. [2021-03-11 14:35:27,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:27,909 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:27,909 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:27,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-03-11 14:35:27,910 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:27,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:27,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1322246297, now seen corresponding path program 110 times [2021-03-11 14:35:27,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:27,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989593007] [2021-03-11 14:35:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:27,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:27,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:27,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:27,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:27,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:27,941 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:27,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:27,956 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:27,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:27,975 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:27,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:28,001 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:28,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:28,024 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:28,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989593007] [2021-03-11 14:35:28,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382957012] [2021-03-11 14:35:28,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:28,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,047 INFO L87 Difference]: Start difference. First operand 393 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,135 INFO L93 Difference]: Finished difference Result 613 states and 1810 transitions. [2021-03-11 14:35:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:28,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,136 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:35:28,137 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:35:28,137 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:28,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:35:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 392. [2021-03-11 14:35:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4910485933503836) internal successors, (1365), 391 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1365 transitions. [2021-03-11 14:35:28,144 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,144 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1365 transitions. [2021-03-11 14:35:28,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1365 transitions. [2021-03-11 14:35:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:28,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-03-11 14:35:28,144 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1807586355, now seen corresponding path program 111 times [2021-03-11 14:35:28,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605690733] [2021-03-11 14:35:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,207 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:28,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:28,235 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:28,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:28,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:28,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605690733] [2021-03-11 14:35:28,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:28,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368970361] [2021-03-11 14:35:28,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:28,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,289 INFO L87 Difference]: Start difference. First operand 392 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,349 INFO L93 Difference]: Finished difference Result 611 states and 1805 transitions. [2021-03-11 14:35:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:28,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,351 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:35:28,351 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:28,351 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 394. [2021-03-11 14:35:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.480916030534351) internal successors, (1368), 393 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1368 transitions. [2021-03-11 14:35:28,358 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,358 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1368 transitions. [2021-03-11 14:35:28,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1368 transitions. [2021-03-11 14:35:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:28,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,359 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-03-11 14:35:28,359 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1269730777, now seen corresponding path program 112 times [2021-03-11 14:35:28,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840052796] [2021-03-11 14:35:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:28,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:28,452 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:28,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:28,478 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:28,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840052796] [2021-03-11 14:35:28,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:28,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653384872] [2021-03-11 14:35:28,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:28,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:28,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,504 INFO L87 Difference]: Start difference. First operand 394 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,556 INFO L93 Difference]: Finished difference Result 618 states and 1817 transitions. [2021-03-11 14:35:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,558 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:28,558 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:35:28,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:35:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 392. [2021-03-11 14:35:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4859335038363173) internal successors, (1363), 391 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1363 transitions. [2021-03-11 14:35:28,564 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:28,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,564 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1363 transitions. [2021-03-11 14:35:28,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1363 transitions. [2021-03-11 14:35:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:28,565 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,565 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,565 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-03-11 14:35:28,565 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1828592563, now seen corresponding path program 113 times [2021-03-11 14:35:28,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60584945] [2021-03-11 14:35:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:28,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:28,644 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:28,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:28,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:28,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60584945] [2021-03-11 14:35:28,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:28,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474289313] [2021-03-11 14:35:28,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:28,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:28,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,689 INFO L87 Difference]: Start difference. First operand 392 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,759 INFO L93 Difference]: Finished difference Result 627 states and 1839 transitions. [2021-03-11 14:35:28,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:28,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:28,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,760 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:35:28,760 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:35:28,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:28,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:35:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 400. [2021-03-11 14:35:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4511278195488724) internal successors, (1377), 399 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1377 transitions. [2021-03-11 14:35:28,767 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1377 transitions. Word has length 22 [2021-03-11 14:35:28,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,767 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1377 transitions. [2021-03-11 14:35:28,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,767 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1377 transitions. [2021-03-11 14:35:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:28,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,768 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-03-11 14:35:28,768 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1931144931, now seen corresponding path program 114 times [2021-03-11 14:35:28,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606027384] [2021-03-11 14:35:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,790 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:28,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:28,823 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:28,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:28,841 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:28,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:28,864 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:28,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:28,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:28,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606027384] [2021-03-11 14:35:28,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:28,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:28,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984406374] [2021-03-11 14:35:28,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:28,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:28,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:28,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:28,886 INFO L87 Difference]: Start difference. First operand 400 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:28,941 INFO L93 Difference]: Finished difference Result 629 states and 1836 transitions. [2021-03-11 14:35:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:28,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:28,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:28,942 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:35:28,942 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:28,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:28,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 389. [2021-03-11 14:35:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4922680412371134) internal successors, (1355), 388 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1355 transitions. [2021-03-11 14:35:28,949 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:28,949 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1355 transitions. [2021-03-11 14:35:28,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1355 transitions. [2021-03-11 14:35:28,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:28,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:28,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:28,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-03-11 14:35:28,950 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash 36901563, now seen corresponding path program 115 times [2021-03-11 14:35:28,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:28,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238627855] [2021-03-11 14:35:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:28,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:28,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:28,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:28,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:28,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:28,976 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:28,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:28,991 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:28,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,012 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:29,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:29,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:29,061 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:29,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238627855] [2021-03-11 14:35:29,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:29,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121136605] [2021-03-11 14:35:29,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:29,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:29,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,083 INFO L87 Difference]: Start difference. First operand 389 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,161 INFO L93 Difference]: Finished difference Result 615 states and 1817 transitions. [2021-03-11 14:35:29,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:29,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,162 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:35:29,162 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:35:29,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:29,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:35:29,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 395. [2021-03-11 14:35:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4771573604060912) internal successors, (1370), 394 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1370 transitions. [2021-03-11 14:35:29,168 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:29,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,169 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1370 transitions. [2021-03-11 14:35:29,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,169 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1370 transitions. [2021-03-11 14:35:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:29,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-03-11 14:35:29,169 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1647842521, now seen corresponding path program 116 times [2021-03-11 14:35:29,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739867398] [2021-03-11 14:35:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,184 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,194 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:29,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:29,258 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:29,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:29,281 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:29,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:29,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739867398] [2021-03-11 14:35:29,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:29,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975333301] [2021-03-11 14:35:29,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:29,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,303 INFO L87 Difference]: Start difference. First operand 395 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,372 INFO L93 Difference]: Finished difference Result 619 states and 1823 transitions. [2021-03-11 14:35:29,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:29,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,373 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:35:29,373 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:35:29,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:29,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:35:29,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 393. [2021-03-11 14:35:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.482142857142857) internal successors, (1365), 392 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1365 transitions. [2021-03-11 14:35:29,380 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,380 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1365 transitions. [2021-03-11 14:35:29,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,380 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1365 transitions. [2021-03-11 14:35:29,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:29,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-03-11 14:35:29,381 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -550843759, now seen corresponding path program 117 times [2021-03-11 14:35:29,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992270069] [2021-03-11 14:35:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,395 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,441 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:29,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:29,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:29,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:29,503 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:29,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992270069] [2021-03-11 14:35:29,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:29,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824316849] [2021-03-11 14:35:29,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:29,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:29,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,528 INFO L87 Difference]: Start difference. First operand 393 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,596 INFO L93 Difference]: Finished difference Result 618 states and 1820 transitions. [2021-03-11 14:35:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,597 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:29,597 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:35:29,597 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:35:29,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 396. [2021-03-11 14:35:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4683544303797467) internal successors, (1370), 395 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1370 transitions. [2021-03-11 14:35:29,604 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,604 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1370 transitions. [2021-03-11 14:35:29,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,604 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1370 transitions. [2021-03-11 14:35:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:29,605 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,605 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-03-11 14:35:29,605 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1595327001, now seen corresponding path program 118 times [2021-03-11 14:35:29,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511586825] [2021-03-11 14:35:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,644 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:29,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:29,691 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:29,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:29,714 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:29,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511586825] [2021-03-11 14:35:29,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:29,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950217502] [2021-03-11 14:35:29,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:29,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:29,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,736 INFO L87 Difference]: Start difference. First operand 396 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:29,795 INFO L93 Difference]: Finished difference Result 624 states and 1829 transitions. [2021-03-11 14:35:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:29,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:29,796 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:35:29,796 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:35:29,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:29,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:35:29,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 393. [2021-03-11 14:35:29,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4744897959183674) internal successors, (1362), 392 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1362 transitions. [2021-03-11 14:35:29,803 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:29,803 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1362 transitions. [2021-03-11 14:35:29,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1362 transitions. [2021-03-11 14:35:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:29,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:29,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:29,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-03-11 14:35:29,804 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:29,804 INFO L82 PathProgramCache]: Analyzing trace with hash -540340655, now seen corresponding path program 119 times [2021-03-11 14:35:29,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:29,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840278437] [2021-03-11 14:35:29,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:29,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:29,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:29,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:29,816 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:29,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:29,826 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:29,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:29,840 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:29,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:29,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:29,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:29,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:29,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:29,901 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:29,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:29,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840278437] [2021-03-11 14:35:29,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:29,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:29,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451964778] [2021-03-11 14:35:29,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:29,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:29,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:29,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:29,923 INFO L87 Difference]: Start difference. First operand 393 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,004 INFO L93 Difference]: Finished difference Result 631 states and 1846 transitions. [2021-03-11 14:35:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,006 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:35:30,006 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:35:30,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:30,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:35:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 401. [2021-03-11 14:35:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.44) internal successors, (1376), 400 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1376 transitions. [2021-03-11 14:35:30,013 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1376 transitions. Word has length 22 [2021-03-11 14:35:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,013 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1376 transitions. [2021-03-11 14:35:30,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1376 transitions. [2021-03-11 14:35:30,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:30,013 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,013 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-03-11 14:35:30,014 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,014 INFO L82 PathProgramCache]: Analyzing trace with hash -5110853, now seen corresponding path program 120 times [2021-03-11 14:35:30,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222186444] [2021-03-11 14:35:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:30,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:30,038 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:30,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:30,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:30,074 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:30,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:30,092 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:30,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:30,115 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:30,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:30,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222186444] [2021-03-11 14:35:30,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:30,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015461943] [2021-03-11 14:35:30,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:30,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,137 INFO L87 Difference]: Start difference. First operand 401 states and 1376 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,204 INFO L93 Difference]: Finished difference Result 633 states and 1843 transitions. [2021-03-11 14:35:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:30,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,206 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:35:30,206 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:35:30,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:35:30,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 383. [2021-03-11 14:35:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.513089005235602) internal successors, (1342), 382 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1342 transitions. [2021-03-11 14:35:30,212 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1342 transitions. Word has length 22 [2021-03-11 14:35:30,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,213 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1342 transitions. [2021-03-11 14:35:30,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1342 transitions. [2021-03-11 14:35:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:30,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-03-11 14:35:30,214 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,214 INFO L82 PathProgramCache]: Analyzing trace with hash -729097841, now seen corresponding path program 121 times [2021-03-11 14:35:30,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569039460] [2021-03-11 14:35:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:30,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:30,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:30,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:30,280 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:30,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:30,320 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:30,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569039460] [2021-03-11 14:35:30,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:30,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775028263] [2021-03-11 14:35:30,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:30,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,342 INFO L87 Difference]: Start difference. First operand 383 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,413 INFO L93 Difference]: Finished difference Result 579 states and 1742 transitions. [2021-03-11 14:35:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,415 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:35:30,415 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:30,415 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 390. [2021-03-11 14:35:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.51413881748072) internal successors, (1367), 389 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1367 transitions. [2021-03-11 14:35:30,421 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:30,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,422 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1367 transitions. [2021-03-11 14:35:30,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1367 transitions. [2021-03-11 14:35:30,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:30,422 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,422 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-03-11 14:35:30,422 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,423 INFO L82 PathProgramCache]: Analyzing trace with hash -574605699, now seen corresponding path program 122 times [2021-03-11 14:35:30,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996413114] [2021-03-11 14:35:30,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:30,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:30,460 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:30,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:30,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:30,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:30,498 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:30,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:30,521 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996413114] [2021-03-11 14:35:30,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:30,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636368657] [2021-03-11 14:35:30,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:30,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:30,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,543 INFO L87 Difference]: Start difference. First operand 390 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,608 INFO L93 Difference]: Finished difference Result 577 states and 1737 transitions. [2021-03-11 14:35:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,609 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:35:30,609 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:35:30,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:35:30,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 389. [2021-03-11 14:35:30,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.518041237113402) internal successors, (1365), 388 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1365 transitions. [2021-03-11 14:35:30,616 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:30,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,616 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1365 transitions. [2021-03-11 14:35:30,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,616 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1365 transitions. [2021-03-11 14:35:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:30,617 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,617 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-03-11 14:35:30,617 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,617 INFO L82 PathProgramCache]: Analyzing trace with hash -222751575, now seen corresponding path program 123 times [2021-03-11 14:35:30,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976784517] [2021-03-11 14:35:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,636 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:30,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:30,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:30,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:30,671 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:30,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:30,699 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:30,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:30,721 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976784517] [2021-03-11 14:35:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:30,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287002568] [2021-03-11 14:35:30,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:30,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,743 INFO L87 Difference]: Start difference. First operand 389 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:30,814 INFO L93 Difference]: Finished difference Result 589 states and 1762 transitions. [2021-03-11 14:35:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:30,816 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:35:30,816 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:35:30,816 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:35:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 393. [2021-03-11 14:35:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.5) internal successors, (1372), 392 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1372 transitions. [2021-03-11 14:35:30,822 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:30,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:30,822 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1372 transitions. [2021-03-11 14:35:30,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1372 transitions. [2021-03-11 14:35:30,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:30,823 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:30,823 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:30,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-03-11 14:35:30,823 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:30,824 INFO L82 PathProgramCache]: Analyzing trace with hash -149444163, now seen corresponding path program 124 times [2021-03-11 14:35:30,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:30,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122061851] [2021-03-11 14:35:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:30,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:30,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:30,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:30,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:30,841 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:30,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:30,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:30,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:30,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:30,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:30,905 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:30,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:30,928 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:30,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:30,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122061851] [2021-03-11 14:35:30,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:30,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:30,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619792446] [2021-03-11 14:35:30,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:30,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:30,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:30,950 INFO L87 Difference]: Start difference. First operand 393 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,024 INFO L93 Difference]: Finished difference Result 594 states and 1768 transitions. [2021-03-11 14:35:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,025 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:31,025 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:31,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:31,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 389. [2021-03-11 14:35:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5128865979381443) internal successors, (1363), 388 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1363 transitions. [2021-03-11 14:35:31,032 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,032 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1363 transitions. [2021-03-11 14:35:31,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1363 transitions. [2021-03-11 14:35:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:31,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,033 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-03-11 14:35:31,033 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1668697287, now seen corresponding path program 125 times [2021-03-11 14:35:31,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720947710] [2021-03-11 14:35:31,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:31,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:31,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:31,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:31,117 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:31,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:31,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:31,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720947710] [2021-03-11 14:35:31,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:31,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122527101] [2021-03-11 14:35:31,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:31,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:31,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,162 INFO L87 Difference]: Start difference. First operand 389 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,221 INFO L93 Difference]: Finished difference Result 583 states and 1746 transitions. [2021-03-11 14:35:31,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:31,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:31,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,222 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:35:31,223 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:31,223 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 391. [2021-03-11 14:35:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5025641025641026) internal successors, (1366), 390 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1366 transitions. [2021-03-11 14:35:31,229 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:31,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,229 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1366 transitions. [2021-03-11 14:35:31,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1366 transitions. [2021-03-11 14:35:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:31,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-03-11 14:35:31,230 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2088414431, now seen corresponding path program 126 times [2021-03-11 14:35:31,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520713949] [2021-03-11 14:35:31,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,249 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:31,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:31,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:31,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:31,311 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:31,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:31,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:31,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520713949] [2021-03-11 14:35:31,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:31,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60676310] [2021-03-11 14:35:31,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:31,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:31,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,356 INFO L87 Difference]: Start difference. First operand 391 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,418 INFO L93 Difference]: Finished difference Result 590 states and 1758 transitions. [2021-03-11 14:35:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:31,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,419 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:35:31,419 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:35:31,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:35:31,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 387. [2021-03-11 14:35:31,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.518134715025907) internal successors, (1358), 386 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1358 transitions. [2021-03-11 14:35:31,426 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:31,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,426 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1358 transitions. [2021-03-11 14:35:31,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,426 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1358 transitions. [2021-03-11 14:35:31,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:31,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-03-11 14:35:31,427 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,427 INFO L82 PathProgramCache]: Analyzing trace with hash -768099159, now seen corresponding path program 127 times [2021-03-11 14:35:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263028450] [2021-03-11 14:35:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:31,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:31,476 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:31,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:31,516 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:31,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263028450] [2021-03-11 14:35:31,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:31,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453327392] [2021-03-11 14:35:31,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:31,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:31,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,538 INFO L87 Difference]: Start difference. First operand 387 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,612 INFO L93 Difference]: Finished difference Result 569 states and 1719 transitions. [2021-03-11 14:35:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:31,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:31,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,613 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:35:31,614 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:31,614 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:31,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:31,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 389. [2021-03-11 14:35:31,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5103092783505154) internal successors, (1362), 388 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1362 transitions. [2021-03-11 14:35:31,620 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,620 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1362 transitions. [2021-03-11 14:35:31,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1362 transitions. [2021-03-11 14:35:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:31,621 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,621 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-03-11 14:35:31,621 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,621 INFO L82 PathProgramCache]: Analyzing trace with hash -613607017, now seen corresponding path program 128 times [2021-03-11 14:35:31,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969031343] [2021-03-11 14:35:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,644 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:31,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:31,683 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,701 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:31,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:31,725 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:31,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969031343] [2021-03-11 14:35:31,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:31,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702812865] [2021-03-11 14:35:31,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:31,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:31,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,755 INFO L87 Difference]: Start difference. First operand 389 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:31,820 INFO L93 Difference]: Finished difference Result 567 states and 1714 transitions. [2021-03-11 14:35:31,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:31,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:31,821 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:35:31,821 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:35:31,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 116.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:35:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 388. [2021-03-11 14:35:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5142118863049094) internal successors, (1360), 387 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1360 transitions. [2021-03-11 14:35:31,828 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:31,828 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1360 transitions. [2021-03-11 14:35:31,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1360 transitions. [2021-03-11 14:35:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:31,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:31,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:31,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-03-11 14:35:31,828 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1926430283, now seen corresponding path program 129 times [2021-03-11 14:35:31,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:31,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457257438] [2021-03-11 14:35:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:31,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:31,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:31,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:31,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:31,847 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:31,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:31,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:31,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:31,876 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:31,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:31,894 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:31,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:31,916 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:31,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:31,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457257438] [2021-03-11 14:35:31,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:31,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:31,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186266999] [2021-03-11 14:35:31,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:31,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:31,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:31,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:31,938 INFO L87 Difference]: Start difference. First operand 388 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,016 INFO L93 Difference]: Finished difference Result 571 states and 1723 transitions. [2021-03-11 14:35:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:32,016 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:32,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,017 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:35:32,017 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:35:32,017 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:32,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:35:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 390. [2021-03-11 14:35:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5038560411311055) internal successors, (1363), 389 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1363 transitions. [2021-03-11 14:35:32,024 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,024 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1363 transitions. [2021-03-11 14:35:32,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1363 transitions. [2021-03-11 14:35:32,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:32,024 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,024 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-03-11 14:35:32,024 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1423888731, now seen corresponding path program 130 times [2021-03-11 14:35:32,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418676430] [2021-03-11 14:35:32,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,056 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:32,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:32,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:32,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:32,108 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:32,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418676430] [2021-03-11 14:35:32,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:32,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686925854] [2021-03-11 14:35:32,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:32,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:32,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,130 INFO L87 Difference]: Start difference. First operand 390 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,217 INFO L93 Difference]: Finished difference Result 570 states and 1719 transitions. [2021-03-11 14:35:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,218 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:35:32,218 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:32,218 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:32,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 388. [2021-03-11 14:35:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.511627906976744) internal successors, (1359), 387 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1359 transitions. [2021-03-11 14:35:32,225 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,225 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1359 transitions. [2021-03-11 14:35:32,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1359 transitions. [2021-03-11 14:35:32,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:32,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,225 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-03-11 14:35:32,225 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,226 INFO L82 PathProgramCache]: Analyzing trace with hash 480484571, now seen corresponding path program 131 times [2021-03-11 14:35:32,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105368754] [2021-03-11 14:35:32,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,261 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:32,275 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:32,293 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:32,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:32,316 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:32,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105368754] [2021-03-11 14:35:32,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:32,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949195611] [2021-03-11 14:35:32,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:32,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:32,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,338 INFO L87 Difference]: Start difference. First operand 388 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,397 INFO L93 Difference]: Finished difference Result 566 states and 1711 transitions. [2021-03-11 14:35:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:32,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,398 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:35:32,398 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:35:32,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:32,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:35:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 389. [2021-03-11 14:35:32,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:35:32,404 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:32,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,405 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:35:32,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:35:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:32,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-03-11 14:35:32,405 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2091425529, now seen corresponding path program 132 times [2021-03-11 14:35:32,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547852429] [2021-03-11 14:35:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,423 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:32,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:32,452 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:32,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:32,471 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:32,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:32,493 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:32,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547852429] [2021-03-11 14:35:32,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:32,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094042871] [2021-03-11 14:35:32,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:32,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:32,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,519 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,597 INFO L93 Difference]: Finished difference Result 567 states and 1712 transitions. [2021-03-11 14:35:32,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:32,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:32,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,598 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:35:32,598 INFO L226 Difference]: Without dead ends: 555 [2021-03-11 14:35:32,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-11 14:35:32,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-03-11 14:35:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5155440414507773) internal successors, (1357), 386 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1357 transitions. [2021-03-11 14:35:32,605 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,605 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1357 transitions. [2021-03-11 14:35:32,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,605 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1357 transitions. [2021-03-11 14:35:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:32,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-03-11 14:35:32,606 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,606 INFO L82 PathProgramCache]: Analyzing trace with hash 443295345, now seen corresponding path program 133 times [2021-03-11 14:35:32,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25167097] [2021-03-11 14:35:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,626 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:32,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:32,662 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,680 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:32,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:32,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:32,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:32,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25167097] [2021-03-11 14:35:32,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:32,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581176148] [2021-03-11 14:35:32,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:32,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:32,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,725 INFO L87 Difference]: Start difference. First operand 387 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:32,809 INFO L93 Difference]: Finished difference Result 585 states and 1756 transitions. [2021-03-11 14:35:32,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:32,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:32,810 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:32,810 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:32,810 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 392. [2021-03-11 14:35:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:35:32,817 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:32,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:32,817 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:35:32,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:32,817 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:35:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:32,818 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:32,818 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:32,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-03-11 14:35:32,818 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:32,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:32,818 INFO L82 PathProgramCache]: Analyzing trace with hash -59246207, now seen corresponding path program 134 times [2021-03-11 14:35:32,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:32,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758465048] [2021-03-11 14:35:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:32,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:32,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:32,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:32,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:32,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:32,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:32,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:32,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:32,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:32,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:32,895 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:32,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:32,919 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:32,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:32,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:32,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758465048] [2021-03-11 14:35:32,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:32,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:32,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818671759] [2021-03-11 14:35:32,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:32,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:32,941 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,025 INFO L93 Difference]: Finished difference Result 584 states and 1752 transitions. [2021-03-11 14:35:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:33,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,026 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:35:33,026 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:35:33,026 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:33,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:35:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 390. [2021-03-11 14:35:33,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:35:33,032 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,033 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:35:33,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:35:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:33,033 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,033 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,033 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-03-11 14:35:33,033 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1744887831, now seen corresponding path program 135 times [2021-03-11 14:35:33,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717665248] [2021-03-11 14:35:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:33,051 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:33,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:33,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:33,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:33,137 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:33,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717665248] [2021-03-11 14:35:33,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:33,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713085237] [2021-03-11 14:35:33,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:33,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:33,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,159 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,248 INFO L93 Difference]: Finished difference Result 593 states and 1770 transitions. [2021-03-11 14:35:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,250 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:35:33,250 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:33,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:33,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 394. [2021-03-11 14:35:33,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.491094147582697) internal successors, (1372), 393 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1372 transitions. [2021-03-11 14:35:33,256 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,256 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1372 transitions. [2021-03-11 14:35:33,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1372 transitions. [2021-03-11 14:35:33,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:33,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-03-11 14:35:33,257 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1671580419, now seen corresponding path program 136 times [2021-03-11 14:35:33,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102310269] [2021-03-11 14:35:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:33,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,290 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,311 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:33,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:33,338 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:33,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:33,362 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:33,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102310269] [2021-03-11 14:35:33,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:33,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713432747] [2021-03-11 14:35:33,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:33,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:33,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,384 INFO L87 Difference]: Start difference. First operand 394 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,457 INFO L93 Difference]: Finished difference Result 598 states and 1776 transitions. [2021-03-11 14:35:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,459 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:33,459 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:35:33,459 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:35:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 390. [2021-03-11 14:35:33,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.501285347043702) internal successors, (1362), 389 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1362 transitions. [2021-03-11 14:35:33,465 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,466 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1362 transitions. [2021-03-11 14:35:33,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1362 transitions. [2021-03-11 14:35:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:33,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,466 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,466 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-03-11 14:35:33,466 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1031791103, now seen corresponding path program 137 times [2021-03-11 14:35:33,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173800134] [2021-03-11 14:35:33,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:33,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,498 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:33,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:33,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:33,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:33,568 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:33,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173800134] [2021-03-11 14:35:33,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:33,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782476365] [2021-03-11 14:35:33,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:33,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:33,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,590 INFO L87 Difference]: Start difference. First operand 390 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,677 INFO L93 Difference]: Finished difference Result 590 states and 1760 transitions. [2021-03-11 14:35:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,678 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:35:33,678 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:35:33,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:35:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 393. [2021-03-11 14:35:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4872448979591835) internal successors, (1367), 392 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1367 transitions. [2021-03-11 14:35:33,685 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:33,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,685 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1367 transitions. [2021-03-11 14:35:33,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,685 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1367 transitions. [2021-03-11 14:35:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:33,686 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,686 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-03-11 14:35:33,686 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1947018889, now seen corresponding path program 138 times [2021-03-11 14:35:33,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162987729] [2021-03-11 14:35:33,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:33,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:33,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:33,740 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:33,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:33,766 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:33,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:33,790 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:33,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:33,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162987729] [2021-03-11 14:35:33,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:33,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:33,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682918206] [2021-03-11 14:35:33,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:33,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:33,812 INFO L87 Difference]: Start difference. First operand 393 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:33,875 INFO L93 Difference]: Finished difference Result 596 states and 1769 transitions. [2021-03-11 14:35:33,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:33,877 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:35:33,877 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:33,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 387. [2021-03-11 14:35:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.510362694300518) internal successors, (1355), 386 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1355 transitions. [2021-03-11 14:35:33,883 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:33,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:33,883 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1355 transitions. [2021-03-11 14:35:33,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:33,883 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1355 transitions. [2021-03-11 14:35:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:33,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:33,884 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:33,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-03-11 14:35:33,884 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:33,884 INFO L82 PathProgramCache]: Analyzing trace with hash 923383711, now seen corresponding path program 139 times [2021-03-11 14:35:33,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:33,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253426228] [2021-03-11 14:35:33,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:33,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:33,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:33,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:33,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:33,902 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:33,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:33,917 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:33,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:33,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:33,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:33,955 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:33,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:33,982 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:33,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:34,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253426228] [2021-03-11 14:35:34,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:34,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120125211] [2021-03-11 14:35:34,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:34,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,004 INFO L87 Difference]: Start difference. First operand 387 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,071 INFO L93 Difference]: Finished difference Result 574 states and 1726 transitions. [2021-03-11 14:35:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:34,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:34,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,072 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:35:34,072 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:34,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 390. [2021-03-11 14:35:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.501285347043702) internal successors, (1362), 389 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1362 transitions. [2021-03-11 14:35:34,079 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,079 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1362 transitions. [2021-03-11 14:35:34,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1362 transitions. [2021-03-11 14:35:34,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:34,079 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,079 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-03-11 14:35:34,080 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1760642627, now seen corresponding path program 140 times [2021-03-11 14:35:34,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9203401] [2021-03-11 14:35:34,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:34,098 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,113 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:34,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:34,151 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:34,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:34,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:34,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9203401] [2021-03-11 14:35:34,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:34,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605848200] [2021-03-11 14:35:34,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:34,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:34,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,196 INFO L87 Difference]: Start difference. First operand 390 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,269 INFO L93 Difference]: Finished difference Result 575 states and 1727 transitions. [2021-03-11 14:35:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,271 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:35:34,271 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:35:34,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:34,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:35:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 389. [2021-03-11 14:35:34,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:35:34,277 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,277 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:35:34,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:35:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:34,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-03-11 14:35:34,278 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1264799465, now seen corresponding path program 141 times [2021-03-11 14:35:34,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412302440] [2021-03-11 14:35:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:34,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,311 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:34,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:34,357 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:34,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:34,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:34,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412302440] [2021-03-11 14:35:34,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:34,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12932945] [2021-03-11 14:35:34,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:34,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:34,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,402 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,459 INFO L93 Difference]: Finished difference Result 581 states and 1738 transitions. [2021-03-11 14:35:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,461 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:34,461 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:35:34,461 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:35:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 391. [2021-03-11 14:35:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.494871794871795) internal successors, (1363), 390 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1363 transitions. [2021-03-11 14:35:34,467 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,467 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1363 transitions. [2021-03-11 14:35:34,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1363 transitions. [2021-03-11 14:35:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:34,468 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,468 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-03-11 14:35:34,468 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1802655043, now seen corresponding path program 142 times [2021-03-11 14:35:34,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491413561] [2021-03-11 14:35:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:34,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:34,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:34,549 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:34,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:34,573 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:34,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491413561] [2021-03-11 14:35:34,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:34,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177626963] [2021-03-11 14:35:34,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:34,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:34,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,595 INFO L87 Difference]: Start difference. First operand 391 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,656 INFO L93 Difference]: Finished difference Result 588 states and 1750 transitions. [2021-03-11 14:35:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:34,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,657 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:35:34,657 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:35:34,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:35:34,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 389. [2021-03-11 14:35:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:35:34,664 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:34,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,664 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:35:34,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,664 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:35:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:34,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,665 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-03-11 14:35:34,665 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1254296361, now seen corresponding path program 143 times [2021-03-11 14:35:34,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342408740] [2021-03-11 14:35:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:34,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,716 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:34,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:34,741 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:34,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:34,764 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:34,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:34,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342408740] [2021-03-11 14:35:34,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:34,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:34,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014038853] [2021-03-11 14:35:34,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:34,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:34,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:34,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:34,786 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:34,860 INFO L93 Difference]: Finished difference Result 584 states and 1743 transitions. [2021-03-11 14:35:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:34,861 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:35:34,861 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:34,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:34,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 392. [2021-03-11 14:35:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4859335038363173) internal successors, (1363), 391 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1363 transitions. [2021-03-11 14:35:34,868 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:34,868 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1363 transitions. [2021-03-11 14:35:34,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:34,868 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1363 transitions. [2021-03-11 14:35:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:34,869 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:34,869 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:34,869 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-03-11 14:35:34,869 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash 891874399, now seen corresponding path program 144 times [2021-03-11 14:35:34,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:34,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076085123] [2021-03-11 14:35:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:34,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:34,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:34,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:34,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:34,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:35:34,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:35:34,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:34,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:34,922 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:34,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:34,948 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:34,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:34,987 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:34,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076085123] [2021-03-11 14:35:35,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:35,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386378101] [2021-03-11 14:35:35,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:35,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:35,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,009 INFO L87 Difference]: Start difference. First operand 392 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,087 INFO L93 Difference]: Finished difference Result 590 states and 1752 transitions. [2021-03-11 14:35:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:35,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,088 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:35:35,088 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:35:35,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:35:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 385. [2021-03-11 14:35:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.515625) internal successors, (1350), 384 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1350 transitions. [2021-03-11 14:35:35,100 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1350 transitions. Word has length 22 [2021-03-11 14:35:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,100 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1350 transitions. [2021-03-11 14:35:35,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,100 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1350 transitions. [2021-03-11 14:35:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:35,101 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,101 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-03-11 14:35:35,101 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,101 INFO L82 PathProgramCache]: Analyzing trace with hash 331680249, now seen corresponding path program 145 times [2021-03-11 14:35:35,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331616516] [2021-03-11 14:35:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:35,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:35,127 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,146 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,163 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:35,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:35,185 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:35,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331616516] [2021-03-11 14:35:35,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:35,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190128636] [2021-03-11 14:35:35,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:35,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:35,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,207 INFO L87 Difference]: Start difference. First operand 385 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,281 INFO L93 Difference]: Finished difference Result 587 states and 1762 transitions. [2021-03-11 14:35:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:35,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,282 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:35:35,283 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:35:35,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:35,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:35:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 390. [2021-03-11 14:35:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:35:35,289 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:35,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,289 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:35:35,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,289 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:35:35,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:35,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-03-11 14:35:35,290 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,290 INFO L82 PathProgramCache]: Analyzing trace with hash 486172391, now seen corresponding path program 146 times [2021-03-11 14:35:35,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505546014] [2021-03-11 14:35:35,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:35,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:35,319 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,340 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:35,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:35,358 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:35,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:35,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:35,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505546014] [2021-03-11 14:35:35,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246532586] [2021-03-11 14:35:35,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:35,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,417 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,480 INFO L93 Difference]: Finished difference Result 585 states and 1757 transitions. [2021-03-11 14:35:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:35,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,482 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:35,482 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:35:35,482 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:35,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:35:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 389. [2021-03-11 14:35:35,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5128865979381443) internal successors, (1363), 388 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1363 transitions. [2021-03-11 14:35:35,488 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,488 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1363 transitions. [2021-03-11 14:35:35,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,489 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1363 transitions. [2021-03-11 14:35:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:35,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-03-11 14:35:35,489 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,489 INFO L82 PathProgramCache]: Analyzing trace with hash 838026515, now seen corresponding path program 147 times [2021-03-11 14:35:35,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894406810] [2021-03-11 14:35:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:35,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:35,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:35,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:35,563 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:35,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:35,589 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:35,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894406810] [2021-03-11 14:35:35,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:35,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711117186] [2021-03-11 14:35:35,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:35,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:35,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,615 INFO L87 Difference]: Start difference. First operand 389 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,688 INFO L93 Difference]: Finished difference Result 597 states and 1782 transitions. [2021-03-11 14:35:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,689 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:35:35,689 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:35:35,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:35:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 393. [2021-03-11 14:35:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4948979591836733) internal successors, (1370), 392 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1370 transitions. [2021-03-11 14:35:35,696 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,696 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1370 transitions. [2021-03-11 14:35:35,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1370 transitions. [2021-03-11 14:35:35,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:35,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-03-11 14:35:35,697 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 911333927, now seen corresponding path program 148 times [2021-03-11 14:35:35,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735487102] [2021-03-11 14:35:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:35,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:35,724 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:35,772 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:35,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:35,795 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:35,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:35,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:35,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735487102] [2021-03-11 14:35:35,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:35,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:35,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346980226] [2021-03-11 14:35:35,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:35,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:35,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:35,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:35,818 INFO L87 Difference]: Start difference. First operand 393 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:35,878 INFO L93 Difference]: Finished difference Result 602 states and 1788 transitions. [2021-03-11 14:35:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:35,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:35,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:35,879 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:35:35,880 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:35,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:35,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 389. [2021-03-11 14:35:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5077319587628866) internal successors, (1361), 388 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1361 transitions. [2021-03-11 14:35:35,886 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:35,886 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1361 transitions. [2021-03-11 14:35:35,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1361 transitions. [2021-03-11 14:35:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:35,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:35,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:35,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-03-11 14:35:35,887 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:35,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:35,887 INFO L82 PathProgramCache]: Analyzing trace with hash -607919197, now seen corresponding path program 149 times [2021-03-11 14:35:35,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:35,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401861544] [2021-03-11 14:35:35,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:35,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:35,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:35,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:35,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:35,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:35,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:35,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:35,935 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:35,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:35,961 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:35,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:35,984 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:35,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401861544] [2021-03-11 14:35:36,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002401928] [2021-03-11 14:35:36,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,009 INFO L87 Difference]: Start difference. First operand 389 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,068 INFO L93 Difference]: Finished difference Result 591 states and 1766 transitions. [2021-03-11 14:35:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,069 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:35:36,069 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:36,069 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:36,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 391. [2021-03-11 14:35:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4974358974358974) internal successors, (1364), 390 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1364 transitions. [2021-03-11 14:35:36,076 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,076 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1364 transitions. [2021-03-11 14:35:36,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1364 transitions. [2021-03-11 14:35:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:36,076 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,076 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-03-11 14:35:36,076 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1145774775, now seen corresponding path program 150 times [2021-03-11 14:35:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386162691] [2021-03-11 14:35:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:36,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:36,105 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:36,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:36,125 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:36,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:36,151 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:36,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:36,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:36,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386162691] [2021-03-11 14:35:36,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586734078] [2021-03-11 14:35:36,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,196 INFO L87 Difference]: Start difference. First operand 391 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,260 INFO L93 Difference]: Finished difference Result 598 states and 1778 transitions. [2021-03-11 14:35:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:36,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,261 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:36,261 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:35:36,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:35:36,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 387. [2021-03-11 14:35:36,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5129533678756477) internal successors, (1356), 386 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1356 transitions. [2021-03-11 14:35:36,268 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:36,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,268 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1356 transitions. [2021-03-11 14:35:36,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,268 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1356 transitions. [2021-03-11 14:35:36,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:36,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-03-11 14:35:36,269 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1364871763, now seen corresponding path program 151 times [2021-03-11 14:35:36,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996358038] [2021-03-11 14:35:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:36,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:36,296 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:36,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:36,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:36,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:36,350 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:36,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996358038] [2021-03-11 14:35:36,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909193187] [2021-03-11 14:35:36,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,372 INFO L87 Difference]: Start difference. First operand 387 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,456 INFO L93 Difference]: Finished difference Result 581 states and 1748 transitions. [2021-03-11 14:35:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,457 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:36,457 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:35:36,457 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:36,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:35:36,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 389. [2021-03-11 14:35:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:35:36,464 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:36,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,464 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:35:36,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:35:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:36,464 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,464 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-03-11 14:35:36,465 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1519363905, now seen corresponding path program 152 times [2021-03-11 14:35:36,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869808778] [2021-03-11 14:35:36,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:36,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:36,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:36,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:36,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:36,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:36,522 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:36,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:36,546 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:36,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869808778] [2021-03-11 14:35:36,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417284204] [2021-03-11 14:35:36,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,568 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,638 INFO L93 Difference]: Finished difference Result 579 states and 1743 transitions. [2021-03-11 14:35:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:36,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,639 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:35:36,639 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:35:36,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:35:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 388. [2021-03-11 14:35:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.509043927648579) internal successors, (1358), 387 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1358 transitions. [2021-03-11 14:35:36,645 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:36,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,646 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1358 transitions. [2021-03-11 14:35:36,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1358 transitions. [2021-03-11 14:35:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:36,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,646 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-03-11 14:35:36,646 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,646 INFO L82 PathProgramCache]: Analyzing trace with hash -823311413, now seen corresponding path program 153 times [2021-03-11 14:35:36,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728795238] [2021-03-11 14:35:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:36,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:36,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:36,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:36,686 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:36,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:36,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:36,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:36,737 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:36,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728795238] [2021-03-11 14:35:36,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368097985] [2021-03-11 14:35:36,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,759 INFO L87 Difference]: Start difference. First operand 388 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:36,833 INFO L93 Difference]: Finished difference Result 587 states and 1761 transitions. [2021-03-11 14:35:36,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:36,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:36,835 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:35:36,835 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:35:36,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:35:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 391. [2021-03-11 14:35:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.494871794871795) internal successors, (1363), 390 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1363 transitions. [2021-03-11 14:35:36,841 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:36,841 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1363 transitions. [2021-03-11 14:35:36,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1363 transitions. [2021-03-11 14:35:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:36,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:36,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:36,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-03-11 14:35:36,842 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:36,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:36,842 INFO L82 PathProgramCache]: Analyzing trace with hash 334013185, now seen corresponding path program 154 times [2021-03-11 14:35:36,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:36,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804748570] [2021-03-11 14:35:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:36,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:36,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:36,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:36,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:36,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:36,869 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:36,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:36,882 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:36,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:36,899 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:36,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:36,922 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:36,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:36,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804748570] [2021-03-11 14:35:36,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:36,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:36,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544777343] [2021-03-11 14:35:36,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:36,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:36,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:36,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:36,944 INFO L87 Difference]: Start difference. First operand 391 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,025 INFO L93 Difference]: Finished difference Result 589 states and 1762 transitions. [2021-03-11 14:35:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:37,025 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:37,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,026 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:35:37,026 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:35:37,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:35:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 388. [2021-03-11 14:35:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.5064599483204133) internal successors, (1357), 387 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1357 transitions. [2021-03-11 14:35:37,033 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,033 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1357 transitions. [2021-03-11 14:35:37,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,033 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1357 transitions. [2021-03-11 14:35:37,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:37,034 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,034 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-03-11 14:35:37,034 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2025710171, now seen corresponding path program 155 times [2021-03-11 14:35:37,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339587418] [2021-03-11 14:35:37,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:37,060 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:37,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:37,072 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:37,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:37,098 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:37,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:37,120 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:37,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:37,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339587418] [2021-03-11 14:35:37,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:37,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089389664] [2021-03-11 14:35:37,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:37,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:37,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,146 INFO L87 Difference]: Start difference. First operand 388 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,227 INFO L93 Difference]: Finished difference Result 581 states and 1746 transitions. [2021-03-11 14:35:37,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:37,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,229 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:37,229 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:35:37,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:35:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 389. [2021-03-11 14:35:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:35:37,236 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:37,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,236 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:35:37,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:35:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:37,236 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,236 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-03-11 14:35:37,236 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash -123086365, now seen corresponding path program 156 times [2021-03-11 14:35:37,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967117911] [2021-03-11 14:35:37,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:37,272 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:37,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:37,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:37,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:37,313 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:37,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:37,336 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:37,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967117911] [2021-03-11 14:35:37,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:37,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156416539] [2021-03-11 14:35:37,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:37,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:37,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,358 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,449 INFO L93 Difference]: Finished difference Result 585 states and 1753 transitions. [2021-03-11 14:35:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:37,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,450 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:37,450 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:35:37,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:35:37,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 387. [2021-03-11 14:35:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.510362694300518) internal successors, (1355), 386 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1355 transitions. [2021-03-11 14:35:37,456 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,456 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1355 transitions. [2021-03-11 14:35:37,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1355 transitions. [2021-03-11 14:35:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:37,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,457 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-03-11 14:35:37,457 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1988520945, now seen corresponding path program 157 times [2021-03-11 14:35:37,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311537824] [2021-03-11 14:35:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:37,495 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:37,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:37,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:37,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:37,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:37,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:37,550 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:37,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311537824] [2021-03-11 14:35:37,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:37,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536648660] [2021-03-11 14:35:37,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:37,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:37,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,576 INFO L87 Difference]: Start difference. First operand 387 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,660 INFO L93 Difference]: Finished difference Result 605 states and 1807 transitions. [2021-03-11 14:35:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,662 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:35:37,662 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:37,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:37,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 394. [2021-03-11 14:35:37,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.49618320610687) internal successors, (1374), 393 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1374 transitions. [2021-03-11 14:35:37,668 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,668 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1374 transitions. [2021-03-11 14:35:37,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1374 transitions. [2021-03-11 14:35:37,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:37,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,669 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-03-11 14:35:37,669 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1149121753, now seen corresponding path program 158 times [2021-03-11 14:35:37,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057405053] [2021-03-11 14:35:37,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:37,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:37,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:37,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:37,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:37,734 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:37,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:37,756 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:37,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057405053] [2021-03-11 14:35:37,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:37,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591274694] [2021-03-11 14:35:37,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:37,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:37,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,779 INFO L87 Difference]: Start difference. First operand 394 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:37,851 INFO L93 Difference]: Finished difference Result 607 states and 1808 transitions. [2021-03-11 14:35:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:37,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:37,853 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:35:37,853 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:35:37,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:35:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 391. [2021-03-11 14:35:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5025641025641026) internal successors, (1366), 390 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1366 transitions. [2021-03-11 14:35:37,860 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:37,860 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1366 transitions. [2021-03-11 14:35:37,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1366 transitions. [2021-03-11 14:35:37,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:37,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:37,860 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:37,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-03-11 14:35:37,860 INFO L428 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:37,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:37,861 INFO L82 PathProgramCache]: Analyzing trace with hash 388083091, now seen corresponding path program 159 times [2021-03-11 14:35:37,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:37,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870165959] [2021-03-11 14:35:37,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:37,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:37,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:37,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:37,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:37,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:37,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:37,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:37,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:37,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:37,928 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:37,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:37,951 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:37,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:37,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870165959] [2021-03-11 14:35:37,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:37,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:37,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877540518] [2021-03-11 14:35:37,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:37,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:37,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:37,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:37,973 INFO L87 Difference]: Start difference. First operand 391 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,061 INFO L93 Difference]: Finished difference Result 609 states and 1811 transitions. [2021-03-11 14:35:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:38,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,062 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:35:38,062 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:35:38,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:38,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:35:38,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 395. [2021-03-11 14:35:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.484771573604061) internal successors, (1373), 394 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1373 transitions. [2021-03-11 14:35:38,074 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,074 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1373 transitions. [2021-03-11 14:35:38,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,074 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1373 transitions. [2021-03-11 14:35:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:38,075 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,075 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-03-11 14:35:38,075 INFO L428 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,075 INFO L82 PathProgramCache]: Analyzing trace with hash 461390503, now seen corresponding path program 160 times [2021-03-11 14:35:38,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642070283] [2021-03-11 14:35:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,102 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:38,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:38,115 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:38,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:38,143 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:38,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:38,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642070283] [2021-03-11 14:35:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:38,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140614565] [2021-03-11 14:35:38,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:38,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:38,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,190 INFO L87 Difference]: Start difference. First operand 395 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,255 INFO L93 Difference]: Finished difference Result 614 states and 1817 transitions. [2021-03-11 14:35:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,257 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:35:38,257 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:38,257 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 117.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 391. [2021-03-11 14:35:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4923076923076923) internal successors, (1362), 390 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1362 transitions. [2021-03-11 14:35:38,263 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,264 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1362 transitions. [2021-03-11 14:35:38,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1362 transitions. [2021-03-11 14:35:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:38,264 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,264 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-03-11 14:35:38,264 INFO L428 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1123408019, now seen corresponding path program 161 times [2021-03-11 14:35:38,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270903308] [2021-03-11 14:35:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:38,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:38,305 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:38,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:38,323 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:38,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:38,346 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:38,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270903308] [2021-03-11 14:35:38,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:38,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083180598] [2021-03-11 14:35:38,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:38,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:38,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,369 INFO L87 Difference]: Start difference. First operand 391 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,460 INFO L93 Difference]: Finished difference Result 615 states and 1821 transitions. [2021-03-11 14:35:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,461 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:35:38,461 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:38,461 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:38,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 397. [2021-03-11 14:35:38,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.467171717171717) internal successors, (1373), 396 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1373 transitions. [2021-03-11 14:35:38,468 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,468 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1373 transitions. [2021-03-11 14:35:38,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1373 transitions. [2021-03-11 14:35:38,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:38,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,469 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-03-11 14:35:38,469 INFO L428 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1978714673, now seen corresponding path program 162 times [2021-03-11 14:35:38,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155957564] [2021-03-11 14:35:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:38,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:38,509 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:38,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:38,527 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:38,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:38,550 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:38,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155957564] [2021-03-11 14:35:38,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:38,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885489454] [2021-03-11 14:35:38,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:38,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:38,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,573 INFO L87 Difference]: Start difference. First operand 397 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,638 INFO L93 Difference]: Finished difference Result 618 states and 1821 transitions. [2021-03-11 14:35:38,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:38,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:38,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,639 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:38,639 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:35:38,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:35:38,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 387. [2021-03-11 14:35:38,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.505181347150259) internal successors, (1353), 386 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1353 transitions. [2021-03-11 14:35:38,646 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,646 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1353 transitions. [2021-03-11 14:35:38,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,646 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1353 transitions. [2021-03-11 14:35:38,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:38,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-03-11 14:35:38,647 INFO L428 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1826357985, now seen corresponding path program 163 times [2021-03-11 14:35:38,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111928539] [2021-03-11 14:35:38,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:38,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:38,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:38,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:38,723 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:38,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:38,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:38,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111928539] [2021-03-11 14:35:38,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:38,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285290438] [2021-03-11 14:35:38,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:38,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:38,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,769 INFO L87 Difference]: Start difference. First operand 387 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:38,824 INFO L93 Difference]: Finished difference Result 591 states and 1767 transitions. [2021-03-11 14:35:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:38,826 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:35:38,826 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:38,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 390. [2021-03-11 14:35:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4961439588688945) internal successors, (1360), 389 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1360 transitions. [2021-03-11 14:35:38,833 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:38,833 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1360 transitions. [2021-03-11 14:35:38,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1360 transitions. [2021-03-11 14:35:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:38,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:38,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:38,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-03-11 14:35:38,834 INFO L428 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:38,834 INFO L82 PathProgramCache]: Analyzing trace with hash 319812775, now seen corresponding path program 164 times [2021-03-11 14:35:38,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:38,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354480491] [2021-03-11 14:35:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:38,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:38,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:38,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:38,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:38,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:38,860 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:38,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:38,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:38,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:38,906 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:38,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:38,929 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:38,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:38,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:38,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354480491] [2021-03-11 14:35:38,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:38,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:38,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356974640] [2021-03-11 14:35:38,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:38,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:38,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:38,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:38,955 INFO L87 Difference]: Start difference. First operand 390 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,047 INFO L93 Difference]: Finished difference Result 595 states and 1774 transitions. [2021-03-11 14:35:39,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:39,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,048 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:35:39,048 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:35:39,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:35:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 389. [2021-03-11 14:35:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:35:39,055 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,055 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:35:39,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:35:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:39,055 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,055 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-03-11 14:35:39,056 INFO L428 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,056 INFO L82 PathProgramCache]: Analyzing trace with hash 868171457, now seen corresponding path program 165 times [2021-03-11 14:35:39,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132471367] [2021-03-11 14:35:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:39,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,114 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:39,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:39,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:39,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:39,163 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:39,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:39,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132471367] [2021-03-11 14:35:39,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:39,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831987755] [2021-03-11 14:35:39,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:39,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:39,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,185 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,244 INFO L93 Difference]: Finished difference Result 595 states and 1773 transitions. [2021-03-11 14:35:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:39,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,245 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:35:39,245 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:35:39,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:39,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:35:39,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 391. [2021-03-11 14:35:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.48974358974359) internal successors, (1361), 390 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1361 transitions. [2021-03-11 14:35:39,252 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,252 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1361 transitions. [2021-03-11 14:35:39,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1361 transitions. [2021-03-11 14:35:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:39,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-03-11 14:35:39,253 INFO L428 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,253 INFO L82 PathProgramCache]: Analyzing trace with hash 330315879, now seen corresponding path program 166 times [2021-03-11 14:35:39,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97757945] [2021-03-11 14:35:39,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:39,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,302 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:39,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:39,328 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:39,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:39,351 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:39,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97757945] [2021-03-11 14:35:39,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:39,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423507156] [2021-03-11 14:35:39,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:39,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:39,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,374 INFO L87 Difference]: Start difference. First operand 391 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,438 INFO L93 Difference]: Finished difference Result 602 states and 1785 transitions. [2021-03-11 14:35:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,440 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:35:39,440 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:39,440 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 389. [2021-03-11 14:35:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4948453608247423) internal successors, (1356), 388 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1356 transitions. [2021-03-11 14:35:39,446 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,446 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1356 transitions. [2021-03-11 14:35:39,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1356 transitions. [2021-03-11 14:35:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:39,447 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,447 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-03-11 14:35:39,447 INFO L428 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,447 INFO L82 PathProgramCache]: Analyzing trace with hash 826159041, now seen corresponding path program 167 times [2021-03-11 14:35:39,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37333585] [2021-03-11 14:35:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:39,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,514 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:39,537 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:39,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37333585] [2021-03-11 14:35:39,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367253520] [2021-03-11 14:35:39,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:39,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,559 INFO L87 Difference]: Start difference. First operand 389 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,650 INFO L93 Difference]: Finished difference Result 607 states and 1799 transitions. [2021-03-11 14:35:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:39,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,651 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:35:39,651 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:39,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 395. [2021-03-11 14:35:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.469543147208122) internal successors, (1367), 394 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1367 transitions. [2021-03-11 14:35:39,658 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,658 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1367 transitions. [2021-03-11 14:35:39,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1367 transitions. [2021-03-11 14:35:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:39,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-03-11 14:35:39,659 INFO L428 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1857867297, now seen corresponding path program 168 times [2021-03-11 14:35:39,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257122355] [2021-03-11 14:35:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:39,688 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:39,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:39,710 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,729 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:39,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:39,752 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:39,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257122355] [2021-03-11 14:35:39,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:39,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80935781] [2021-03-11 14:35:39,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,775 INFO L87 Difference]: Start difference. First operand 395 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:39,852 INFO L93 Difference]: Finished difference Result 610 states and 1799 transitions. [2021-03-11 14:35:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:39,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:39,853 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:35:39,853 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:39,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 385. [2021-03-11 14:35:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.5104166666666665) internal successors, (1348), 384 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1348 transitions. [2021-03-11 14:35:39,859 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1348 transitions. Word has length 22 [2021-03-11 14:35:39,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:39,860 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1348 transitions. [2021-03-11 14:35:39,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1348 transitions. [2021-03-11 14:35:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:39,860 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:39,860 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:39,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-03-11 14:35:39,860 INFO L428 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1196066703, now seen corresponding path program 169 times [2021-03-11 14:35:39,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:39,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252102235] [2021-03-11 14:35:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:39,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:39,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:39,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:39,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:39,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:39,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:39,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:39,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:39,903 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:39,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:39,921 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:39,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:39,943 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:39,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:39,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:39,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252102235] [2021-03-11 14:35:39,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:39,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:39,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396158526] [2021-03-11 14:35:39,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:39,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:39,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:39,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:39,966 INFO L87 Difference]: Start difference. First operand 385 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,065 INFO L93 Difference]: Finished difference Result 559 states and 1693 transitions. [2021-03-11 14:35:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:40,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,066 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:35:40,066 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:35:40,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:35:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 388. [2021-03-11 14:35:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.503875968992248) internal successors, (1356), 387 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1356 transitions. [2021-03-11 14:35:40,073 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,073 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1356 transitions. [2021-03-11 14:35:40,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1356 transitions. [2021-03-11 14:35:40,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:40,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-03-11 14:35:40,074 INFO L428 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1350558845, now seen corresponding path program 170 times [2021-03-11 14:35:40,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989202788] [2021-03-11 14:35:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,120 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,138 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:40,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:40,161 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:40,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989202788] [2021-03-11 14:35:40,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:40,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693736166] [2021-03-11 14:35:40,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:40,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:40,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,183 INFO L87 Difference]: Start difference. First operand 388 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,264 INFO L93 Difference]: Finished difference Result 557 states and 1688 transitions. [2021-03-11 14:35:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,265 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:35:40,265 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:35:40,265 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:40,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:35:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 387. [2021-03-11 14:35:40,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5077720207253886) internal successors, (1354), 386 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1354 transitions. [2021-03-11 14:35:40,272 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1354 transitions. Word has length 22 [2021-03-11 14:35:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,272 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1354 transitions. [2021-03-11 14:35:40,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1354 transitions. [2021-03-11 14:35:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:40,272 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,272 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-03-11 14:35:40,272 INFO L428 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -404371151, now seen corresponding path program 171 times [2021-03-11 14:35:40,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116173647] [2021-03-11 14:35:40,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,300 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,332 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:40,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:40,357 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:40,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116173647] [2021-03-11 14:35:40,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:40,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988082658] [2021-03-11 14:35:40,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:40,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,380 INFO L87 Difference]: Start difference. First operand 387 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,456 INFO L93 Difference]: Finished difference Result 561 states and 1697 transitions. [2021-03-11 14:35:40,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:40,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:40,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,458 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:35:40,458 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:35:40,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:35:40,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2021-03-11 14:35:40,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:35:40,464 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,464 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:35:40,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,464 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:35:40,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:40,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-03-11 14:35:40,465 INFO L428 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,465 INFO L82 PathProgramCache]: Analyzing trace with hash -906912703, now seen corresponding path program 172 times [2021-03-11 14:35:40,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519010936] [2021-03-11 14:35:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:40,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:40,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:40,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:40,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:40,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519010936] [2021-03-11 14:35:40,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:40,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540069215] [2021-03-11 14:35:40,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:40,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:40,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,572 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,645 INFO L93 Difference]: Finished difference Result 560 states and 1693 transitions. [2021-03-11 14:35:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:40,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,647 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:35:40,647 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:35:40,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:35:40,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 387. [2021-03-11 14:35:40,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.505181347150259) internal successors, (1353), 386 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1353 transitions. [2021-03-11 14:35:40,653 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,653 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1353 transitions. [2021-03-11 14:35:40,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1353 transitions. [2021-03-11 14:35:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:40,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-03-11 14:35:40,654 INFO L428 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1850316863, now seen corresponding path program 173 times [2021-03-11 14:35:40,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995032019] [2021-03-11 14:35:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,683 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,698 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:40,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:40,717 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:40,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:40,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:40,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995032019] [2021-03-11 14:35:40,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:40,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940964699] [2021-03-11 14:35:40,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:40,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:40,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,766 INFO L87 Difference]: Start difference. First operand 387 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:40,820 INFO L93 Difference]: Finished difference Result 556 states and 1685 transitions. [2021-03-11 14:35:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:40,821 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:35:40,821 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:35:40,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:35:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 388. [2021-03-11 14:35:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.498708010335917) internal successors, (1354), 387 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1354 transitions. [2021-03-11 14:35:40,828 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1354 transitions. Word has length 22 [2021-03-11 14:35:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:40,828 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1354 transitions. [2021-03-11 14:35:40,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1354 transitions. [2021-03-11 14:35:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:40,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:40,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:40,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-03-11 14:35:40,829 INFO L428 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:40,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:40,829 INFO L82 PathProgramCache]: Analyzing trace with hash -239375905, now seen corresponding path program 174 times [2021-03-11 14:35:40,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:40,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216628447] [2021-03-11 14:35:40,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:40,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:40,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:40,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:40,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:40,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:40,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:40,857 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:35:40,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:35:40,872 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:40,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:40,895 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:40,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:40,918 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:40,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216628447] [2021-03-11 14:35:40,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:40,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:40,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532329706] [2021-03-11 14:35:40,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:40,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:40,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:40,941 INFO L87 Difference]: Start difference. First operand 388 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,059 INFO L93 Difference]: Finished difference Result 557 states and 1686 transitions. [2021-03-11 14:35:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,061 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:35:41,061 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:35:41,061 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:35:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 386. [2021-03-11 14:35:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.5090909090909093) internal successors, (1351), 385 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1351 transitions. [2021-03-11 14:35:41,067 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1351 transitions. Word has length 22 [2021-03-11 14:35:41,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,067 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1351 transitions. [2021-03-11 14:35:41,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,067 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1351 transitions. [2021-03-11 14:35:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:41,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,068 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-03-11 14:35:41,068 INFO L428 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,068 INFO L82 PathProgramCache]: Analyzing trace with hash 155830905, now seen corresponding path program 175 times [2021-03-11 14:35:41,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963449103] [2021-03-11 14:35:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:41,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:41,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:41,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:41,154 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:41,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963449103] [2021-03-11 14:35:41,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:41,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168678639] [2021-03-11 14:35:41,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:41,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:41,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,176 INFO L87 Difference]: Start difference. First operand 386 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,255 INFO L93 Difference]: Finished difference Result 563 states and 1701 transitions. [2021-03-11 14:35:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,256 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:35:41,256 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:35:41,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:35:41,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 388. [2021-03-11 14:35:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.501291989664083) internal successors, (1355), 387 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1355 transitions. [2021-03-11 14:35:41,262 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,263 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1355 transitions. [2021-03-11 14:35:41,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1355 transitions. [2021-03-11 14:35:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:41,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-03-11 14:35:41,263 INFO L428 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,264 INFO L82 PathProgramCache]: Analyzing trace with hash 310323047, now seen corresponding path program 176 times [2021-03-11 14:35:41,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267448441] [2021-03-11 14:35:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,281 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:41,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:41,291 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,304 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:41,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:41,323 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:41,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:41,346 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:41,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267448441] [2021-03-11 14:35:41,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:41,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630330348] [2021-03-11 14:35:41,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:41,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:41,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,369 INFO L87 Difference]: Start difference. First operand 388 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,422 INFO L93 Difference]: Finished difference Result 561 states and 1696 transitions. [2021-03-11 14:35:41,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,423 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:35:41,424 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:35:41,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 109.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:35:41,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 387. [2021-03-11 14:35:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.505181347150259) internal successors, (1353), 386 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1353 transitions. [2021-03-11 14:35:41,430 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:41,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,430 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1353 transitions. [2021-03-11 14:35:41,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,430 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1353 transitions. [2021-03-11 14:35:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:41,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-03-11 14:35:41,431 INFO L428 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2032352271, now seen corresponding path program 177 times [2021-03-11 14:35:41,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031589200] [2021-03-11 14:35:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:41,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:41,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,472 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,489 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:41,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:41,512 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:41,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031589200] [2021-03-11 14:35:41,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:41,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872459640] [2021-03-11 14:35:41,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:41,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:41,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,534 INFO L87 Difference]: Start difference. First operand 387 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,616 INFO L93 Difference]: Finished difference Result 569 states and 1714 transitions. [2021-03-11 14:35:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,617 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:35:41,618 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:41,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:41,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 390. [2021-03-11 14:35:41,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4910025706940875) internal successors, (1358), 389 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1358 transitions. [2021-03-11 14:35:41,624 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:41,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,624 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1358 transitions. [2021-03-11 14:35:41,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,624 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1358 transitions. [2021-03-11 14:35:41,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:41,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-03-11 14:35:41,625 INFO L428 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,625 INFO L82 PathProgramCache]: Analyzing trace with hash -875027673, now seen corresponding path program 178 times [2021-03-11 14:35:41,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272922074] [2021-03-11 14:35:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:41,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:41,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:41,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:41,685 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:41,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:41,708 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:41,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272922074] [2021-03-11 14:35:41,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:41,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840975711] [2021-03-11 14:35:41,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:41,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:41,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,730 INFO L87 Difference]: Start difference. First operand 390 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,809 INFO L93 Difference]: Finished difference Result 571 states and 1715 transitions. [2021-03-11 14:35:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,810 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:35:41,810 INFO L226 Difference]: Without dead ends: 555 [2021-03-11 14:35:41,810 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-11 14:35:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 387. [2021-03-11 14:35:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5025906735751295) internal successors, (1352), 386 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1352 transitions. [2021-03-11 14:35:41,817 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1352 transitions. Word has length 22 [2021-03-11 14:35:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:41,817 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1352 transitions. [2021-03-11 14:35:41,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1352 transitions. [2021-03-11 14:35:41,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:41,817 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:41,818 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:41,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-03-11 14:35:41,818 INFO L428 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 816669313, now seen corresponding path program 179 times [2021-03-11 14:35:41,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:41,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288222201] [2021-03-11 14:35:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:41,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:41,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:41,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:41,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:41,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:41,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:41,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:41,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:41,862 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:41,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:41,892 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:41,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:41,919 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:41,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:41,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288222201] [2021-03-11 14:35:41,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:41,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:41,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115116100] [2021-03-11 14:35:41,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:41,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:41,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:41,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:41,940 INFO L87 Difference]: Start difference. First operand 387 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:41,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:41,994 INFO L93 Difference]: Finished difference Result 563 states and 1699 transitions. [2021-03-11 14:35:41,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:41,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:41,995 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:35:41,995 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:35:41,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:35:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 388. [2021-03-11 14:35:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.496124031007752) internal successors, (1353), 387 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1353 transitions. [2021-03-11 14:35:42,002 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,002 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1353 transitions. [2021-03-11 14:35:42,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1353 transitions. [2021-03-11 14:35:42,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,002 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,002 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,002 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-03-11 14:35:42,002 INFO L428 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1332127223, now seen corresponding path program 180 times [2021-03-11 14:35:42,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550335534] [2021-03-11 14:35:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:42,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:42,073 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:42,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:42,096 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:42,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550335534] [2021-03-11 14:35:42,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:42,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088841628] [2021-03-11 14:35:42,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,118 INFO L87 Difference]: Start difference. First operand 388 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,197 INFO L93 Difference]: Finished difference Result 567 states and 1706 transitions. [2021-03-11 14:35:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,199 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:35:42,199 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:35:42,199 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:35:42,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 386. [2021-03-11 14:35:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.5064935064935066) internal successors, (1350), 385 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1350 transitions. [2021-03-11 14:35:42,205 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1350 transitions. Word has length 22 [2021-03-11 14:35:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,205 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1350 transitions. [2021-03-11 14:35:42,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1350 transitions. [2021-03-11 14:35:42,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-03-11 14:35:42,206 INFO L428 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,206 INFO L82 PathProgramCache]: Analyzing trace with hash 481427129, now seen corresponding path program 181 times [2021-03-11 14:35:42,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240563511] [2021-03-11 14:35:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,248 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,266 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:42,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:42,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:42,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240563511] [2021-03-11 14:35:42,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:42,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076522036] [2021-03-11 14:35:42,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:42,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:42,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,312 INFO L87 Difference]: Start difference. First operand 386 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,390 INFO L93 Difference]: Finished difference Result 569 states and 1717 transitions. [2021-03-11 14:35:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,391 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:35:42,391 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:35:42,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:35:42,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 390. [2021-03-11 14:35:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4961439588688945) internal successors, (1360), 389 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1360 transitions. [2021-03-11 14:35:42,397 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,398 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1360 transitions. [2021-03-11 14:35:42,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,398 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1360 transitions. [2021-03-11 14:35:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,398 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-03-11 14:35:42,398 INFO L428 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash -21114423, now seen corresponding path program 182 times [2021-03-11 14:35:42,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150114720] [2021-03-11 14:35:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,439 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:42,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:42,458 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:42,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:42,481 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:42,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150114720] [2021-03-11 14:35:42,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:42,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10054927] [2021-03-11 14:35:42,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:42,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:42,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,504 INFO L87 Difference]: Start difference. First operand 390 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,582 INFO L93 Difference]: Finished difference Result 568 states and 1713 transitions. [2021-03-11 14:35:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:42,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:42,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,583 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:35:42,583 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:35:42,583 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:42,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:35:42,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 388. [2021-03-11 14:35:42,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.501291989664083) internal successors, (1355), 387 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1355 transitions. [2021-03-11 14:35:42,590 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:42,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,590 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1355 transitions. [2021-03-11 14:35:42,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,590 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1355 transitions. [2021-03-11 14:35:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-03-11 14:35:42,590 INFO L428 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,591 INFO L82 PathProgramCache]: Analyzing trace with hash -106318193, now seen corresponding path program 183 times [2021-03-11 14:35:42,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252444358] [2021-03-11 14:35:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:42,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:42,649 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:42,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:42,672 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:42,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252444358] [2021-03-11 14:35:42,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:42,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186673796] [2021-03-11 14:35:42,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:42,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:42,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,695 INFO L87 Difference]: Start difference. First operand 388 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,771 INFO L93 Difference]: Finished difference Result 573 states and 1724 transitions. [2021-03-11 14:35:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:42,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,773 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:35:42,773 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:35:42,773 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:35:42,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 391. [2021-03-11 14:35:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:35:42,779 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:42,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,779 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:35:42,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:35:42,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,780 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,780 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-03-11 14:35:42,780 INFO L428 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1051006405, now seen corresponding path program 184 times [2021-03-11 14:35:42,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458853496] [2021-03-11 14:35:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:42,807 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:42,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:42,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:42,838 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:42,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:42,861 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:42,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:42,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458853496] [2021-03-11 14:35:42,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:42,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:42,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617157189] [2021-03-11 14:35:42,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:42,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:42,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:42,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:42,884 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:42,963 INFO L93 Difference]: Finished difference Result 575 states and 1725 transitions. [2021-03-11 14:35:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:42,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:42,964 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:35:42,964 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:35:42,964 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:42,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:35:42,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 388. [2021-03-11 14:35:42,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.496124031007752) internal successors, (1353), 387 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1353 transitions. [2021-03-11 14:35:42,971 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:42,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:42,971 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1353 transitions. [2021-03-11 14:35:42,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:42,971 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1353 transitions. [2021-03-11 14:35:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:42,971 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:42,971 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:42,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-03-11 14:35:42,971 INFO L428 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:42,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1059419783, now seen corresponding path program 185 times [2021-03-11 14:35:42,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:42,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594842592] [2021-03-11 14:35:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:42,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:42,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:42,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:42,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:42,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:42,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:43,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:43,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:43,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:43,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:43,079 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:43,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594842592] [2021-03-11 14:35:43,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:43,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526872152] [2021-03-11 14:35:43,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:43,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:43,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,102 INFO L87 Difference]: Start difference. First operand 388 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,186 INFO L93 Difference]: Finished difference Result 570 states and 1715 transitions. [2021-03-11 14:35:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:43,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,188 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:35:43,188 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:35:43,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:43,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:35:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 390. [2021-03-11 14:35:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.48586118251928) internal successors, (1356), 389 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1356 transitions. [2021-03-11 14:35:43,200 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:43,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,200 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1356 transitions. [2021-03-11 14:35:43,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1356 transitions. [2021-03-11 14:35:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:43,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-03-11 14:35:43,202 INFO L428 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1630874589, now seen corresponding path program 186 times [2021-03-11 14:35:43,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801598462] [2021-03-11 14:35:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,229 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,239 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:43,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:43,252 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:43,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:43,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:43,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:43,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:43,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801598462] [2021-03-11 14:35:43,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:43,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392963224] [2021-03-11 14:35:43,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:43,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:43,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,330 INFO L87 Difference]: Start difference. First operand 390 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,402 INFO L93 Difference]: Finished difference Result 573 states and 1719 transitions. [2021-03-11 14:35:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:43,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:43,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,404 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:35:43,404 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:35:43,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:35:43,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 386. [2021-03-11 14:35:43,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.503896103896104) internal successors, (1349), 385 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1349 transitions. [2021-03-11 14:35:43,410 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1349 transitions. Word has length 22 [2021-03-11 14:35:43,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,410 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1349 transitions. [2021-03-11 14:35:43,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1349 transitions. [2021-03-11 14:35:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:43,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-03-11 14:35:43,411 INFO L428 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,411 INFO L82 PathProgramCache]: Analyzing trace with hash 961515495, now seen corresponding path program 187 times [2021-03-11 14:35:43,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035832554] [2021-03-11 14:35:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:43,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:43,463 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:43,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:43,482 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:43,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:43,509 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:43,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035832554] [2021-03-11 14:35:43,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:43,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956509618] [2021-03-11 14:35:43,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:43,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:43,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,531 INFO L87 Difference]: Start difference. First operand 386 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,592 INFO L93 Difference]: Finished difference Result 558 states and 1688 transitions. [2021-03-11 14:35:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:43,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,593 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:35:43,593 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:35:43,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:35:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 388. [2021-03-11 14:35:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.496124031007752) internal successors, (1353), 387 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1353 transitions. [2021-03-11 14:35:43,599 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,599 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1353 transitions. [2021-03-11 14:35:43,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1353 transitions. [2021-03-11 14:35:43,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:43,600 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,600 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-03-11 14:35:43,600 INFO L428 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1722510843, now seen corresponding path program 188 times [2021-03-11 14:35:43,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966767163] [2021-03-11 14:35:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,617 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,627 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:43,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:43,652 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:43,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:43,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:43,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:43,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:43,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966767163] [2021-03-11 14:35:43,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:43,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613861858] [2021-03-11 14:35:43,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:43,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:43,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,717 INFO L87 Difference]: Start difference. First operand 388 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,794 INFO L93 Difference]: Finished difference Result 559 states and 1689 transitions. [2021-03-11 14:35:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,796 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:35:43,796 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:35:43,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:35:43,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 387. [2021-03-11 14:35:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5) internal successors, (1351), 386 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1351 transitions. [2021-03-11 14:35:43,802 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1351 transitions. Word has length 22 [2021-03-11 14:35:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,802 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1351 transitions. [2021-03-11 14:35:43,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1351 transitions. [2021-03-11 14:35:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:43,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-03-11 14:35:43,803 INFO L428 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash 373770173, now seen corresponding path program 189 times [2021-03-11 14:35:43,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222675070] [2021-03-11 14:35:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:43,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:43,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:43,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:43,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:43,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:43,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:43,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:43,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:43,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:43,884 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:43,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:43,908 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:43,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:43,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222675070] [2021-03-11 14:35:43,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:43,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:43,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569582879] [2021-03-11 14:35:43,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:43,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:43,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:43,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:43,930 INFO L87 Difference]: Start difference. First operand 387 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:43,988 INFO L93 Difference]: Finished difference Result 561 states and 1693 transitions. [2021-03-11 14:35:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:43,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:43,990 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:35:43,990 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:35:43,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:35:43,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 388. [2021-03-11 14:35:43,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4935400516795867) internal successors, (1352), 387 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1352 transitions. [2021-03-11 14:35:43,996 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1352 transitions. Word has length 22 [2021-03-11 14:35:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:43,996 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1352 transitions. [2021-03-11 14:35:43,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1352 transitions. [2021-03-11 14:35:43,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:43,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:43,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:43,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-03-11 14:35:43,997 INFO L428 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:43,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1775026363, now seen corresponding path program 190 times [2021-03-11 14:35:43,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:43,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913456831] [2021-03-11 14:35:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,025 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:44,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:44,049 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:44,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:44,078 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:44,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:44,108 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:44,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913456831] [2021-03-11 14:35:44,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:44,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804112761] [2021-03-11 14:35:44,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:44,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,132 INFO L87 Difference]: Start difference. First operand 388 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,202 INFO L93 Difference]: Finished difference Result 565 states and 1700 transitions. [2021-03-11 14:35:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:44,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,203 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:35:44,203 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:35:44,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:35:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 387. [2021-03-11 14:35:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4974093264248705) internal successors, (1350), 386 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1350 transitions. [2021-03-11 14:35:44,212 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1350 transitions. Word has length 22 [2021-03-11 14:35:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,212 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1350 transitions. [2021-03-11 14:35:44,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1350 transitions. [2021-03-11 14:35:44,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:44,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-03-11 14:35:44,213 INFO L428 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,213 INFO L82 PathProgramCache]: Analyzing trace with hash 384273277, now seen corresponding path program 191 times [2021-03-11 14:35:44,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411489560] [2021-03-11 14:35:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:44,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:44,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:44,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,295 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:44,318 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:44,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411489560] [2021-03-11 14:35:44,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:44,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516704933] [2021-03-11 14:35:44,340 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:44,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:44,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,341 INFO L87 Difference]: Start difference. First operand 387 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,410 INFO L93 Difference]: Finished difference Result 564 states and 1699 transitions. [2021-03-11 14:35:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:44,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,411 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:35:44,411 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:35:44,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:35:44,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 389. [2021-03-11 14:35:44,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4871134020618557) internal successors, (1353), 388 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1353 transitions. [2021-03-11 14:35:44,418 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,418 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1353 transitions. [2021-03-11 14:35:44,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1353 transitions. [2021-03-11 14:35:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:44,418 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,418 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-03-11 14:35:44,419 INFO L428 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash 919503079, now seen corresponding path program 192 times [2021-03-11 14:35:44,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463988004] [2021-03-11 14:35:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:35:44,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:35:44,447 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:44,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:44,471 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:44,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:44,502 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:44,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:44,524 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:44,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463988004] [2021-03-11 14:35:44,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:44,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106439795] [2021-03-11 14:35:44,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:44,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:44,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,546 INFO L87 Difference]: Start difference. First operand 389 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,622 INFO L93 Difference]: Finished difference Result 567 states and 1703 transitions. [2021-03-11 14:35:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:44,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,623 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:35:44,623 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:35:44,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:35:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 385. [2021-03-11 14:35:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.5078125) internal successors, (1347), 384 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1347 transitions. [2021-03-11 14:35:44,630 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1347 transitions. Word has length 22 [2021-03-11 14:35:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,630 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1347 transitions. [2021-03-11 14:35:44,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,630 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1347 transitions. [2021-03-11 14:35:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:44,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-03-11 14:35:44,630 INFO L428 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1748884307, now seen corresponding path program 193 times [2021-03-11 14:35:44,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222567377] [2021-03-11 14:35:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:44,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:44,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:44,672 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:44,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:44,715 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:44,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222567377] [2021-03-11 14:35:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:44,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137249744] [2021-03-11 14:35:44,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:44,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:44,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,739 INFO L87 Difference]: Start difference. First operand 385 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,813 INFO L93 Difference]: Finished difference Result 595 states and 1792 transitions. [2021-03-11 14:35:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:44,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,814 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:35:44,814 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:44,815 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 392. [2021-03-11 14:35:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:35:44,821 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:44,821 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:35:44,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,821 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:35:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:44,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:44,822 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:44,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-03-11 14:35:44,822 INFO L428 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:44,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:44,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1246342755, now seen corresponding path program 194 times [2021-03-11 14:35:44,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:44,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67078545] [2021-03-11 14:35:44,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:44,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:44,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:44,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:44,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:44,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:44,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:44,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:44,863 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:44,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:44,882 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:44,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:44,905 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:44,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:44,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67078545] [2021-03-11 14:35:44,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:44,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:44,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465157586] [2021-03-11 14:35:44,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:44,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:44,928 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:44,997 INFO L93 Difference]: Finished difference Result 594 states and 1788 transitions. [2021-03-11 14:35:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:44,999 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:44,999 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:44,999 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:45,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 390. [2021-03-11 14:35:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:35:45,005 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,005 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:35:45,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:35:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:45,006 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,006 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-03-11 14:35:45,006 INFO L428 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1161138985, now seen corresponding path program 195 times [2021-03-11 14:35:45,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44431778] [2021-03-11 14:35:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:45,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,046 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:45,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:45,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:45,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:45,088 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:45,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44431778] [2021-03-11 14:35:45,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:45,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064883119] [2021-03-11 14:35:45,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:45,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:45,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,111 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,187 INFO L93 Difference]: Finished difference Result 599 states and 1799 transitions. [2021-03-11 14:35:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:45,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:45,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,188 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:35:45,188 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:35:45,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:35:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 393. [2021-03-11 14:35:45,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4948979591836733) internal successors, (1370), 392 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1370 transitions. [2021-03-11 14:35:45,195 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:45,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,195 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1370 transitions. [2021-03-11 14:35:45,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1370 transitions. [2021-03-11 14:35:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:45,196 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,196 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-03-11 14:35:45,196 INFO L428 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1976503713, now seen corresponding path program 196 times [2021-03-11 14:35:45,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781866757] [2021-03-11 14:35:45,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:45,232 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,244 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:45,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:45,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:45,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:45,283 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:45,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781866757] [2021-03-11 14:35:45,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132101050] [2021-03-11 14:35:45,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:45,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:45,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,306 INFO L87 Difference]: Start difference. First operand 393 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,380 INFO L93 Difference]: Finished difference Result 601 states and 1800 transitions. [2021-03-11 14:35:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:45,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:45,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,381 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:35:45,381 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:35:45,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:35:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 390. [2021-03-11 14:35:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5038560411311055) internal successors, (1363), 389 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1363 transitions. [2021-03-11 14:35:45,388 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,388 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1363 transitions. [2021-03-11 14:35:45,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1363 transitions. [2021-03-11 14:35:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:45,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,389 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-03-11 14:35:45,389 INFO L428 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1968090335, now seen corresponding path program 197 times [2021-03-11 14:35:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608714414] [2021-03-11 14:35:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:45,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:45,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,454 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:45,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:45,478 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:45,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608714414] [2021-03-11 14:35:45,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:45,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882320744] [2021-03-11 14:35:45,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:45,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:45,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,501 INFO L87 Difference]: Start difference. First operand 390 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,570 INFO L93 Difference]: Finished difference Result 596 states and 1790 transitions. [2021-03-11 14:35:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,571 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:35:45,571 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:35:45,571 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:35:45,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 392. [2021-03-11 14:35:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.493606138107417) internal successors, (1366), 391 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1366 transitions. [2021-03-11 14:35:45,577 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:45,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,577 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1366 transitions. [2021-03-11 14:35:45,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1366 transitions. [2021-03-11 14:35:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:45,578 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,578 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-03-11 14:35:45,578 INFO L428 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1396635529, now seen corresponding path program 198 times [2021-03-11 14:35:45,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430484522] [2021-03-11 14:35:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:45,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:45,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:45,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:45,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:45,656 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:45,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:45,678 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:45,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430484522] [2021-03-11 14:35:45,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:45,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629596003] [2021-03-11 14:35:45,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:45,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:45,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,701 INFO L87 Difference]: Start difference. First operand 392 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,772 INFO L93 Difference]: Finished difference Result 599 states and 1794 transitions. [2021-03-11 14:35:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:45,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:45,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,773 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:35:45,773 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:45,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 388. [2021-03-11 14:35:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.509043927648579) internal successors, (1358), 387 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1358 transitions. [2021-03-11 14:35:45,780 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:45,780 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1358 transitions. [2021-03-11 14:35:45,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1358 transitions. [2021-03-11 14:35:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:45,780 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:45,780 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:45,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-03-11 14:35:45,781 INFO L428 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:45,781 INFO L82 PathProgramCache]: Analyzing trace with hash -620048911, now seen corresponding path program 199 times [2021-03-11 14:35:45,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:45,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777387900] [2021-03-11 14:35:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:45,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:45,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:45,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:45,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:45,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:45,807 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:45,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:45,828 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:45,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:45,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:45,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:45,884 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:45,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:45,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777387900] [2021-03-11 14:35:45,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:45,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:45,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276546549] [2021-03-11 14:35:45,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:45,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:45,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:45,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:45,908 INFO L87 Difference]: Start difference. First operand 388 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:45,995 INFO L93 Difference]: Finished difference Result 601 states and 1802 transitions. [2021-03-11 14:35:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:45,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:45,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:45,996 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:35:45,996 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:45,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 393. [2021-03-11 14:35:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.497448979591837) internal successors, (1371), 392 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1371 transitions. [2021-03-11 14:35:46,003 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1371 transitions. Word has length 22 [2021-03-11 14:35:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,003 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1371 transitions. [2021-03-11 14:35:46,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1371 transitions. [2021-03-11 14:35:46,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:46,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-03-11 14:35:46,004 INFO L428 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1122590463, now seen corresponding path program 200 times [2021-03-11 14:35:46,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327143793] [2021-03-11 14:35:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:46,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,051 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:46,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:46,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:46,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:46,093 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:46,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327143793] [2021-03-11 14:35:46,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:46,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840655683] [2021-03-11 14:35:46,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:46,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,116 INFO L87 Difference]: Start difference. First operand 393 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,188 INFO L93 Difference]: Finished difference Result 600 states and 1798 transitions. [2021-03-11 14:35:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:46,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,189 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:35:46,189 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:35:46,190 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:46,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:35:46,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 391. [2021-03-11 14:35:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5025641025641026) internal successors, (1366), 390 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1366 transitions. [2021-03-11 14:35:46,196 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,196 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1366 transitions. [2021-03-11 14:35:46,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,196 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1366 transitions. [2021-03-11 14:35:46,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:46,197 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,197 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-03-11 14:35:46,197 INFO L428 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1486735209, now seen corresponding path program 201 times [2021-03-11 14:35:46,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505843094] [2021-03-11 14:35:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:46,229 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:46,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:46,292 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:46,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:46,315 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:46,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:46,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505843094] [2021-03-11 14:35:46,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:46,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568830108] [2021-03-11 14:35:46,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:46,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:46,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,338 INFO L87 Difference]: Start difference. First operand 391 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,408 INFO L93 Difference]: Finished difference Result 609 states and 1816 transitions. [2021-03-11 14:35:46,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:46,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,409 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:35:46,409 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:35:46,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:46,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:35:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 395. [2021-03-11 14:35:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.484771573604061) internal successors, (1373), 394 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1373 transitions. [2021-03-11 14:35:46,417 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,417 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1373 transitions. [2021-03-11 14:35:46,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1373 transitions. [2021-03-11 14:35:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:46,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,418 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-03-11 14:35:46,418 INFO L428 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1560042621, now seen corresponding path program 202 times [2021-03-11 14:35:46,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829262531] [2021-03-11 14:35:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:46,444 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,465 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:46,493 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:46,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:46,516 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:46,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829262531] [2021-03-11 14:35:46,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:46,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164083721] [2021-03-11 14:35:46,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:46,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:46,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,539 INFO L87 Difference]: Start difference. First operand 395 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,592 INFO L93 Difference]: Finished difference Result 614 states and 1822 transitions. [2021-03-11 14:35:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,594 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:35:46,594 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:46,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 391. [2021-03-11 14:35:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.494871794871795) internal successors, (1363), 390 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1363 transitions. [2021-03-11 14:35:46,600 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1363 transitions. Word has length 22 [2021-03-11 14:35:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,600 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1363 transitions. [2021-03-11 14:35:46,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1363 transitions. [2021-03-11 14:35:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:46,601 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,601 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-03-11 14:35:46,601 INFO L428 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,601 INFO L82 PathProgramCache]: Analyzing trace with hash -31553153, now seen corresponding path program 203 times [2021-03-11 14:35:46,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693573010] [2021-03-11 14:35:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:46,628 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,649 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:46,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:46,676 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:46,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:46,699 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:46,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693573010] [2021-03-11 14:35:46,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:46,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49129214] [2021-03-11 14:35:46,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:46,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:46,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,722 INFO L87 Difference]: Start difference. First operand 391 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:46,804 INFO L93 Difference]: Finished difference Result 606 states and 1806 transitions. [2021-03-11 14:35:46,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:46,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:46,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:46,806 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:35:46,806 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:35:46,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:35:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 394. [2021-03-11 14:35:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.480916030534351) internal successors, (1368), 393 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1368 transitions. [2021-03-11 14:35:46,813 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:46,813 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1368 transitions. [2021-03-11 14:35:46,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1368 transitions. [2021-03-11 14:35:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:46,813 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:46,813 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:46,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-03-11 14:35:46,814 INFO L428 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:46,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1284604151, now seen corresponding path program 204 times [2021-03-11 14:35:46,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:46,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323462087] [2021-03-11 14:35:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:46,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:46,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:46,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:46,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:46,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:46,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:46,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:46,865 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:46,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:46,894 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:46,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:46,918 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:46,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:46,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323462087] [2021-03-11 14:35:46,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:46,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:46,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880439987] [2021-03-11 14:35:46,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:46,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:46,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:46,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:46,941 INFO L87 Difference]: Start difference. First operand 394 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,000 INFO L93 Difference]: Finished difference Result 612 states and 1815 transitions. [2021-03-11 14:35:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,000 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,001 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:35:47,001 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:47,001 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 388. [2021-03-11 14:35:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.501291989664083) internal successors, (1355), 387 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1355 transitions. [2021-03-11 14:35:47,009 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:47,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,009 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1355 transitions. [2021-03-11 14:35:47,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1355 transitions. [2021-03-11 14:35:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,009 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,009 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-03-11 14:35:47,010 INFO L428 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2046937265, now seen corresponding path program 205 times [2021-03-11 14:35:47,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392596807] [2021-03-11 14:35:47,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:47,045 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:47,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:47,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:47,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:47,079 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:47,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:47,105 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:47,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392596807] [2021-03-11 14:35:47,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:47,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745052095] [2021-03-11 14:35:47,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:47,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:47,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,128 INFO L87 Difference]: Start difference. First operand 388 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,204 INFO L93 Difference]: Finished difference Result 613 states and 1830 transitions. [2021-03-11 14:35:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,205 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:35:47,205 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:47,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 395. [2021-03-11 14:35:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.487309644670051) internal successors, (1374), 394 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1374 transitions. [2021-03-11 14:35:47,212 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:47,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,219 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1374 transitions. [2021-03-11 14:35:47,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,219 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1374 transitions. [2021-03-11 14:35:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,220 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,220 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-03-11 14:35:47,220 INFO L428 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1090705433, now seen corresponding path program 206 times [2021-03-11 14:35:47,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559478102] [2021-03-11 14:35:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:47,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:47,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:47,259 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:47,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:47,283 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:47,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:47,313 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:47,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559478102] [2021-03-11 14:35:47,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:47,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030644660] [2021-03-11 14:35:47,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:47,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:47,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,335 INFO L87 Difference]: Start difference. First operand 395 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,407 INFO L93 Difference]: Finished difference Result 615 states and 1831 transitions. [2021-03-11 14:35:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,408 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:35:47,408 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:35:47,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:35:47,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 392. [2021-03-11 14:35:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.493606138107417) internal successors, (1366), 391 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1366 transitions. [2021-03-11 14:35:47,415 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:47,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,415 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1366 transitions. [2021-03-11 14:35:47,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,415 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1366 transitions. [2021-03-11 14:35:47,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,416 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,416 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-03-11 14:35:47,416 INFO L428 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash 446499411, now seen corresponding path program 207 times [2021-03-11 14:35:47,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393077106] [2021-03-11 14:35:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:47,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:47,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:47,456 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:47,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:47,484 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:47,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:47,507 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:47,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393077106] [2021-03-11 14:35:47,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:47,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026642881] [2021-03-11 14:35:47,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:47,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,530 INFO L87 Difference]: Start difference. First operand 392 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,607 INFO L93 Difference]: Finished difference Result 617 states and 1834 transitions. [2021-03-11 14:35:47,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,608 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:35:47,608 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:47,608 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 396. [2021-03-11 14:35:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4759493670886075) internal successors, (1373), 395 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1373 transitions. [2021-03-11 14:35:47,615 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:47,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,615 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1373 transitions. [2021-03-11 14:35:47,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1373 transitions. [2021-03-11 14:35:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,616 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,616 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-03-11 14:35:47,616 INFO L428 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,616 INFO L82 PathProgramCache]: Analyzing trace with hash 519806823, now seen corresponding path program 208 times [2021-03-11 14:35:47,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261049885] [2021-03-11 14:35:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:47,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:47,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:47,656 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:47,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:47,684 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:47,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:47,708 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:47,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261049885] [2021-03-11 14:35:47,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:47,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903040368] [2021-03-11 14:35:47,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:47,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:47,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,731 INFO L87 Difference]: Start difference. First operand 396 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,794 INFO L93 Difference]: Finished difference Result 622 states and 1840 transitions. [2021-03-11 14:35:47,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,796 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:35:47,796 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:35:47,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:35:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 392. [2021-03-11 14:35:47,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.483375959079284) internal successors, (1362), 391 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1362 transitions. [2021-03-11 14:35:47,802 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,802 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1362 transitions. [2021-03-11 14:35:47,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1362 transitions. [2021-03-11 14:35:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-03-11 14:35:47,803 INFO L428 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1181824339, now seen corresponding path program 209 times [2021-03-11 14:35:47,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949572636] [2021-03-11 14:35:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:47,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:47,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:47,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:47,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:47,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:47,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:47,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:47,885 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:47,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:47,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:47,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949572636] [2021-03-11 14:35:47,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:47,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:47,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840931644] [2021-03-11 14:35:47,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:47,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:47,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:47,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:47,907 INFO L87 Difference]: Start difference. First operand 392 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:47,976 INFO L93 Difference]: Finished difference Result 623 states and 1844 transitions. [2021-03-11 14:35:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:47,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:47,977 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:35:47,977 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:35:47,977 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:35:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 398. [2021-03-11 14:35:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4584382871536525) internal successors, (1373), 397 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1373 transitions. [2021-03-11 14:35:47,984 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:47,984 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1373 transitions. [2021-03-11 14:35:47,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1373 transitions. [2021-03-11 14:35:47,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:47,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:47,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:47,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-03-11 14:35:47,985 INFO L428 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:47,985 INFO L82 PathProgramCache]: Analyzing trace with hash 2037130993, now seen corresponding path program 210 times [2021-03-11 14:35:47,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:47,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953180405] [2021-03-11 14:35:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:47,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:47,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:47,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:47,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:48,011 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:48,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:48,025 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:48,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:48,044 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:48,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:48,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:48,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953180405] [2021-03-11 14:35:48,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:48,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768338793] [2021-03-11 14:35:48,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:48,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,093 INFO L87 Difference]: Start difference. First operand 398 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,149 INFO L93 Difference]: Finished difference Result 626 states and 1844 transitions. [2021-03-11 14:35:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,151 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:35:48,151 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:35:48,151 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 110.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:48,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:35:48,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 388. [2021-03-11 14:35:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4935400516795867) internal successors, (1352), 387 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1352 transitions. [2021-03-11 14:35:48,157 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1352 transitions. Word has length 22 [2021-03-11 14:35:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,157 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1352 transitions. [2021-03-11 14:35:48,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1352 transitions. [2021-03-11 14:35:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:48,158 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,158 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-03-11 14:35:48,158 INFO L428 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1789295203, now seen corresponding path program 211 times [2021-03-11 14:35:48,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30815820] [2021-03-11 14:35:48,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:48,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:48,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:48,208 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:48,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,239 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:48,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:48,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:48,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30815820] [2021-03-11 14:35:48,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:48,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33715680] [2021-03-11 14:35:48,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:48,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:48,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,288 INFO L87 Difference]: Start difference. First operand 388 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,366 INFO L93 Difference]: Finished difference Result 606 states and 1808 transitions. [2021-03-11 14:35:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:48,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,367 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:35:48,367 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:35:48,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:35:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 393. [2021-03-11 14:35:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.482142857142857) internal successors, (1365), 392 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1365 transitions. [2021-03-11 14:35:48,373 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,374 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1365 transitions. [2021-03-11 14:35:48,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1365 transitions. [2021-03-11 14:35:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:48,374 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,374 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-03-11 14:35:48,374 INFO L428 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1934217287, now seen corresponding path program 212 times [2021-03-11 14:35:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234522095] [2021-03-11 14:35:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:48,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:48,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:48,424 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:48,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:48,455 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:48,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:48,478 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:48,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234522095] [2021-03-11 14:35:48,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:48,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070409137] [2021-03-11 14:35:48,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:48,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:48,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,500 INFO L87 Difference]: Start difference. First operand 393 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,571 INFO L93 Difference]: Finished difference Result 609 states and 1812 transitions. [2021-03-11 14:35:48,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,572 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:35:48,572 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:48,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:48,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 391. [2021-03-11 14:35:48,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:35:48,579 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,579 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:35:48,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:35:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:48,579 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,579 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-03-11 14:35:48,579 INFO L428 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,580 INFO L82 PathProgramCache]: Analyzing trace with hash -894731135, now seen corresponding path program 213 times [2021-03-11 14:35:48,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526959115] [2021-03-11 14:35:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:48,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:48,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:48,631 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:48,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:48,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:48,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:48,681 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:48,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526959115] [2021-03-11 14:35:48,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:48,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380474094] [2021-03-11 14:35:48,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:48,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:48,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,703 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,772 INFO L93 Difference]: Finished difference Result 610 states and 1813 transitions. [2021-03-11 14:35:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:48,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,774 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:35:48,774 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:35:48,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:48,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:35:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 394. [2021-03-11 14:35:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4732824427480917) internal successors, (1365), 393 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1365 transitions. [2021-03-11 14:35:48,780 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,780 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1365 transitions. [2021-03-11 14:35:48,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1365 transitions. [2021-03-11 14:35:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:48,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-03-11 14:35:48,781 INFO L428 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,781 INFO L82 PathProgramCache]: Analyzing trace with hash 421426169, now seen corresponding path program 214 times [2021-03-11 14:35:48,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424082796] [2021-03-11 14:35:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:48,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:48,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:48,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:48,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:48,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:48,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:48,886 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:48,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:48,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424082796] [2021-03-11 14:35:48,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:48,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:48,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416413715] [2021-03-11 14:35:48,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:48,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:48,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:48,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:48,909 INFO L87 Difference]: Start difference. First operand 394 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:48,965 INFO L93 Difference]: Finished difference Result 616 states and 1822 transitions. [2021-03-11 14:35:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:48,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:48,966 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:35:48,967 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:35:48,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:35:48,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 391. [2021-03-11 14:35:48,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4794871794871796) internal successors, (1357), 390 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1357 transitions. [2021-03-11 14:35:48,973 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:48,973 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1357 transitions. [2021-03-11 14:35:48,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:48,974 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1357 transitions. [2021-03-11 14:35:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:48,974 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:48,974 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:48,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-03-11 14:35:48,974 INFO L428 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:48,974 INFO L82 PathProgramCache]: Analyzing trace with hash 211953473, now seen corresponding path program 215 times [2021-03-11 14:35:48,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:48,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551253942] [2021-03-11 14:35:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:48,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:48,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:48,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:49,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:49,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:49,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:49,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:49,071 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:49,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:49,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551253942] [2021-03-11 14:35:49,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:49,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861230163] [2021-03-11 14:35:49,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:49,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:49,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,094 INFO L87 Difference]: Start difference. First operand 391 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,164 INFO L93 Difference]: Finished difference Result 619 states and 1831 transitions. [2021-03-11 14:35:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:49,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,165 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:35:49,165 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:49,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:49,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 397. [2021-03-11 14:35:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.4545454545454546) internal successors, (1368), 396 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1368 transitions. [2021-03-11 14:35:49,172 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,172 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1368 transitions. [2021-03-11 14:35:49,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1368 transitions. [2021-03-11 14:35:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:49,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-03-11 14:35:49,172 INFO L428 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,173 INFO L82 PathProgramCache]: Analyzing trace with hash 956655971, now seen corresponding path program 216 times [2021-03-11 14:35:49,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481171640] [2021-03-11 14:35:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:49,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:49,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:49,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:49,223 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:49,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:49,242 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:49,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:49,266 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:49,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:49,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481171640] [2021-03-11 14:35:49,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:49,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894429806] [2021-03-11 14:35:49,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:49,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:49,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,295 INFO L87 Difference]: Start difference. First operand 397 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,351 INFO L93 Difference]: Finished difference Result 622 states and 1831 transitions. [2021-03-11 14:35:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:49,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,352 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:35:49,352 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:49,353 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:49,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 385. [2021-03-11 14:35:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.5026041666666665) internal successors, (1345), 384 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1345 transitions. [2021-03-11 14:35:49,359 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1345 transitions. Word has length 22 [2021-03-11 14:35:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,359 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1345 transitions. [2021-03-11 14:35:49,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1345 transitions. [2021-03-11 14:35:49,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:49,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-03-11 14:35:49,360 INFO L428 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1806486947, now seen corresponding path program 217 times [2021-03-11 14:35:49,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874070673] [2021-03-11 14:35:49,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:49,377 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:49,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:49,395 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:49,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:49,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:49,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:49,438 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:49,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:49,462 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:49,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874070673] [2021-03-11 14:35:49,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:49,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142735382] [2021-03-11 14:35:49,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:49,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,484 INFO L87 Difference]: Start difference. First operand 385 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,539 INFO L93 Difference]: Finished difference Result 572 states and 1722 transitions. [2021-03-11 14:35:49,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:49,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:49,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,541 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:35:49,541 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:35:49,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:35:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 389. [2021-03-11 14:35:49,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:35:49,547 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,547 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:35:49,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:35:49,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:49,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-03-11 14:35:49,548 INFO L428 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,548 INFO L82 PathProgramCache]: Analyzing trace with hash -877539391, now seen corresponding path program 218 times [2021-03-11 14:35:49,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185126364] [2021-03-11 14:35:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:49,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:49,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:49,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:49,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:49,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:49,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:49,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:49,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:49,651 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:49,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185126364] [2021-03-11 14:35:49,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062030703] [2021-03-11 14:35:49,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:49,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:49,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,674 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,744 INFO L93 Difference]: Finished difference Result 573 states and 1723 transitions. [2021-03-11 14:35:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:49,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:49,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,745 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:35:49,746 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:35:49,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:49,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:35:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 388. [2021-03-11 14:35:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.501291989664083) internal successors, (1355), 387 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1355 transitions. [2021-03-11 14:35:49,752 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:49,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,752 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1355 transitions. [2021-03-11 14:35:49,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,752 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1355 transitions. [2021-03-11 14:35:49,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:49,753 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,753 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-03-11 14:35:49,753 INFO L428 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1218741625, now seen corresponding path program 219 times [2021-03-11 14:35:49,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578371948] [2021-03-11 14:35:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:49,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:49,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:49,792 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:49,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:49,816 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:49,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:49,844 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:49,868 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:49,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:49,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578371948] [2021-03-11 14:35:49,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:49,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:49,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458362169] [2021-03-11 14:35:49,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:49,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:49,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:49,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:49,891 INFO L87 Difference]: Start difference. First operand 388 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:49,950 INFO L93 Difference]: Finished difference Result 575 states and 1727 transitions. [2021-03-11 14:35:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:49,951 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:35:49,951 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:35:49,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:35:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 389. [2021-03-11 14:35:49,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4948453608247423) internal successors, (1356), 388 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1356 transitions. [2021-03-11 14:35:49,958 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:49,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:49,958 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1356 transitions. [2021-03-11 14:35:49,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1356 transitions. [2021-03-11 14:35:49,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:49,958 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:49,958 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:49,958 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-03-11 14:35:49,959 INFO L428 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:49,959 INFO L82 PathProgramCache]: Analyzing trace with hash -930054911, now seen corresponding path program 220 times [2021-03-11 14:35:49,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:49,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066676954] [2021-03-11 14:35:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:49,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:49,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:49,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:49,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:49,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:49,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:49,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:49,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:50,017 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:50,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:50,044 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:50,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:50,067 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:50,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066676954] [2021-03-11 14:35:50,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:50,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969947121] [2021-03-11 14:35:50,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:50,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:50,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,090 INFO L87 Difference]: Start difference. First operand 389 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,163 INFO L93 Difference]: Finished difference Result 579 states and 1734 transitions. [2021-03-11 14:35:50,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:50,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:50,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,164 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:35:50,164 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:50,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 388. [2021-03-11 14:35:50,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.498708010335917) internal successors, (1354), 387 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1354 transitions. [2021-03-11 14:35:50,170 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1354 transitions. Word has length 22 [2021-03-11 14:35:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,171 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1354 transitions. [2021-03-11 14:35:50,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1354 transitions. [2021-03-11 14:35:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:50,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-03-11 14:35:50,171 INFO L428 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1229244729, now seen corresponding path program 221 times [2021-03-11 14:35:50,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767254376] [2021-03-11 14:35:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:50,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,214 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:50,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:50,239 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:50,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,270 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:50,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:50,301 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:50,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767254376] [2021-03-11 14:35:50,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:50,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663901775] [2021-03-11 14:35:50,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:50,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:50,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,324 INFO L87 Difference]: Start difference. First operand 388 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,405 INFO L93 Difference]: Finished difference Result 578 states and 1733 transitions. [2021-03-11 14:35:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:50,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:50,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,406 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:35:50,406 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:50,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 390. [2021-03-11 14:35:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:35:50,413 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:50,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,413 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:35:50,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,413 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:35:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:50,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-03-11 14:35:50,414 INFO L428 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1764474531, now seen corresponding path program 222 times [2021-03-11 14:35:50,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723818069] [2021-03-11 14:35:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:50,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:50,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:50,471 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:50,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:50,502 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:50,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:50,526 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:50,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723818069] [2021-03-11 14:35:50,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:50,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951358697] [2021-03-11 14:35:50,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:50,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,549 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,619 INFO L93 Difference]: Finished difference Result 581 states and 1737 transitions. [2021-03-11 14:35:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:50,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:50,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,620 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:35:50,620 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:35:50,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:50,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:35:50,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 387. [2021-03-11 14:35:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5025906735751295) internal successors, (1352), 386 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1352 transitions. [2021-03-11 14:35:50,633 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1352 transitions. Word has length 22 [2021-03-11 14:35:50,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,633 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1352 transitions. [2021-03-11 14:35:50,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,633 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1352 transitions. [2021-03-11 14:35:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:50,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-03-11 14:35:50,634 INFO L428 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash -562446271, now seen corresponding path program 223 times [2021-03-11 14:35:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687438753] [2021-03-11 14:35:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:50,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,669 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:50,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:50,709 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:50,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:50,732 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:50,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687438753] [2021-03-11 14:35:50,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:50,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197461334] [2021-03-11 14:35:50,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:50,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:50,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,755 INFO L87 Difference]: Start difference. First operand 387 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:50,834 INFO L93 Difference]: Finished difference Result 578 states and 1733 transitions. [2021-03-11 14:35:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:50,836 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:35:50,836 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:35:50,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:35:50,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 390. [2021-03-11 14:35:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.493573264781491) internal successors, (1359), 389 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1359 transitions. [2021-03-11 14:35:50,842 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1359 transitions. Word has length 22 [2021-03-11 14:35:50,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:50,842 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1359 transitions. [2021-03-11 14:35:50,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:50,842 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1359 transitions. [2021-03-11 14:35:50,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:50,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:50,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:50,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-03-11 14:35:50,843 INFO L428 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1048494687, now seen corresponding path program 224 times [2021-03-11 14:35:50,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:50,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476185655] [2021-03-11 14:35:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:50,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:50,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:50,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:50,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:50,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:50,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:50,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:50,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:50,900 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:50,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:50,919 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:50,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:50,942 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:50,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:50,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476185655] [2021-03-11 14:35:50,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:50,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:50,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031563646] [2021-03-11 14:35:50,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:50,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:50,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:50,964 INFO L87 Difference]: Start difference. First operand 390 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,035 INFO L93 Difference]: Finished difference Result 579 states and 1734 transitions. [2021-03-11 14:35:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:51,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,036 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:35:51,036 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:35:51,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:35:51,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 389. [2021-03-11 14:35:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:35:51,043 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:51,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,043 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:35:51,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,043 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:35:51,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:51,044 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,044 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-03-11 14:35:51,044 INFO L428 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1544337849, now seen corresponding path program 225 times [2021-03-11 14:35:51,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212002362] [2021-03-11 14:35:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:51,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,078 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:51,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:51,124 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:51,148 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:51,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212002362] [2021-03-11 14:35:51,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:51,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863500687] [2021-03-11 14:35:51,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:51,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:51,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,171 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,238 INFO L93 Difference]: Finished difference Result 585 states and 1745 transitions. [2021-03-11 14:35:51,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:51,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:51,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,239 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:35:51,239 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:35:51,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:35:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 391. [2021-03-11 14:35:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:35:51,246 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,246 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:35:51,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,246 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:35:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:51,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,246 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-03-11 14:35:51,246 INFO L428 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1006482271, now seen corresponding path program 226 times [2021-03-11 14:35:51,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080974109] [2021-03-11 14:35:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:51,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,283 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,303 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:51,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:51,337 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:51,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:51,360 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:51,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080974109] [2021-03-11 14:35:51,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:51,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267249270] [2021-03-11 14:35:51,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:51,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:51,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,382 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,445 INFO L93 Difference]: Finished difference Result 592 states and 1757 transitions. [2021-03-11 14:35:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,448 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:35:51,448 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:35:51,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:51,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:35:51,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 389. [2021-03-11 14:35:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4922680412371134) internal successors, (1355), 388 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1355 transitions. [2021-03-11 14:35:51,454 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,454 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1355 transitions. [2021-03-11 14:35:51,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1355 transitions. [2021-03-11 14:35:51,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:51,455 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-03-11 14:35:51,455 INFO L428 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1554840953, now seen corresponding path program 227 times [2021-03-11 14:35:51,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105512344] [2021-03-11 14:35:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:51,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,511 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:51,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:51,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:51,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:51,561 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:51,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105512344] [2021-03-11 14:35:51,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:51,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885035702] [2021-03-11 14:35:51,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:51,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:51,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,583 INFO L87 Difference]: Start difference. First operand 389 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,653 INFO L93 Difference]: Finished difference Result 588 states and 1750 transitions. [2021-03-11 14:35:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:51,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:51,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,654 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:35:51,654 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:35:51,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:51,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:35:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 392. [2021-03-11 14:35:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4782608695652173) internal successors, (1360), 391 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1360 transitions. [2021-03-11 14:35:51,661 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1360 transitions. Word has length 22 [2021-03-11 14:35:51,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,661 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1360 transitions. [2021-03-11 14:35:51,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,661 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1360 transitions. [2021-03-11 14:35:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:51,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,661 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-03-11 14:35:51,662 INFO L428 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,662 INFO L82 PathProgramCache]: Analyzing trace with hash -593955583, now seen corresponding path program 228 times [2021-03-11 14:35:51,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437401541] [2021-03-11 14:35:51,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:51,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:51,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:51,716 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:51,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:51,742 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:51,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:51,766 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:51,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:51,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437401541] [2021-03-11 14:35:51,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:51,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354506888] [2021-03-11 14:35:51,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:51,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:51,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,796 INFO L87 Difference]: Start difference. First operand 392 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:51,856 INFO L93 Difference]: Finished difference Result 594 states and 1759 transitions. [2021-03-11 14:35:51,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:51,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:51,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:51,857 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:51,857 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:35:51,857 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:35:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 387. [2021-03-11 14:35:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4974093264248705) internal successors, (1350), 386 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1350 transitions. [2021-03-11 14:35:51,863 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1350 transitions. Word has length 22 [2021-03-11 14:35:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:51,864 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1350 transitions. [2021-03-11 14:35:51,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1350 transitions. [2021-03-11 14:35:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:51,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:51,864 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:51,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-03-11 14:35:51,864 INFO L428 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:51,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2104539905, now seen corresponding path program 229 times [2021-03-11 14:35:51,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:51,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381191143] [2021-03-11 14:35:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:51,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:51,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:51,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:51,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:51,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:51,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:51,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:51,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:51,921 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:51,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:51,949 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:51,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:51,972 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:51,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:51,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381191143] [2021-03-11 14:35:51,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:51,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:51,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714995997] [2021-03-11 14:35:51,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:51,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:51,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:51,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:51,995 INFO L87 Difference]: Start difference. First operand 387 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,056 INFO L93 Difference]: Finished difference Result 587 states and 1752 transitions. [2021-03-11 14:35:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:52,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,058 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:35:52,058 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:35:52,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:35:52,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 390. [2021-03-11 14:35:52,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:35:52,064 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:35:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,064 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:35:52,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:35:52,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:52,065 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,065 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-03-11 14:35:52,065 INFO L428 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,065 INFO L82 PathProgramCache]: Analyzing trace with hash -44256631, now seen corresponding path program 230 times [2021-03-11 14:35:52,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567627090] [2021-03-11 14:35:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,100 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:52,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:52,149 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:52,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:52,179 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:52,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567627090] [2021-03-11 14:35:52,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:52,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275117652] [2021-03-11 14:35:52,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:52,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:52,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,202 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,281 INFO L93 Difference]: Finished difference Result 591 states and 1759 transitions. [2021-03-11 14:35:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,282 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:35:52,282 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:35:52,282 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:35:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 389. [2021-03-11 14:35:52,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4922680412371134) internal successors, (1355), 388 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1355 transitions. [2021-03-11 14:35:52,289 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1355 transitions. Word has length 22 [2021-03-11 14:35:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,289 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1355 transitions. [2021-03-11 14:35:52,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1355 transitions. [2021-03-11 14:35:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:52,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,289 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-03-11 14:35:52,289 INFO L428 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,290 INFO L82 PathProgramCache]: Analyzing trace with hash 504102051, now seen corresponding path program 231 times [2021-03-11 14:35:52,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867015476] [2021-03-11 14:35:52,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:52,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:52,378 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:52,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:52,402 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:52,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:52,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867015476] [2021-03-11 14:35:52,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:52,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533174786] [2021-03-11 14:35:52,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:52,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:52,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,425 INFO L87 Difference]: Start difference. First operand 389 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,479 INFO L93 Difference]: Finished difference Result 591 states and 1758 transitions. [2021-03-11 14:35:52,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:52,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:52,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,481 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:35:52,481 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:52,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:52,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:52,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 391. [2021-03-11 14:35:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.482051282051282) internal successors, (1358), 390 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1358 transitions. [2021-03-11 14:35:52,487 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1358 transitions. Word has length 22 [2021-03-11 14:35:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,487 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1358 transitions. [2021-03-11 14:35:52,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,487 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1358 transitions. [2021-03-11 14:35:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:52,488 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-03-11 14:35:52,488 INFO L428 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash -33753527, now seen corresponding path program 232 times [2021-03-11 14:35:52,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301342284] [2021-03-11 14:35:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:52,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:52,571 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:52,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:52,594 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:52,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301342284] [2021-03-11 14:35:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:52,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470457234] [2021-03-11 14:35:52,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,617 INFO L87 Difference]: Start difference. First operand 391 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,683 INFO L93 Difference]: Finished difference Result 598 states and 1770 transitions. [2021-03-11 14:35:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:52,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:52,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,684 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:52,684 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:35:52,684 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:35:52,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 389. [2021-03-11 14:35:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4871134020618557) internal successors, (1353), 388 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1353 transitions. [2021-03-11 14:35:52,691 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,691 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1353 transitions. [2021-03-11 14:35:52,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1353 transitions. [2021-03-11 14:35:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:52,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-03-11 14:35:52,691 INFO L428 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash 462089635, now seen corresponding path program 233 times [2021-03-11 14:35:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379761725] [2021-03-11 14:35:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,767 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:52,789 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:52,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:52,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379761725] [2021-03-11 14:35:52,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:52,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:52,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687627046] [2021-03-11 14:35:52,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:52,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:52,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:52,812 INFO L87 Difference]: Start difference. First operand 389 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:52,886 INFO L93 Difference]: Finished difference Result 603 states and 1784 transitions. [2021-03-11 14:35:52,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:52,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:52,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:52,887 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:35:52,887 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:35:52,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:52,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:35:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 395. [2021-03-11 14:35:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4619289340101522) internal successors, (1364), 394 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1364 transitions. [2021-03-11 14:35:52,893 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:52,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:52,894 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1364 transitions. [2021-03-11 14:35:52,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1364 transitions. [2021-03-11 14:35:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:52,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:52,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:52,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-03-11 14:35:52,894 INFO L428 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:52,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:52,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2073030593, now seen corresponding path program 234 times [2021-03-11 14:35:52,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26447321] [2021-03-11 14:35:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:52,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:52,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:52,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:52,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:52,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:52,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:52,931 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:52,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:52,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:52,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:52,970 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:52,994 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:52,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26447321] [2021-03-11 14:35:53,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:53,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144863851] [2021-03-11 14:35:53,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:53,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:53,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,016 INFO L87 Difference]: Start difference. First operand 395 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,078 INFO L93 Difference]: Finished difference Result 606 states and 1784 transitions. [2021-03-11 14:35:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,080 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:35:53,080 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:53,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:53,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 387. [2021-03-11 14:35:53,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4922279792746114) internal successors, (1348), 386 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1348 transitions. [2021-03-11 14:35:53,086 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1348 transitions. Word has length 22 [2021-03-11 14:35:53,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,086 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1348 transitions. [2021-03-11 14:35:53,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1348 transitions. [2021-03-11 14:35:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:53,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-03-11 14:35:53,087 INFO L428 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,087 INFO L82 PathProgramCache]: Analyzing trace with hash -253890209, now seen corresponding path program 235 times [2021-03-11 14:35:53,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100586433] [2021-03-11 14:35:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,107 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:53,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:53,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:53,203 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:53,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100586433] [2021-03-11 14:35:53,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:53,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305619098] [2021-03-11 14:35:53,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:53,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:53,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,226 INFO L87 Difference]: Start difference. First operand 387 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,306 INFO L93 Difference]: Finished difference Result 594 states and 1769 transitions. [2021-03-11 14:35:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,307 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:35:53,307 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:35:53,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:35:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 392. [2021-03-11 14:35:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4808184143222505) internal successors, (1361), 391 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1361 transitions. [2021-03-11 14:35:53,314 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:53,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,314 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1361 transitions. [2021-03-11 14:35:53,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1361 transitions. [2021-03-11 14:35:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:53,314 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,314 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-03-11 14:35:53,314 INFO L428 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,315 INFO L82 PathProgramCache]: Analyzing trace with hash 281339593, now seen corresponding path program 236 times [2021-03-11 14:35:53,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608680361] [2021-03-11 14:35:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:53,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:53,426 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:53,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:53,449 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:53,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:53,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608680361] [2021-03-11 14:35:53,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:53,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767309366] [2021-03-11 14:35:53,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:53,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,472 INFO L87 Difference]: Start difference. First operand 392 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,548 INFO L93 Difference]: Finished difference Result 597 states and 1773 transitions. [2021-03-11 14:35:53,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:53,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,549 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:35:53,549 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:35:53,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:53,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:35:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 390. [2021-03-11 14:35:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.48586118251928) internal successors, (1356), 389 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1356 transitions. [2021-03-11 14:35:53,556 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1356 transitions. Word has length 22 [2021-03-11 14:35:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,556 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1356 transitions. [2021-03-11 14:35:53,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1356 transitions. [2021-03-11 14:35:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:53,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,556 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-03-11 14:35:53,557 INFO L428 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1854328063, now seen corresponding path program 237 times [2021-03-11 14:35:53,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077257998] [2021-03-11 14:35:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,574 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,614 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:53,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:53,641 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:53,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:53,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:53,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077257998] [2021-03-11 14:35:53,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:53,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638265744] [2021-03-11 14:35:53,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:53,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,693 INFO L87 Difference]: Start difference. First operand 390 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:53,784 INFO L93 Difference]: Finished difference Result 598 states and 1774 transitions. [2021-03-11 14:35:53,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:53,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:53,785 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:35:53,785 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:35:53,786 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:35:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 393. [2021-03-11 14:35:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4719387755102042) internal successors, (1361), 392 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1361 transitions. [2021-03-11 14:35:53,792 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1361 transitions. Word has length 22 [2021-03-11 14:35:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:53,792 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1361 transitions. [2021-03-11 14:35:53,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1361 transitions. [2021-03-11 14:35:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:53,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:53,793 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:53,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-03-11 14:35:53,793 INFO L428 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash 291842697, now seen corresponding path program 238 times [2021-03-11 14:35:53,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:53,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840759938] [2021-03-11 14:35:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:53,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:53,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:53,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:53,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:53,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:53,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:53,829 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:53,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:53,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:53,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:53,889 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:53,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:53,914 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:53,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:53,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840759938] [2021-03-11 14:35:53,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:53,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:53,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975604609] [2021-03-11 14:35:53,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:53,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:53,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:53,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:53,937 INFO L87 Difference]: Start difference. First operand 393 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,017 INFO L93 Difference]: Finished difference Result 604 states and 1783 transitions. [2021-03-11 14:35:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:54,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,018 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:35:54,018 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:35:54,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:35:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 390. [2021-03-11 14:35:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4781491002570695) internal successors, (1353), 389 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1353 transitions. [2021-03-11 14:35:54,024 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1353 transitions. Word has length 22 [2021-03-11 14:35:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,024 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1353 transitions. [2021-03-11 14:35:54,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1353 transitions. [2021-03-11 14:35:54,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:54,025 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-03-11 14:35:54,025 INFO L428 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1906843583, now seen corresponding path program 239 times [2021-03-11 14:35:54,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224997519] [2021-03-11 14:35:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,044 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,062 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:54,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:54,086 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,104 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:54,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:54,127 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:54,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224997519] [2021-03-11 14:35:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:54,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565168004] [2021-03-11 14:35:54,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:54,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,150 INFO L87 Difference]: Start difference. First operand 390 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,248 INFO L93 Difference]: Finished difference Result 607 states and 1792 transitions. [2021-03-11 14:35:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:54,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:54,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,250 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:35:54,250 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:35:54,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:35:54,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 396. [2021-03-11 14:35:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4531645569620255) internal successors, (1364), 395 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1364 transitions. [2021-03-11 14:35:54,256 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1364 transitions. Word has length 22 [2021-03-11 14:35:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,256 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1364 transitions. [2021-03-11 14:35:54,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1364 transitions. [2021-03-11 14:35:54,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:54,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-03-11 14:35:54,257 INFO L428 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,257 INFO L82 PathProgramCache]: Analyzing trace with hash -295902625, now seen corresponding path program 240 times [2021-03-11 14:35:54,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798339883] [2021-03-11 14:35:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,275 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:54,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:54,317 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,335 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:54,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:54,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:54,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798339883] [2021-03-11 14:35:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362763763] [2021-03-11 14:35:54,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:54,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,382 INFO L87 Difference]: Start difference. First operand 396 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,450 INFO L93 Difference]: Finished difference Result 610 states and 1792 transitions. [2021-03-11 14:35:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:54,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,451 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:35:54,451 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:35:54,452 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:35:54,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 383. [2021-03-11 14:35:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.507853403141361) internal successors, (1340), 382 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1340 transitions. [2021-03-11 14:35:54,458 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1340 transitions. Word has length 22 [2021-03-11 14:35:54,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,458 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1340 transitions. [2021-03-11 14:35:54,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1340 transitions. [2021-03-11 14:35:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:54,458 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,458 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-03-11 14:35:54,458 INFO L428 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1071856975, now seen corresponding path program 241 times [2021-03-11 14:35:54,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548430856] [2021-03-11 14:35:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,478 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,495 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:54,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:54,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:54,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:54,559 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:54,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548430856] [2021-03-11 14:35:54,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:54,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652293844] [2021-03-11 14:35:54,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:54,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:54,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,582 INFO L87 Difference]: Start difference. First operand 383 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,660 INFO L93 Difference]: Finished difference Result 623 states and 1860 transitions. [2021-03-11 14:35:54,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:54,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:54,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,661 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:35:54,661 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:35:54,662 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:35:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 393. [2021-03-11 14:35:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.50765306122449) internal successors, (1375), 392 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1375 transitions. [2021-03-11 14:35:54,668 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1375 transitions. Word has length 22 [2021-03-11 14:35:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,668 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1375 transitions. [2021-03-11 14:35:54,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1375 transitions. [2021-03-11 14:35:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:54,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,669 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-03-11 14:35:54,669 INFO L428 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1226349117, now seen corresponding path program 242 times [2021-03-11 14:35:54,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291950238] [2021-03-11 14:35:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:54,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:54,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:54,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:54,745 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:54,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:54,769 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:54,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291950238] [2021-03-11 14:35:54,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:54,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805675058] [2021-03-11 14:35:54,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:54,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:54,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,791 INFO L87 Difference]: Start difference. First operand 393 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:54,854 INFO L93 Difference]: Finished difference Result 621 states and 1855 transitions. [2021-03-11 14:35:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:54,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:54,855 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:35:54,855 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:35:54,855 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:35:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 392. [2021-03-11 14:35:54,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.5115089514066495) internal successors, (1373), 391 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1373 transitions. [2021-03-11 14:35:54,862 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:54,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:54,862 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1373 transitions. [2021-03-11 14:35:54,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1373 transitions. [2021-03-11 14:35:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:54,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:54,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:54,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-03-11 14:35:54,862 INFO L428 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:54,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1578203241, now seen corresponding path program 243 times [2021-03-11 14:35:54,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:54,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489199156] [2021-03-11 14:35:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:54,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:54,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:54,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:54,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:54,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:54,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:54,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:54,921 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:54,952 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:54,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:54,975 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:54,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:54,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:54,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489199156] [2021-03-11 14:35:54,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:54,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:54,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930106914] [2021-03-11 14:35:54,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:54,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:54,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:54,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:54,998 INFO L87 Difference]: Start difference. First operand 392 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,077 INFO L93 Difference]: Finished difference Result 633 states and 1880 transitions. [2021-03-11 14:35:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:55,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,079 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:35:55,079 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:35:55,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:35:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 396. [2021-03-11 14:35:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4936708860759493) internal successors, (1380), 395 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1380 transitions. [2021-03-11 14:35:55,085 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1380 transitions. Word has length 22 [2021-03-11 14:35:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,085 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1380 transitions. [2021-03-11 14:35:55,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1380 transitions. [2021-03-11 14:35:55,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:55,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-03-11 14:35:55,086 INFO L428 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1651510653, now seen corresponding path program 244 times [2021-03-11 14:35:55,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146838660] [2021-03-11 14:35:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:55,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:55,120 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:55,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:55,144 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:55,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:55,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:55,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:55,200 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:55,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146838660] [2021-03-11 14:35:55,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:55,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346967612] [2021-03-11 14:35:55,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:55,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:55,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,222 INFO L87 Difference]: Start difference. First operand 396 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,289 INFO L93 Difference]: Finished difference Result 638 states and 1886 transitions. [2021-03-11 14:35:55,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:55,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:55,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,290 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:35:55,290 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:35:55,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:35:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 392. [2021-03-11 14:35:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.506393861892583) internal successors, (1371), 391 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1371 transitions. [2021-03-11 14:35:55,297 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1371 transitions. Word has length 22 [2021-03-11 14:35:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,297 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1371 transitions. [2021-03-11 14:35:55,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1371 transitions. [2021-03-11 14:35:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:55,298 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,298 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-03-11 14:35:55,298 INFO L428 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash 132257529, now seen corresponding path program 245 times [2021-03-11 14:35:55,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70519041] [2021-03-11 14:35:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:55,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:55,334 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:55,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:55,359 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:55,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:55,393 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:55,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:55,417 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:55,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:55,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70519041] [2021-03-11 14:35:55,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:55,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501525117] [2021-03-11 14:35:55,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:55,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:55,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,440 INFO L87 Difference]: Start difference. First operand 392 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,498 INFO L93 Difference]: Finished difference Result 627 states and 1864 transitions. [2021-03-11 14:35:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,499 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:35:55,499 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:35:55,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:55,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:35:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 394. [2021-03-11 14:35:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.49618320610687) internal successors, (1374), 393 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1374 transitions. [2021-03-11 14:35:55,506 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:55,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,506 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1374 transitions. [2021-03-11 14:35:55,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1374 transitions. [2021-03-11 14:35:55,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:55,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-03-11 14:35:55,506 INFO L428 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -405598049, now seen corresponding path program 246 times [2021-03-11 14:35:55,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363796655] [2021-03-11 14:35:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:55,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:55,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:55,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:55,565 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:55,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:55,591 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:55,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:55,615 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:55,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363796655] [2021-03-11 14:35:55,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:55,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346452626] [2021-03-11 14:35:55,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:55,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:55,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,637 INFO L87 Difference]: Start difference. First operand 394 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,706 INFO L93 Difference]: Finished difference Result 634 states and 1876 transitions. [2021-03-11 14:35:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:55,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,708 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:35:55,708 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:35:55,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:55,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:35:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 390. [2021-03-11 14:35:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.511568123393316) internal successors, (1366), 389 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1366 transitions. [2021-03-11 14:35:55,714 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1366 transitions. Word has length 22 [2021-03-11 14:35:55,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,714 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1366 transitions. [2021-03-11 14:35:55,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,714 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1366 transitions. [2021-03-11 14:35:55,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:55,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,715 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-03-11 14:35:55,715 INFO L428 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1758563287, now seen corresponding path program 247 times [2021-03-11 14:35:55,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974428817] [2021-03-11 14:35:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:55,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:55,749 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:55,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:55,771 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:55,789 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:55,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:55,812 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:55,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:55,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974428817] [2021-03-11 14:35:55,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:55,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:55,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043002543] [2021-03-11 14:35:55,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:55,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:55,835 INFO L87 Difference]: Start difference. First operand 390 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:55,918 INFO L93 Difference]: Finished difference Result 618 states and 1848 transitions. [2021-03-11 14:35:55,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:55,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:55,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:55,919 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:35:55,919 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:35:55,920 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:55,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:35:55,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 392. [2021-03-11 14:35:55,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:35:55,926 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:35:55,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:55,926 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:35:55,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:55,926 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:35:55,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:55,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:55,927 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:55,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-03-11 14:35:55,927 INFO L428 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:55,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1604071145, now seen corresponding path program 248 times [2021-03-11 14:35:55,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:55,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037323633] [2021-03-11 14:35:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:55,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:55,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:55,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:55,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:55,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:55,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:55,961 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:55,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:55,983 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:55,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:56,001 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:56,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:56,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:56,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037323633] [2021-03-11 14:35:56,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:56,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694478998] [2021-03-11 14:35:56,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:56,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:56,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,048 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,109 INFO L93 Difference]: Finished difference Result 616 states and 1843 transitions. [2021-03-11 14:35:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:56,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,110 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:35:56,110 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:56,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:56,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 391. [2021-03-11 14:35:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5076923076923077) internal successors, (1368), 390 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1368 transitions. [2021-03-11 14:35:56,117 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:56,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,117 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1368 transitions. [2021-03-11 14:35:56,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1368 transitions. [2021-03-11 14:35:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:56,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-03-11 14:35:56,118 INFO L428 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,118 INFO L82 PathProgramCache]: Analyzing trace with hash -664471699, now seen corresponding path program 249 times [2021-03-11 14:35:56,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850726023] [2021-03-11 14:35:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:56,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,205 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:56,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:56,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:56,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850726023] [2021-03-11 14:35:56,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:56,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927438852] [2021-03-11 14:35:56,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:56,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:56,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,251 INFO L87 Difference]: Start difference. First operand 391 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,332 INFO L93 Difference]: Finished difference Result 625 states and 1863 transitions. [2021-03-11 14:35:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,333 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:35:56,333 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:35:56,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:35:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 394. [2021-03-11 14:35:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4936386768447836) internal successors, (1373), 393 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1373 transitions. [2021-03-11 14:35:56,340 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1373 transitions. Word has length 22 [2021-03-11 14:35:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,340 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1373 transitions. [2021-03-11 14:35:56,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1373 transitions. [2021-03-11 14:35:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:56,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-03-11 14:35:56,341 INFO L428 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1716282921, now seen corresponding path program 250 times [2021-03-11 14:35:56,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741664368] [2021-03-11 14:35:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:56,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:56,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:56,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:56,455 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:56,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741664368] [2021-03-11 14:35:56,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:56,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15023939] [2021-03-11 14:35:56,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:56,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,482 INFO L87 Difference]: Start difference. First operand 394 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,566 INFO L93 Difference]: Finished difference Result 628 states and 1866 transitions. [2021-03-11 14:35:56,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:56,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:56,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,568 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:35:56,568 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:35:56,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:35:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 391. [2021-03-11 14:35:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.505128205128205) internal successors, (1367), 390 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1367 transitions. [2021-03-11 14:35:56,575 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,575 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1367 transitions. [2021-03-11 14:35:56,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1367 transitions. [2021-03-11 14:35:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:56,576 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,576 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-03-11 14:35:56,576 INFO L428 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,576 INFO L82 PathProgramCache]: Analyzing trace with hash -2110417411, now seen corresponding path program 251 times [2021-03-11 14:35:56,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140440122] [2021-03-11 14:35:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,633 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:56,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:56,660 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:56,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:56,684 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:56,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140440122] [2021-03-11 14:35:56,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:56,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979485136] [2021-03-11 14:35:56,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:56,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,707 INFO L87 Difference]: Start difference. First operand 391 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,774 INFO L93 Difference]: Finished difference Result 619 states and 1848 transitions. [2021-03-11 14:35:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:56,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,775 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:35:56,775 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:35:56,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:35:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 392. [2021-03-11 14:35:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.498721227621483) internal successors, (1368), 391 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1368 transitions. [2021-03-11 14:35:56,782 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1368 transitions. Word has length 22 [2021-03-11 14:35:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,782 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1368 transitions. [2021-03-11 14:35:56,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1368 transitions. [2021-03-11 14:35:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:56,783 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:56,783 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:56,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-03-11 14:35:56,783 INFO L428 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:56,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1111464505, now seen corresponding path program 252 times [2021-03-11 14:35:56,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:56,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628581091] [2021-03-11 14:35:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:56,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:56,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:56,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:56,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:56,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:56,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:56,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:35:56,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:35:56,840 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:56,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:56,867 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:56,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:56,890 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:56,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:56,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:56,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628581091] [2021-03-11 14:35:56,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:56,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:56,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551617408] [2021-03-11 14:35:56,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:56,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:56,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:56,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:56,913 INFO L87 Difference]: Start difference. First operand 392 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:56,991 INFO L93 Difference]: Finished difference Result 624 states and 1857 transitions. [2021-03-11 14:35:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:56,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:56,992 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:35:56,992 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:35:56,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:56,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:35:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 390. [2021-03-11 14:35:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:35:56,999 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:35:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:56,999 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:35:56,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:35:57,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:57,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-03-11 14:35:57,000 INFO L428 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2147360659, now seen corresponding path program 253 times [2021-03-11 14:35:57,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595861600] [2021-03-11 14:35:57,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:57,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:57,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:57,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:57,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:57,109 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:57,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595861600] [2021-03-11 14:35:57,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:57,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241501122] [2021-03-11 14:35:57,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:57,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:57,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,133 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,212 INFO L93 Difference]: Finished difference Result 646 states and 1915 transitions. [2021-03-11 14:35:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,213 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:35:57,213 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:35:57,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:35:57,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 398. [2021-03-11 14:35:57,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.491183879093199) internal successors, (1386), 397 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1386 transitions. [2021-03-11 14:35:57,220 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1386 transitions. Word has length 22 [2021-03-11 14:35:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,220 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1386 transitions. [2021-03-11 14:35:57,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1386 transitions. [2021-03-11 14:35:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:57,221 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,221 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-03-11 14:35:57,221 INFO L428 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1095549437, now seen corresponding path program 254 times [2021-03-11 14:35:57,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539812378] [2021-03-11 14:35:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:57,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:57,278 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:35:57,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:35:57,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:57,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:57,330 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:57,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539812378] [2021-03-11 14:35:57,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:57,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342616534] [2021-03-11 14:35:57,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:57,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:57,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,353 INFO L87 Difference]: Start difference. First operand 398 states and 1386 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,425 INFO L93 Difference]: Finished difference Result 649 states and 1918 transitions. [2021-03-11 14:35:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,426 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:35:57,426 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:35:57,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:35:57,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 395. [2021-03-11 14:35:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.49746192893401) internal successors, (1378), 394 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1378 transitions. [2021-03-11 14:35:57,433 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1378 transitions. Word has length 22 [2021-03-11 14:35:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,433 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1378 transitions. [2021-03-11 14:35:57,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1378 transitions. [2021-03-11 14:35:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:57,434 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,434 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-03-11 14:35:57,434 INFO L428 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1559615337, now seen corresponding path program 255 times [2021-03-11 14:35:57,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477293440] [2021-03-11 14:35:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,467 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:57,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:57,493 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:57,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:57,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:57,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:57,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:57,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477293440] [2021-03-11 14:35:57,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:57,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112420189] [2021-03-11 14:35:57,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:57,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:57,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,571 INFO L87 Difference]: Start difference. First operand 395 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,655 INFO L93 Difference]: Finished difference Result 649 states and 1917 transitions. [2021-03-11 14:35:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:57,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,657 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:35:57,657 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:35:57,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:57,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:35:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 399. [2021-03-11 14:35:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.479899497487437) internal successors, (1385), 398 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1385 transitions. [2021-03-11 14:35:57,664 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1385 transitions. Word has length 22 [2021-03-11 14:35:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,664 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1385 transitions. [2021-03-11 14:35:57,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1385 transitions. [2021-03-11 14:35:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:57,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,667 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-03-11 14:35:57,667 INFO L428 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1632922749, now seen corresponding path program 256 times [2021-03-11 14:35:57,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277848509] [2021-03-11 14:35:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:57,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:57,726 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:57,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:57,758 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:57,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:57,782 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:57,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277848509] [2021-03-11 14:35:57,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:57,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812567332] [2021-03-11 14:35:57,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:57,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:57,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,805 INFO L87 Difference]: Start difference. First operand 399 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:57,867 INFO L93 Difference]: Finished difference Result 654 states and 1923 transitions. [2021-03-11 14:35:57,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:57,868 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:35:57,868 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:35:57,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:35:57,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 395. [2021-03-11 14:35:57,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.487309644670051) internal successors, (1374), 394 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1374 transitions. [2021-03-11 14:35:57,875 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1374 transitions. Word has length 22 [2021-03-11 14:35:57,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:57,875 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1374 transitions. [2021-03-11 14:35:57,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:57,875 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1374 transitions. [2021-03-11 14:35:57,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:57,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:57,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:57,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-03-11 14:35:57,876 INFO L428 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash -926888087, now seen corresponding path program 257 times [2021-03-11 14:35:57,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:57,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418595391] [2021-03-11 14:35:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:57,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:57,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:57,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:57,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:57,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:57,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:57,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:57,953 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:57,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:57,976 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:57,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:57,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418595391] [2021-03-11 14:35:57,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:57,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:57,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308766928] [2021-03-11 14:35:57,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:57,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:57,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:57,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:57,999 INFO L87 Difference]: Start difference. First operand 395 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,083 INFO L93 Difference]: Finished difference Result 659 states and 1935 transitions. [2021-03-11 14:35:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:58,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:58,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,085 INFO L225 Difference]: With dead ends: 659 [2021-03-11 14:35:58,085 INFO L226 Difference]: Without dead ends: 645 [2021-03-11 14:35:58,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-03-11 14:35:58,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 403. [2021-03-11 14:35:58,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.4527363184079602) internal successors, (1388), 402 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1388 transitions. [2021-03-11 14:35:58,092 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1388 transitions. Word has length 22 [2021-03-11 14:35:58,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,092 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 1388 transitions. [2021-03-11 14:35:58,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1388 transitions. [2021-03-11 14:35:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:58,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-03-11 14:35:58,092 INFO L428 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash -908454061, now seen corresponding path program 258 times [2021-03-11 14:35:58,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664504772] [2021-03-11 14:35:58,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,127 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:58,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:58,150 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:58,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:58,169 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:58,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:58,193 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:58,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664504772] [2021-03-11 14:35:58,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:58,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116733228] [2021-03-11 14:35:58,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:58,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,216 INFO L87 Difference]: Start difference. First operand 403 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,274 INFO L93 Difference]: Finished difference Result 661 states and 1932 transitions. [2021-03-11 14:35:58,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:58,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:58,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,275 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:35:58,275 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:35:58,276 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:35:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 390. [2021-03-11 14:35:58,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.501285347043702) internal successors, (1362), 389 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1362 transitions. [2021-03-11 14:35:58,282 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1362 transitions. Word has length 22 [2021-03-11 14:35:58,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,282 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1362 transitions. [2021-03-11 14:35:58,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,282 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1362 transitions. [2021-03-11 14:35:58,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:58,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-03-11 14:35:58,283 INFO L428 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1667518271, now seen corresponding path program 259 times [2021-03-11 14:35:58,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027612197] [2021-03-11 14:35:58,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,318 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,339 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:58,366 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:58,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:58,390 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027612197] [2021-03-11 14:35:58,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:58,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277334726] [2021-03-11 14:35:58,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:58,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:58,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,413 INFO L87 Difference]: Start difference. First operand 390 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,474 INFO L93 Difference]: Finished difference Result 632 states and 1874 transitions. [2021-03-11 14:35:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,475 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:35:58,475 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:35:58,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:58,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:35:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 394. [2021-03-11 14:35:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4885496183206106) internal successors, (1371), 393 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1371 transitions. [2021-03-11 14:35:58,482 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1371 transitions. Word has length 22 [2021-03-11 14:35:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,482 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1371 transitions. [2021-03-11 14:35:58,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1371 transitions. [2021-03-11 14:35:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:58,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-03-11 14:35:58,483 INFO L428 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1554363645, now seen corresponding path program 260 times [2021-03-11 14:35:58,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465908201] [2021-03-11 14:35:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,504 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:58,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:58,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:58,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:58,591 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:58,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465908201] [2021-03-11 14:35:58,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:58,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369231715] [2021-03-11 14:35:58,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:58,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:58,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,614 INFO L87 Difference]: Start difference. First operand 394 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,698 INFO L93 Difference]: Finished difference Result 637 states and 1883 transitions. [2021-03-11 14:35:58,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:58,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:58,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,699 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:35:58,699 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:35:58,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:58,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:35:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 393. [2021-03-11 14:35:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.49234693877551) internal successors, (1369), 392 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1369 transitions. [2021-03-11 14:35:58,706 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1369 transitions. Word has length 22 [2021-03-11 14:35:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,706 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1369 transitions. [2021-03-11 14:35:58,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1369 transitions. [2021-03-11 14:35:58,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:58,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-03-11 14:35:58,706 INFO L428 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2039703703, now seen corresponding path program 261 times [2021-03-11 14:35:58,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921402150] [2021-03-11 14:35:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,741 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,762 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:58,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:58,788 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:58,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:58,812 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:58,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:58,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921402150] [2021-03-11 14:35:58,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:58,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:58,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741231741] [2021-03-11 14:35:58,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:58,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:58,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:58,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:58,835 INFO L87 Difference]: Start difference. First operand 393 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:58,893 INFO L93 Difference]: Finished difference Result 635 states and 1878 transitions. [2021-03-11 14:35:58,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:58,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:58,894 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:35:58,894 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:35:58,894 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:58,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:35:58,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 395. [2021-03-11 14:35:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.482233502538071) internal successors, (1372), 394 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1372 transitions. [2021-03-11 14:35:58,901 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1372 transitions. Word has length 22 [2021-03-11 14:35:58,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:58,901 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1372 transitions. [2021-03-11 14:35:58,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:58,901 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1372 transitions. [2021-03-11 14:35:58,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:58,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:58,902 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:58,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-03-11 14:35:58,902 INFO L428 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:58,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:58,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1501848125, now seen corresponding path program 262 times [2021-03-11 14:35:58,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:58,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177590290] [2021-03-11 14:35:58,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:58,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:58,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:58,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:58,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:58,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:58,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:58,939 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:58,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:58,960 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:58,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:58,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:58,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:59,010 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177590290] [2021-03-11 14:35:59,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:59,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202770939] [2021-03-11 14:35:59,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:59,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:59,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,033 INFO L87 Difference]: Start difference. First operand 395 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,093 INFO L93 Difference]: Finished difference Result 642 states and 1890 transitions. [2021-03-11 14:35:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,094 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:35:59,094 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:35:59,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:35:59,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 393. [2021-03-11 14:35:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4872448979591835) internal successors, (1367), 392 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1367 transitions. [2021-03-11 14:35:59,101 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,101 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1367 transitions. [2021-03-11 14:35:59,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1367 transitions. [2021-03-11 14:35:59,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:59,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,102 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-03-11 14:35:59,102 INFO L428 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2060709911, now seen corresponding path program 263 times [2021-03-11 14:35:59,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641632777] [2021-03-11 14:35:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:59,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:59,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,157 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:59,176 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:59,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:59,199 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641632777] [2021-03-11 14:35:59,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:59,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061289870] [2021-03-11 14:35:59,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:59,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:59,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,222 INFO L87 Difference]: Start difference. First operand 393 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,300 INFO L93 Difference]: Finished difference Result 651 states and 1912 transitions. [2021-03-11 14:35:59,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:59,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:59,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,302 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:35:59,302 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:35:59,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:35:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 401. [2021-03-11 14:35:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.4525) internal successors, (1381), 400 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1381 transitions. [2021-03-11 14:35:59,308 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1381 transitions. Word has length 22 [2021-03-11 14:35:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,308 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1381 transitions. [2021-03-11 14:35:59,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1381 transitions. [2021-03-11 14:35:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:59,309 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,309 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,309 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-03-11 14:35:59,309 INFO L428 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1699027583, now seen corresponding path program 264 times [2021-03-11 14:35:59,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23650703] [2021-03-11 14:35:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:35:59,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:35:59,344 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,365 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:35:59,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:35:59,384 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:59,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:59,408 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23650703] [2021-03-11 14:35:59,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:59,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256833044] [2021-03-11 14:35:59,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:59,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:59,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,430 INFO L87 Difference]: Start difference. First operand 401 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,488 INFO L93 Difference]: Finished difference Result 653 states and 1909 transitions. [2021-03-11 14:35:59,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:59,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:59,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,489 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:35:59,489 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:35:59,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:59,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:35:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 387. [2021-03-11 14:35:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5077720207253886) internal successors, (1354), 386 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1354 transitions. [2021-03-11 14:35:59,496 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1354 transitions. Word has length 22 [2021-03-11 14:35:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,496 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1354 transitions. [2021-03-11 14:35:59,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1354 transitions. [2021-03-11 14:35:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:59,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-03-11 14:35:59,497 INFO L428 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1950176613, now seen corresponding path program 265 times [2021-03-11 14:35:59,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484259813] [2021-03-11 14:35:59,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:59,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:59,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:59,549 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:59,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:59,591 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:59,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484259813] [2021-03-11 14:35:59,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:59,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190178906] [2021-03-11 14:35:59,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:59,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:59,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,613 INFO L87 Difference]: Start difference. First operand 387 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,688 INFO L93 Difference]: Finished difference Result 617 states and 1844 transitions. [2021-03-11 14:35:59,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:59,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:59,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,689 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:35:59,690 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:35:59,690 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:35:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 392. [2021-03-11 14:35:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.501278772378517) internal successors, (1369), 391 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1369 transitions. [2021-03-11 14:35:59,696 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1369 transitions. Word has length 22 [2021-03-11 14:35:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,696 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1369 transitions. [2021-03-11 14:35:59,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1369 transitions. [2021-03-11 14:35:59,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:59,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-03-11 14:35:59,697 INFO L428 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1795684471, now seen corresponding path program 266 times [2021-03-11 14:35:59,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212196145] [2021-03-11 14:35:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:59,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:59,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:59,746 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:35:59,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:35:59,765 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:35:59,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:35:59,789 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:35:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:35:59,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212196145] [2021-03-11 14:35:59,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:35:59,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:35:59,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199365049] [2021-03-11 14:35:59,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:35:59,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:35:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:35:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:35:59,812 INFO L87 Difference]: Start difference. First operand 392 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:35:59,876 INFO L93 Difference]: Finished difference Result 615 states and 1839 transitions. [2021-03-11 14:35:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:35:59,876 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:35:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:35:59,877 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:35:59,877 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:35:59,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:35:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:35:59,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 391. [2021-03-11 14:35:59,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.505128205128205) internal successors, (1367), 390 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1367 transitions. [2021-03-11 14:35:59,884 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1367 transitions. Word has length 22 [2021-03-11 14:35:59,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:35:59,884 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1367 transitions. [2021-03-11 14:35:59,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:35:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1367 transitions. [2021-03-11 14:35:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:35:59,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:35:59,884 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:35:59,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-03-11 14:35:59,884 INFO L428 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:35:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:35:59,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1443830347, now seen corresponding path program 267 times [2021-03-11 14:35:59,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:35:59,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548702355] [2021-03-11 14:35:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:35:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:35:59,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:35:59,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:35:59,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:35:59,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:35:59,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:35:59,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:35:59,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:35:59,933 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:35:59,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:35:59,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:35:59,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:35:59,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:35:59,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548702355] [2021-03-11 14:36:00,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:00,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918696123] [2021-03-11 14:36:00,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:00,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:00,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,008 INFO L87 Difference]: Start difference. First operand 391 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,087 INFO L93 Difference]: Finished difference Result 627 states and 1864 transitions. [2021-03-11 14:36:00,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:00,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,088 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:36:00,088 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:36:00,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:00,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:36:00,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 395. [2021-03-11 14:36:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.487309644670051) internal successors, (1374), 394 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1374 transitions. [2021-03-11 14:36:00,095 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1374 transitions. Word has length 22 [2021-03-11 14:36:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,095 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1374 transitions. [2021-03-11 14:36:00,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1374 transitions. [2021-03-11 14:36:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:00,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-03-11 14:36:00,096 INFO L428 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1370522935, now seen corresponding path program 268 times [2021-03-11 14:36:00,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607532582] [2021-03-11 14:36:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,128 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:00,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:00,151 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:00,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:00,180 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:00,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:00,204 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:00,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607532582] [2021-03-11 14:36:00,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:00,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106854244] [2021-03-11 14:36:00,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:00,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:00,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,227 INFO L87 Difference]: Start difference. First operand 395 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,313 INFO L93 Difference]: Finished difference Result 632 states and 1870 transitions. [2021-03-11 14:36:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:00,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,314 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:36:00,314 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:36:00,314 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:36:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 391. [2021-03-11 14:36:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.5) internal successors, (1365), 390 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1365 transitions. [2021-03-11 14:36:00,321 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1365 transitions. Word has length 22 [2021-03-11 14:36:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,321 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1365 transitions. [2021-03-11 14:36:00,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1365 transitions. [2021-03-11 14:36:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:00,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,322 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-03-11 14:36:00,322 INFO L428 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1405191237, now seen corresponding path program 269 times [2021-03-11 14:36:00,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737377166] [2021-03-11 14:36:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:00,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:00,373 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:00,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:00,401 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:00,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:00,426 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:00,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737377166] [2021-03-11 14:36:00,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:00,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843061831] [2021-03-11 14:36:00,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:00,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,449 INFO L87 Difference]: Start difference. First operand 391 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,517 INFO L93 Difference]: Finished difference Result 621 states and 1848 transitions. [2021-03-11 14:36:00,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:00,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,519 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:36:00,519 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:36:00,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:36:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 393. [2021-03-11 14:36:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.489795918367347) internal successors, (1368), 392 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1368 transitions. [2021-03-11 14:36:00,526 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,526 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1368 transitions. [2021-03-11 14:36:00,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,526 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1368 transitions. [2021-03-11 14:36:00,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:00,526 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,526 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-03-11 14:36:00,526 INFO L428 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,527 INFO L82 PathProgramCache]: Analyzing trace with hash 867335659, now seen corresponding path program 270 times [2021-03-11 14:36:00,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111220789] [2021-03-11 14:36:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,556 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:00,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:00,587 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:00,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:00,612 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:00,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:00,647 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:00,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:00,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111220789] [2021-03-11 14:36:00,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:00,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319049210] [2021-03-11 14:36:00,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:00,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:00,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,673 INFO L87 Difference]: Start difference. First operand 393 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,733 INFO L93 Difference]: Finished difference Result 628 states and 1860 transitions. [2021-03-11 14:36:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:00,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:00,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,734 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:36:00,734 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:36:00,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:00,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:36:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 389. [2021-03-11 14:36:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5051546391752577) internal successors, (1360), 388 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1360 transitions. [2021-03-11 14:36:00,741 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1360 transitions. Word has length 22 [2021-03-11 14:36:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,741 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1360 transitions. [2021-03-11 14:36:00,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1360 transitions. [2021-03-11 14:36:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:00,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,742 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-03-11 14:36:00,742 INFO L428 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,742 INFO L82 PathProgramCache]: Analyzing trace with hash -916985099, now seen corresponding path program 271 times [2021-03-11 14:36:00,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878783361] [2021-03-11 14:36:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:00,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:00,785 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:00,804 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:00,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:00,828 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:00,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:00,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878783361] [2021-03-11 14:36:00,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:00,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:00,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989368296] [2021-03-11 14:36:00,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:00,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:00,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:00,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:00,851 INFO L87 Difference]: Start difference. First operand 389 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:00,936 INFO L93 Difference]: Finished difference Result 611 states and 1830 transitions. [2021-03-11 14:36:00,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:00,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:00,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:00,937 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:36:00,937 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:36:00,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:00,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:36:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 391. [2021-03-11 14:36:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4974358974358974) internal successors, (1364), 390 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1364 transitions. [2021-03-11 14:36:00,944 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:00,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:00,944 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1364 transitions. [2021-03-11 14:36:00,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:00,944 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1364 transitions. [2021-03-11 14:36:00,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:00,945 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:00,945 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:00,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-03-11 14:36:00,945 INFO L428 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:00,945 INFO L82 PathProgramCache]: Analyzing trace with hash -762492957, now seen corresponding path program 272 times [2021-03-11 14:36:00,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:00,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784189032] [2021-03-11 14:36:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:00,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:00,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:00,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:00,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:00,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:00,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:00,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:00,988 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:00,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:01,009 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:01,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:01,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784189032] [2021-03-11 14:36:01,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:01,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201331306] [2021-03-11 14:36:01,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:01,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:01,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,061 INFO L87 Difference]: Start difference. First operand 391 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,130 INFO L93 Difference]: Finished difference Result 609 states and 1825 transitions. [2021-03-11 14:36:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,131 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:36:01,131 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:36:01,131 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:01,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:36:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 390. [2021-03-11 14:36:01,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.501285347043702) internal successors, (1362), 389 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1362 transitions. [2021-03-11 14:36:01,138 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:01,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,138 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1362 transitions. [2021-03-11 14:36:01,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,138 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1362 transitions. [2021-03-11 14:36:01,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:01,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,138 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-03-11 14:36:01,138 INFO L428 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1189799021, now seen corresponding path program 273 times [2021-03-11 14:36:01,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110268149] [2021-03-11 14:36:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:01,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:01,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:01,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:01,221 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:01,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110268149] [2021-03-11 14:36:01,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:01,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755330670] [2021-03-11 14:36:01,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:01,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:01,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,245 INFO L87 Difference]: Start difference. First operand 390 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,320 INFO L93 Difference]: Finished difference Result 617 states and 1843 transitions. [2021-03-11 14:36:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:01,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,322 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:36:01,322 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:36:01,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:36:01,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 393. [2021-03-11 14:36:01,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4872448979591835) internal successors, (1367), 392 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1367 transitions. [2021-03-11 14:36:01,328 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1367 transitions. Word has length 22 [2021-03-11 14:36:01,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,329 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1367 transitions. [2021-03-11 14:36:01,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,329 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1367 transitions. [2021-03-11 14:36:01,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:01,329 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,329 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-03-11 14:36:01,329 INFO L428 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1947843677, now seen corresponding path program 274 times [2021-03-11 14:36:01,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590203900] [2021-03-11 14:36:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,357 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:01,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:01,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:01,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:01,412 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:01,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590203900] [2021-03-11 14:36:01,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:01,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83717880] [2021-03-11 14:36:01,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:01,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:01,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,435 INFO L87 Difference]: Start difference. First operand 393 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,521 INFO L93 Difference]: Finished difference Result 619 states and 1844 transitions. [2021-03-11 14:36:01,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:01,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,522 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:36:01,522 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:36:01,522 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:36:01,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 390. [2021-03-11 14:36:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.498714652956298) internal successors, (1361), 389 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1361 transitions. [2021-03-11 14:36:01,529 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1361 transitions. Word has length 22 [2021-03-11 14:36:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,529 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1361 transitions. [2021-03-11 14:36:01,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,529 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1361 transitions. [2021-03-11 14:36:01,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:01,529 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,529 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-03-11 14:36:01,529 INFO L428 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,530 INFO L82 PathProgramCache]: Analyzing trace with hash -256146691, now seen corresponding path program 275 times [2021-03-11 14:36:01,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152761564] [2021-03-11 14:36:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,557 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,571 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:01,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:01,600 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:01,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:01,628 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:01,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152761564] [2021-03-11 14:36:01,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:01,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860771306] [2021-03-11 14:36:01,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:01,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,651 INFO L87 Difference]: Start difference. First operand 390 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,717 INFO L93 Difference]: Finished difference Result 611 states and 1828 transitions. [2021-03-11 14:36:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:01,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:01,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,719 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:36:01,719 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:36:01,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:01,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:36:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 391. [2021-03-11 14:36:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4923076923076923) internal successors, (1362), 390 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1362 transitions. [2021-03-11 14:36:01,725 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,725 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1362 transitions. [2021-03-11 14:36:01,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1362 transitions. [2021-03-11 14:36:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:01,726 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,726 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-03-11 14:36:01,726 INFO L428 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1890024069, now seen corresponding path program 276 times [2021-03-11 14:36:01,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072374057] [2021-03-11 14:36:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,768 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:01,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:01,796 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:01,820 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:01,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:01,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072374057] [2021-03-11 14:36:01,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:01,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:01,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493863161] [2021-03-11 14:36:01,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:01,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:01,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:01,843 INFO L87 Difference]: Start difference. First operand 391 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:01,925 INFO L93 Difference]: Finished difference Result 615 states and 1835 transitions. [2021-03-11 14:36:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:01,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:01,926 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:36:01,926 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:36:01,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:01,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:36:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 389. [2021-03-11 14:36:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.502577319587629) internal successors, (1359), 388 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1359 transitions. [2021-03-11 14:36:01,933 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:01,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:01,933 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1359 transitions. [2021-03-11 14:36:01,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:01,933 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1359 transitions. [2021-03-11 14:36:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:01,933 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:01,934 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:01,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-03-11 14:36:01,934 INFO L428 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:01,934 INFO L82 PathProgramCache]: Analyzing trace with hash -293335917, now seen corresponding path program 277 times [2021-03-11 14:36:01,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:01,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63531635] [2021-03-11 14:36:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:01,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:01,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:01,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:01,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:01,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:01,964 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:01,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:01,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:02,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:02,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:02,031 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:02,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63531635] [2021-03-11 14:36:02,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:02,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175619182] [2021-03-11 14:36:02,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:02,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,054 INFO L87 Difference]: Start difference. First operand 389 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,130 INFO L93 Difference]: Finished difference Result 635 states and 1889 transitions. [2021-03-11 14:36:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,132 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:36:02,132 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:36:02,132 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:36:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 396. [2021-03-11 14:36:02,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.488607594936709) internal successors, (1378), 395 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1378 transitions. [2021-03-11 14:36:02,139 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,139 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1378 transitions. [2021-03-11 14:36:02,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1378 transitions. [2021-03-11 14:36:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:02,139 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,139 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-03-11 14:36:02,139 INFO L428 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash 863988681, now seen corresponding path program 278 times [2021-03-11 14:36:02,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164377983] [2021-03-11 14:36:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:02,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:02,184 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:02,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:02,216 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:02,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:02,241 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:02,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164377983] [2021-03-11 14:36:02,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:02,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365260397] [2021-03-11 14:36:02,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:02,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,265 INFO L87 Difference]: Start difference. First operand 396 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,352 INFO L93 Difference]: Finished difference Result 637 states and 1890 transitions. [2021-03-11 14:36:02,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:02,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:02,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,353 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:36:02,353 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:36:02,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:36:02,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 393. [2021-03-11 14:36:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4948979591836733) internal successors, (1370), 392 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1370 transitions. [2021-03-11 14:36:02,360 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:02,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,360 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1370 transitions. [2021-03-11 14:36:02,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1370 transitions. [2021-03-11 14:36:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:02,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-03-11 14:36:02,361 INFO L428 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1893773771, now seen corresponding path program 279 times [2021-03-11 14:36:02,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322693438] [2021-03-11 14:36:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:02,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:02,406 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:02,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:02,434 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:02,458 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322693438] [2021-03-11 14:36:02,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:02,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004301678] [2021-03-11 14:36:02,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:02,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:02,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,481 INFO L87 Difference]: Start difference. First operand 393 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,564 INFO L93 Difference]: Finished difference Result 639 states and 1893 transitions. [2021-03-11 14:36:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,565 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:36:02,565 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:36:02,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:02,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:36:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 397. [2021-03-11 14:36:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.477272727272727) internal successors, (1377), 396 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1377 transitions. [2021-03-11 14:36:02,572 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:02,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,572 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1377 transitions. [2021-03-11 14:36:02,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1377 transitions. [2021-03-11 14:36:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:02,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,572 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-03-11 14:36:02,572 INFO L428 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,573 INFO L82 PathProgramCache]: Analyzing trace with hash -1820466359, now seen corresponding path program 280 times [2021-03-11 14:36:02,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890470309] [2021-03-11 14:36:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:02,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:02,614 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:02,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:02,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:02,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:02,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:02,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890470309] [2021-03-11 14:36:02,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:02,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504346583] [2021-03-11 14:36:02,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:02,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,694 INFO L87 Difference]: Start difference. First operand 397 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,765 INFO L93 Difference]: Finished difference Result 644 states and 1899 transitions. [2021-03-11 14:36:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:02,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,766 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:36:02,766 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:36:02,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:36:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 393. [2021-03-11 14:36:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4846938775510203) internal successors, (1366), 392 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1366 transitions. [2021-03-11 14:36:02,773 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1366 transitions. Word has length 22 [2021-03-11 14:36:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,773 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1366 transitions. [2021-03-11 14:36:02,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1366 transitions. [2021-03-11 14:36:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:02,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-03-11 14:36:02,774 INFO L428 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1158448843, now seen corresponding path program 281 times [2021-03-11 14:36:02,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088278161] [2021-03-11 14:36:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:02,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:02,815 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:02,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:02,834 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:02,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:02,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:02,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:02,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088278161] [2021-03-11 14:36:02,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:02,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:02,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613237502] [2021-03-11 14:36:02,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:02,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:02,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:02,880 INFO L87 Difference]: Start difference. First operand 393 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:02,959 INFO L93 Difference]: Finished difference Result 645 states and 1903 transitions. [2021-03-11 14:36:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:02,960 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:02,960 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:02,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:02,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 399. [2021-03-11 14:36:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.459798994974874) internal successors, (1377), 398 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1377 transitions. [2021-03-11 14:36:02,967 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:02,967 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1377 transitions. [2021-03-11 14:36:02,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1377 transitions. [2021-03-11 14:36:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:02,968 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:02,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:02,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-03-11 14:36:02,968 INFO L428 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:02,968 INFO L82 PathProgramCache]: Analyzing trace with hash -303142189, now seen corresponding path program 282 times [2021-03-11 14:36:02,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:02,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309046354] [2021-03-11 14:36:02,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:02,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:02,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:02,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:02,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:02,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:02,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:02,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:03,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:03,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:03,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:03,053 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:03,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309046354] [2021-03-11 14:36:03,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:03,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713746016] [2021-03-11 14:36:03,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:03,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:03,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,076 INFO L87 Difference]: Start difference. First operand 399 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,141 INFO L93 Difference]: Finished difference Result 648 states and 1903 transitions. [2021-03-11 14:36:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:03,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,143 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:36:03,143 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:36:03,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:36:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 389. [2021-03-11 14:36:03,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:36:03,149 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:03,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,149 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:36:03,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,149 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:36:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:03,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-03-11 14:36:03,150 INFO L428 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,150 INFO L82 PathProgramCache]: Analyzing trace with hash 186752449, now seen corresponding path program 283 times [2021-03-11 14:36:03,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287595281] [2021-03-11 14:36:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,200 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:03,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:03,229 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:03,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:03,253 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:03,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287595281] [2021-03-11 14:36:03,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:03,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952061287] [2021-03-11 14:36:03,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:03,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:03,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,276 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,342 INFO L93 Difference]: Finished difference Result 621 states and 1849 transitions. [2021-03-11 14:36:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,343 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:36:03,343 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:36:03,343 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:03,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:36:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 392. [2021-03-11 14:36:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4884910485933505) internal successors, (1364), 391 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1364 transitions. [2021-03-11 14:36:03,350 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:03,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,350 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1364 transitions. [2021-03-11 14:36:03,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1364 transitions. [2021-03-11 14:36:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:03,350 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,350 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-03-11 14:36:03,350 INFO L428 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1962044087, now seen corresponding path program 284 times [2021-03-11 14:36:03,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604031690] [2021-03-11 14:36:03,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,400 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:03,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:03,429 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:03,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:03,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:03,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604031690] [2021-03-11 14:36:03,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:03,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671997255] [2021-03-11 14:36:03,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:03,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,476 INFO L87 Difference]: Start difference. First operand 392 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,550 INFO L93 Difference]: Finished difference Result 625 states and 1856 transitions. [2021-03-11 14:36:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:03,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,551 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:36:03,551 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:36:03,551 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:03,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:36:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 391. [2021-03-11 14:36:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4923076923076923) internal successors, (1362), 390 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1362 transitions. [2021-03-11 14:36:03,558 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:03,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,558 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1362 transitions. [2021-03-11 14:36:03,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,558 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1362 transitions. [2021-03-11 14:36:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:03,558 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,558 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-03-11 14:36:03,558 INFO L428 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1413685405, now seen corresponding path program 285 times [2021-03-11 14:36:03,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897616331] [2021-03-11 14:36:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,585 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:03,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:03,633 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:03,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:03,659 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:03,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897616331] [2021-03-11 14:36:03,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:03,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108129045] [2021-03-11 14:36:03,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:03,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:03,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,683 INFO L87 Difference]: Start difference. First operand 391 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,752 INFO L93 Difference]: Finished difference Result 625 states and 1855 transitions. [2021-03-11 14:36:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:03,752 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:03,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,753 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:36:03,753 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:36:03,753 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:36:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 393. [2021-03-11 14:36:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.482142857142857) internal successors, (1365), 392 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1365 transitions. [2021-03-11 14:36:03,760 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1365 transitions. Word has length 22 [2021-03-11 14:36:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,760 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1365 transitions. [2021-03-11 14:36:03,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1365 transitions. [2021-03-11 14:36:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:03,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,760 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-03-11 14:36:03,760 INFO L428 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1951540983, now seen corresponding path program 286 times [2021-03-11 14:36:03,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661445750] [2021-03-11 14:36:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,788 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:03,810 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:03,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:03,837 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:03,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:03,861 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:03,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:03,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661445750] [2021-03-11 14:36:03,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:03,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:03,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545331936] [2021-03-11 14:36:03,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:03,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:03,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:03,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:03,884 INFO L87 Difference]: Start difference. First operand 393 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:03,952 INFO L93 Difference]: Finished difference Result 632 states and 1867 transitions. [2021-03-11 14:36:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:03,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:03,953 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:36:03,954 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:36:03,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:36:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 391. [2021-03-11 14:36:03,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:36:03,960 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:36:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:03,960 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:36:03,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:36:03,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:03,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:03,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:03,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-03-11 14:36:03,961 INFO L428 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:03,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1455697821, now seen corresponding path program 287 times [2021-03-11 14:36:03,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:03,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460338864] [2021-03-11 14:36:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:03,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:03,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:03,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:03,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:03,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:03,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:03,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:04,016 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,035 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:04,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:04,059 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:04,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460338864] [2021-03-11 14:36:04,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433153155] [2021-03-11 14:36:04,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:04,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:04,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,082 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,161 INFO L93 Difference]: Finished difference Result 637 states and 1881 transitions. [2021-03-11 14:36:04,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,162 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:36:04,162 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:36:04,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:36:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 397. [2021-03-11 14:36:04,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.462121212121212) internal successors, (1371), 396 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1371 transitions. [2021-03-11 14:36:04,169 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,169 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1371 transitions. [2021-03-11 14:36:04,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1371 transitions. [2021-03-11 14:36:04,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:04,170 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,170 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-03-11 14:36:04,170 INFO L428 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,170 INFO L82 PathProgramCache]: Analyzing trace with hash 155243137, now seen corresponding path program 288 times [2021-03-11 14:36:04,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147442855] [2021-03-11 14:36:04,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:04,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:04,222 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,241 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:04,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:04,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:04,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147442855] [2021-03-11 14:36:04,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:04,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518659477] [2021-03-11 14:36:04,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:04,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:04,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,288 INFO L87 Difference]: Start difference. First operand 397 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,353 INFO L93 Difference]: Finished difference Result 640 states and 1881 transitions. [2021-03-11 14:36:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:04,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,355 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:36:04,355 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:36:04,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:36:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 387. [2021-03-11 14:36:04,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5025906735751295) internal successors, (1352), 386 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1352 transitions. [2021-03-11 14:36:04,361 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1352 transitions. Word has length 22 [2021-03-11 14:36:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,361 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1352 transitions. [2021-03-11 14:36:04,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1352 transitions. [2021-03-11 14:36:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:04,362 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-03-11 14:36:04,362 INFO L428 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash 205602575, now seen corresponding path program 289 times [2021-03-11 14:36:04,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852752612] [2021-03-11 14:36:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:04,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:04,413 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:04,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:04,455 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:04,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852752612] [2021-03-11 14:36:04,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:04,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664130460] [2021-03-11 14:36:04,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:04,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:04,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,478 INFO L87 Difference]: Start difference. First operand 387 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,565 INFO L93 Difference]: Finished difference Result 603 states and 1810 transitions. [2021-03-11 14:36:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,566 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:36:04,566 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:36:04,566 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:04,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:36:04,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 390. [2021-03-11 14:36:04,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4961439588688945) internal successors, (1360), 389 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1360 transitions. [2021-03-11 14:36:04,573 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1360 transitions. Word has length 22 [2021-03-11 14:36:04,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,573 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1360 transitions. [2021-03-11 14:36:04,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1360 transitions. [2021-03-11 14:36:04,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:04,574 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,574 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,574 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-03-11 14:36:04,574 INFO L428 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,574 INFO L82 PathProgramCache]: Analyzing trace with hash 360094717, now seen corresponding path program 290 times [2021-03-11 14:36:04,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172185343] [2021-03-11 14:36:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:04,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:04,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:04,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:04,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:04,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:04,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:04,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172185343] [2021-03-11 14:36:04,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:04,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923623079] [2021-03-11 14:36:04,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:04,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:04,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,691 INFO L87 Difference]: Start difference. First operand 390 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,765 INFO L93 Difference]: Finished difference Result 601 states and 1805 transitions. [2021-03-11 14:36:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:04,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:04,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,767 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:36:04,767 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:36:04,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:36:04,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 389. [2021-03-11 14:36:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.5) internal successors, (1358), 388 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1358 transitions. [2021-03-11 14:36:04,773 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1358 transitions. Word has length 22 [2021-03-11 14:36:04,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,773 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1358 transitions. [2021-03-11 14:36:04,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,773 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1358 transitions. [2021-03-11 14:36:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:04,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-03-11 14:36:04,774 INFO L428 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1299694163, now seen corresponding path program 291 times [2021-03-11 14:36:04,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603598306] [2021-03-11 14:36:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:04,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:04,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:04,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:04,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:04,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:04,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:04,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:04,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:04,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:04,854 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:04,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:04,877 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:04,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:04,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603598306] [2021-03-11 14:36:04,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:04,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:04,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088484056] [2021-03-11 14:36:04,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:04,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:04,900 INFO L87 Difference]: Start difference. First operand 389 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:04,987 INFO L93 Difference]: Finished difference Result 610 states and 1825 transitions. [2021-03-11 14:36:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:04,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:04,989 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:36:04,989 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:36:04,989 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:36:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 392. [2021-03-11 14:36:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4859335038363173) internal successors, (1363), 391 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1363 transitions. [2021-03-11 14:36:04,995 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:04,995 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1363 transitions. [2021-03-11 14:36:04,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1363 transitions. [2021-03-11 14:36:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:04,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:04,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:04,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-03-11 14:36:04,996 INFO L428 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 247882941, now seen corresponding path program 292 times [2021-03-11 14:36:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848027337] [2021-03-11 14:36:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:05,024 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:05,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:05,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:05,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:05,077 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:05,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:05,100 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:05,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:05,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848027337] [2021-03-11 14:36:05,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:05,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482405214] [2021-03-11 14:36:05,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:05,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:05,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,123 INFO L87 Difference]: Start difference. First operand 392 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,206 INFO L93 Difference]: Finished difference Result 613 states and 1828 transitions. [2021-03-11 14:36:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:05,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,207 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:36:05,207 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:36:05,208 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:36:05,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 389. [2021-03-11 14:36:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:36:05,214 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,214 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:36:05,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:36:05,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:05,215 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,215 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-03-11 14:36:05,215 INFO L428 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,215 INFO L82 PathProgramCache]: Analyzing trace with hash -146251549, now seen corresponding path program 293 times [2021-03-11 14:36:05,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212606778] [2021-03-11 14:36:05,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:05,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:05,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:05,270 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:05,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:05,299 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:05,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:05,324 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:05,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212606778] [2021-03-11 14:36:05,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:05,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492219541] [2021-03-11 14:36:05,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:05,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:05,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,350 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,411 INFO L93 Difference]: Finished difference Result 604 states and 1810 transitions. [2021-03-11 14:36:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,412 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:36:05,412 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:36:05,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:36:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 390. [2021-03-11 14:36:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4910025706940875) internal successors, (1358), 389 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1358 transitions. [2021-03-11 14:36:05,418 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1358 transitions. Word has length 22 [2021-03-11 14:36:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,419 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1358 transitions. [2021-03-11 14:36:05,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1358 transitions. [2021-03-11 14:36:05,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:05,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-03-11 14:36:05,419 INFO L428 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1219336929, now seen corresponding path program 294 times [2021-03-11 14:36:05,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593097093] [2021-03-11 14:36:05,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:05,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:05,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:05,470 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:05,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:05,498 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:05,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:05,522 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:05,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593097093] [2021-03-11 14:36:05,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:05,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666870210] [2021-03-11 14:36:05,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,545 INFO L87 Difference]: Start difference. First operand 390 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,633 INFO L93 Difference]: Finished difference Result 609 states and 1819 transitions. [2021-03-11 14:36:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,634 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:36:05,634 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:36:05,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:36:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 388. [2021-03-11 14:36:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.501291989664083) internal successors, (1355), 387 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1355 transitions. [2021-03-11 14:36:05,641 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1355 transitions. Word has length 22 [2021-03-11 14:36:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,641 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1355 transitions. [2021-03-11 14:36:05,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,641 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1355 transitions. [2021-03-11 14:36:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:05,641 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,641 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-03-11 14:36:05,642 INFO L428 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1534299995, now seen corresponding path program 295 times [2021-03-11 14:36:05,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220748635] [2021-03-11 14:36:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:05,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,685 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,704 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:05,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:05,727 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:05,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220748635] [2021-03-11 14:36:05,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:05,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017908381] [2021-03-11 14:36:05,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:05,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:05,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,751 INFO L87 Difference]: Start difference. First operand 388 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:05,840 INFO L93 Difference]: Finished difference Result 602 states and 1807 transitions. [2021-03-11 14:36:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:05,841 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:36:05,841 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:36:05,841 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:05,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:36:05,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 390. [2021-03-11 14:36:05,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.493573264781491) internal successors, (1359), 389 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1359 transitions. [2021-03-11 14:36:05,847 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:05,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:05,847 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1359 transitions. [2021-03-11 14:36:05,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1359 transitions. [2021-03-11 14:36:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:05,848 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:05,848 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:05,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-03-11 14:36:05,848 INFO L428 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:05,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:05,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1688792137, now seen corresponding path program 296 times [2021-03-11 14:36:05,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:05,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71398037] [2021-03-11 14:36:05,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:05,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:05,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:05,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:05,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:05,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:05,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:05,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:05,891 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:05,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:05,911 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:05,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:05,937 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:05,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:05,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:05,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71398037] [2021-03-11 14:36:05,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:05,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:05,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073457180] [2021-03-11 14:36:05,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:05,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:05,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:05,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:05,960 INFO L87 Difference]: Start difference. First operand 390 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,027 INFO L93 Difference]: Finished difference Result 600 states and 1802 transitions. [2021-03-11 14:36:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:06,027 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,028 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:36:06,028 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:36:06,028 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:36:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 389. [2021-03-11 14:36:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.497422680412371) internal successors, (1357), 388 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1357 transitions. [2021-03-11 14:36:06,034 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,035 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1357 transitions. [2021-03-11 14:36:06,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,035 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1357 transitions. [2021-03-11 14:36:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:06,035 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,035 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2021-03-11 14:36:06,035 INFO L428 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,035 INFO L82 PathProgramCache]: Analyzing trace with hash -653883181, now seen corresponding path program 297 times [2021-03-11 14:36:06,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247946187] [2021-03-11 14:36:06,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:06,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:06,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:06,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:06,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:06,095 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:06,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:06,119 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:06,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247946187] [2021-03-11 14:36:06,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:06,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725683768] [2021-03-11 14:36:06,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:06,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:06,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,142 INFO L87 Difference]: Start difference. First operand 389 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,229 INFO L93 Difference]: Finished difference Result 608 states and 1820 transitions. [2021-03-11 14:36:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:06,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:06,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,231 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:36:06,231 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:36:06,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:06,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:36:06,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 392. [2021-03-11 14:36:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.483375959079284) internal successors, (1362), 391 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1362 transitions. [2021-03-11 14:36:06,237 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,237 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1362 transitions. [2021-03-11 14:36:06,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1362 transitions. [2021-03-11 14:36:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:06,238 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2021-03-11 14:36:06,238 INFO L428 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,238 INFO L82 PathProgramCache]: Analyzing trace with hash 503441417, now seen corresponding path program 298 times [2021-03-11 14:36:06,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045500025] [2021-03-11 14:36:06,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:06,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:06,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:06,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:06,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:06,298 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:06,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:06,322 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:06,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045500025] [2021-03-11 14:36:06,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:06,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124742076] [2021-03-11 14:36:06,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:06,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:06,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,345 INFO L87 Difference]: Start difference. First operand 392 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,423 INFO L93 Difference]: Finished difference Result 610 states and 1821 transitions. [2021-03-11 14:36:06,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:06,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,424 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:36:06,424 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:36:06,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:36:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 389. [2021-03-11 14:36:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4948453608247423) internal successors, (1356), 388 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1356 transitions. [2021-03-11 14:36:06,430 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1356 transitions. Word has length 22 [2021-03-11 14:36:06,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,431 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1356 transitions. [2021-03-11 14:36:06,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1356 transitions. [2021-03-11 14:36:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:06,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2021-03-11 14:36:06,431 INFO L428 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2099828893, now seen corresponding path program 299 times [2021-03-11 14:36:06,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495123184] [2021-03-11 14:36:06,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:06,459 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:06,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:06,473 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:06,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:06,503 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:06,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:06,527 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:06,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495123184] [2021-03-11 14:36:06,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:06,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797202690] [2021-03-11 14:36:06,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:06,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:06,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,551 INFO L87 Difference]: Start difference. First operand 389 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,621 INFO L93 Difference]: Finished difference Result 602 states and 1805 transitions. [2021-03-11 14:36:06,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:06,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,622 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:36:06,622 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:36:06,623 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:06,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:36:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 390. [2021-03-11 14:36:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:36:06,629 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,629 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:36:06,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:36:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:06,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2021-03-11 14:36:06,630 INFO L428 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,630 INFO L82 PathProgramCache]: Analyzing trace with hash 46341867, now seen corresponding path program 300 times [2021-03-11 14:36:06,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021820323] [2021-03-11 14:36:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:06,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:06,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:06,672 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:06,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:06,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:06,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:06,725 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:06,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021820323] [2021-03-11 14:36:06,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:06,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92341517] [2021-03-11 14:36:06,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:06,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,749 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:06,831 INFO L93 Difference]: Finished difference Result 606 states and 1812 transitions. [2021-03-11 14:36:06,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:06,832 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:36:06,832 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:36:06,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:06,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:36:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 388. [2021-03-11 14:36:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.498708010335917) internal successors, (1354), 387 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1354 transitions. [2021-03-11 14:36:06,842 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1354 transitions. Word has length 22 [2021-03-11 14:36:06,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:06,842 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1354 transitions. [2021-03-11 14:36:06,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:06,842 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1354 transitions. [2021-03-11 14:36:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:06,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:06,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:06,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2021-03-11 14:36:06,843 INFO L428 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:06,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:06,843 INFO L82 PathProgramCache]: Analyzing trace with hash -2109474853, now seen corresponding path program 301 times [2021-03-11 14:36:06,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:06,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153119431] [2021-03-11 14:36:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:06,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:06,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:06,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:06,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:06,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:06,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:06,897 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:06,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:06,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:06,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:06,954 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:06,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:06,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153119431] [2021-03-11 14:36:06,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:06,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:06,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961277130] [2021-03-11 14:36:06,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:06,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:06,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:06,979 INFO L87 Difference]: Start difference. First operand 388 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,063 INFO L93 Difference]: Finished difference Result 622 states and 1858 transitions. [2021-03-11 14:36:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,065 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:36:07,065 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:36:07,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:07,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:36:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 394. [2021-03-11 14:36:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.486005089058524) internal successors, (1370), 393 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1370 transitions. [2021-03-11 14:36:07,071 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:07,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,071 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1370 transitions. [2021-03-11 14:36:07,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,071 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1370 transitions. [2021-03-11 14:36:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:07,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2021-03-11 14:36:07,072 INFO L428 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1133681221, now seen corresponding path program 302 times [2021-03-11 14:36:07,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857043918] [2021-03-11 14:36:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:07,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:07,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:07,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:07,113 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:07,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:07,143 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:07,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:07,167 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:07,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857043918] [2021-03-11 14:36:07,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:07,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973661] [2021-03-11 14:36:07,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:07,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,190 INFO L87 Difference]: Start difference. First operand 394 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,272 INFO L93 Difference]: Finished difference Result 625 states and 1861 transitions. [2021-03-11 14:36:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:07,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:07,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,273 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:36:07,273 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:36:07,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:07,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:36:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 391. [2021-03-11 14:36:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4923076923076923) internal successors, (1362), 390 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1362 transitions. [2021-03-11 14:36:07,279 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,279 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1362 transitions. [2021-03-11 14:36:07,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1362 transitions. [2021-03-11 14:36:07,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:07,280 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,280 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2021-03-11 14:36:07,280 INFO L428 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1096782321, now seen corresponding path program 303 times [2021-03-11 14:36:07,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816265513] [2021-03-11 14:36:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:07,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:07,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:07,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:07,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:07,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:07,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:07,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:07,368 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:07,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816265513] [2021-03-11 14:36:07,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:07,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761170645] [2021-03-11 14:36:07,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:07,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:07,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,391 INFO L87 Difference]: Start difference. First operand 391 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,466 INFO L93 Difference]: Finished difference Result 621 states and 1853 transitions. [2021-03-11 14:36:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:07,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:07,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,467 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:36:07,467 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:36:07,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 129.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:36:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 394. [2021-03-11 14:36:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4783715012722647) internal successors, (1367), 393 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1367 transitions. [2021-03-11 14:36:07,474 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1367 transitions. Word has length 22 [2021-03-11 14:36:07,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,474 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1367 transitions. [2021-03-11 14:36:07,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1367 transitions. [2021-03-11 14:36:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:07,474 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,474 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2021-03-11 14:36:07,475 INFO L428 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash 60542277, now seen corresponding path program 304 times [2021-03-11 14:36:07,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025922907] [2021-03-11 14:36:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:07,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:07,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:07,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:07,516 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:07,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:07,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:07,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:07,558 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:07,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:07,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025922907] [2021-03-11 14:36:07,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:07,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087331675] [2021-03-11 14:36:07,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:07,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:07,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,583 INFO L87 Difference]: Start difference. First operand 394 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,667 INFO L93 Difference]: Finished difference Result 623 states and 1854 transitions. [2021-03-11 14:36:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:07,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,668 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:36:07,668 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:36:07,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:36:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 391. [2021-03-11 14:36:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4846153846153847) internal successors, (1359), 390 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1359 transitions. [2021-03-11 14:36:07,675 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,675 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1359 transitions. [2021-03-11 14:36:07,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1359 transitions. [2021-03-11 14:36:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:07,676 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,676 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2021-03-11 14:36:07,676 INFO L428 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1643961905, now seen corresponding path program 305 times [2021-03-11 14:36:07,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007641970] [2021-03-11 14:36:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:07,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:07,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:07,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:07,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,736 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:07,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:07,760 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:07,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007641970] [2021-03-11 14:36:07,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:07,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487533454] [2021-03-11 14:36:07,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:07,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:07,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,784 INFO L87 Difference]: Start difference. First operand 391 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:07,864 INFO L93 Difference]: Finished difference Result 629 states and 1868 transitions. [2021-03-11 14:36:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:07,866 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:36:07,866 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:36:07,866 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:36:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 396. [2021-03-11 14:36:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.463291139240506) internal successors, (1368), 395 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1368 transitions. [2021-03-11 14:36:07,872 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:07,872 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1368 transitions. [2021-03-11 14:36:07,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:07,873 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1368 transitions. [2021-03-11 14:36:07,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:07,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:07,873 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:07,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2021-03-11 14:36:07,873 INFO L428 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:07,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:07,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1814132763, now seen corresponding path program 306 times [2021-03-11 14:36:07,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:07,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508631408] [2021-03-11 14:36:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:07,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:07,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:07,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:07,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:07,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:07,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:07,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:07,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:07,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:07,938 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:07,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:07,962 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:07,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:07,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508631408] [2021-03-11 14:36:07,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:07,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:07,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797456321] [2021-03-11 14:36:07,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:07,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:07,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:07,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:07,986 INFO L87 Difference]: Start difference. First operand 396 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,069 INFO L93 Difference]: Finished difference Result 628 states and 1861 transitions. [2021-03-11 14:36:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:08,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,070 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:36:08,071 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:36:08,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:36:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 388. [2021-03-11 14:36:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.496124031007752) internal successors, (1353), 387 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1353 transitions. [2021-03-11 14:36:08,077 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1353 transitions. Word has length 22 [2021-03-11 14:36:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,077 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1353 transitions. [2021-03-11 14:36:08,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1353 transitions. [2021-03-11 14:36:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:08,078 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,078 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2021-03-11 14:36:08,078 INFO L428 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1629386487, now seen corresponding path program 307 times [2021-03-11 14:36:08,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047095371] [2021-03-11 14:36:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:08,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:08,106 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,128 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:08,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:08,155 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:08,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:08,180 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:08,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047095371] [2021-03-11 14:36:08,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:08,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265114870] [2021-03-11 14:36:08,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:08,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:08,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,203 INFO L87 Difference]: Start difference. First operand 388 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,270 INFO L93 Difference]: Finished difference Result 608 states and 1819 transitions. [2021-03-11 14:36:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:08,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:08,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,272 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:36:08,272 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:36:08,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:08,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:36:08,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 390. [2021-03-11 14:36:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:36:08,278 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,278 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:36:08,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:36:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:08,279 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,279 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2021-03-11 14:36:08,279 INFO L428 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1592495429, now seen corresponding path program 308 times [2021-03-11 14:36:08,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384264818] [2021-03-11 14:36:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:08,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:08,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,329 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:08,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:08,356 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:08,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:08,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:08,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384264818] [2021-03-11 14:36:08,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:08,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574483988] [2021-03-11 14:36:08,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:08,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,403 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,483 INFO L93 Difference]: Finished difference Result 613 states and 1828 transitions. [2021-03-11 14:36:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:08,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,484 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:36:08,484 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:36:08,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:36:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 389. [2021-03-11 14:36:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4922680412371134) internal successors, (1355), 388 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1355 transitions. [2021-03-11 14:36:08,490 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1355 transitions. Word has length 22 [2021-03-11 14:36:08,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,491 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1355 transitions. [2021-03-11 14:36:08,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1355 transitions. [2021-03-11 14:36:08,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:08,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2021-03-11 14:36:08,491 INFO L428 AbstractCegarLoop]: === Iteration 315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,492 INFO L82 PathProgramCache]: Analyzing trace with hash -616693955, now seen corresponding path program 309 times [2021-03-11 14:36:08,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892666296] [2021-03-11 14:36:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:08,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:08,519 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:08,570 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:08,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:08,595 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:08,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892666296] [2021-03-11 14:36:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:08,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56880661] [2021-03-11 14:36:08,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:08,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:08,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,618 INFO L87 Difference]: Start difference. First operand 389 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,681 INFO L93 Difference]: Finished difference Result 607 states and 1816 transitions. [2021-03-11 14:36:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:08,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,682 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:36:08,682 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:36:08,683 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:36:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 390. [2021-03-11 14:36:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.48586118251928) internal successors, (1356), 389 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1356 transitions. [2021-03-11 14:36:08,689 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1356 transitions. Word has length 22 [2021-03-11 14:36:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,689 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1356 transitions. [2021-03-11 14:36:08,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1356 transitions. [2021-03-11 14:36:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:08,690 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,690 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2021-03-11 14:36:08,690 INFO L428 AbstractCegarLoop]: === Iteration 316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1529476805, now seen corresponding path program 310 times [2021-03-11 14:36:08,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495883512] [2021-03-11 14:36:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:08,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:08,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,740 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:08,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:08,769 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:08,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:08,793 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:08,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:08,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495883512] [2021-03-11 14:36:08,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:08,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:08,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439098953] [2021-03-11 14:36:08,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:08,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:08,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:08,816 INFO L87 Difference]: Start difference. First operand 390 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:08,899 INFO L93 Difference]: Finished difference Result 611 states and 1823 transitions. [2021-03-11 14:36:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:08,900 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:36:08,900 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:36:08,900 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:08,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:36:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 389. [2021-03-11 14:36:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4896907216494846) internal successors, (1354), 388 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1354 transitions. [2021-03-11 14:36:08,906 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1354 transitions. Word has length 22 [2021-03-11 14:36:08,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:08,907 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1354 transitions. [2021-03-11 14:36:08,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:08,907 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1354 transitions. [2021-03-11 14:36:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:08,907 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:08,907 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:08,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2021-03-11 14:36:08,907 INFO L428 AbstractCegarLoop]: === Iteration 317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:08,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:08,907 INFO L82 PathProgramCache]: Analyzing trace with hash -595687747, now seen corresponding path program 311 times [2021-03-11 14:36:08,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:08,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347102664] [2021-03-11 14:36:08,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:08,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:08,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:08,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:08,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:08,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:08,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:08,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:08,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:08,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:08,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:08,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:09,003 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:09,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347102664] [2021-03-11 14:36:09,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:09,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824170309] [2021-03-11 14:36:09,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:09,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:09,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,026 INFO L87 Difference]: Start difference. First operand 389 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,107 INFO L93 Difference]: Finished difference Result 621 states and 1847 transitions. [2021-03-11 14:36:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:09,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,108 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:36:09,108 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:36:09,108 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:09,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:36:09,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 394. [2021-03-11 14:36:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4681933842239188) internal successors, (1363), 393 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1363 transitions. [2021-03-11 14:36:09,115 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:09,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,115 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1363 transitions. [2021-03-11 14:36:09,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,115 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1363 transitions. [2021-03-11 14:36:09,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:09,115 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,115 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2021-03-11 14:36:09,116 INFO L428 AbstractCegarLoop]: === Iteration 318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1671398903, now seen corresponding path program 312 times [2021-03-11 14:36:09,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459756296] [2021-03-11 14:36:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:09,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:09,144 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:09,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:09,166 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:09,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:09,185 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:09,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:09,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:09,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459756296] [2021-03-11 14:36:09,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:09,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564043770] [2021-03-11 14:36:09,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:09,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,232 INFO L87 Difference]: Start difference. First operand 394 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,314 INFO L93 Difference]: Finished difference Result 620 states and 1840 transitions. [2021-03-11 14:36:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:09,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,316 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:36:09,316 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:36:09,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:09,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:36:09,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 387. [2021-03-11 14:36:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.5) internal successors, (1351), 386 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1351 transitions. [2021-03-11 14:36:09,322 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1351 transitions. Word has length 22 [2021-03-11 14:36:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,322 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1351 transitions. [2021-03-11 14:36:09,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1351 transitions. [2021-03-11 14:36:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:09,323 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,323 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2021-03-11 14:36:09,323 INFO L428 AbstractCegarLoop]: === Iteration 319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,323 INFO L82 PathProgramCache]: Analyzing trace with hash -842017675, now seen corresponding path program 313 times [2021-03-11 14:36:09,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959583147] [2021-03-11 14:36:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:09,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:09,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:09,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:09,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,395 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:09,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:09,419 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:09,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:09,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959583147] [2021-03-11 14:36:09,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:09,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406437055] [2021-03-11 14:36:09,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:09,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:09,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,442 INFO L87 Difference]: Start difference. First operand 387 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,533 INFO L93 Difference]: Finished difference Result 663 states and 1977 transitions. [2021-03-11 14:36:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:09,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,535 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:36:09,535 INFO L226 Difference]: Without dead ends: 652 [2021-03-11 14:36:09,535 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-03-11 14:36:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 399. [2021-03-11 14:36:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.492462311557789) internal successors, (1390), 398 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1390 transitions. [2021-03-11 14:36:09,542 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1390 transitions. Word has length 22 [2021-03-11 14:36:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,542 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1390 transitions. [2021-03-11 14:36:09,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1390 transitions. [2021-03-11 14:36:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:09,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2021-03-11 14:36:09,542 INFO L428 AbstractCegarLoop]: === Iteration 320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1893828897, now seen corresponding path program 314 times [2021-03-11 14:36:09,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779312695] [2021-03-11 14:36:09,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:09,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:09,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:09,585 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:09,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:09,615 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:09,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:09,639 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:09,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779312695] [2021-03-11 14:36:09,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:09,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506675294] [2021-03-11 14:36:09,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:09,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,670 INFO L87 Difference]: Start difference. First operand 399 states and 1390 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,762 INFO L93 Difference]: Finished difference Result 666 states and 1980 transitions. [2021-03-11 14:36:09,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:09,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:09,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,763 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:36:09,764 INFO L226 Difference]: Without dead ends: 649 [2021-03-11 14:36:09,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-03-11 14:36:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 396. [2021-03-11 14:36:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.49873417721519) internal successors, (1382), 395 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1382 transitions. [2021-03-11 14:36:09,770 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1382 transitions. Word has length 22 [2021-03-11 14:36:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,770 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1382 transitions. [2021-03-11 14:36:09,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1382 transitions. [2021-03-11 14:36:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:09,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,771 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2021-03-11 14:36:09,771 INFO L428 AbstractCegarLoop]: === Iteration 321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,771 INFO L82 PathProgramCache]: Analyzing trace with hash 170674857, now seen corresponding path program 315 times [2021-03-11 14:36:09,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633448644] [2021-03-11 14:36:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:09,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:09,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:09,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:09,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:09,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:09,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:09,832 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:09,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:09,855 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:09,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:09,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633448644] [2021-03-11 14:36:09,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:09,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:09,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300004774] [2021-03-11 14:36:09,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:09,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:09,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:09,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:09,879 INFO L87 Difference]: Start difference. First operand 396 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:09,970 INFO L93 Difference]: Finished difference Result 662 states and 1972 transitions. [2021-03-11 14:36:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:09,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:09,971 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:36:09,971 INFO L226 Difference]: Without dead ends: 651 [2021-03-11 14:36:09,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-03-11 14:36:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 399. [2021-03-11 14:36:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4849246231155777) internal successors, (1387), 398 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1387 transitions. [2021-03-11 14:36:09,981 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1387 transitions. Word has length 22 [2021-03-11 14:36:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:09,981 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1387 transitions. [2021-03-11 14:36:09,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1387 transitions. [2021-03-11 14:36:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:09,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:09,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:09,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2021-03-11 14:36:09,982 INFO L428 AbstractCegarLoop]: === Iteration 322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1327999455, now seen corresponding path program 316 times [2021-03-11 14:36:09,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:09,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548823277] [2021-03-11 14:36:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:09,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:09,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:09,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:10,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:10,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:10,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:10,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:10,043 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:10,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:10,067 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:10,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548823277] [2021-03-11 14:36:10,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:10,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780931940] [2021-03-11 14:36:10,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:10,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,090 INFO L87 Difference]: Start difference. First operand 399 states and 1387 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,184 INFO L93 Difference]: Finished difference Result 664 states and 1973 transitions. [2021-03-11 14:36:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:10,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,185 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:36:10,185 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:36:10,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:10,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:36:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 396. [2021-03-11 14:36:10,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.491139240506329) internal successors, (1379), 395 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1379 transitions. [2021-03-11 14:36:10,192 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1379 transitions. Word has length 22 [2021-03-11 14:36:10,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,192 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1379 transitions. [2021-03-11 14:36:10,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1379 transitions. [2021-03-11 14:36:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:10,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2021-03-11 14:36:10,192 INFO L428 AbstractCegarLoop]: === Iteration 323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -376504727, now seen corresponding path program 317 times [2021-03-11 14:36:10,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467785914] [2021-03-11 14:36:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:10,210 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:10,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:10,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:10,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:10,254 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:10,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:10,278 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:10,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467785914] [2021-03-11 14:36:10,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:10,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924440674] [2021-03-11 14:36:10,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:10,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,301 INFO L87 Difference]: Start difference. First operand 396 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,398 INFO L93 Difference]: Finished difference Result 670 states and 1987 transitions. [2021-03-11 14:36:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,399 INFO L225 Difference]: With dead ends: 670 [2021-03-11 14:36:10,399 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:10,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:10,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 401. [2021-03-11 14:36:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.47) internal successors, (1388), 400 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1388 transitions. [2021-03-11 14:36:10,406 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1388 transitions. Word has length 22 [2021-03-11 14:36:10,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,406 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1388 transitions. [2021-03-11 14:36:10,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,406 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1388 transitions. [2021-03-11 14:36:10,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:10,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2021-03-11 14:36:10,407 INFO L428 AbstractCegarLoop]: === Iteration 324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1213377355, now seen corresponding path program 318 times [2021-03-11 14:36:10,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375414951] [2021-03-11 14:36:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:10,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:10,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:10,449 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:10,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:10,468 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:10,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:10,492 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:10,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375414951] [2021-03-11 14:36:10,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:10,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697058282] [2021-03-11 14:36:10,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:10,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:10,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,515 INFO L87 Difference]: Start difference. First operand 401 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,599 INFO L93 Difference]: Finished difference Result 669 states and 1980 transitions. [2021-03-11 14:36:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:10,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,601 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:36:10,601 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:36:10,601 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:10,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:36:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 393. [2021-03-11 14:36:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.497448979591837) internal successors, (1371), 392 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1371 transitions. [2021-03-11 14:36:10,608 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,608 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1371 transitions. [2021-03-11 14:36:10,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1371 transitions. [2021-03-11 14:36:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:10,608 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,608 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2021-03-11 14:36:10,608 INFO L428 AbstractCegarLoop]: === Iteration 325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1084016403, now seen corresponding path program 319 times [2021-03-11 14:36:10,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077541375] [2021-03-11 14:36:10,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:10,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:10,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:10,660 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:10,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:10,691 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:10,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:10,714 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:10,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077541375] [2021-03-11 14:36:10,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:10,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068201009] [2021-03-11 14:36:10,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:10,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:10,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,738 INFO L87 Difference]: Start difference. First operand 393 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:10,831 INFO L93 Difference]: Finished difference Result 672 states and 1992 transitions. [2021-03-11 14:36:10,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:10,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:10,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:10,832 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:36:10,832 INFO L226 Difference]: Without dead ends: 661 [2021-03-11 14:36:10,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:10,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-11 14:36:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 401. [2021-03-11 14:36:10,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.48) internal successors, (1392), 400 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1392 transitions. [2021-03-11 14:36:10,839 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1392 transitions. Word has length 22 [2021-03-11 14:36:10,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:10,839 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1392 transitions. [2021-03-11 14:36:10,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:10,839 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1392 transitions. [2021-03-11 14:36:10,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:10,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:10,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:10,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2021-03-11 14:36:10,840 INFO L428 AbstractCegarLoop]: === Iteration 326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:10,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:10,840 INFO L82 PathProgramCache]: Analyzing trace with hash 32205181, now seen corresponding path program 320 times [2021-03-11 14:36:10,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:10,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109938353] [2021-03-11 14:36:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:10,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:10,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:10,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:10,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:10,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:10,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:10,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:10,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:10,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:10,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:10,923 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:10,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:10,947 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:10,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:10,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109938353] [2021-03-11 14:36:10,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:10,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:10,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693158537] [2021-03-11 14:36:10,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:10,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:10,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:10,971 INFO L87 Difference]: Start difference. First operand 401 states and 1392 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:11,066 INFO L93 Difference]: Finished difference Result 675 states and 1995 transitions. [2021-03-11 14:36:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:11,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:11,067 INFO L225 Difference]: With dead ends: 675 [2021-03-11 14:36:11,067 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:36:11,067 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:11,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:36:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 398. [2021-03-11 14:36:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.486146095717884) internal successors, (1384), 397 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1384 transitions. [2021-03-11 14:36:11,074 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1384 transitions. Word has length 22 [2021-03-11 14:36:11,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:11,074 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1384 transitions. [2021-03-11 14:36:11,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1384 transitions. [2021-03-11 14:36:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:11,075 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:11,075 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:11,075 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2021-03-11 14:36:11,075 INFO L428 AbstractCegarLoop]: === Iteration 327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:11,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:11,075 INFO L82 PathProgramCache]: Analyzing trace with hash 496271081, now seen corresponding path program 321 times [2021-03-11 14:36:11,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:11,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704588943] [2021-03-11 14:36:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:11,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:11,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:11,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:11,093 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:11,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:11,103 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:11,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:11,127 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:11,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:11,160 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:11,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:11,183 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:11,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:11,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704588943] [2021-03-11 14:36:11,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:11,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:11,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185276654] [2021-03-11 14:36:11,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:11,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:11,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:11,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:11,207 INFO L87 Difference]: Start difference. First operand 398 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:11,286 INFO L93 Difference]: Finished difference Result 675 states and 1994 transitions. [2021-03-11 14:36:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:11,286 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:11,287 INFO L225 Difference]: With dead ends: 675 [2021-03-11 14:36:11,287 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:36:11,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:11,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:36:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 402. [2021-03-11 14:36:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4688279301745637) internal successors, (1391), 401 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1391 transitions. [2021-03-11 14:36:11,294 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1391 transitions. Word has length 22 [2021-03-11 14:36:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:11,294 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1391 transitions. [2021-03-11 14:36:11,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1391 transitions. [2021-03-11 14:36:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:11,295 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:11,295 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:11,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2021-03-11 14:36:11,295 INFO L428 AbstractCegarLoop]: === Iteration 328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:11,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:11,295 INFO L82 PathProgramCache]: Analyzing trace with hash 569578493, now seen corresponding path program 322 times [2021-03-11 14:36:11,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:11,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118190232] [2021-03-11 14:36:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:11,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:11,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:11,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:11,313 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:11,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:11,324 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:11,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:11,348 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:11,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:11,380 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:11,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:11,405 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:11,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:11,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118190232] [2021-03-11 14:36:11,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:11,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:11,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187754621] [2021-03-11 14:36:11,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:11,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:11,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:11,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:11,429 INFO L87 Difference]: Start difference. First operand 402 states and 1391 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:11,492 INFO L93 Difference]: Finished difference Result 680 states and 2000 transitions. [2021-03-11 14:36:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:11,494 INFO L225 Difference]: With dead ends: 680 [2021-03-11 14:36:11,494 INFO L226 Difference]: Without dead ends: 660 [2021-03-11 14:36:11,494 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-03-11 14:36:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 398. [2021-03-11 14:36:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4760705289672544) internal successors, (1380), 397 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1380 transitions. [2021-03-11 14:36:11,500 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1380 transitions. Word has length 22 [2021-03-11 14:36:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:11,500 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1380 transitions. [2021-03-11 14:36:11,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1380 transitions. [2021-03-11 14:36:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:11,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:11,501 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:11,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2021-03-11 14:36:11,501 INFO L428 AbstractCegarLoop]: === Iteration 329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1990232343, now seen corresponding path program 323 times [2021-03-11 14:36:11,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:11,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735002645] [2021-03-11 14:36:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:11,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:11,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:11,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:11,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:11,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:11,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:11,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:11,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:11,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:11,572 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:11,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:11,596 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:11,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:11,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735002645] [2021-03-11 14:36:11,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:11,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:11,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372371810] [2021-03-11 14:36:11,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:11,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:11,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:11,620 INFO L87 Difference]: Start difference. First operand 398 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:11,697 INFO L93 Difference]: Finished difference Result 685 states and 2012 transitions. [2021-03-11 14:36:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:11,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:11,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:11,698 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:36:11,698 INFO L226 Difference]: Without dead ends: 671 [2021-03-11 14:36:11,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-03-11 14:36:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 406. [2021-03-11 14:36:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.4419753086419753) internal successors, (1394), 405 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1394 transitions. [2021-03-11 14:36:11,705 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1394 transitions. Word has length 22 [2021-03-11 14:36:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:11,705 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 1394 transitions. [2021-03-11 14:36:11,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1394 transitions. [2021-03-11 14:36:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:11,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:11,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:11,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2021-03-11 14:36:11,706 INFO L428 AbstractCegarLoop]: === Iteration 330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:11,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1971798317, now seen corresponding path program 324 times [2021-03-11 14:36:11,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:11,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258931834] [2021-03-11 14:36:11,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:11,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:11,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:11,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:11,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:11,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:11,735 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:11,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:11,758 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:11,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:11,778 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:11,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:11,802 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:11,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:11,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258931834] [2021-03-11 14:36:11,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:11,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:11,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091353269] [2021-03-11 14:36:11,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:11,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:11,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:11,825 INFO L87 Difference]: Start difference. First operand 406 states and 1394 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:11,903 INFO L93 Difference]: Finished difference Result 687 states and 2009 transitions. [2021-03-11 14:36:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:11,903 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:11,904 INFO L225 Difference]: With dead ends: 687 [2021-03-11 14:36:11,904 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:36:11,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:11,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:36:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 393. [2021-03-11 14:36:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4846938775510203) internal successors, (1366), 392 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1366 transitions. [2021-03-11 14:36:11,911 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1366 transitions. Word has length 22 [2021-03-11 14:36:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:11,911 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1366 transitions. [2021-03-11 14:36:11,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1366 transitions. [2021-03-11 14:36:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:11,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:11,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:11,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2021-03-11 14:36:11,912 INFO L428 AbstractCegarLoop]: === Iteration 331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash -869560941, now seen corresponding path program 325 times [2021-03-11 14:36:11,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:11,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337211513] [2021-03-11 14:36:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:11,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:11,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:11,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:11,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:11,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:11,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:11,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:11,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:11,954 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:11,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:11,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:11,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:11,996 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:12,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:12,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337211513] [2021-03-11 14:36:12,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:12,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:12,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196042439] [2021-03-11 14:36:12,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:12,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:12,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:12,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:12,019 INFO L87 Difference]: Start difference. First operand 393 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:12,100 INFO L93 Difference]: Finished difference Result 667 states and 1977 transitions. [2021-03-11 14:36:12,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:12,101 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:12,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:12,102 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:36:12,102 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:12,102 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 400. [2021-03-11 14:36:12,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4711779448621556) internal successors, (1385), 399 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1385 transitions. [2021-03-11 14:36:12,109 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1385 transitions. Word has length 22 [2021-03-11 14:36:12,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:12,109 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1385 transitions. [2021-03-11 14:36:12,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,109 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1385 transitions. [2021-03-11 14:36:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:12,109 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:12,109 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:12,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2021-03-11 14:36:12,109 INFO L428 AbstractCegarLoop]: === Iteration 332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:12,110 INFO L82 PathProgramCache]: Analyzing trace with hash 287763657, now seen corresponding path program 326 times [2021-03-11 14:36:12,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:12,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372287419] [2021-03-11 14:36:12,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:12,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:12,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:12,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:12,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:12,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:12,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:12,151 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:12,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:12,169 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:12,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:12,193 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:12,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:12,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:12,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372287419] [2021-03-11 14:36:12,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:12,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:12,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306813818] [2021-03-11 14:36:12,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:12,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:12,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:12,217 INFO L87 Difference]: Start difference. First operand 400 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:12,310 INFO L93 Difference]: Finished difference Result 669 states and 1978 transitions. [2021-03-11 14:36:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:12,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:12,312 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:36:12,312 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:36:12,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:12,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:36:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 397. [2021-03-11 14:36:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.477272727272727) internal successors, (1377), 396 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1377 transitions. [2021-03-11 14:36:12,319 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:12,319 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1377 transitions. [2021-03-11 14:36:12,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1377 transitions. [2021-03-11 14:36:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:12,319 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:12,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:12,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2021-03-11 14:36:12,319 INFO L428 AbstractCegarLoop]: === Iteration 333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1824968501, now seen corresponding path program 327 times [2021-03-11 14:36:12,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:12,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303352987] [2021-03-11 14:36:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:12,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:12,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:12,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:12,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:12,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:12,348 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:12,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:12,362 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:12,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:12,391 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:12,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:12,414 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:12,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:12,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303352987] [2021-03-11 14:36:12,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:12,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:12,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509482512] [2021-03-11 14:36:12,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:12,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:12,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:12,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:12,438 INFO L87 Difference]: Start difference. First operand 397 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:12,532 INFO L93 Difference]: Finished difference Result 671 states and 1981 transitions. [2021-03-11 14:36:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:12,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:12,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:12,533 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:36:12,533 INFO L226 Difference]: Without dead ends: 660 [2021-03-11 14:36:12,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:12,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-03-11 14:36:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 401. [2021-03-11 14:36:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.46) internal successors, (1384), 400 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1384 transitions. [2021-03-11 14:36:12,542 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1384 transitions. Word has length 22 [2021-03-11 14:36:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:12,542 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1384 transitions. [2021-03-11 14:36:12,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1384 transitions. [2021-03-11 14:36:12,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:12,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:12,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:12,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2021-03-11 14:36:12,543 INFO L428 AbstractCegarLoop]: === Iteration 334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:12,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:12,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1898275913, now seen corresponding path program 328 times [2021-03-11 14:36:12,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:12,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898205275] [2021-03-11 14:36:12,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:12,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:12,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:12,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:12,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:12,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:12,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:12,587 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:12,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:12,615 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:12,640 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:12,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:12,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898205275] [2021-03-11 14:36:12,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:12,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:12,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991154519] [2021-03-11 14:36:12,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:12,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:12,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:12,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:12,663 INFO L87 Difference]: Start difference. First operand 401 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:12,743 INFO L93 Difference]: Finished difference Result 676 states and 1987 transitions. [2021-03-11 14:36:12,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:12,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:12,744 INFO L225 Difference]: With dead ends: 676 [2021-03-11 14:36:12,744 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:12,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 397. [2021-03-11 14:36:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.467171717171717) internal successors, (1373), 396 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1373 transitions. [2021-03-11 14:36:12,751 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1373 transitions. Word has length 22 [2021-03-11 14:36:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:12,751 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1373 transitions. [2021-03-11 14:36:12,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1373 transitions. [2021-03-11 14:36:12,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:12,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:12,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:12,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2021-03-11 14:36:12,751 INFO L428 AbstractCegarLoop]: === Iteration 335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:12,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1734673867, now seen corresponding path program 329 times [2021-03-11 14:36:12,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:12,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8888918] [2021-03-11 14:36:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:12,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:12,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:12,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:12,769 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:12,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:12,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:12,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:12,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:12,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:12,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:12,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:12,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:12,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:12,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8888918] [2021-03-11 14:36:12,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:12,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:12,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534452526] [2021-03-11 14:36:12,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:12,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:12,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:12,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:12,860 INFO L87 Difference]: Start difference. First operand 397 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:12,954 INFO L93 Difference]: Finished difference Result 677 states and 1991 transitions. [2021-03-11 14:36:12,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:12,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:12,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:12,956 INFO L225 Difference]: With dead ends: 677 [2021-03-11 14:36:12,956 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:36:12,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:36:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 403. [2021-03-11 14:36:12,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.442786069651741) internal successors, (1384), 402 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1384 transitions. [2021-03-11 14:36:12,962 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1384 transitions. Word has length 22 [2021-03-11 14:36:12,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:12,962 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 1384 transitions. [2021-03-11 14:36:12,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:12,963 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1384 transitions. [2021-03-11 14:36:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:12,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:12,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:12,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2021-03-11 14:36:12,963 INFO L428 AbstractCegarLoop]: === Iteration 336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:12,963 INFO L82 PathProgramCache]: Analyzing trace with hash -879367213, now seen corresponding path program 330 times [2021-03-11 14:36:12,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:12,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966238308] [2021-03-11 14:36:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:12,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:12,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:12,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:12,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:12,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:12,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:12,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:12,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:13,005 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:13,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:13,024 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:13,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:13,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:13,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:13,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966238308] [2021-03-11 14:36:13,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:13,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:13,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664850649] [2021-03-11 14:36:13,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:13,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:13,072 INFO L87 Difference]: Start difference. First operand 403 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:13,167 INFO L93 Difference]: Finished difference Result 680 states and 1991 transitions. [2021-03-11 14:36:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:13,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:13,168 INFO L225 Difference]: With dead ends: 680 [2021-03-11 14:36:13,168 INFO L226 Difference]: Without dead ends: 654 [2021-03-11 14:36:13,168 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-03-11 14:36:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 393. [2021-03-11 14:36:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4744897959183674) internal successors, (1362), 392 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1362 transitions. [2021-03-11 14:36:13,175 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:13,175 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1362 transitions. [2021-03-11 14:36:13,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,175 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1362 transitions. [2021-03-11 14:36:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:13,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:13,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:13,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2021-03-11 14:36:13,175 INFO L428 AbstractCegarLoop]: === Iteration 337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:13,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1352441469, now seen corresponding path program 331 times [2021-03-11 14:36:13,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:13,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813896342] [2021-03-11 14:36:13,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:13,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:13,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:13,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:13,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:13,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:13,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:13,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:13,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:13,240 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:13,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:13,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:13,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:13,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813896342] [2021-03-11 14:36:13,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:13,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:13,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584518289] [2021-03-11 14:36:13,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:13,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:13,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:13,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:13,290 INFO L87 Difference]: Start difference. First operand 393 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:13,385 INFO L93 Difference]: Finished difference Result 688 states and 2024 transitions. [2021-03-11 14:36:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:13,386 INFO L225 Difference]: With dead ends: 688 [2021-03-11 14:36:13,386 INFO L226 Difference]: Without dead ends: 674 [2021-03-11 14:36:13,386 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-03-11 14:36:13,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 406. [2021-03-11 14:36:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.4469135802469135) internal successors, (1396), 405 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1396 transitions. [2021-03-11 14:36:13,393 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1396 transitions. Word has length 22 [2021-03-11 14:36:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:13,393 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 1396 transitions. [2021-03-11 14:36:13,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1396 transitions. [2021-03-11 14:36:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:13,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:13,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:13,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2021-03-11 14:36:13,393 INFO L428 AbstractCegarLoop]: === Iteration 338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:13,394 INFO L82 PathProgramCache]: Analyzing trace with hash 515568841, now seen corresponding path program 332 times [2021-03-11 14:36:13,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:13,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557766189] [2021-03-11 14:36:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:13,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:13,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:13,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:13,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:13,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:13,421 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:13,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:13,436 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:13,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:13,455 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:13,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:13,479 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:13,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:13,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557766189] [2021-03-11 14:36:13,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:13,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852433348] [2021-03-11 14:36:13,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:13,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:13,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:13,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:13,503 INFO L87 Difference]: Start difference. First operand 406 states and 1396 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:13,583 INFO L93 Difference]: Finished difference Result 687 states and 2017 transitions. [2021-03-11 14:36:13,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:13,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:13,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:13,585 INFO L225 Difference]: With dead ends: 687 [2021-03-11 14:36:13,585 INFO L226 Difference]: Without dead ends: 669 [2021-03-11 14:36:13,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:13,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-03-11 14:36:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 401. [2021-03-11 14:36:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.455) internal successors, (1382), 400 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1382 transitions. [2021-03-11 14:36:13,591 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1382 transitions. Word has length 22 [2021-03-11 14:36:13,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:13,591 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1382 transitions. [2021-03-11 14:36:13,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,592 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1382 transitions. [2021-03-11 14:36:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:13,592 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:13,592 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:13,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2021-03-11 14:36:13,592 INFO L428 AbstractCegarLoop]: === Iteration 339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:13,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2097143967, now seen corresponding path program 333 times [2021-03-11 14:36:13,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:13,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406075473] [2021-03-11 14:36:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:13,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:13,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:13,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:13,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:13,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:13,621 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:13,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:13,636 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:13,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:13,655 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:13,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:13,679 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:13,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:13,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406075473] [2021-03-11 14:36:13,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:13,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:13,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859155592] [2021-03-11 14:36:13,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:13,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:13,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:13,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:13,702 INFO L87 Difference]: Start difference. First operand 401 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:13,798 INFO L93 Difference]: Finished difference Result 694 states and 2030 transitions. [2021-03-11 14:36:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:13,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:13,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:13,799 INFO L225 Difference]: With dead ends: 694 [2021-03-11 14:36:13,799 INFO L226 Difference]: Without dead ends: 680 [2021-03-11 14:36:13,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-03-11 14:36:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 409. [2021-03-11 14:36:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.4215686274509802) internal successors, (1396), 408 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1396 transitions. [2021-03-11 14:36:13,806 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1396 transitions. Word has length 22 [2021-03-11 14:36:13,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:13,806 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 1396 transitions. [2021-03-11 14:36:13,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1396 transitions. [2021-03-11 14:36:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:13,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:13,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:13,807 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2021-03-11 14:36:13,807 INFO L428 AbstractCegarLoop]: === Iteration 340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:13,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2115577993, now seen corresponding path program 334 times [2021-03-11 14:36:13,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:13,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442737086] [2021-03-11 14:36:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:13,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:13,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:13,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:13,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:13,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:13,835 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:13,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:13,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:13,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:13,871 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:13,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:13,896 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:13,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:13,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442737086] [2021-03-11 14:36:13,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:13,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:13,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730409941] [2021-03-11 14:36:13,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:13,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:13,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:13,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:13,920 INFO L87 Difference]: Start difference. First operand 409 states and 1396 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:13,990 INFO L93 Difference]: Finished difference Result 696 states and 2027 transitions. [2021-03-11 14:36:13,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:13,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:13,991 INFO L225 Difference]: With dead ends: 696 [2021-03-11 14:36:13,992 INFO L226 Difference]: Without dead ends: 672 [2021-03-11 14:36:13,992 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 119.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-03-11 14:36:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 401. [2021-03-11 14:36:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.4375) internal successors, (1375), 400 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1375 transitions. [2021-03-11 14:36:13,998 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:13,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:13,998 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1375 transitions. [2021-03-11 14:36:13,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:13,998 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1375 transitions. [2021-03-11 14:36:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:13,999 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:13,999 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:13,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2021-03-11 14:36:13,999 INFO L428 AbstractCegarLoop]: === Iteration 341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:13,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:13,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1087023647, now seen corresponding path program 335 times [2021-03-11 14:36:13,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:13,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112673191] [2021-03-11 14:36:13,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:14,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:14,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:14,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:14,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:14,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:14,029 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:14,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:14,044 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:14,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:14,063 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:14,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:14,087 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:14,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:14,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112673191] [2021-03-11 14:36:14,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:14,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:14,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522085036] [2021-03-11 14:36:14,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:14,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:14,110 INFO L87 Difference]: Start difference. First operand 401 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:14,211 INFO L93 Difference]: Finished difference Result 690 states and 2015 transitions. [2021-03-11 14:36:14,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:14,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:14,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:14,212 INFO L225 Difference]: With dead ends: 690 [2021-03-11 14:36:14,213 INFO L226 Difference]: Without dead ends: 677 [2021-03-11 14:36:14,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-03-11 14:36:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 407. [2021-03-11 14:36:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.413793103448276) internal successors, (1386), 406 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1386 transitions. [2021-03-11 14:36:14,219 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1386 transitions. Word has length 22 [2021-03-11 14:36:14,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:14,220 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1386 transitions. [2021-03-11 14:36:14,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,220 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1386 transitions. [2021-03-11 14:36:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:14,220 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:14,220 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:14,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2021-03-11 14:36:14,220 INFO L428 AbstractCegarLoop]: === Iteration 342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:14,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1942330301, now seen corresponding path program 336 times [2021-03-11 14:36:14,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:14,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245829695] [2021-03-11 14:36:14,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:14,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:14,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:14,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:14,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:14,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:14,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:14,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:14,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:14,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:14,283 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:14,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:14,308 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:14,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:14,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245829695] [2021-03-11 14:36:14,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:14,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:14,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066495497] [2021-03-11 14:36:14,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:14,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:14,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:14,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:14,332 INFO L87 Difference]: Start difference. First operand 407 states and 1386 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:14,419 INFO L93 Difference]: Finished difference Result 693 states and 2015 transitions. [2021-03-11 14:36:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:14,420 INFO L225 Difference]: With dead ends: 693 [2021-03-11 14:36:14,420 INFO L226 Difference]: Without dead ends: 657 [2021-03-11 14:36:14,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-03-11 14:36:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 387. [2021-03-11 14:36:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:36:14,427 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:14,427 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:36:14,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:36:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:14,428 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:14,428 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:14,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2021-03-11 14:36:14,428 INFO L428 AbstractCegarLoop]: === Iteration 343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:14,428 INFO L82 PathProgramCache]: Analyzing trace with hash -784415035, now seen corresponding path program 337 times [2021-03-11 14:36:14,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:14,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315371049] [2021-03-11 14:36:14,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:14,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:14,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:14,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:14,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:14,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:14,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:14,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:14,487 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:14,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:14,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:14,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:14,540 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:14,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:14,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315371049] [2021-03-11 14:36:14,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:14,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:14,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882155193] [2021-03-11 14:36:14,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:14,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:14,564 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:14,639 INFO L93 Difference]: Finished difference Result 633 states and 1879 transitions. [2021-03-11 14:36:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:14,640 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:36:14,640 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:36:14,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:36:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 393. [2021-03-11 14:36:14,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.479591836734694) internal successors, (1364), 392 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1364 transitions. [2021-03-11 14:36:14,646 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:14,646 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1364 transitions. [2021-03-11 14:36:14,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1364 transitions. [2021-03-11 14:36:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:14,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:14,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:14,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2021-03-11 14:36:14,647 INFO L428 AbstractCegarLoop]: === Iteration 344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1857500415, now seen corresponding path program 338 times [2021-03-11 14:36:14,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:14,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796409486] [2021-03-11 14:36:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:14,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:14,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:14,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:14,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:14,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:14,681 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:14,704 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:14,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:14,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:14,755 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:14,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:14,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796409486] [2021-03-11 14:36:14,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:14,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:14,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307842131] [2021-03-11 14:36:14,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:14,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:14,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:14,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:14,778 INFO L87 Difference]: Start difference. First operand 393 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:14,867 INFO L93 Difference]: Finished difference Result 638 states and 1888 transitions. [2021-03-11 14:36:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:14,869 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:36:14,869 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:36:14,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:36:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 392. [2021-03-11 14:36:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.483375959079284) internal successors, (1362), 391 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1362 transitions. [2021-03-11 14:36:14,875 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1362 transitions. Word has length 22 [2021-03-11 14:36:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:14,875 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1362 transitions. [2021-03-11 14:36:14,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1362 transitions. [2021-03-11 14:36:14,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:14,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:14,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:14,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2021-03-11 14:36:14,876 INFO L428 AbstractCegarLoop]: === Iteration 345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 228277497, now seen corresponding path program 339 times [2021-03-11 14:36:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529545417] [2021-03-11 14:36:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:14,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:14,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:14,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:14,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:14,894 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:14,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:14,910 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:14,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:14,933 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:14,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:14,962 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:14,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:14,986 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:14,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:15,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529545417] [2021-03-11 14:36:15,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:15,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:15,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232355837] [2021-03-11 14:36:15,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:15,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:15,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:15,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:15,010 INFO L87 Difference]: Start difference. First operand 392 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:15,083 INFO L93 Difference]: Finished difference Result 632 states and 1876 transitions. [2021-03-11 14:36:15,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:15,084 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:36:15,084 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:36:15,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:36:15,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 393. [2021-03-11 14:36:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4770408163265305) internal successors, (1363), 392 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1363 transitions. [2021-03-11 14:36:15,091 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:15,091 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1363 transitions. [2021-03-11 14:36:15,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1363 transitions. [2021-03-11 14:36:15,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:15,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:15,091 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:15,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2021-03-11 14:36:15,091 INFO L428 AbstractCegarLoop]: === Iteration 346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:15,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:15,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1920519039, now seen corresponding path program 340 times [2021-03-11 14:36:15,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:15,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122504426] [2021-03-11 14:36:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:15,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:15,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:15,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:15,110 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:15,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:15,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:15,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:15,148 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:15,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:15,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:15,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:15,214 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:15,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:15,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122504426] [2021-03-11 14:36:15,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:15,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:15,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109541659] [2021-03-11 14:36:15,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:15,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:15,238 INFO L87 Difference]: Start difference. First operand 393 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:15,332 INFO L93 Difference]: Finished difference Result 636 states and 1883 transitions. [2021-03-11 14:36:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:15,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:15,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:15,333 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:36:15,333 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:36:15,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:15,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:36:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 392. [2021-03-11 14:36:15,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4808184143222505) internal successors, (1361), 391 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1361 transitions. [2021-03-11 14:36:15,339 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1361 transitions. Word has length 22 [2021-03-11 14:36:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:15,339 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1361 transitions. [2021-03-11 14:36:15,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1361 transitions. [2021-03-11 14:36:15,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:15,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:15,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:15,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2021-03-11 14:36:15,340 INFO L428 AbstractCegarLoop]: === Iteration 347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 249283705, now seen corresponding path program 341 times [2021-03-11 14:36:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:15,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878216926] [2021-03-11 14:36:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:15,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:15,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:15,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:15,358 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:15,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:15,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:15,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:15,397 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:15,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:15,416 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:15,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:15,439 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:15,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:15,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878216926] [2021-03-11 14:36:15,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:15,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580613565] [2021-03-11 14:36:15,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:15,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:15,463 INFO L87 Difference]: Start difference. First operand 392 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:15,541 INFO L93 Difference]: Finished difference Result 646 states and 1907 transitions. [2021-03-11 14:36:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:15,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:15,543 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:36:15,543 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:15,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:15,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 397. [2021-03-11 14:36:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.45959595959596) internal successors, (1370), 396 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1370 transitions. [2021-03-11 14:36:15,549 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:15,549 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1370 transitions. [2021-03-11 14:36:15,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1370 transitions. [2021-03-11 14:36:15,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:15,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:15,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:15,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2021-03-11 14:36:15,550 INFO L428 AbstractCegarLoop]: === Iteration 348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:15,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:15,550 INFO L82 PathProgramCache]: Analyzing trace with hash -826427451, now seen corresponding path program 342 times [2021-03-11 14:36:15,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:15,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314882339] [2021-03-11 14:36:15,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:15,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:15,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:15,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:15,571 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:15,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:15,587 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:15,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:15,610 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:15,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:15,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:15,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:15,653 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:15,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:15,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314882339] [2021-03-11 14:36:15,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:15,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:15,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197559813] [2021-03-11 14:36:15,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:15,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:15,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:15,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:15,676 INFO L87 Difference]: Start difference. First operand 397 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:15,767 INFO L93 Difference]: Finished difference Result 645 states and 1900 transitions. [2021-03-11 14:36:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:15,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:15,768 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:15,768 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:36:15,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:36:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 391. [2021-03-11 14:36:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4846153846153847) internal successors, (1359), 390 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1359 transitions. [2021-03-11 14:36:15,775 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:15,775 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1359 transitions. [2021-03-11 14:36:15,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1359 transitions. [2021-03-11 14:36:15,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:15,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:15,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:15,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2021-03-11 14:36:15,775 INFO L428 AbstractCegarLoop]: === Iteration 349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:15,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1141619043, now seen corresponding path program 343 times [2021-03-11 14:36:15,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:15,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406385035] [2021-03-11 14:36:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:15,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:15,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:15,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:15,794 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:15,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:15,810 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:15,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:15,831 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:15,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:15,858 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:15,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:15,883 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:15,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:15,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406385035] [2021-03-11 14:36:15,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:15,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:15,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736592044] [2021-03-11 14:36:15,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:15,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:15,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:15,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:15,906 INFO L87 Difference]: Start difference. First operand 391 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:15,980 INFO L93 Difference]: Finished difference Result 642 states and 1896 transitions. [2021-03-11 14:36:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:15,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:15,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:15,982 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:36:15,982 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:36:15,982 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:36:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 395. [2021-03-11 14:36:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.472081218274112) internal successors, (1368), 394 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1368 transitions. [2021-03-11 14:36:15,988 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:15,988 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1368 transitions. [2021-03-11 14:36:15,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1368 transitions. [2021-03-11 14:36:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:15,989 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:15,989 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:15,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2021-03-11 14:36:15,989 INFO L428 AbstractCegarLoop]: === Iteration 350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:15,989 INFO L82 PathProgramCache]: Analyzing trace with hash 68533663, now seen corresponding path program 344 times [2021-03-11 14:36:15,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:15,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809366782] [2021-03-11 14:36:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:15,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:15,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:15,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:16,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:16,009 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:16,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:16,025 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:16,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:16,047 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:16,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:16,075 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:16,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:16,099 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:16,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:16,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809366782] [2021-03-11 14:36:16,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:16,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:16,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926941597] [2021-03-11 14:36:16,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:16,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:16,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:16,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:16,123 INFO L87 Difference]: Start difference. First operand 395 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:16,215 INFO L93 Difference]: Finished difference Result 647 states and 1905 transitions. [2021-03-11 14:36:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:16,216 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:36:16,216 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:16,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:16,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 394. [2021-03-11 14:36:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.475826972010178) internal successors, (1366), 393 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1366 transitions. [2021-03-11 14:36:16,223 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1366 transitions. Word has length 22 [2021-03-11 14:36:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:16,223 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1366 transitions. [2021-03-11 14:36:16,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,223 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1366 transitions. [2021-03-11 14:36:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:16,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:16,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:16,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2021-03-11 14:36:16,223 INFO L428 AbstractCegarLoop]: === Iteration 351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:16,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:16,224 INFO L82 PathProgramCache]: Analyzing trace with hash 553873721, now seen corresponding path program 345 times [2021-03-11 14:36:16,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:16,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515992071] [2021-03-11 14:36:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:16,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:16,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:16,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:16,243 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:16,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:16,261 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:16,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:16,283 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:16,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:16,317 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:16,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:16,345 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:16,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:16,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515992071] [2021-03-11 14:36:16,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:16,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:16,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566829608] [2021-03-11 14:36:16,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:16,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:16,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:16,368 INFO L87 Difference]: Start difference. First operand 394 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:16,429 INFO L93 Difference]: Finished difference Result 645 states and 1900 transitions. [2021-03-11 14:36:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:16,430 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:16,430 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:36:16,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:16,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:36:16,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 396. [2021-03-11 14:36:16,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4658227848101264) internal successors, (1369), 395 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1369 transitions. [2021-03-11 14:36:16,437 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1369 transitions. Word has length 22 [2021-03-11 14:36:16,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:16,437 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1369 transitions. [2021-03-11 14:36:16,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1369 transitions. [2021-03-11 14:36:16,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:16,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:16,438 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:16,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2021-03-11 14:36:16,438 INFO L428 AbstractCegarLoop]: === Iteration 352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:16,438 INFO L82 PathProgramCache]: Analyzing trace with hash 16018143, now seen corresponding path program 346 times [2021-03-11 14:36:16,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:16,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592341648] [2021-03-11 14:36:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:16,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:16,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:16,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:16,459 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:16,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:16,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:16,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:16,496 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:16,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:16,523 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:16,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:16,547 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:16,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:16,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592341648] [2021-03-11 14:36:16,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:16,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:16,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308421372] [2021-03-11 14:36:16,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:16,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:16,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:16,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:16,570 INFO L87 Difference]: Start difference. First operand 396 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:16,646 INFO L93 Difference]: Finished difference Result 652 states and 1912 transitions. [2021-03-11 14:36:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:16,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:16,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:16,648 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:36:16,648 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:36:16,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:36:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 394. [2021-03-11 14:36:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4707379134860052) internal successors, (1364), 393 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1364 transitions. [2021-03-11 14:36:16,655 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:16,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:16,655 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1364 transitions. [2021-03-11 14:36:16,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,655 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1364 transitions. [2021-03-11 14:36:16,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:16,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:16,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:16,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2021-03-11 14:36:16,655 INFO L428 AbstractCegarLoop]: === Iteration 353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 574879929, now seen corresponding path program 347 times [2021-03-11 14:36:16,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:16,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993127740] [2021-03-11 14:36:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:16,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:16,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:16,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:16,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:16,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:16,691 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:16,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:16,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:16,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:16,732 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:16,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:16,756 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:16,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:16,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993127740] [2021-03-11 14:36:16,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:16,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:16,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108678070] [2021-03-11 14:36:16,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:16,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:16,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:16,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:16,780 INFO L87 Difference]: Start difference. First operand 394 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:16,875 INFO L93 Difference]: Finished difference Result 661 states and 1934 transitions. [2021-03-11 14:36:16,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:16,875 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:16,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:16,876 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:36:16,876 INFO L226 Difference]: Without dead ends: 647 [2021-03-11 14:36:16,876 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-03-11 14:36:16,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 402. [2021-03-11 14:36:16,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4364089775561095) internal successors, (1378), 401 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1378 transitions. [2021-03-11 14:36:16,883 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:16,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:16,883 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1378 transitions. [2021-03-11 14:36:16,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:16,883 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1378 transitions. [2021-03-11 14:36:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:16,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:16,884 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:16,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2021-03-11 14:36:16,884 INFO L428 AbstractCegarLoop]: === Iteration 354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:16,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1110109731, now seen corresponding path program 348 times [2021-03-11 14:36:16,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:16,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117824508] [2021-03-11 14:36:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:16,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:16,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:16,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:16,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:16,902 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:16,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:16,918 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:16,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:16,940 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:16,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:16,959 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:16,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:16,984 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:16,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:17,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117824508] [2021-03-11 14:36:17,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:17,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:17,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794118646] [2021-03-11 14:36:17,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:17,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:17,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:17,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:17,013 INFO L87 Difference]: Start difference. First operand 402 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:17,091 INFO L93 Difference]: Finished difference Result 663 states and 1931 transitions. [2021-03-11 14:36:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:17,092 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:36:17,092 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:36:17,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:36:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 391. [2021-03-11 14:36:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.476923076923077) internal successors, (1356), 390 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1356 transitions. [2021-03-11 14:36:17,099 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1356 transitions. Word has length 22 [2021-03-11 14:36:17,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:17,099 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1356 transitions. [2021-03-11 14:36:17,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1356 transitions. [2021-03-11 14:36:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:17,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:17,099 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:17,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2021-03-11 14:36:17,100 INFO L428 AbstractCegarLoop]: === Iteration 355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:17,100 INFO L82 PathProgramCache]: Analyzing trace with hash -811958301, now seen corresponding path program 349 times [2021-03-11 14:36:17,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:17,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17139827] [2021-03-11 14:36:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:17,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:17,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:17,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:17,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:17,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:17,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:17,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:17,159 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:17,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:17,191 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:17,217 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:17,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:17,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17139827] [2021-03-11 14:36:17,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:17,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:17,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831757184] [2021-03-11 14:36:17,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:17,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:17,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:17,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:17,241 INFO L87 Difference]: Start difference. First operand 391 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:17,318 INFO L93 Difference]: Finished difference Result 637 states and 1883 transitions. [2021-03-11 14:36:17,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:17,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:17,319 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:36:17,319 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:36:17,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:36:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 394. [2021-03-11 14:36:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4681933842239188) internal successors, (1363), 393 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1363 transitions. [2021-03-11 14:36:17,326 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:17,326 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1363 transitions. [2021-03-11 14:36:17,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1363 transitions. [2021-03-11 14:36:17,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:17,327 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:17,327 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:17,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2021-03-11 14:36:17,327 INFO L428 AbstractCegarLoop]: === Iteration 356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1334212459, now seen corresponding path program 350 times [2021-03-11 14:36:17,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:17,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234962837] [2021-03-11 14:36:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:17,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:17,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:17,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:17,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:17,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:17,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:17,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:17,384 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:17,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:17,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:17,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:17,442 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:17,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234962837] [2021-03-11 14:36:17,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:17,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:17,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387107922] [2021-03-11 14:36:17,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:17,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:17,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:17,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:17,465 INFO L87 Difference]: Start difference. First operand 394 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:17,557 INFO L93 Difference]: Finished difference Result 641 states and 1890 transitions. [2021-03-11 14:36:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:17,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:17,559 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:36:17,559 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:36:17,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:36:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 393. [2021-03-11 14:36:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4719387755102042) internal successors, (1361), 392 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1361 transitions. [2021-03-11 14:36:17,565 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1361 transitions. Word has length 22 [2021-03-11 14:36:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:17,565 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1361 transitions. [2021-03-11 14:36:17,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,565 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1361 transitions. [2021-03-11 14:36:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:17,566 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:17,566 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:17,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2021-03-11 14:36:17,566 INFO L428 AbstractCegarLoop]: === Iteration 357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:17,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1882571141, now seen corresponding path program 351 times [2021-03-11 14:36:17,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:17,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745777308] [2021-03-11 14:36:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:17,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:17,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:17,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:17,585 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:17,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:17,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:17,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:17,623 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:17,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:17,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:17,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:17,674 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:17,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:17,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745777308] [2021-03-11 14:36:17,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:17,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:17,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043555983] [2021-03-11 14:36:17,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:17,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:17,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:17,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:17,697 INFO L87 Difference]: Start difference. First operand 393 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:17,767 INFO L93 Difference]: Finished difference Result 641 states and 1889 transitions. [2021-03-11 14:36:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:17,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:17,768 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:36:17,768 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:17,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:17,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 395. [2021-03-11 14:36:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4619289340101522) internal successors, (1364), 394 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1364 transitions. [2021-03-11 14:36:17,775 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:17,775 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1364 transitions. [2021-03-11 14:36:17,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1364 transitions. [2021-03-11 14:36:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:17,776 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:17,776 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:17,776 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2021-03-11 14:36:17,776 INFO L428 AbstractCegarLoop]: === Iteration 358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:17,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1344715563, now seen corresponding path program 352 times [2021-03-11 14:36:17,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:17,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113211706] [2021-03-11 14:36:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:17,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:17,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:17,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:17,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:17,795 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:17,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:17,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:17,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:17,833 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:17,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:17,860 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:17,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:17,885 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:17,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:17,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113211706] [2021-03-11 14:36:17,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:17,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:17,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12736907] [2021-03-11 14:36:17,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:17,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:17,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:17,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:17,908 INFO L87 Difference]: Start difference. First operand 395 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:17,991 INFO L93 Difference]: Finished difference Result 648 states and 1901 transitions. [2021-03-11 14:36:17,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:17,992 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:17,993 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:36:17,993 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:36:17,993 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:36:17,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 393. [2021-03-11 14:36:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4668367346938775) internal successors, (1359), 392 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1359 transitions. [2021-03-11 14:36:17,999 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:17,999 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1359 transitions. [2021-03-11 14:36:17,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1359 transitions. [2021-03-11 14:36:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:18,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:18,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:18,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2021-03-11 14:36:18,000 INFO L428 AbstractCegarLoop]: === Iteration 359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:18,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1840558725, now seen corresponding path program 353 times [2021-03-11 14:36:18,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:18,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324709582] [2021-03-11 14:36:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:18,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:18,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:18,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:18,018 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:18,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:18,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:18,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:18,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:18,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:18,076 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:18,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:18,100 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:18,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:18,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324709582] [2021-03-11 14:36:18,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:18,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:18,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954478525] [2021-03-11 14:36:18,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:18,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:18,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:18,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:18,123 INFO L87 Difference]: Start difference. First operand 393 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:18,215 INFO L93 Difference]: Finished difference Result 653 states and 1915 transitions. [2021-03-11 14:36:18,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:18,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:18,216 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:36:18,216 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:36:18,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:18,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:36:18,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 399. [2021-03-11 14:36:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.442211055276382) internal successors, (1370), 398 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1370 transitions. [2021-03-11 14:36:18,223 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:18,223 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1370 transitions. [2021-03-11 14:36:18,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1370 transitions. [2021-03-11 14:36:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:18,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:18,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:18,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2021-03-11 14:36:18,224 INFO L428 AbstractCegarLoop]: === Iteration 360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash -843467613, now seen corresponding path program 354 times [2021-03-11 14:36:18,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:18,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414563031] [2021-03-11 14:36:18,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:18,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:18,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:18,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:18,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:18,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:18,258 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:18,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:18,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:18,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:18,300 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:18,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:18,325 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:18,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:18,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414563031] [2021-03-11 14:36:18,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:18,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:18,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550219007] [2021-03-11 14:36:18,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:18,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:18,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:18,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:18,348 INFO L87 Difference]: Start difference. First operand 399 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:18,420 INFO L93 Difference]: Finished difference Result 656 states and 1915 transitions. [2021-03-11 14:36:18,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:18,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:18,422 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:36:18,422 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:18,422 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:18,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:18,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 391. [2021-03-11 14:36:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.471794871794872) internal successors, (1354), 390 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1354 transitions. [2021-03-11 14:36:18,428 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1354 transitions. Word has length 22 [2021-03-11 14:36:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:18,428 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1354 transitions. [2021-03-11 14:36:18,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,429 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1354 transitions. [2021-03-11 14:36:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:18,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:18,429 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:18,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2021-03-11 14:36:18,429 INFO L428 AbstractCegarLoop]: === Iteration 361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:18,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1233851233, now seen corresponding path program 355 times [2021-03-11 14:36:18,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:18,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332213776] [2021-03-11 14:36:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:18,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:18,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:18,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:18,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:18,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:18,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:18,468 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:18,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:18,483 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:18,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:18,502 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:18,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:18,526 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:18,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:18,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332213776] [2021-03-11 14:36:18,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:18,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:18,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873948513] [2021-03-11 14:36:18,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:18,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:18,549 INFO L87 Difference]: Start difference. First operand 391 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:18,642 INFO L93 Difference]: Finished difference Result 672 states and 1970 transitions. [2021-03-11 14:36:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:18,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:18,644 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:36:18,644 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:36:18,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:36:18,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 404. [2021-03-11 14:36:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.444168734491315) internal successors, (1388), 403 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1388 transitions. [2021-03-11 14:36:18,650 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1388 transitions. Word has length 22 [2021-03-11 14:36:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:18,650 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 1388 transitions. [2021-03-11 14:36:18,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,650 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1388 transitions. [2021-03-11 14:36:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:18,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:18,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:18,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2021-03-11 14:36:18,651 INFO L428 AbstractCegarLoop]: === Iteration 362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:18,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:18,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1985404907, now seen corresponding path program 356 times [2021-03-11 14:36:18,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:18,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777593846] [2021-03-11 14:36:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:18,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:18,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:18,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:18,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:18,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:18,686 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:18,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:18,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:18,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:18,720 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:18,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:18,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:18,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:18,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777593846] [2021-03-11 14:36:18,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:18,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:18,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028954441] [2021-03-11 14:36:18,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:18,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:18,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:18,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:18,768 INFO L87 Difference]: Start difference. First operand 404 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:18,861 INFO L93 Difference]: Finished difference Result 671 states and 1963 transitions. [2021-03-11 14:36:18,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:18,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:18,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:18,863 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:36:18,863 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:36:18,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:36:18,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 399. [2021-03-11 14:36:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4522613065326633) internal successors, (1374), 398 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1374 transitions. [2021-03-11 14:36:18,869 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1374 transitions. Word has length 22 [2021-03-11 14:36:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:18,870 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1374 transitions. [2021-03-11 14:36:18,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1374 transitions. [2021-03-11 14:36:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:18,870 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:18,870 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:18,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2021-03-11 14:36:18,870 INFO L428 AbstractCegarLoop]: === Iteration 363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:18,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1460678209, now seen corresponding path program 357 times [2021-03-11 14:36:18,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:18,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973544716] [2021-03-11 14:36:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:18,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:18,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:18,889 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:18,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:18,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:18,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:18,920 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:18,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:18,940 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:18,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:18,964 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:18,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:18,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973544716] [2021-03-11 14:36:18,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:18,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:18,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666841995] [2021-03-11 14:36:18,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:18,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:18,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:18,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:18,988 INFO L87 Difference]: Start difference. First operand 399 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:19,060 INFO L93 Difference]: Finished difference Result 678 states and 1976 transitions. [2021-03-11 14:36:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:19,061 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:19,062 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:36:19,062 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:36:19,062 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:19,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:36:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 407. [2021-03-11 14:36:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.41871921182266) internal successors, (1388), 406 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1388 transitions. [2021-03-11 14:36:19,069 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1388 transitions. Word has length 22 [2021-03-11 14:36:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:19,069 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1388 transitions. [2021-03-11 14:36:19,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1388 transitions. [2021-03-11 14:36:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:19,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:19,069 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:19,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2021-03-11 14:36:19,069 INFO L428 AbstractCegarLoop]: === Iteration 364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:19,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1995908011, now seen corresponding path program 358 times [2021-03-11 14:36:19,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:19,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885080451] [2021-03-11 14:36:19,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:19,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:19,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:19,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:19,088 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:19,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:19,104 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:19,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:19,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:19,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:19,140 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:19,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:19,165 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:19,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:19,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885080451] [2021-03-11 14:36:19,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:19,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:19,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266644850] [2021-03-11 14:36:19,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:19,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:19,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:19,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:19,188 INFO L87 Difference]: Start difference. First operand 407 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:19,257 INFO L93 Difference]: Finished difference Result 680 states and 1973 transitions. [2021-03-11 14:36:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:19,259 INFO L225 Difference]: With dead ends: 680 [2021-03-11 14:36:19,259 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:19,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 399. [2021-03-11 14:36:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4346733668341707) internal successors, (1367), 398 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1367 transitions. [2021-03-11 14:36:19,265 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1367 transitions. Word has length 22 [2021-03-11 14:36:19,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:19,265 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1367 transitions. [2021-03-11 14:36:19,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,265 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1367 transitions. [2021-03-11 14:36:19,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:19,266 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:19,266 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:19,266 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2021-03-11 14:36:19,266 INFO L428 AbstractCegarLoop]: === Iteration 365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:19,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:19,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1397659585, now seen corresponding path program 359 times [2021-03-11 14:36:19,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:19,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965836470] [2021-03-11 14:36:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:19,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:19,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:19,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:19,285 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:19,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:19,301 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:19,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:19,317 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:19,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:19,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:19,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:19,360 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:19,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:19,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965836470] [2021-03-11 14:36:19,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:19,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:19,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980907769] [2021-03-11 14:36:19,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:19,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:19,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:19,384 INFO L87 Difference]: Start difference. First operand 399 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:19,456 INFO L93 Difference]: Finished difference Result 674 states and 1961 transitions. [2021-03-11 14:36:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:19,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:19,458 INFO L225 Difference]: With dead ends: 674 [2021-03-11 14:36:19,458 INFO L226 Difference]: Without dead ends: 661 [2021-03-11 14:36:19,458 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-11 14:36:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 405. [2021-03-11 14:36:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.410891089108911) internal successors, (1378), 404 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1378 transitions. [2021-03-11 14:36:19,464 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:19,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:19,465 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 1378 transitions. [2021-03-11 14:36:19,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1378 transitions. [2021-03-11 14:36:19,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:19,465 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:19,465 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:19,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2021-03-11 14:36:19,465 INFO L428 AbstractCegarLoop]: === Iteration 366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:19,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1286366753, now seen corresponding path program 360 times [2021-03-11 14:36:19,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:19,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173042799] [2021-03-11 14:36:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:19,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:19,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:19,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:19,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:36:19,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:36:19,500 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:19,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:19,515 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:19,539 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:19,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:19,564 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:19,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:19,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:19,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173042799] [2021-03-11 14:36:19,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:19,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:19,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211682670] [2021-03-11 14:36:19,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:19,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:19,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:19,587 INFO L87 Difference]: Start difference. First operand 405 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:19,646 INFO L93 Difference]: Finished difference Result 677 states and 1961 transitions. [2021-03-11 14:36:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:19,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:19,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:19,648 INFO L225 Difference]: With dead ends: 677 [2021-03-11 14:36:19,648 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:36:19,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 127.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:36:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 383. [2021-03-11 14:36:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4973821989528795) internal successors, (1336), 382 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1336 transitions. [2021-03-11 14:36:19,654 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1336 transitions. Word has length 22 [2021-03-11 14:36:19,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:19,654 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1336 transitions. [2021-03-11 14:36:19,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1336 transitions. [2021-03-11 14:36:19,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:19,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:19,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:19,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2021-03-11 14:36:19,655 INFO L428 AbstractCegarLoop]: === Iteration 367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1636546229, now seen corresponding path program 361 times [2021-03-11 14:36:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:19,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044581585] [2021-03-11 14:36:19,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:19,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:19,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:19,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:19,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:19,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:19,690 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:19,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:19,705 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:19,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:19,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:19,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:19,748 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:19,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:19,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044581585] [2021-03-11 14:36:19,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:19,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:19,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217478922] [2021-03-11 14:36:19,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:19,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:19,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:19,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:19,772 INFO L87 Difference]: Start difference. First operand 383 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:19,848 INFO L93 Difference]: Finished difference Result 543 states and 1643 transitions. [2021-03-11 14:36:19,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:19,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:19,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:19,849 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:36:19,849 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:36:19,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:36:19,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 387. [2021-03-11 14:36:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.494818652849741) internal successors, (1349), 386 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1349 transitions. [2021-03-11 14:36:19,855 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:19,855 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1349 transitions. [2021-03-11 14:36:19,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1349 transitions. [2021-03-11 14:36:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:19,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:19,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:19,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2021-03-11 14:36:19,856 INFO L428 AbstractCegarLoop]: === Iteration 368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:19,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:19,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1791038371, now seen corresponding path program 362 times [2021-03-11 14:36:19,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:19,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4244421] [2021-03-11 14:36:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:19,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:19,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:19,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:19,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:19,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:19,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:19,892 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:19,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:19,907 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:19,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:19,926 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:19,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:19,951 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:19,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:19,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4244421] [2021-03-11 14:36:19,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:19,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:19,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310802826] [2021-03-11 14:36:19,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:19,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:19,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:19,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:19,975 INFO L87 Difference]: Start difference. First operand 387 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:20,034 INFO L93 Difference]: Finished difference Result 541 states and 1638 transitions. [2021-03-11 14:36:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:20,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:20,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:20,035 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:36:20,035 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:36:20,035 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 124.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:36:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 386. [2021-03-11 14:36:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.498701298701299) internal successors, (1347), 385 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1347 transitions. [2021-03-11 14:36:20,041 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:20,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:20,041 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1347 transitions. [2021-03-11 14:36:20,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1347 transitions. [2021-03-11 14:36:20,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:20,042 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:20,042 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:20,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2021-03-11 14:36:20,042 INFO L428 AbstractCegarLoop]: === Iteration 369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:20,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:20,042 INFO L82 PathProgramCache]: Analyzing trace with hash 36108375, now seen corresponding path program 363 times [2021-03-11 14:36:20,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:20,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412591903] [2021-03-11 14:36:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:20,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:20,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:20,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:20,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:20,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:20,076 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:20,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:20,091 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:20,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:20,110 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:20,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:20,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:20,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:20,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412591903] [2021-03-11 14:36:20,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:20,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:20,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922980183] [2021-03-11 14:36:20,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:20,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:20,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:20,158 INFO L87 Difference]: Start difference. First operand 386 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:20,233 INFO L93 Difference]: Finished difference Result 545 states and 1647 transitions. [2021-03-11 14:36:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:20,234 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:36:20,234 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:36:20,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:36:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 388. [2021-03-11 14:36:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.488372093023256) internal successors, (1350), 387 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1350 transitions. [2021-03-11 14:36:20,241 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:20,241 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1350 transitions. [2021-03-11 14:36:20,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1350 transitions. [2021-03-11 14:36:20,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:20,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:20,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:20,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2021-03-11 14:36:20,241 INFO L428 AbstractCegarLoop]: === Iteration 370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:20,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:20,242 INFO L82 PathProgramCache]: Analyzing trace with hash -466433177, now seen corresponding path program 364 times [2021-03-11 14:36:20,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:20,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913019568] [2021-03-11 14:36:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:20,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:20,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:20,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:20,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:20,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:20,277 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:20,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:20,293 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:20,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:20,312 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:20,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:20,336 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:20,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:20,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:20,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913019568] [2021-03-11 14:36:20,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:20,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:20,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041422469] [2021-03-11 14:36:20,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:20,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:20,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:20,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:20,360 INFO L87 Difference]: Start difference. First operand 388 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:20,438 INFO L93 Difference]: Finished difference Result 544 states and 1643 transitions. [2021-03-11 14:36:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:20,440 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:36:20,440 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:36:20,440 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:20,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:36:20,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 386. [2021-03-11 14:36:20,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.496103896103896) internal successors, (1346), 385 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1346 transitions. [2021-03-11 14:36:20,446 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:20,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:20,446 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1346 transitions. [2021-03-11 14:36:20,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,446 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1346 transitions. [2021-03-11 14:36:20,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:20,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:20,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:20,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2021-03-11 14:36:20,447 INFO L428 AbstractCegarLoop]: === Iteration 371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1409837337, now seen corresponding path program 365 times [2021-03-11 14:36:20,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:20,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004776040] [2021-03-11 14:36:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:20,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:20,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:20,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:20,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:20,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:20,482 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:20,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:20,498 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:20,518 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:20,543 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:20,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004776040] [2021-03-11 14:36:20,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:20,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:20,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189240834] [2021-03-11 14:36:20,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:20,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:20,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:20,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:20,571 INFO L87 Difference]: Start difference. First operand 386 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:20,630 INFO L93 Difference]: Finished difference Result 540 states and 1635 transitions. [2021-03-11 14:36:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:20,631 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:36:20,631 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:36:20,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:36:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 387. [2021-03-11 14:36:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:36:20,638 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:20,638 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:36:20,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:36:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:20,638 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:20,638 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:20,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2021-03-11 14:36:20,638 INFO L428 AbstractCegarLoop]: === Iteration 372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:20,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:20,639 INFO L82 PathProgramCache]: Analyzing trace with hash 201103621, now seen corresponding path program 366 times [2021-03-11 14:36:20,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:20,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470622109] [2021-03-11 14:36:20,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:20,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:20,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:20,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:20,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:20,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:20,675 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:20,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:20,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:20,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:20,710 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:20,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:20,734 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:20,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:20,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470622109] [2021-03-11 14:36:20,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:20,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:20,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603618801] [2021-03-11 14:36:20,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:20,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:20,758 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:20,836 INFO L93 Difference]: Finished difference Result 541 states and 1636 transitions. [2021-03-11 14:36:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:20,837 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:36:20,837 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:36:20,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:36:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 385. [2021-03-11 14:36:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.5) internal successors, (1344), 384 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1344 transitions. [2021-03-11 14:36:20,843 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:20,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:20,843 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1344 transitions. [2021-03-11 14:36:20,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:20,843 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1344 transitions. [2021-03-11 14:36:20,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:20,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:20,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:20,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2021-03-11 14:36:20,844 INFO L428 AbstractCegarLoop]: === Iteration 373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash -732386989, now seen corresponding path program 367 times [2021-03-11 14:36:20,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:20,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659520481] [2021-03-11 14:36:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:20,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:20,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:20,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:20,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:20,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:20,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:20,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:20,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:20,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:20,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:20,922 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:20,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:20,946 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:20,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:20,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659520481] [2021-03-11 14:36:20,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:20,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:20,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673466807] [2021-03-11 14:36:20,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:20,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:20,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:20,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:20,970 INFO L87 Difference]: Start difference. First operand 385 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:21,054 INFO L93 Difference]: Finished difference Result 548 states and 1653 transitions. [2021-03-11 14:36:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:21,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:21,056 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:36:21,056 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:21,056 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:21,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 387. [2021-03-11 14:36:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4922279792746114) internal successors, (1348), 386 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1348 transitions. [2021-03-11 14:36:21,062 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:21,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:21,062 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1348 transitions. [2021-03-11 14:36:21,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1348 transitions. [2021-03-11 14:36:21,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:21,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:21,063 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:21,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2021-03-11 14:36:21,063 INFO L428 AbstractCegarLoop]: === Iteration 374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:21,063 INFO L82 PathProgramCache]: Analyzing trace with hash -577894847, now seen corresponding path program 368 times [2021-03-11 14:36:21,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:21,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474718911] [2021-03-11 14:36:21,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:21,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:21,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:21,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:21,081 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:21,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:21,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:21,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:21,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:21,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:21,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:21,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:21,167 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:21,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:21,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474718911] [2021-03-11 14:36:21,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:21,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:21,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527097936] [2021-03-11 14:36:21,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:21,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:21,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:21,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:21,191 INFO L87 Difference]: Start difference. First operand 387 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:21,249 INFO L93 Difference]: Finished difference Result 546 states and 1648 transitions. [2021-03-11 14:36:21,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:21,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:21,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:21,250 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:36:21,250 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:36:21,250 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:36:21,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 386. [2021-03-11 14:36:21,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.496103896103896) internal successors, (1346), 385 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1346 transitions. [2021-03-11 14:36:21,256 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:21,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:21,257 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1346 transitions. [2021-03-11 14:36:21,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,257 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1346 transitions. [2021-03-11 14:36:21,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:21,257 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:21,257 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:21,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2021-03-11 14:36:21,257 INFO L428 AbstractCegarLoop]: === Iteration 375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:21,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:21,257 INFO L82 PathProgramCache]: Analyzing trace with hash 361704599, now seen corresponding path program 369 times [2021-03-11 14:36:21,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:21,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742456273] [2021-03-11 14:36:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:21,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:21,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:21,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:21,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:21,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:21,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:21,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:21,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:21,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:21,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:21,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:21,375 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:21,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:21,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:21,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742456273] [2021-03-11 14:36:21,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:21,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:21,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710919111] [2021-03-11 14:36:21,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:21,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:21,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:21,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:21,400 INFO L87 Difference]: Start difference. First operand 386 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:21,478 INFO L93 Difference]: Finished difference Result 555 states and 1668 transitions. [2021-03-11 14:36:21,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:21,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:21,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:21,479 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:36:21,479 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:36:21,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:36:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 389. [2021-03-11 14:36:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.481958762886598) internal successors, (1351), 388 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1351 transitions. [2021-03-11 14:36:21,486 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1351 transitions. Word has length 22 [2021-03-11 14:36:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:21,486 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1351 transitions. [2021-03-11 14:36:21,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1351 transitions. [2021-03-11 14:36:21,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:21,486 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:21,486 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:21,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2021-03-11 14:36:21,487 INFO L428 AbstractCegarLoop]: === Iteration 376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:21,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:21,487 INFO L82 PathProgramCache]: Analyzing trace with hash -690106623, now seen corresponding path program 370 times [2021-03-11 14:36:21,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:21,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252835848] [2021-03-11 14:36:21,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:21,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:21,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:21,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:21,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:21,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:21,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:21,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:21,548 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:21,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:21,579 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:21,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:21,603 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:21,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:21,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252835848] [2021-03-11 14:36:21,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:21,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:21,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508960605] [2021-03-11 14:36:21,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:21,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:21,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:21,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:21,628 INFO L87 Difference]: Start difference. First operand 389 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:21,710 INFO L93 Difference]: Finished difference Result 558 states and 1671 transitions. [2021-03-11 14:36:21,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:21,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:21,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:21,711 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:36:21,711 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:21,712 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:21,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 386. [2021-03-11 14:36:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4935064935064934) internal successors, (1345), 385 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1345 transitions. [2021-03-11 14:36:21,718 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:21,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:21,718 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1345 transitions. [2021-03-11 14:36:21,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1345 transitions. [2021-03-11 14:36:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:21,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:21,718 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:21,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2021-03-11 14:36:21,718 INFO L428 AbstractCegarLoop]: === Iteration 377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:21,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1084241113, now seen corresponding path program 371 times [2021-03-11 14:36:21,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:21,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875854613] [2021-03-11 14:36:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:21,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:21,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:21,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:21,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:21,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:21,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:21,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:21,777 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:21,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:21,806 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:21,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:21,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:21,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:21,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875854613] [2021-03-11 14:36:21,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:21,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:21,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037772426] [2021-03-11 14:36:21,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:21,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:21,855 INFO L87 Difference]: Start difference. First operand 386 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:21,913 INFO L93 Difference]: Finished difference Result 549 states and 1653 transitions. [2021-03-11 14:36:21,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:21,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:21,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:21,915 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:36:21,915 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:36:21,915 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:36:21,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 387. [2021-03-11 14:36:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4870466321243523) internal successors, (1346), 386 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1346 transitions. [2021-03-11 14:36:21,921 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:21,921 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1346 transitions. [2021-03-11 14:36:21,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1346 transitions. [2021-03-11 14:36:21,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:21,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:21,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:21,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-03-11 14:36:21,922 INFO L428 AbstractCegarLoop]: === Iteration 378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:21,922 INFO L82 PathProgramCache]: Analyzing trace with hash 2137640803, now seen corresponding path program 372 times [2021-03-11 14:36:21,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:21,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260303471] [2021-03-11 14:36:21,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:21,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:21,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:21,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:21,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:21,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:21,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:21,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:21,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:21,982 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:21,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:22,010 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:22,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:22,036 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:22,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:22,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260303471] [2021-03-11 14:36:22,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:22,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:22,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533633661] [2021-03-11 14:36:22,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:22,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:22,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:22,060 INFO L87 Difference]: Start difference. First operand 387 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:22,136 INFO L93 Difference]: Finished difference Result 554 states and 1662 transitions. [2021-03-11 14:36:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:22,138 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:22,138 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:36:22,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:36:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 385. [2021-03-11 14:36:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4973958333333335) internal successors, (1343), 384 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1343 transitions. [2021-03-11 14:36:22,144 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:22,144 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1343 transitions. [2021-03-11 14:36:22,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1343 transitions. [2021-03-11 14:36:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:22,145 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:22,145 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:22,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-03-11 14:36:22,145 INFO L428 AbstractCegarLoop]: === Iteration 379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash -406790765, now seen corresponding path program 373 times [2021-03-11 14:36:22,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:22,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410906855] [2021-03-11 14:36:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:22,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:22,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:22,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:22,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:22,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:22,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:22,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:22,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:22,224 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:22,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:22,249 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:22,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:22,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:22,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410906855] [2021-03-11 14:36:22,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:22,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:22,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628065367] [2021-03-11 14:36:22,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:22,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:22,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:22,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:22,273 INFO L87 Difference]: Start difference. First operand 385 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:22,357 INFO L93 Difference]: Finished difference Result 554 states and 1669 transitions. [2021-03-11 14:36:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:22,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:22,358 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:22,358 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:36:22,358 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:36:22,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 389. [2021-03-11 14:36:22,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4871134020618557) internal successors, (1353), 388 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1353 transitions. [2021-03-11 14:36:22,365 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1353 transitions. Word has length 22 [2021-03-11 14:36:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:22,365 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1353 transitions. [2021-03-11 14:36:22,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1353 transitions. [2021-03-11 14:36:22,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:22,365 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:22,365 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:22,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-03-11 14:36:22,365 INFO L428 AbstractCegarLoop]: === Iteration 380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:22,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:22,366 INFO L82 PathProgramCache]: Analyzing trace with hash -909332317, now seen corresponding path program 374 times [2021-03-11 14:36:22,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:22,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485747320] [2021-03-11 14:36:22,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:22,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:22,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:22,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:22,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:22,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:22,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:22,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:22,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:22,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:22,444 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:22,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:22,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:22,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485747320] [2021-03-11 14:36:22,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:22,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:22,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366904581] [2021-03-11 14:36:22,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:22,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:22,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:22,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:22,493 INFO L87 Difference]: Start difference. First operand 389 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:22,569 INFO L93 Difference]: Finished difference Result 553 states and 1665 transitions. [2021-03-11 14:36:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:22,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:22,570 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:36:22,570 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:22,570 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 387. [2021-03-11 14:36:22,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4922279792746114) internal successors, (1348), 386 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1348 transitions. [2021-03-11 14:36:22,576 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:22,576 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1348 transitions. [2021-03-11 14:36:22,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1348 transitions. [2021-03-11 14:36:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:22,577 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:22,577 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:22,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2021-03-11 14:36:22,577 INFO L428 AbstractCegarLoop]: === Iteration 381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:22,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2007228619, now seen corresponding path program 375 times [2021-03-11 14:36:22,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:22,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000789781] [2021-03-11 14:36:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:22,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:22,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:22,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:22,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:22,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:22,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:22,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:22,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:22,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:22,668 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:22,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:22,692 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:22,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:22,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:22,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000789781] [2021-03-11 14:36:22,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:22,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:22,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911871110] [2021-03-11 14:36:22,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:22,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:22,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:22,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:22,724 INFO L87 Difference]: Start difference. First operand 387 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:22,798 INFO L93 Difference]: Finished difference Result 559 states and 1678 transitions. [2021-03-11 14:36:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:22,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:22,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:22,799 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:36:22,799 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:36:22,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:36:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 390. [2021-03-11 14:36:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4781491002570695) internal successors, (1353), 389 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1353 transitions. [2021-03-11 14:36:22,806 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1353 transitions. Word has length 22 [2021-03-11 14:36:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:22,806 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1353 transitions. [2021-03-11 14:36:22,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1353 transitions. [2021-03-11 14:36:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:22,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:22,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:22,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2021-03-11 14:36:22,807 INFO L428 AbstractCegarLoop]: === Iteration 382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:22,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:22,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1235927455, now seen corresponding path program 376 times [2021-03-11 14:36:22,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:22,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319552444] [2021-03-11 14:36:22,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:22,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:22,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:22,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:22,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:22,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:22,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:22,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:22,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:22,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:22,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:22,897 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:22,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:22,922 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:22,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:22,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319552444] [2021-03-11 14:36:22,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:22,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:22,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022078961] [2021-03-11 14:36:22,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:22,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:22,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:22,946 INFO L87 Difference]: Start difference. First operand 390 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:23,023 INFO L93 Difference]: Finished difference Result 562 states and 1681 transitions. [2021-03-11 14:36:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:23,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:23,025 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:36:23,025 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:36:23,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:23,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:36:23,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 387. [2021-03-11 14:36:23,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4870466321243523) internal successors, (1346), 386 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1346 transitions. [2021-03-11 14:36:23,031 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:23,031 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1346 transitions. [2021-03-11 14:36:23,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1346 transitions. [2021-03-11 14:36:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:23,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:23,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:23,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2021-03-11 14:36:23,032 INFO L428 AbstractCegarLoop]: === Iteration 383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:23,032 INFO L82 PathProgramCache]: Analyzing trace with hash 234220513, now seen corresponding path program 377 times [2021-03-11 14:36:23,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:23,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252507885] [2021-03-11 14:36:23,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:23,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:23,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:23,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:23,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:23,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:23,068 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:23,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:23,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:23,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:23,121 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:23,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:23,146 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:23,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:23,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252507885] [2021-03-11 14:36:23,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:23,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:23,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833330288] [2021-03-11 14:36:23,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:23,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:23,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:23,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:23,170 INFO L87 Difference]: Start difference. First operand 387 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:23,250 INFO L93 Difference]: Finished difference Result 556 states and 1669 transitions. [2021-03-11 14:36:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:23,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:23,251 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:23,251 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:36:23,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:36:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 389. [2021-03-11 14:36:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4768041237113403) internal successors, (1349), 388 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1349 transitions. [2021-03-11 14:36:23,257 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:23,258 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1349 transitions. [2021-03-11 14:36:23,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1349 transitions. [2021-03-11 14:36:23,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:23,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:23,258 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:23,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2021-03-11 14:36:23,260 INFO L428 AbstractCegarLoop]: === Iteration 384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:23,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1457958769, now seen corresponding path program 378 times [2021-03-11 14:36:23,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:23,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721722149] [2021-03-11 14:36:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:23,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:23,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:23,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:23,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:23,304 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:23,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:23,328 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:23,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:23,358 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:23,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:23,383 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:23,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:23,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:23,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721722149] [2021-03-11 14:36:23,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:23,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:23,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168338799] [2021-03-11 14:36:23,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:23,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:23,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:23,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:23,407 INFO L87 Difference]: Start difference. First operand 389 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:23,492 INFO L93 Difference]: Finished difference Result 560 states and 1675 transitions. [2021-03-11 14:36:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:23,497 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:36:23,497 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:36:23,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:36:23,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 385. [2021-03-11 14:36:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4947916666666665) internal successors, (1342), 384 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1342 transitions. [2021-03-11 14:36:23,504 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:23,504 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1342 transitions. [2021-03-11 14:36:23,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1342 transitions. [2021-03-11 14:36:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:23,504 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:23,504 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:23,505 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2021-03-11 14:36:23,505 INFO L428 AbstractCegarLoop]: === Iteration 385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:23,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash 73297601, now seen corresponding path program 379 times [2021-03-11 14:36:23,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:23,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446981212] [2021-03-11 14:36:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:23,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:23,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:23,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:23,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:23,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:23,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:23,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:23,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:23,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:23,585 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:23,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:23,611 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:23,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:23,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:23,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446981212] [2021-03-11 14:36:23,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:23,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:23,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190572806] [2021-03-11 14:36:23,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:23,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:23,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:23,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:23,635 INFO L87 Difference]: Start difference. First operand 385 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:23,702 INFO L93 Difference]: Finished difference Result 543 states and 1640 transitions. [2021-03-11 14:36:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:23,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:23,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:23,703 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:36:23,703 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:36:23,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:23,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:36:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 387. [2021-03-11 14:36:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4870466321243523) internal successors, (1346), 386 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1346 transitions. [2021-03-11 14:36:23,710 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:23,710 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1346 transitions. [2021-03-11 14:36:23,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1346 transitions. [2021-03-11 14:36:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:23,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:23,711 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:23,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2021-03-11 14:36:23,711 INFO L428 AbstractCegarLoop]: === Iteration 386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:23,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1684238559, now seen corresponding path program 380 times [2021-03-11 14:36:23,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:23,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269565497] [2021-03-11 14:36:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:23,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:23,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:23,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:23,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:23,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:23,747 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:23,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:23,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:23,791 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:23,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:23,819 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:23,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:23,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269565497] [2021-03-11 14:36:23,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:23,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:23,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461404252] [2021-03-11 14:36:23,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:23,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:23,843 INFO L87 Difference]: Start difference. First operand 387 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:23,928 INFO L93 Difference]: Finished difference Result 544 states and 1641 transitions. [2021-03-11 14:36:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:23,929 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:36:23,929 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:36:23,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:23,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:36:23,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 386. [2021-03-11 14:36:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4909090909090907) internal successors, (1344), 385 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1344 transitions. [2021-03-11 14:36:23,935 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:23,936 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1344 transitions. [2021-03-11 14:36:23,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1344 transitions. [2021-03-11 14:36:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:23,936 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:23,936 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:23,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2021-03-11 14:36:23,936 INFO L428 AbstractCegarLoop]: === Iteration 387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:23,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:23,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1527140253, now seen corresponding path program 381 times [2021-03-11 14:36:23,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:23,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772209496] [2021-03-11 14:36:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:23,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:23,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:23,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:23,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:23,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:23,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:23,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:23,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:23,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:23,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:24,024 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:24,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:24,050 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:24,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:24,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772209496] [2021-03-11 14:36:24,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:24,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:24,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182982314] [2021-03-11 14:36:24,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:24,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:24,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:24,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:24,074 INFO L87 Difference]: Start difference. First operand 386 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:24,131 INFO L93 Difference]: Finished difference Result 547 states and 1647 transitions. [2021-03-11 14:36:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:24,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:24,133 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:36:24,133 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:36:24,133 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:24,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:36:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 387. [2021-03-11 14:36:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:24,139 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:24,139 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:24,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:24,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:24,139 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:24,139 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:24,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2021-03-11 14:36:24,140 INFO L428 AbstractCegarLoop]: === Iteration 388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:24,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1694741663, now seen corresponding path program 382 times [2021-03-11 14:36:24,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:24,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125421616] [2021-03-11 14:36:24,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:24,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:24,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:24,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:24,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:24,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:24,176 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:24,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:24,199 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:24,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:24,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:24,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:24,252 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:24,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:24,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125421616] [2021-03-11 14:36:24,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:24,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:24,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457935629] [2021-03-11 14:36:24,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:24,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:24,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:24,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:24,276 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:24,355 INFO L93 Difference]: Finished difference Result 552 states and 1656 transitions. [2021-03-11 14:36:24,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:24,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:24,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:24,356 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:36:24,356 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:24,357 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 386. [2021-03-11 14:36:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4883116883116885) internal successors, (1343), 385 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1343 transitions. [2021-03-11 14:36:24,363 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:24,363 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1343 transitions. [2021-03-11 14:36:24,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1343 transitions. [2021-03-11 14:36:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:24,363 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:24,363 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:24,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2021-03-11 14:36:24,363 INFO L428 AbstractCegarLoop]: === Iteration 389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:24,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1516637149, now seen corresponding path program 383 times [2021-03-11 14:36:24,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:24,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525118820] [2021-03-11 14:36:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:24,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:24,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:24,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:24,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:24,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:24,400 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:24,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:24,423 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:24,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:24,453 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:24,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:24,478 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:24,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:24,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525118820] [2021-03-11 14:36:24,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:24,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:24,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825509995] [2021-03-11 14:36:24,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:24,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:24,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:24,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:24,502 INFO L87 Difference]: Start difference. First operand 386 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:24,576 INFO L93 Difference]: Finished difference Result 550 states and 1653 transitions. [2021-03-11 14:36:24,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:24,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:24,578 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:36:24,578 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:36:24,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:24,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:36:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 388. [2021-03-11 14:36:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4780361757105944) internal successors, (1346), 387 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1346 transitions. [2021-03-11 14:36:24,584 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:24,584 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1346 transitions. [2021-03-11 14:36:24,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,584 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1346 transitions. [2021-03-11 14:36:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:24,585 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:24,585 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:24,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2021-03-11 14:36:24,585 INFO L428 AbstractCegarLoop]: === Iteration 390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:24,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:24,585 INFO L82 PathProgramCache]: Analyzing trace with hash 94303809, now seen corresponding path program 384 times [2021-03-11 14:36:24,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:24,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756442665] [2021-03-11 14:36:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:24,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:24,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:24,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:24,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:24,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:24,622 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:24,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:24,645 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:24,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:24,675 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:24,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:24,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:24,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:24,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756442665] [2021-03-11 14:36:24,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:24,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:24,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150918617] [2021-03-11 14:36:24,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:24,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:24,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:24,724 INFO L87 Difference]: Start difference. First operand 388 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:24,803 INFO L93 Difference]: Finished difference Result 554 states and 1659 transitions. [2021-03-11 14:36:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:24,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:24,805 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:24,805 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:36:24,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:24,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:36:24,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 384. [2021-03-11 14:36:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4986945169712795) internal successors, (1340), 383 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1340 transitions. [2021-03-11 14:36:24,811 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1340 transitions. Word has length 22 [2021-03-11 14:36:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:24,811 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1340 transitions. [2021-03-11 14:36:24,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1340 transitions. [2021-03-11 14:36:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:24,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:24,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:24,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2021-03-11 14:36:24,812 INFO L428 AbstractCegarLoop]: === Iteration 391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash -123506711, now seen corresponding path program 385 times [2021-03-11 14:36:24,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:24,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381078688] [2021-03-11 14:36:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:24,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:24,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:24,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:24,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:24,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:24,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:24,841 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:24,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:24,857 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:24,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:24,880 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:24,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:24,904 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:24,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:24,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381078688] [2021-03-11 14:36:24,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:24,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:24,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003293823] [2021-03-11 14:36:24,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:24,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:24,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:24,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:24,928 INFO L87 Difference]: Start difference. First operand 384 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,005 INFO L93 Difference]: Finished difference Result 542 states and 1640 transitions. [2021-03-11 14:36:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,007 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:36:25,007 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:36:25,007 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:36:25,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 387. [2021-03-11 14:36:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4922279792746114) internal successors, (1348), 386 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1348 transitions. [2021-03-11 14:36:25,013 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,013 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1348 transitions. [2021-03-11 14:36:25,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1348 transitions. [2021-03-11 14:36:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,013 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,013 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2021-03-11 14:36:25,014 INFO L428 AbstractCegarLoop]: === Iteration 392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,014 INFO L82 PathProgramCache]: Analyzing trace with hash 30985431, now seen corresponding path program 386 times [2021-03-11 14:36:25,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365108213] [2021-03-11 14:36:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:25,032 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:25,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:25,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:25,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:25,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:25,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:25,078 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:25,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:25,103 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:25,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:25,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365108213] [2021-03-11 14:36:25,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:25,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:25,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387482867] [2021-03-11 14:36:25,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:25,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:25,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:25,127 INFO L87 Difference]: Start difference. First operand 387 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,186 INFO L93 Difference]: Finished difference Result 540 states and 1635 transitions. [2021-03-11 14:36:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,187 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:36:25,188 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:36:25,188 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:36:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 386. [2021-03-11 14:36:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.496103896103896) internal successors, (1346), 385 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1346 transitions. [2021-03-11 14:36:25,194 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,194 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1346 transitions. [2021-03-11 14:36:25,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1346 transitions. [2021-03-11 14:36:25,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,194 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,194 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2021-03-11 14:36:25,195 INFO L428 AbstractCegarLoop]: === Iteration 393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1723944565, now seen corresponding path program 387 times [2021-03-11 14:36:25,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726155932] [2021-03-11 14:36:25,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:25,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:25,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:25,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:25,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:25,240 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:25,259 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:25,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:25,284 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:25,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:25,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726155932] [2021-03-11 14:36:25,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:25,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:25,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249048368] [2021-03-11 14:36:25,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:25,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:25,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:25,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:25,308 INFO L87 Difference]: Start difference. First operand 386 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,388 INFO L93 Difference]: Finished difference Result 544 states and 1644 transitions. [2021-03-11 14:36:25,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,389 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:36:25,389 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:36:25,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:36:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 388. [2021-03-11 14:36:25,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4857881136950906) internal successors, (1349), 387 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1349 transitions. [2021-03-11 14:36:25,395 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:25,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,395 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1349 transitions. [2021-03-11 14:36:25,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,395 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1349 transitions. [2021-03-11 14:36:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2021-03-11 14:36:25,396 INFO L428 AbstractCegarLoop]: === Iteration 394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2068481179, now seen corresponding path program 388 times [2021-03-11 14:36:25,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765030951] [2021-03-11 14:36:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:25,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:25,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:25,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:25,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:25,441 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:25,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:25,461 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:25,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:25,485 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:25,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:25,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:25,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765030951] [2021-03-11 14:36:25,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:25,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:25,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396370034] [2021-03-11 14:36:25,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:25,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:25,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:25,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:25,509 INFO L87 Difference]: Start difference. First operand 388 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,587 INFO L93 Difference]: Finished difference Result 543 states and 1640 transitions. [2021-03-11 14:36:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,588 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:36:25,588 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:36:25,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:36:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 386. [2021-03-11 14:36:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4935064935064934) internal successors, (1345), 385 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1345 transitions. [2021-03-11 14:36:25,595 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,595 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1345 transitions. [2021-03-11 14:36:25,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1345 transitions. [2021-03-11 14:36:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2021-03-11 14:36:25,595 INFO L428 AbstractCegarLoop]: === Iteration 395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1125077019, now seen corresponding path program 389 times [2021-03-11 14:36:25,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40342438] [2021-03-11 14:36:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:25,614 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:25,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:25,625 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:25,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:25,641 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:25,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:25,661 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:25,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:25,687 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:25,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:25,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40342438] [2021-03-11 14:36:25,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:25,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:25,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100050807] [2021-03-11 14:36:25,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:25,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:25,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:25,711 INFO L87 Difference]: Start difference. First operand 386 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,773 INFO L93 Difference]: Finished difference Result 539 states and 1632 transitions. [2021-03-11 14:36:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,775 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:36:25,775 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:36:25,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 123.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:36:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 387. [2021-03-11 14:36:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4870466321243523) internal successors, (1346), 386 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1346 transitions. [2021-03-11 14:36:25,781 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,781 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1346 transitions. [2021-03-11 14:36:25,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1346 transitions. [2021-03-11 14:36:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,782 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2021-03-11 14:36:25,782 INFO L428 AbstractCegarLoop]: === Iteration 396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1558949319, now seen corresponding path program 390 times [2021-03-11 14:36:25,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197203769] [2021-03-11 14:36:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:25,801 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:25,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:25,812 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:36:25,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:36:25,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:25,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:25,848 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:25,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:25,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:25,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:25,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197203769] [2021-03-11 14:36:25,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:25,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:25,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825631096] [2021-03-11 14:36:25,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:25,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:25,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:25,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:25,897 INFO L87 Difference]: Start difference. First operand 387 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:25,977 INFO L93 Difference]: Finished difference Result 540 states and 1633 transitions. [2021-03-11 14:36:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:25,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:25,978 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:36:25,978 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:36:25,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:25,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:36:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 385. [2021-03-11 14:36:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4973958333333335) internal successors, (1343), 384 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1343 transitions. [2021-03-11 14:36:25,984 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:25,984 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1343 transitions. [2021-03-11 14:36:25,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1343 transitions. [2021-03-11 14:36:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:25,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:25,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:25,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2021-03-11 14:36:25,985 INFO L428 AbstractCegarLoop]: === Iteration 397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1163742509, now seen corresponding path program 391 times [2021-03-11 14:36:25,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:25,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805033544] [2021-03-11 14:36:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:25,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:25,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:25,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:25,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:26,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:26,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:26,030 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:26,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:26,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:26,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:26,074 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:26,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805033544] [2021-03-11 14:36:26,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:26,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:26,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758979713] [2021-03-11 14:36:26,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:26,098 INFO L87 Difference]: Start difference. First operand 385 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:26,174 INFO L93 Difference]: Finished difference Result 546 states and 1648 transitions. [2021-03-11 14:36:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:26,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:26,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:26,175 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:36:26,175 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:36:26,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:26,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:36:26,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 387. [2021-03-11 14:36:26,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:36:26,181 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:26,181 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:36:26,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:36:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:26,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:26,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:26,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2021-03-11 14:36:26,182 INFO L428 AbstractCegarLoop]: === Iteration 398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1009250367, now seen corresponding path program 392 times [2021-03-11 14:36:26,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:26,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632833937] [2021-03-11 14:36:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:26,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:26,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:26,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:26,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:26,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:26,225 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:26,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:26,245 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:26,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:26,270 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:26,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:26,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632833937] [2021-03-11 14:36:26,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:26,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:26,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793176746] [2021-03-11 14:36:26,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:26,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:26,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:26,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:26,294 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:26,353 INFO L93 Difference]: Finished difference Result 544 states and 1643 transitions. [2021-03-11 14:36:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:26,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:26,354 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:36:26,354 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:36:26,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:36:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 386. [2021-03-11 14:36:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4935064935064934) internal successors, (1345), 385 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1345 transitions. [2021-03-11 14:36:26,360 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:26,360 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1345 transitions. [2021-03-11 14:36:26,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,360 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1345 transitions. [2021-03-11 14:36:26,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:26,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:26,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:26,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2021-03-11 14:36:26,361 INFO L428 AbstractCegarLoop]: === Iteration 399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:26,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:26,361 INFO L82 PathProgramCache]: Analyzing trace with hash 943041611, now seen corresponding path program 393 times [2021-03-11 14:36:26,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:26,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135922721] [2021-03-11 14:36:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:26,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:26,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:26,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,379 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:26,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:26,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:26,405 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:26,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:26,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:26,449 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:26,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:26,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135922721] [2021-03-11 14:36:26,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:26,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:26,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519379401] [2021-03-11 14:36:26,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:26,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:26,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:26,473 INFO L87 Difference]: Start difference. First operand 386 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:26,553 INFO L93 Difference]: Finished difference Result 552 states and 1661 transitions. [2021-03-11 14:36:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:26,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:26,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:26,555 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:36:26,555 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:26,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:26,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 389. [2021-03-11 14:36:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.479381443298969) internal successors, (1350), 388 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1350 transitions. [2021-03-11 14:36:26,561 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:26,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:26,561 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1350 transitions. [2021-03-11 14:36:26,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1350 transitions. [2021-03-11 14:36:26,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:26,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:26,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:26,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2021-03-11 14:36:26,562 INFO L428 AbstractCegarLoop]: === Iteration 400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:26,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:26,562 INFO L82 PathProgramCache]: Analyzing trace with hash 2100366209, now seen corresponding path program 394 times [2021-03-11 14:36:26,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:26,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952032553] [2021-03-11 14:36:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:26,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:26,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:26,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,580 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:26,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:26,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:26,606 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:26,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:26,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:26,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:26,650 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:26,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:26,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952032553] [2021-03-11 14:36:26,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:26,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121262769] [2021-03-11 14:36:26,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:26,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:26,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:26,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:26,674 INFO L87 Difference]: Start difference. First operand 389 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:26,755 INFO L93 Difference]: Finished difference Result 554 states and 1662 transitions. [2021-03-11 14:36:26,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:26,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:26,756 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:26,756 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:36:26,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:36:26,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 386. [2021-03-11 14:36:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4909090909090907) internal successors, (1344), 385 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1344 transitions. [2021-03-11 14:36:26,762 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:26,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:26,763 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1344 transitions. [2021-03-11 14:36:26,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1344 transitions. [2021-03-11 14:36:26,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:26,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:26,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:26,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2021-03-11 14:36:26,763 INFO L428 AbstractCegarLoop]: === Iteration 401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:26,763 INFO L82 PathProgramCache]: Analyzing trace with hash -502904101, now seen corresponding path program 395 times [2021-03-11 14:36:26,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:26,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152328275] [2021-03-11 14:36:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:26,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:26,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:26,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:26,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:26,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:26,809 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:26,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:26,840 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:26,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:26,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:26,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:26,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:26,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152328275] [2021-03-11 14:36:26,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:26,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:26,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160802456] [2021-03-11 14:36:26,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:26,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:26,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:26,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:26,890 INFO L87 Difference]: Start difference. First operand 386 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:26,959 INFO L93 Difference]: Finished difference Result 546 states and 1646 transitions. [2021-03-11 14:36:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:26,960 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:36:26,960 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:26,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:26,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 387. [2021-03-11 14:36:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:26,966 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:26,967 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:26,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:26,967 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:26,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:26,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:26,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2021-03-11 14:36:26,967 INFO L428 AbstractCegarLoop]: === Iteration 402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:26,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1643266659, now seen corresponding path program 396 times [2021-03-11 14:36:26,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:26,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092557298] [2021-03-11 14:36:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:26,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:26,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:26,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:26,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:26,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:26,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:27,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:27,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:27,016 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:27,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:27,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:27,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:27,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:27,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:27,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092557298] [2021-03-11 14:36:27,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:27,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:27,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136848395] [2021-03-11 14:36:27,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:27,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:27,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:27,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:27,095 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:27,174 INFO L93 Difference]: Finished difference Result 550 states and 1653 transitions. [2021-03-11 14:36:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:27,176 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:36:27,176 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:36:27,176 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:27,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:36:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 385. [2021-03-11 14:36:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4947916666666665) internal successors, (1342), 384 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1342 transitions. [2021-03-11 14:36:27,182 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:27,182 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1342 transitions. [2021-03-11 14:36:27,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1342 transitions. [2021-03-11 14:36:27,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:27,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:27,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:27,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2021-03-11 14:36:27,183 INFO L428 AbstractCegarLoop]: === Iteration 403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:27,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:27,183 INFO L82 PathProgramCache]: Analyzing trace with hash -838146285, now seen corresponding path program 397 times [2021-03-11 14:36:27,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:27,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700148566] [2021-03-11 14:36:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:27,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:27,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:27,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:27,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:27,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:27,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:27,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:27,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:27,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:27,247 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:27,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:27,272 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:27,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:27,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700148566] [2021-03-11 14:36:27,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:27,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:27,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129597741] [2021-03-11 14:36:27,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:27,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:27,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:27,296 INFO L87 Difference]: Start difference. First operand 385 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:27,370 INFO L93 Difference]: Finished difference Result 552 states and 1664 transitions. [2021-03-11 14:36:27,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:27,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:27,372 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:36:27,372 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:27,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 389. [2021-03-11 14:36:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.484536082474227) internal successors, (1352), 388 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1352 transitions. [2021-03-11 14:36:27,378 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1352 transitions. Word has length 22 [2021-03-11 14:36:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:27,378 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1352 transitions. [2021-03-11 14:36:27,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1352 transitions. [2021-03-11 14:36:27,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:27,378 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:27,378 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:27,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2021-03-11 14:36:27,379 INFO L428 AbstractCegarLoop]: === Iteration 404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:27,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:27,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1340687837, now seen corresponding path program 398 times [2021-03-11 14:36:27,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:27,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150861066] [2021-03-11 14:36:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:27,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:27,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:27,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:27,397 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:27,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:27,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:27,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:27,421 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:27,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:27,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:27,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:27,466 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:27,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:27,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150861066] [2021-03-11 14:36:27,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:27,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:27,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971004268] [2021-03-11 14:36:27,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:27,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:27,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:27,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:27,490 INFO L87 Difference]: Start difference. First operand 389 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:27,567 INFO L93 Difference]: Finished difference Result 551 states and 1660 transitions. [2021-03-11 14:36:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:27,569 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:36:27,569 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:36:27,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:36:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 387. [2021-03-11 14:36:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:36:27,575 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:27,575 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:36:27,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:36:27,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:27,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:27,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:27,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2021-03-11 14:36:27,576 INFO L428 AbstractCegarLoop]: === Iteration 405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:27,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1425891607, now seen corresponding path program 399 times [2021-03-11 14:36:27,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:27,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833629604] [2021-03-11 14:36:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:27,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:27,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:27,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:27,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:27,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:27,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:27,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:27,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:27,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:27,638 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:27,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:27,663 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:27,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:27,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833629604] [2021-03-11 14:36:27,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:27,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:27,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601347882] [2021-03-11 14:36:27,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:27,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:27,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:27,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:27,688 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:27,763 INFO L93 Difference]: Finished difference Result 556 states and 1671 transitions. [2021-03-11 14:36:27,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:27,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:27,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:27,764 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:27,764 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:36:27,764 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:36:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 390. [2021-03-11 14:36:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.475578406169666) internal successors, (1352), 389 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1352 transitions. [2021-03-11 14:36:27,770 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1352 transitions. Word has length 22 [2021-03-11 14:36:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:27,771 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1352 transitions. [2021-03-11 14:36:27,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1352 transitions. [2021-03-11 14:36:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:27,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:27,771 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:27,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2021-03-11 14:36:27,771 INFO L428 AbstractCegarLoop]: === Iteration 406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:27,772 INFO L82 PathProgramCache]: Analyzing trace with hash -268567009, now seen corresponding path program 400 times [2021-03-11 14:36:27,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:27,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116622111] [2021-03-11 14:36:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:27,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:27,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:27,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:27,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:27,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:27,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:27,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:27,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:27,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:27,834 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:27,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:27,858 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:27,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:27,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:27,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116622111] [2021-03-11 14:36:27,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:27,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:27,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021989205] [2021-03-11 14:36:27,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:27,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:27,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:27,882 INFO L87 Difference]: Start difference. First operand 390 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:27,961 INFO L93 Difference]: Finished difference Result 558 states and 1672 transitions. [2021-03-11 14:36:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:27,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:27,962 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:36:27,962 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:36:27,962 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:36:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 387. [2021-03-11 14:36:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:27,968 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:27,969 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:27,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:27,969 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:27,969 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:27,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2021-03-11 14:36:27,969 INFO L428 AbstractCegarLoop]: === Iteration 407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash -260153631, now seen corresponding path program 401 times [2021-03-11 14:36:27,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:27,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17038675] [2021-03-11 14:36:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:27,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:27,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:27,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:27,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:27,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:27,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:28,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:28,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:28,016 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:28,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:28,050 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:28,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:28,080 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:28,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:28,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:28,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17038675] [2021-03-11 14:36:28,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:28,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:28,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282687335] [2021-03-11 14:36:28,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:28,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:28,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:28,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:28,104 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:28,180 INFO L93 Difference]: Finished difference Result 553 states and 1662 transitions. [2021-03-11 14:36:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:28,181 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:36:28,181 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:36:28,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:36:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 389. [2021-03-11 14:36:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4742268041237114) internal successors, (1348), 388 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1348 transitions. [2021-03-11 14:36:28,188 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:28,188 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1348 transitions. [2021-03-11 14:36:28,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1348 transitions. [2021-03-11 14:36:28,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:28,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:28,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:28,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2021-03-11 14:36:28,188 INFO L428 AbstractCegarLoop]: === Iteration 408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:28,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:28,188 INFO L82 PathProgramCache]: Analyzing trace with hash 311301175, now seen corresponding path program 402 times [2021-03-11 14:36:28,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:28,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238237221] [2021-03-11 14:36:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:28,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:28,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:28,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:28,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:28,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:28,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:28,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:28,232 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:28,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:28,265 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:28,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:28,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:28,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:28,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238237221] [2021-03-11 14:36:28,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:28,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:28,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507203599] [2021-03-11 14:36:28,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:28,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:28,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:28,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:28,313 INFO L87 Difference]: Start difference. First operand 389 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:28,391 INFO L93 Difference]: Finished difference Result 556 states and 1666 transitions. [2021-03-11 14:36:28,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:28,392 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:28,392 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:36:28,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:36:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 385. [2021-03-11 14:36:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4921875) internal successors, (1341), 384 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1341 transitions. [2021-03-11 14:36:28,399 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:28,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:28,399 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1341 transitions. [2021-03-11 14:36:28,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,399 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1341 transitions. [2021-03-11 14:36:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:28,399 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:28,399 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:28,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2021-03-11 14:36:28,399 INFO L428 AbstractCegarLoop]: === Iteration 409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:28,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:28,400 INFO L82 PathProgramCache]: Analyzing trace with hash -358057919, now seen corresponding path program 403 times [2021-03-11 14:36:28,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:28,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008694926] [2021-03-11 14:36:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:28,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:28,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:28,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:28,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:28,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:28,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:28,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:28,455 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:28,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:28,475 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:28,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:28,500 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:28,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:28,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008694926] [2021-03-11 14:36:28,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:28,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:28,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883206053] [2021-03-11 14:36:28,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:28,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:28,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:28,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:28,524 INFO L87 Difference]: Start difference. First operand 385 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:28,581 INFO L93 Difference]: Finished difference Result 541 states and 1635 transitions. [2021-03-11 14:36:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:28,583 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:36:28,583 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:36:28,583 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 131.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:36:28,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 387. [2021-03-11 14:36:28,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:28,589 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:28,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:28,589 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:28,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,589 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:28,589 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:28,589 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:28,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2021-03-11 14:36:28,590 INFO L428 AbstractCegarLoop]: === Iteration 410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:28,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:28,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1252883039, now seen corresponding path program 404 times [2021-03-11 14:36:28,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:28,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658367276] [2021-03-11 14:36:28,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:28,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:28,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:28,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:28,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:28,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:28,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:28,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:28,645 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:28,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:28,666 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:28,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:28,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:28,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:28,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658367276] [2021-03-11 14:36:28,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:28,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:28,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624245338] [2021-03-11 14:36:28,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:28,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:28,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:28,714 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:28,792 INFO L93 Difference]: Finished difference Result 542 states and 1636 transitions. [2021-03-11 14:36:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:28,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:28,793 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:36:28,793 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:36:28,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:36:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 386. [2021-03-11 14:36:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4883116883116885) internal successors, (1343), 385 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1343 transitions. [2021-03-11 14:36:28,799 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:28,799 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1343 transitions. [2021-03-11 14:36:28,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,799 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1343 transitions. [2021-03-11 14:36:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:28,800 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:28,800 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:28,800 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2021-03-11 14:36:28,800 INFO L428 AbstractCegarLoop]: === Iteration 411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash -945803241, now seen corresponding path program 405 times [2021-03-11 14:36:28,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:28,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528466004] [2021-03-11 14:36:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:28,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:28,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:28,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:28,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:28,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:28,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:28,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:28,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:28,856 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:28,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:28,886 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:28,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:28,911 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:28,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:28,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528466004] [2021-03-11 14:36:28,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:28,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:28,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958873512] [2021-03-11 14:36:28,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:28,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:28,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:28,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:28,935 INFO L87 Difference]: Start difference. First operand 386 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:28,995 INFO L93 Difference]: Finished difference Result 544 states and 1640 transitions. [2021-03-11 14:36:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:28,996 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:36:28,996 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:36:28,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:28,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:36:29,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 387. [2021-03-11 14:36:29,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:36:29,002 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:29,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:29,002 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:36:29,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:36:29,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:29,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:29,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:29,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2021-03-11 14:36:29,003 INFO L428 AbstractCegarLoop]: === Iteration 412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1200367519, now seen corresponding path program 406 times [2021-03-11 14:36:29,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:29,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979495209] [2021-03-11 14:36:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:29,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:29,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:29,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:29,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:29,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:29,032 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:29,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:29,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:29,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:29,103 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:29,127 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:29,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979495209] [2021-03-11 14:36:29,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:29,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:29,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343592353] [2021-03-11 14:36:29,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:29,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:29,158 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:29,245 INFO L93 Difference]: Finished difference Result 548 states and 1647 transitions. [2021-03-11 14:36:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:29,246 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:36:29,246 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:36:29,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:36:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 386. [2021-03-11 14:36:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4857142857142858) internal successors, (1342), 385 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1342 transitions. [2021-03-11 14:36:29,252 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:29,252 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1342 transitions. [2021-03-11 14:36:29,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1342 transitions. [2021-03-11 14:36:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:29,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:29,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:29,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2021-03-11 14:36:29,253 INFO L428 AbstractCegarLoop]: === Iteration 413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:29,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:29,253 INFO L82 PathProgramCache]: Analyzing trace with hash -935300137, now seen corresponding path program 407 times [2021-03-11 14:36:29,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:29,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344008410] [2021-03-11 14:36:29,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:29,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:29,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:29,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:29,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:29,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:29,282 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:29,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:29,308 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:29,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:29,342 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:29,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:29,366 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:29,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:29,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344008410] [2021-03-11 14:36:29,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:29,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:29,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950526998] [2021-03-11 14:36:29,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:29,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:29,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:29,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:29,390 INFO L87 Difference]: Start difference. First operand 386 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:29,472 INFO L93 Difference]: Finished difference Result 547 states and 1646 transitions. [2021-03-11 14:36:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:29,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:29,474 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:36:29,474 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:29,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:29,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:29,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 388. [2021-03-11 14:36:29,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4754521963824287) internal successors, (1345), 387 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1345 transitions. [2021-03-11 14:36:29,480 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:29,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:29,480 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1345 transitions. [2021-03-11 14:36:29,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,480 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1345 transitions. [2021-03-11 14:36:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:29,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:29,480 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:29,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2021-03-11 14:36:29,480 INFO L428 AbstractCegarLoop]: === Iteration 414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:29,481 INFO L82 PathProgramCache]: Analyzing trace with hash -400070335, now seen corresponding path program 408 times [2021-03-11 14:36:29,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:29,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366058192] [2021-03-11 14:36:29,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:29,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:29,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:29,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:29,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:36:29,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:36:29,510 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:29,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:29,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:29,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:29,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:29,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:29,593 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:29,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:29,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366058192] [2021-03-11 14:36:29,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:29,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:29,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480926164] [2021-03-11 14:36:29,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:29,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:29,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:29,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:29,618 INFO L87 Difference]: Start difference. First operand 388 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:29,698 INFO L93 Difference]: Finished difference Result 550 states and 1650 transitions. [2021-03-11 14:36:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:29,699 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:36:29,699 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:36:29,699 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:36:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 384. [2021-03-11 14:36:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.496083550913838) internal successors, (1339), 383 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1339 transitions. [2021-03-11 14:36:29,705 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1339 transitions. Word has length 22 [2021-03-11 14:36:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:29,706 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1339 transitions. [2021-03-11 14:36:29,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1339 transitions. [2021-03-11 14:36:29,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:29,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:29,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:29,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2021-03-11 14:36:29,706 INFO L428 AbstractCegarLoop]: === Iteration 415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:29,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1380041641, now seen corresponding path program 409 times [2021-03-11 14:36:29,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:29,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715578680] [2021-03-11 14:36:29,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:29,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:29,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:29,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:29,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:29,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:29,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:29,758 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:29,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:29,778 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:29,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:29,802 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:29,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:29,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715578680] [2021-03-11 14:36:29,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:29,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:29,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771308090] [2021-03-11 14:36:29,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:29,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:29,826 INFO L87 Difference]: Start difference. First operand 384 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:29,903 INFO L93 Difference]: Finished difference Result 556 states and 1674 transitions. [2021-03-11 14:36:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:29,905 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:29,905 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:36:29,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:29,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:36:29,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 387. [2021-03-11 14:36:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:36:29,911 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:36:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:29,911 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:36:29,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:36:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:29,912 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:29,912 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:29,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2021-03-11 14:36:29,912 INFO L428 AbstractCegarLoop]: === Iteration 416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:29,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1534533783, now seen corresponding path program 410 times [2021-03-11 14:36:29,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:29,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019146559] [2021-03-11 14:36:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:29,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:29,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:29,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:29,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:29,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:29,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:29,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:29,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:29,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:29,984 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:29,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:30,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:30,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:30,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019146559] [2021-03-11 14:36:30,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:30,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:30,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056216318] [2021-03-11 14:36:30,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:30,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:30,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:30,033 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:30,094 INFO L93 Difference]: Finished difference Result 554 states and 1669 transitions. [2021-03-11 14:36:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:30,096 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:30,096 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:36:30,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:30,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:36:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 386. [2021-03-11 14:36:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4935064935064934) internal successors, (1345), 385 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1345 transitions. [2021-03-11 14:36:30,102 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:30,102 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1345 transitions. [2021-03-11 14:36:30,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1345 transitions. [2021-03-11 14:36:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:30,102 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:30,102 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:30,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2021-03-11 14:36:30,103 INFO L428 AbstractCegarLoop]: === Iteration 417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:30,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:30,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1820834067, now seen corresponding path program 411 times [2021-03-11 14:36:30,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:30,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39772982] [2021-03-11 14:36:30,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:30,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:30,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:30,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:30,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:30,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:30,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:30,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:30,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:30,186 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:30,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:30,218 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:30,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:30,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:30,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39772982] [2021-03-11 14:36:30,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:30,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:30,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100183167] [2021-03-11 14:36:30,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:30,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:30,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:30,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:30,242 INFO L87 Difference]: Start difference. First operand 386 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:30,327 INFO L93 Difference]: Finished difference Result 563 states and 1689 transitions. [2021-03-11 14:36:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:30,329 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:36:30,329 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:36:30,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:30,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:36:30,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 389. [2021-03-11 14:36:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.479381443298969) internal successors, (1350), 388 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1350 transitions. [2021-03-11 14:36:30,335 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:30,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:30,335 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1350 transitions. [2021-03-11 14:36:30,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,335 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1350 transitions. [2021-03-11 14:36:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:30,335 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:30,335 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:30,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2021-03-11 14:36:30,336 INFO L428 AbstractCegarLoop]: === Iteration 418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:30,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:30,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1422322007, now seen corresponding path program 412 times [2021-03-11 14:36:30,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:30,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322063070] [2021-03-11 14:36:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:30,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:30,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:30,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:30,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:30,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:30,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:30,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:30,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:30,420 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:30,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:30,444 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:30,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:30,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322063070] [2021-03-11 14:36:30,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:30,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:30,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141229420] [2021-03-11 14:36:30,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:30,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:30,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:30,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:30,468 INFO L87 Difference]: Start difference. First operand 389 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:30,546 INFO L93 Difference]: Finished difference Result 566 states and 1692 transitions. [2021-03-11 14:36:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:30,548 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:36:30,548 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:36:30,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:36:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 386. [2021-03-11 14:36:30,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4909090909090907) internal successors, (1344), 385 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1344 transitions. [2021-03-11 14:36:30,554 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:30,554 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1344 transitions. [2021-03-11 14:36:30,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1344 transitions. [2021-03-11 14:36:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:30,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:30,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:30,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2021-03-11 14:36:30,555 INFO L428 AbstractCegarLoop]: === Iteration 419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:30,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:30,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1028187517, now seen corresponding path program 413 times [2021-03-11 14:36:30,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:30,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856140158] [2021-03-11 14:36:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:30,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:30,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:30,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:30,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:30,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:30,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:30,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:30,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:30,635 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:30,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:30,661 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:30,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856140158] [2021-03-11 14:36:30,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:30,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:30,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179731926] [2021-03-11 14:36:30,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:30,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:30,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:30,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:30,685 INFO L87 Difference]: Start difference. First operand 386 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:30,744 INFO L93 Difference]: Finished difference Result 557 states and 1674 transitions. [2021-03-11 14:36:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:30,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:30,746 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:36:30,746 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:36:30,746 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:36:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 387. [2021-03-11 14:36:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:30,752 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:30,752 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:30,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:30,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:30,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:30,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2021-03-11 14:36:30,753 INFO L428 AbstractCegarLoop]: === Iteration 420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:30,753 INFO L82 PathProgramCache]: Analyzing trace with hash -44897863, now seen corresponding path program 414 times [2021-03-11 14:36:30,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:30,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552665961] [2021-03-11 14:36:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:30,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:30,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:30,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:30,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:30,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:30,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:30,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:30,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:30,833 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:30,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:30,859 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:30,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:30,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552665961] [2021-03-11 14:36:30,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:30,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:30,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399296041] [2021-03-11 14:36:30,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:30,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:30,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:30,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:30,883 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:30,968 INFO L93 Difference]: Finished difference Result 562 states and 1683 transitions. [2021-03-11 14:36:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:30,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:30,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:30,969 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:36:30,970 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:36:30,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:30,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:36:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 385. [2021-03-11 14:36:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4947916666666665) internal successors, (1342), 384 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1342 transitions. [2021-03-11 14:36:30,976 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:30,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:30,976 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1342 transitions. [2021-03-11 14:36:30,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1342 transitions. [2021-03-11 14:36:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:30,976 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:30,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:30,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2021-03-11 14:36:30,976 INFO L428 AbstractCegarLoop]: === Iteration 421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:30,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1586228235, now seen corresponding path program 415 times [2021-03-11 14:36:30,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:30,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908725673] [2021-03-11 14:36:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:30,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:30,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:30,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:30,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:30,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:31,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:31,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:31,040 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:31,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:31,065 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:31,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:31,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908725673] [2021-03-11 14:36:31,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:31,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:31,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864761176] [2021-03-11 14:36:31,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:31,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:31,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:31,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:31,089 INFO L87 Difference]: Start difference. First operand 385 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:31,169 INFO L93 Difference]: Finished difference Result 555 states and 1671 transitions. [2021-03-11 14:36:31,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:31,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:31,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:31,170 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:36:31,170 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:36:31,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:36:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 387. [2021-03-11 14:36:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4870466321243523) internal successors, (1346), 386 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1346 transitions. [2021-03-11 14:36:31,177 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:31,177 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1346 transitions. [2021-03-11 14:36:31,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1346 transitions. [2021-03-11 14:36:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:31,177 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:31,177 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:31,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2021-03-11 14:36:31,177 INFO L428 AbstractCegarLoop]: === Iteration 422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1431736093, now seen corresponding path program 416 times [2021-03-11 14:36:31,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:31,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468436360] [2021-03-11 14:36:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:31,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:31,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:31,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:31,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:31,223 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:31,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:31,243 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:31,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:31,269 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:31,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:31,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468436360] [2021-03-11 14:36:31,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:31,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785245977] [2021-03-11 14:36:31,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:31,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:31,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:31,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:31,297 INFO L87 Difference]: Start difference. First operand 387 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:31,360 INFO L93 Difference]: Finished difference Result 553 states and 1666 transitions. [2021-03-11 14:36:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:31,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:31,361 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:36:31,361 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:36:31,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:36:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 386. [2021-03-11 14:36:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4909090909090907) internal successors, (1344), 385 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1344 transitions. [2021-03-11 14:36:31,368 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:31,368 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1344 transitions. [2021-03-11 14:36:31,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1344 transitions. [2021-03-11 14:36:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:31,368 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:31,369 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:31,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2021-03-11 14:36:31,369 INFO L428 AbstractCegarLoop]: === Iteration 423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:31,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:31,369 INFO L82 PathProgramCache]: Analyzing trace with hash 520555885, now seen corresponding path program 417 times [2021-03-11 14:36:31,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:31,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512173459] [2021-03-11 14:36:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:31,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:31,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:31,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:31,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:31,413 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:31,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:31,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:31,457 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:31,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:31,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512173459] [2021-03-11 14:36:31,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:31,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:31,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323848949] [2021-03-11 14:36:31,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:31,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:31,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:31,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:31,482 INFO L87 Difference]: Start difference. First operand 386 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:31,560 INFO L93 Difference]: Finished difference Result 561 states and 1684 transitions. [2021-03-11 14:36:31,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:31,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:31,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:31,562 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:36:31,562 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:36:31,562 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:31,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:36:31,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 389. [2021-03-11 14:36:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4768041237113403) internal successors, (1349), 388 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1349 transitions. [2021-03-11 14:36:31,568 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:31,568 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1349 transitions. [2021-03-11 14:36:31,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1349 transitions. [2021-03-11 14:36:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:31,569 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:31,569 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:31,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2021-03-11 14:36:31,569 INFO L428 AbstractCegarLoop]: === Iteration 424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:31,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:31,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1677880483, now seen corresponding path program 418 times [2021-03-11 14:36:31,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:31,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877727092] [2021-03-11 14:36:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:31,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:31,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:31,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:31,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:31,612 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:31,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:31,631 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:31,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:31,656 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:31,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:31,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877727092] [2021-03-11 14:36:31,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:31,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:31,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428618453] [2021-03-11 14:36:31,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:31,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:31,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:31,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:31,681 INFO L87 Difference]: Start difference. First operand 389 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:31,763 INFO L93 Difference]: Finished difference Result 563 states and 1685 transitions. [2021-03-11 14:36:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:31,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:31,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:31,764 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:36:31,764 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:36:31,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:36:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 386. [2021-03-11 14:36:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4883116883116885) internal successors, (1343), 385 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1343 transitions. [2021-03-11 14:36:31,771 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:31,771 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1343 transitions. [2021-03-11 14:36:31,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1343 transitions. [2021-03-11 14:36:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:31,771 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:31,771 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:31,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable423 [2021-03-11 14:36:31,771 INFO L428 AbstractCegarLoop]: === Iteration 425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:31,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:31,772 INFO L82 PathProgramCache]: Analyzing trace with hash -925389827, now seen corresponding path program 419 times [2021-03-11 14:36:31,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:31,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136765163] [2021-03-11 14:36:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:31,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:31,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:31,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:31,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:31,815 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:31,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:31,845 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:31,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:31,871 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:31,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:31,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136765163] [2021-03-11 14:36:31,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:31,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:31,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458121037] [2021-03-11 14:36:31,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:31,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:31,895 INFO L87 Difference]: Start difference. First operand 386 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:31,954 INFO L93 Difference]: Finished difference Result 555 states and 1669 transitions. [2021-03-11 14:36:31,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:31,955 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:36:31,955 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:36:31,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:36:31,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 387. [2021-03-11 14:36:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:36:31,961 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:31,962 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:36:31,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:36:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:31,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:31,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:31,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable424 [2021-03-11 14:36:31,962 INFO L428 AbstractCegarLoop]: === Iteration 426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:31,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1220780933, now seen corresponding path program 420 times [2021-03-11 14:36:31,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:31,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989931837] [2021-03-11 14:36:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:31,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:31,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:31,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:31,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:31,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:31,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:31,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:32,006 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:32,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:32,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:32,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:32,061 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:32,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:32,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989931837] [2021-03-11 14:36:32,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:32,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:32,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913418462] [2021-03-11 14:36:32,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:32,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:32,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:32,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:32,086 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:32,174 INFO L93 Difference]: Finished difference Result 559 states and 1676 transitions. [2021-03-11 14:36:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:32,175 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:36:32,175 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:36:32,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:32,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:36:32,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 385. [2021-03-11 14:36:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4921875) internal successors, (1341), 384 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1341 transitions. [2021-03-11 14:36:32,181 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:32,181 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1341 transitions. [2021-03-11 14:36:32,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1341 transitions. [2021-03-11 14:36:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:32,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:32,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:32,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable425 [2021-03-11 14:36:32,182 INFO L428 AbstractCegarLoop]: === Iteration 427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash -935035787, now seen corresponding path program 421 times [2021-03-11 14:36:32,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:32,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479663009] [2021-03-11 14:36:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:32,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:32,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:32,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:32,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:32,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:32,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:32,225 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:32,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:32,257 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:32,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:32,282 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:32,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:32,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479663009] [2021-03-11 14:36:32,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:32,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:32,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623824829] [2021-03-11 14:36:32,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:32,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:32,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:32,306 INFO L87 Difference]: Start difference. First operand 385 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:32,390 INFO L93 Difference]: Finished difference Result 575 states and 1722 transitions. [2021-03-11 14:36:32,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:32,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:32,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:32,391 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:36:32,391 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:36:32,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:32,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:36:32,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 391. [2021-03-11 14:36:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4794871794871796) internal successors, (1357), 390 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1357 transitions. [2021-03-11 14:36:32,398 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:32,398 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1357 transitions. [2021-03-11 14:36:32,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,398 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1357 transitions. [2021-03-11 14:36:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:32,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:32,398 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:32,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable426 [2021-03-11 14:36:32,398 INFO L428 AbstractCegarLoop]: === Iteration 428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:32,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1986847009, now seen corresponding path program 422 times [2021-03-11 14:36:32,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:32,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127287252] [2021-03-11 14:36:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:32,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:32,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:32,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:32,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:32,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:32,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:32,441 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:32,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:32,473 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:32,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:32,498 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:32,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:32,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127287252] [2021-03-11 14:36:32,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:32,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:32,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421368095] [2021-03-11 14:36:32,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:32,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:32,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:32,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:32,522 INFO L87 Difference]: Start difference. First operand 391 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:32,603 INFO L93 Difference]: Finished difference Result 578 states and 1725 transitions. [2021-03-11 14:36:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:32,604 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:36:32,604 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:36:32,604 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:36:32,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 388. [2021-03-11 14:36:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4857881136950906) internal successors, (1349), 387 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1349 transitions. [2021-03-11 14:36:32,611 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:32,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:32,611 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1349 transitions. [2021-03-11 14:36:32,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,611 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1349 transitions. [2021-03-11 14:36:32,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:32,611 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:32,611 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:32,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable427 [2021-03-11 14:36:32,611 INFO L428 AbstractCegarLoop]: === Iteration 429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:32,612 INFO L82 PathProgramCache]: Analyzing trace with hash 77656745, now seen corresponding path program 423 times [2021-03-11 14:36:32,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:32,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683345782] [2021-03-11 14:36:32,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:32,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:32,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:32,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:32,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:32,641 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:32,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:32,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:32,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:32,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:32,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:32,699 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:32,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:32,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683345782] [2021-03-11 14:36:32,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:32,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:32,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502054308] [2021-03-11 14:36:32,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:32,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:32,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:32,724 INFO L87 Difference]: Start difference. First operand 388 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:32,803 INFO L93 Difference]: Finished difference Result 574 states and 1717 transitions. [2021-03-11 14:36:32,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:32,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:32,804 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:36:32,804 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:36:32,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 136.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:36:32,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 391. [2021-03-11 14:36:32,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.471794871794872) internal successors, (1354), 390 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1354 transitions. [2021-03-11 14:36:32,810 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1354 transitions. Word has length 22 [2021-03-11 14:36:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:32,810 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1354 transitions. [2021-03-11 14:36:32,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1354 transitions. [2021-03-11 14:36:32,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:32,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:32,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:32,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable428 [2021-03-11 14:36:32,811 INFO L428 AbstractCegarLoop]: === Iteration 430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:32,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1234981343, now seen corresponding path program 424 times [2021-03-11 14:36:32,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:32,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129200115] [2021-03-11 14:36:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:32,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:32,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:32,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:32,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:32,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:32,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:32,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:32,855 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:32,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:32,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:32,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:32,899 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:32,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:32,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129200115] [2021-03-11 14:36:32,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:32,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:32,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979478444] [2021-03-11 14:36:32,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:32,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:32,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:32,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:32,923 INFO L87 Difference]: Start difference. First operand 391 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:33,014 INFO L93 Difference]: Finished difference Result 576 states and 1718 transitions. [2021-03-11 14:36:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:33,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:33,015 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:36:33,015 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:36:33,015 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:33,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:36:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 388. [2021-03-11 14:36:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4780361757105944) internal successors, (1346), 387 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1346 transitions. [2021-03-11 14:36:33,021 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:33,022 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1346 transitions. [2021-03-11 14:36:33,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1346 transitions. [2021-03-11 14:36:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:33,022 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:33,022 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:33,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable429 [2021-03-11 14:36:33,022 INFO L428 AbstractCegarLoop]: === Iteration 431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:33,022 INFO L82 PathProgramCache]: Analyzing trace with hash -469522839, now seen corresponding path program 425 times [2021-03-11 14:36:33,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34187561] [2021-03-11 14:36:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:33,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:33,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:33,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:33,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:33,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:33,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:33,066 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:33,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:33,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:33,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:33,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:33,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:33,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34187561] [2021-03-11 14:36:33,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:33,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295318288] [2021-03-11 14:36:33,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:33,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:33,135 INFO L87 Difference]: Start difference. First operand 388 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:33,215 INFO L93 Difference]: Finished difference Result 582 states and 1732 transitions. [2021-03-11 14:36:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:33,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:33,217 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:36:33,217 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:36:33,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:36:33,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 393. [2021-03-11 14:36:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4566326530612246) internal successors, (1355), 392 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1355 transitions. [2021-03-11 14:36:33,223 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1355 transitions. Word has length 22 [2021-03-11 14:36:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:33,223 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1355 transitions. [2021-03-11 14:36:33,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,223 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1355 transitions. [2021-03-11 14:36:33,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:33,224 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:33,224 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:33,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable430 [2021-03-11 14:36:33,224 INFO L428 AbstractCegarLoop]: === Iteration 432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1306395467, now seen corresponding path program 426 times [2021-03-11 14:36:33,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:33,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934765572] [2021-03-11 14:36:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:33,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:33,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:33,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:33,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:33,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:33,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:33,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:33,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:33,287 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:33,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:33,312 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:33,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:33,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:33,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934765572] [2021-03-11 14:36:33,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:33,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986335116] [2021-03-11 14:36:33,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:33,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:33,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:33,336 INFO L87 Difference]: Start difference. First operand 393 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:33,418 INFO L93 Difference]: Finished difference Result 581 states and 1725 transitions. [2021-03-11 14:36:33,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:33,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:33,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:33,419 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:36:33,419 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:36:33,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:33,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:36:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 385. [2021-03-11 14:36:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4895833333333335) internal successors, (1340), 384 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1340 transitions. [2021-03-11 14:36:33,425 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1340 transitions. Word has length 22 [2021-03-11 14:36:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:33,425 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1340 transitions. [2021-03-11 14:36:33,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1340 transitions. [2021-03-11 14:36:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:33,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:33,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:33,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable431 [2021-03-11 14:36:33,426 INFO L428 AbstractCegarLoop]: === Iteration 433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:33,426 INFO L82 PathProgramCache]: Analyzing trace with hash -454947421, now seen corresponding path program 427 times [2021-03-11 14:36:33,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:33,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156355533] [2021-03-11 14:36:33,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:33,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:33,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:33,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:33,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:33,459 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:33,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:33,482 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:33,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:33,510 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:33,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:33,536 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:33,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:33,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156355533] [2021-03-11 14:36:33,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:33,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:33,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733090476] [2021-03-11 14:36:33,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:33,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:33,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:33,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:33,560 INFO L87 Difference]: Start difference. First operand 385 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:33,620 INFO L93 Difference]: Finished difference Result 561 states and 1683 transitions. [2021-03-11 14:36:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:33,621 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:36:33,621 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:36:33,621 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:33,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:36:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 387. [2021-03-11 14:36:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:36:33,627 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:33,627 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:36:33,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:36:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:33,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:33,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:33,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable432 [2021-03-11 14:36:33,628 INFO L428 AbstractCegarLoop]: === Iteration 434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:33,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1528032801, now seen corresponding path program 428 times [2021-03-11 14:36:33,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:33,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543382375] [2021-03-11 14:36:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:33,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:33,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:33,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:33,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:33,657 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:33,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:33,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:33,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:33,709 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:33,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:33,734 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:33,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543382375] [2021-03-11 14:36:33,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:33,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:33,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648094587] [2021-03-11 14:36:33,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:33,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:33,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:33,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:33,758 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:33,837 INFO L93 Difference]: Finished difference Result 566 states and 1692 transitions. [2021-03-11 14:36:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:33,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:33,838 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:36:33,838 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:36:33,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:33,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:36:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 386. [2021-03-11 14:36:33,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4857142857142858) internal successors, (1342), 385 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1342 transitions. [2021-03-11 14:36:33,844 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:33,844 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1342 transitions. [2021-03-11 14:36:33,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1342 transitions. [2021-03-11 14:36:33,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:33,845 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:33,845 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:33,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable433 [2021-03-11 14:36:33,845 INFO L428 AbstractCegarLoop]: === Iteration 435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash 557745111, now seen corresponding path program 429 times [2021-03-11 14:36:33,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:33,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397528000] [2021-03-11 14:36:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:33,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:33,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:33,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:33,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:33,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:33,875 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:33,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:33,898 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:33,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:33,929 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:33,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:33,955 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:33,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:33,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397528000] [2021-03-11 14:36:33,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:33,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:33,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895167729] [2021-03-11 14:36:33,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:33,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:33,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:33,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:33,979 INFO L87 Difference]: Start difference. First operand 386 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:34,055 INFO L93 Difference]: Finished difference Result 560 states and 1680 transitions. [2021-03-11 14:36:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:34,056 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:36:34,056 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:36:34,056 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:36:34,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 387. [2021-03-11 14:36:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4792746113989637) internal successors, (1343), 386 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1343 transitions. [2021-03-11 14:36:34,062 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:34,062 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1343 transitions. [2021-03-11 14:36:34,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1343 transitions. [2021-03-11 14:36:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:34,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:34,063 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:34,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable434 [2021-03-11 14:36:34,063 INFO L428 AbstractCegarLoop]: === Iteration 436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:34,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1591051425, now seen corresponding path program 430 times [2021-03-11 14:36:34,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:34,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148667451] [2021-03-11 14:36:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:34,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:34,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:34,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:34,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:34,092 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:34,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:34,115 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:34,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:34,146 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:34,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:34,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:34,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:34,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:34,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148667451] [2021-03-11 14:36:34,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:34,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:34,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158101693] [2021-03-11 14:36:34,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:34,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:34,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:34,195 INFO L87 Difference]: Start difference. First operand 387 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:34,284 INFO L93 Difference]: Finished difference Result 564 states and 1687 transitions. [2021-03-11 14:36:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:34,285 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:36:34,285 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:36:34,286 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:36:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 386. [2021-03-11 14:36:34,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.483116883116883) internal successors, (1341), 385 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1341 transitions. [2021-03-11 14:36:34,292 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:34,292 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1341 transitions. [2021-03-11 14:36:34,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1341 transitions. [2021-03-11 14:36:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:34,292 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:34,292 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:34,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable435 [2021-03-11 14:36:34,292 INFO L428 AbstractCegarLoop]: === Iteration 437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:34,293 INFO L82 PathProgramCache]: Analyzing trace with hash 578751319, now seen corresponding path program 431 times [2021-03-11 14:36:34,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:34,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061860544] [2021-03-11 14:36:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:34,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:34,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:34,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:34,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:34,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:34,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:34,345 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:34,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:34,364 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:34,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:34,389 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:34,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:34,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061860544] [2021-03-11 14:36:34,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:34,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:34,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412297631] [2021-03-11 14:36:34,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:34,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:34,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:34,414 INFO L87 Difference]: Start difference. First operand 386 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:34,493 INFO L93 Difference]: Finished difference Result 574 states and 1711 transitions. [2021-03-11 14:36:34,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:34,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:34,494 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:36:34,494 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:36:34,494 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:36:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 391. [2021-03-11 14:36:34,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4615384615384617) internal successors, (1350), 390 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1350 transitions. [2021-03-11 14:36:34,500 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:34,501 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1350 transitions. [2021-03-11 14:36:34,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1350 transitions. [2021-03-11 14:36:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:34,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:34,501 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:34,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable436 [2021-03-11 14:36:34,501 INFO L428 AbstractCegarLoop]: === Iteration 438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:34,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:34,501 INFO L82 PathProgramCache]: Analyzing trace with hash -496959837, now seen corresponding path program 432 times [2021-03-11 14:36:34,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:34,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116469592] [2021-03-11 14:36:34,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:34,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:34,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:34,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:34,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:34,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:34,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:34,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:34,577 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:34,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:34,602 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:34,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:34,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116469592] [2021-03-11 14:36:34,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:34,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:34,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791614239] [2021-03-11 14:36:34,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:34,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:34,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:34,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:34,626 INFO L87 Difference]: Start difference. First operand 391 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:34,708 INFO L93 Difference]: Finished difference Result 573 states and 1704 transitions. [2021-03-11 14:36:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:34,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:34,709 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:36:34,709 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:36:34,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:34,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:36:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 384. [2021-03-11 14:36:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.493472584856397) internal successors, (1338), 383 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1338 transitions. [2021-03-11 14:36:34,715 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1338 transitions. Word has length 22 [2021-03-11 14:36:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:34,715 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1338 transitions. [2021-03-11 14:36:34,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1338 transitions. [2021-03-11 14:36:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:34,716 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:34,716 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:34,716 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable437 [2021-03-11 14:36:34,716 INFO L428 AbstractCegarLoop]: === Iteration 439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1283152139, now seen corresponding path program 433 times [2021-03-11 14:36:34,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:34,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131227681] [2021-03-11 14:36:34,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:34,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:34,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:34,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:34,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:34,751 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:34,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:34,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:34,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:34,795 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:34,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:34,820 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:34,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:34,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131227681] [2021-03-11 14:36:34,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:34,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:34,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514710853] [2021-03-11 14:36:34,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:34,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:34,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:34,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:34,844 INFO L87 Difference]: Start difference. First operand 384 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:34,924 INFO L93 Difference]: Finished difference Result 570 states and 1718 transitions. [2021-03-11 14:36:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:34,925 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:36:34,925 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:36:34,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:36:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 390. [2021-03-11 14:36:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:36:34,931 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:34,931 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:36:34,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:36:34,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:34,932 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:34,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:34,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable438 [2021-03-11 14:36:34,932 INFO L428 AbstractCegarLoop]: === Iteration 440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:34,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:34,932 INFO L82 PathProgramCache]: Analyzing trace with hash 780610587, now seen corresponding path program 434 times [2021-03-11 14:36:34,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:34,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661414186] [2021-03-11 14:36:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:34,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:34,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:34,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:34,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:34,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:34,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:34,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:34,984 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:34,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:35,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:35,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:35,029 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:35,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:35,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661414186] [2021-03-11 14:36:35,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:35,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:35,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794926092] [2021-03-11 14:36:35,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:35,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:35,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:35,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:35,053 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:35,132 INFO L93 Difference]: Finished difference Result 569 states and 1714 transitions. [2021-03-11 14:36:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:35,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:35,134 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:36:35,134 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:36:35,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:35,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:36:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 388. [2021-03-11 14:36:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4935400516795867) internal successors, (1352), 387 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1352 transitions. [2021-03-11 14:36:35,140 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1352 transitions. Word has length 22 [2021-03-11 14:36:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:35,140 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1352 transitions. [2021-03-11 14:36:35,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1352 transitions. [2021-03-11 14:36:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:35,140 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:35,140 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:35,141 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable439 [2021-03-11 14:36:35,141 INFO L428 AbstractCegarLoop]: === Iteration 441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:35,141 INFO L82 PathProgramCache]: Analyzing trace with hash -317285715, now seen corresponding path program 435 times [2021-03-11 14:36:35,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:35,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439341513] [2021-03-11 14:36:35,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:35,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:35,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:35,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:35,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:35,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:35,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:35,193 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:35,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:35,225 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:35,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:35,250 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:35,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:35,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439341513] [2021-03-11 14:36:35,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:35,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:35,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931598427] [2021-03-11 14:36:35,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:35,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:35,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:35,275 INFO L87 Difference]: Start difference. First operand 388 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:35,366 INFO L93 Difference]: Finished difference Result 575 states and 1727 transitions. [2021-03-11 14:36:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:35,367 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:35,368 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:36:35,368 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:36:35,368 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:35,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:36:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 391. [2021-03-11 14:36:35,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4794871794871796) internal successors, (1357), 390 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1357 transitions. [2021-03-11 14:36:35,374 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:35,374 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1357 transitions. [2021-03-11 14:36:35,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1357 transitions. [2021-03-11 14:36:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:35,375 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:35,375 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:35,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable440 [2021-03-11 14:36:35,375 INFO L428 AbstractCegarLoop]: === Iteration 442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1369096937, now seen corresponding path program 436 times [2021-03-11 14:36:35,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:35,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107646641] [2021-03-11 14:36:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:35,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:35,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:35,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:35,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:35,404 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:35,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:35,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:35,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:35,461 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:35,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:35,487 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:35,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:35,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107646641] [2021-03-11 14:36:35,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:35,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:35,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308197914] [2021-03-11 14:36:35,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:35,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:35,512 INFO L87 Difference]: Start difference. First operand 391 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:35,593 INFO L93 Difference]: Finished difference Result 578 states and 1730 transitions. [2021-03-11 14:36:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:35,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:35,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:35,595 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:36:35,595 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:36:35,595 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:36:35,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 388. [2021-03-11 14:36:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.488372093023256) internal successors, (1350), 387 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1350 transitions. [2021-03-11 14:36:35,601 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:35,601 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1350 transitions. [2021-03-11 14:36:35,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1350 transitions. [2021-03-11 14:36:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:35,602 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:35,602 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:35,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable441 [2021-03-11 14:36:35,602 INFO L428 AbstractCegarLoop]: === Iteration 443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:35,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1924163417, now seen corresponding path program 437 times [2021-03-11 14:36:35,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:35,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083885179] [2021-03-11 14:36:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:35,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:35,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:35,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:35,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:35,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:35,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:35,662 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:35,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:35,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:35,719 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:35,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:35,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083885179] [2021-03-11 14:36:35,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:35,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:35,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077917597] [2021-03-11 14:36:35,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:35,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:35,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:35,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:35,743 INFO L87 Difference]: Start difference. First operand 388 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:35,820 INFO L93 Difference]: Finished difference Result 572 states and 1718 transitions. [2021-03-11 14:36:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:35,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:35,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:35,821 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:36:35,821 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:36:35,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:36:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 390. [2021-03-11 14:36:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4781491002570695) internal successors, (1353), 389 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1353 transitions. [2021-03-11 14:36:35,828 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1353 transitions. Word has length 22 [2021-03-11 14:36:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:35,828 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1353 transitions. [2021-03-11 14:36:35,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1353 transitions. [2021-03-11 14:36:35,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:35,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:35,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:35,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable442 [2021-03-11 14:36:35,828 INFO L428 AbstractCegarLoop]: === Iteration 444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 231984135, now seen corresponding path program 438 times [2021-03-11 14:36:35,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:35,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214668613] [2021-03-11 14:36:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:35,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:35,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:35,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:35,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:35,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:35,882 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:35,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:35,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:35,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:35,938 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:35,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:35,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214668613] [2021-03-11 14:36:35,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:35,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:35,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076086958] [2021-03-11 14:36:35,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:35,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:35,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:35,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:35,963 INFO L87 Difference]: Start difference. First operand 390 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:36,059 INFO L93 Difference]: Finished difference Result 576 states and 1724 transitions. [2021-03-11 14:36:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:36,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:36,060 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:36:36,060 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:36:36,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:36,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:36:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 386. [2021-03-11 14:36:36,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4935064935064934) internal successors, (1345), 385 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1345 transitions. [2021-03-11 14:36:36,066 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:36,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:36,066 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1345 transitions. [2021-03-11 14:36:36,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,066 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1345 transitions. [2021-03-11 14:36:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:36,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:36,067 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:36,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable443 [2021-03-11 14:36:36,067 INFO L428 AbstractCegarLoop]: === Iteration 445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:36,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1683117737, now seen corresponding path program 439 times [2021-03-11 14:36:36,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:36,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019309166] [2021-03-11 14:36:36,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:36,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:36,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:36,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:36,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:36,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:36,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:36,114 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:36,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:36,134 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:36,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:36,159 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:36,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:36,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019309166] [2021-03-11 14:36:36,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:36,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:36,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711896063] [2021-03-11 14:36:36,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:36,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:36,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:36,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:36,183 INFO L87 Difference]: Start difference. First operand 386 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:36,270 INFO L93 Difference]: Finished difference Result 569 states and 1714 transitions. [2021-03-11 14:36:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:36,271 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:36:36,272 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:36:36,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:36:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 390. [2021-03-11 14:36:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4832904884318765) internal successors, (1355), 389 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1355 transitions. [2021-03-11 14:36:36,278 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1355 transitions. Word has length 22 [2021-03-11 14:36:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:36,278 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1355 transitions. [2021-03-11 14:36:36,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1355 transitions. [2021-03-11 14:36:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:36,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:36,279 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:36,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable444 [2021-03-11 14:36:36,279 INFO L428 AbstractCegarLoop]: === Iteration 446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2109308007, now seen corresponding path program 440 times [2021-03-11 14:36:36,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:36,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831220869] [2021-03-11 14:36:36,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:36,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:36,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:36,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:36,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:36,312 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:36,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:36,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:36,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:36,347 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:36,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:36,373 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:36,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:36,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831220869] [2021-03-11 14:36:36,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:36,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:36,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609471804] [2021-03-11 14:36:36,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:36,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:36,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:36,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:36,397 INFO L87 Difference]: Start difference. First operand 390 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:36,485 INFO L93 Difference]: Finished difference Result 568 states and 1710 transitions. [2021-03-11 14:36:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:36,487 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:36:36,487 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:36:36,487 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:36:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 388. [2021-03-11 14:36:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.488372093023256) internal successors, (1350), 387 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1350 transitions. [2021-03-11 14:36:36,493 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:36,493 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1350 transitions. [2021-03-11 14:36:36,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1350 transitions. [2021-03-11 14:36:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:36,493 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:36,493 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:36,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445 [2021-03-11 14:36:36,494 INFO L428 AbstractCegarLoop]: === Iteration 447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2024104237, now seen corresponding path program 441 times [2021-03-11 14:36:36,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:36,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27188853] [2021-03-11 14:36:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:36,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:36,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:36,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:36,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:36,524 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:36,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:36,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:36,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:36,558 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:36,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:36,583 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:36,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:36,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27188853] [2021-03-11 14:36:36,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:36,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:36,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892043628] [2021-03-11 14:36:36,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:36,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:36,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:36,608 INFO L87 Difference]: Start difference. First operand 388 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:36,687 INFO L93 Difference]: Finished difference Result 573 states and 1721 transitions. [2021-03-11 14:36:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:36,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:36,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:36,688 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:36:36,688 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:36:36,688 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:36,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:36:36,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 391. [2021-03-11 14:36:36,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4743589743589745) internal successors, (1355), 390 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1355 transitions. [2021-03-11 14:36:36,694 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1355 transitions. Word has length 22 [2021-03-11 14:36:36,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:36,694 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1355 transitions. [2021-03-11 14:36:36,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,694 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1355 transitions. [2021-03-11 14:36:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:36,695 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:36,695 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:36,695 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable446 [2021-03-11 14:36:36,695 INFO L428 AbstractCegarLoop]: === Iteration 448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1113538461, now seen corresponding path program 442 times [2021-03-11 14:36:36,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:36,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936239247] [2021-03-11 14:36:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:36,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:36,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:36,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:36,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:36,731 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:36,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:36,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:36,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:36,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:36,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:36,790 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:36,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:36,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936239247] [2021-03-11 14:36:36,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:36,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:36,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169470436] [2021-03-11 14:36:36,814 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:36,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:36,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:36,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:36,814 INFO L87 Difference]: Start difference. First operand 391 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:36,910 INFO L93 Difference]: Finished difference Result 575 states and 1722 transitions. [2021-03-11 14:36:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:36,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:36,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:36,911 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:36:36,911 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:36:36,911 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:36:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 388. [2021-03-11 14:36:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.483204134366925) internal successors, (1348), 387 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1348 transitions. [2021-03-11 14:36:36,917 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:36,917 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1348 transitions. [2021-03-11 14:36:36,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:36,917 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1348 transitions. [2021-03-11 14:36:36,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:36,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:36,918 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:36,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable447 [2021-03-11 14:36:36,918 INFO L428 AbstractCegarLoop]: === Iteration 449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:36,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1105125083, now seen corresponding path program 443 times [2021-03-11 14:36:36,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:36,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941340689] [2021-03-11 14:36:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:36,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:36,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:36,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:36,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:36,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:36,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:36,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:36,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:36,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:36,995 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:36,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:37,021 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:37,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:37,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941340689] [2021-03-11 14:36:37,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:37,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:37,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240095945] [2021-03-11 14:36:37,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:37,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:37,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:37,045 INFO L87 Difference]: Start difference. First operand 388 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:37,128 INFO L93 Difference]: Finished difference Result 570 states and 1712 transitions. [2021-03-11 14:36:37,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:37,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:37,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:37,130 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:36:37,130 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:36:37,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:36:37,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 390. [2021-03-11 14:36:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.473007712082262) internal successors, (1351), 389 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1351 transitions. [2021-03-11 14:36:37,136 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1351 transitions. Word has length 22 [2021-03-11 14:36:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:37,136 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1351 transitions. [2021-03-11 14:36:37,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1351 transitions. [2021-03-11 14:36:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:37,136 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:37,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:37,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448 [2021-03-11 14:36:37,137 INFO L428 AbstractCegarLoop]: === Iteration 450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -533670277, now seen corresponding path program 444 times [2021-03-11 14:36:37,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:37,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131427888] [2021-03-11 14:36:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:37,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:37,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:37,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:37,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:37,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:37,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:37,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:37,215 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:37,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:37,241 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:37,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:37,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131427888] [2021-03-11 14:36:37,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:37,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:37,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642666821] [2021-03-11 14:36:37,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:37,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:37,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:37,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:37,265 INFO L87 Difference]: Start difference. First operand 390 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:37,347 INFO L93 Difference]: Finished difference Result 573 states and 1716 transitions. [2021-03-11 14:36:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:37,348 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:36:37,348 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:36:37,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:36:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 386. [2021-03-11 14:36:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4883116883116885) internal successors, (1343), 385 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1343 transitions. [2021-03-11 14:36:37,354 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:37,354 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1343 transitions. [2021-03-11 14:36:37,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1343 transitions. [2021-03-11 14:36:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:37,355 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:37,355 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:37,355 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable449 [2021-03-11 14:36:37,355 INFO L428 AbstractCegarLoop]: === Iteration 451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:37,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:37,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1357521513, now seen corresponding path program 445 times [2021-03-11 14:36:37,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:37,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221129081] [2021-03-11 14:36:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:37,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:37,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:37,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:37,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:37,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:37,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:37,399 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:37,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:37,431 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:37,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:37,456 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:37,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:37,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221129081] [2021-03-11 14:36:37,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:37,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:37,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896058009] [2021-03-11 14:36:37,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:37,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:37,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:37,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:37,480 INFO L87 Difference]: Start difference. First operand 386 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:37,567 INFO L93 Difference]: Finished difference Result 583 states and 1747 transitions. [2021-03-11 14:36:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:37,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:37,568 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:36:37,568 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:36:37,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:36:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 392. [2021-03-11 14:36:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.475703324808184) internal successors, (1359), 391 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1359 transitions. [2021-03-11 14:36:37,575 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1359 transitions. Word has length 22 [2021-03-11 14:36:37,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:37,575 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1359 transitions. [2021-03-11 14:36:37,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1359 transitions. [2021-03-11 14:36:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:37,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:37,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:37,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable450 [2021-03-11 14:36:37,575 INFO L428 AbstractCegarLoop]: === Iteration 452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:37,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:37,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1885634561, now seen corresponding path program 446 times [2021-03-11 14:36:37,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:37,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062574724] [2021-03-11 14:36:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:37,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:37,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:37,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:37,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:37,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:37,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:37,619 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:37,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:37,651 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:37,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:37,676 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:37,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:37,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062574724] [2021-03-11 14:36:37,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:37,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:37,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143470486] [2021-03-11 14:36:37,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:37,700 INFO L87 Difference]: Start difference. First operand 392 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:37,790 INFO L93 Difference]: Finished difference Result 586 states and 1750 transitions. [2021-03-11 14:36:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:37,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:37,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:37,791 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:36:37,791 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:36:37,791 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:36:37,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 389. [2021-03-11 14:36:37,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.481958762886598) internal successors, (1351), 388 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1351 transitions. [2021-03-11 14:36:37,797 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1351 transitions. Word has length 22 [2021-03-11 14:36:37,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:37,798 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1351 transitions. [2021-03-11 14:36:37,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1351 transitions. [2021-03-11 14:36:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:37,798 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:37,798 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:37,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable451 [2021-03-11 14:36:37,798 INFO L428 AbstractCegarLoop]: === Iteration 453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:37,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash -344828981, now seen corresponding path program 447 times [2021-03-11 14:36:37,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:37,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571593208] [2021-03-11 14:36:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:37,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:37,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:37,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:37,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:37,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:37,832 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:37,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:37,846 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:37,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:37,866 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:37,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:37,891 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:37,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:37,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571593208] [2021-03-11 14:36:37,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:37,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:37,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856046529] [2021-03-11 14:36:37,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:37,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:37,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:37,916 INFO L87 Difference]: Start difference. First operand 389 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:38,010 INFO L93 Difference]: Finished difference Result 582 states and 1742 transitions. [2021-03-11 14:36:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:38,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:38,011 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:36:38,011 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:36:38,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:36:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 392. [2021-03-11 14:36:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4680306905370846) internal successors, (1356), 391 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1356 transitions. [2021-03-11 14:36:38,017 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1356 transitions. Word has length 22 [2021-03-11 14:36:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:38,017 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1356 transitions. [2021-03-11 14:36:38,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1356 transitions. [2021-03-11 14:36:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:38,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:38,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:38,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable452 [2021-03-11 14:36:38,018 INFO L428 AbstractCegarLoop]: === Iteration 454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:38,018 INFO L82 PathProgramCache]: Analyzing trace with hash 812495617, now seen corresponding path program 448 times [2021-03-11 14:36:38,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:38,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768160028] [2021-03-11 14:36:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:38,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:38,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:38,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:38,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:38,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:38,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:38,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:38,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:38,081 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:38,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:38,106 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:38,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:38,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768160028] [2021-03-11 14:36:38,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:38,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:38,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190343955] [2021-03-11 14:36:38,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:38,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:38,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:38,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:38,130 INFO L87 Difference]: Start difference. First operand 392 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:38,220 INFO L93 Difference]: Finished difference Result 584 states and 1743 transitions. [2021-03-11 14:36:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:38,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:38,222 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:36:38,222 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:36:38,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:38,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:36:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 389. [2021-03-11 14:36:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4742268041237114) internal successors, (1348), 388 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1348 transitions. [2021-03-11 14:36:38,228 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:38,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:38,228 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1348 transitions. [2021-03-11 14:36:38,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,228 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1348 transitions. [2021-03-11 14:36:38,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:38,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:38,229 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:38,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable453 [2021-03-11 14:36:38,229 INFO L428 AbstractCegarLoop]: === Iteration 455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:38,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:38,229 INFO L82 PathProgramCache]: Analyzing trace with hash -892008565, now seen corresponding path program 449 times [2021-03-11 14:36:38,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:38,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941725832] [2021-03-11 14:36:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:38,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:38,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:38,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:38,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:38,258 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:38,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:38,273 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:38,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:38,292 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:38,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:38,318 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:38,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:38,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941725832] [2021-03-11 14:36:38,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:38,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:38,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480571681] [2021-03-11 14:36:38,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:38,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:38,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:38,342 INFO L87 Difference]: Start difference. First operand 389 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:38,423 INFO L93 Difference]: Finished difference Result 590 states and 1757 transitions. [2021-03-11 14:36:38,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:38,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:38,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:38,424 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:36:38,424 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:36:38,424 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:36:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 394. [2021-03-11 14:36:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4529262086513994) internal successors, (1357), 393 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1357 transitions. [2021-03-11 14:36:38,430 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1357 transitions. Word has length 22 [2021-03-11 14:36:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:38,430 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1357 transitions. [2021-03-11 14:36:38,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1357 transitions. [2021-03-11 14:36:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:38,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:38,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:38,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable454 [2021-03-11 14:36:38,431 INFO L428 AbstractCegarLoop]: === Iteration 456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:38,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:38,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1728881193, now seen corresponding path program 450 times [2021-03-11 14:36:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:38,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410852319] [2021-03-11 14:36:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:38,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:38,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:38,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:38,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:38,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:38,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:38,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:38,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:38,495 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:38,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:38,520 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:38,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:38,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410852319] [2021-03-11 14:36:38,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:38,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:38,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614188930] [2021-03-11 14:36:38,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:38,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:38,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:38,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:38,544 INFO L87 Difference]: Start difference. First operand 394 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:38,625 INFO L93 Difference]: Finished difference Result 589 states and 1750 transitions. [2021-03-11 14:36:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:38,627 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:36:38,627 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:36:38,627 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:38,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:36:38,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 386. [2021-03-11 14:36:38,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.483116883116883) internal successors, (1341), 385 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1341 transitions. [2021-03-11 14:36:38,633 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:38,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:38,633 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1341 transitions. [2021-03-11 14:36:38,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,633 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1341 transitions. [2021-03-11 14:36:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:38,633 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:38,633 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:38,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable455 [2021-03-11 14:36:38,634 INFO L428 AbstractCegarLoop]: === Iteration 457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:38,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1060985435, now seen corresponding path program 451 times [2021-03-11 14:36:38,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:38,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484537976] [2021-03-11 14:36:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:38,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:38,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:38,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:38,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:38,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:38,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:38,689 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:38,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:38,719 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:38,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:38,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:38,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:38,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484537976] [2021-03-11 14:36:38,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:38,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114511386] [2021-03-11 14:36:38,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:38,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:38,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:38,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:38,769 INFO L87 Difference]: Start difference. First operand 386 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:38,848 INFO L93 Difference]: Finished difference Result 576 states and 1726 transitions. [2021-03-11 14:36:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:38,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:38,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:38,850 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:36:38,850 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:36:38,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:36:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 390. [2021-03-11 14:36:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.473007712082262) internal successors, (1351), 389 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1351 transitions. [2021-03-11 14:36:38,856 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1351 transitions. Word has length 22 [2021-03-11 14:36:38,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:38,856 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1351 transitions. [2021-03-11 14:36:38,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1351 transitions. [2021-03-11 14:36:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:38,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:38,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:38,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable456 [2021-03-11 14:36:38,857 INFO L428 AbstractCegarLoop]: === Iteration 458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:38,857 INFO L82 PathProgramCache]: Analyzing trace with hash -631193847, now seen corresponding path program 452 times [2021-03-11 14:36:38,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:38,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963881247] [2021-03-11 14:36:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:38,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:38,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:38,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:38,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:38,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:38,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:38,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:38,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:38,945 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:38,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:38,971 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:38,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:38,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963881247] [2021-03-11 14:36:38,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:38,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:38,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019700357] [2021-03-11 14:36:38,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:38,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:38,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:38,995 INFO L87 Difference]: Start difference. First operand 390 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:39,074 INFO L93 Difference]: Finished difference Result 580 states and 1732 transitions. [2021-03-11 14:36:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:39,075 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:36:39,075 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:36:39,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:36:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 388. [2021-03-11 14:36:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4780361757105944) internal successors, (1346), 387 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1346 transitions. [2021-03-11 14:36:39,081 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:39,082 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1346 transitions. [2021-03-11 14:36:39,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1346 transitions. [2021-03-11 14:36:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:39,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:39,082 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:39,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable457 [2021-03-11 14:36:39,082 INFO L428 AbstractCegarLoop]: === Iteration 459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:39,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:39,082 INFO L82 PathProgramCache]: Analyzing trace with hash -14725721, now seen corresponding path program 453 times [2021-03-11 14:36:39,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:39,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811767834] [2021-03-11 14:36:39,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:39,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:39,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:39,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:39,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:39,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:39,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:39,137 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:39,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:39,171 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:39,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:39,196 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:39,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:39,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811767834] [2021-03-11 14:36:39,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:39,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:39,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725789799] [2021-03-11 14:36:39,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:39,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:39,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:39,221 INFO L87 Difference]: Start difference. First operand 388 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:39,300 INFO L93 Difference]: Finished difference Result 575 states and 1722 transitions. [2021-03-11 14:36:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:39,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:39,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:39,308 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:36:39,308 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:36:39,309 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:39,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:36:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 390. [2021-03-11 14:36:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.467866323907455) internal successors, (1349), 389 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1349 transitions. [2021-03-11 14:36:39,315 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:39,315 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1349 transitions. [2021-03-11 14:36:39,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1349 transitions. [2021-03-11 14:36:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:39,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:39,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:39,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable458 [2021-03-11 14:36:39,315 INFO L428 AbstractCegarLoop]: === Iteration 460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:39,316 INFO L82 PathProgramCache]: Analyzing trace with hash 556729085, now seen corresponding path program 454 times [2021-03-11 14:36:39,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:39,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744448844] [2021-03-11 14:36:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:39,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:39,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:39,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:39,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:39,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:39,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:39,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:39,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:39,404 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:39,429 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:39,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:39,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744448844] [2021-03-11 14:36:39,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:39,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:39,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001783185] [2021-03-11 14:36:39,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:39,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:39,453 INFO L87 Difference]: Start difference. First operand 390 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:39,535 INFO L93 Difference]: Finished difference Result 578 states and 1726 transitions. [2021-03-11 14:36:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:39,536 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:36:39,536 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:36:39,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:36:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 388. [2021-03-11 14:36:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4728682170542635) internal successors, (1344), 387 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1344 transitions. [2021-03-11 14:36:39,542 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:39,542 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1344 transitions. [2021-03-11 14:36:39,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1344 transitions. [2021-03-11 14:36:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:39,543 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:39,543 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:39,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable459 [2021-03-11 14:36:39,543 INFO L428 AbstractCegarLoop]: === Iteration 461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:39,543 INFO L82 PathProgramCache]: Analyzing trace with hash -95964045, now seen corresponding path program 455 times [2021-03-11 14:36:39,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:39,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141377548] [2021-03-11 14:36:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:39,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:39,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:39,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:39,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:39,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:39,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:39,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:39,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:39,618 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:39,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:39,643 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:39,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:39,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141377548] [2021-03-11 14:36:39,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:39,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:39,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929524898] [2021-03-11 14:36:39,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:39,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:39,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:39,668 INFO L87 Difference]: Start difference. First operand 388 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:39,753 INFO L93 Difference]: Finished difference Result 586 states and 1745 transitions. [2021-03-11 14:36:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:39,754 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:39,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:39,755 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:36:39,755 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:36:39,755 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:39,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:36:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 393. [2021-03-11 14:36:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.451530612244898) internal successors, (1353), 392 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1353 transitions. [2021-03-11 14:36:39,761 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1353 transitions. Word has length 22 [2021-03-11 14:36:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:39,761 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1353 transitions. [2021-03-11 14:36:39,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1353 transitions. [2021-03-11 14:36:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:39,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:39,762 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:39,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable460 [2021-03-11 14:36:39,762 INFO L428 AbstractCegarLoop]: === Iteration 462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash 659991783, now seen corresponding path program 456 times [2021-03-11 14:36:39,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:39,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226642410] [2021-03-11 14:36:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:39,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:39,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:39,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:39,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:39,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:39,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:39,817 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:39,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:39,837 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:39,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:39,862 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:39,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:39,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:39,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226642410] [2021-03-11 14:36:39,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:39,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:39,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965077430] [2021-03-11 14:36:39,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:39,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:39,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:39,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:39,887 INFO L87 Difference]: Start difference. First operand 393 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:39,970 INFO L93 Difference]: Finished difference Result 585 states and 1738 transitions. [2021-03-11 14:36:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:39,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:39,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:39,971 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:36:39,971 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:36:39,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:39,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:36:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 384. [2021-03-11 14:36:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4908616187989554) internal successors, (1337), 383 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1337 transitions. [2021-03-11 14:36:39,977 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1337 transitions. Word has length 22 [2021-03-11 14:36:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:39,977 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1337 transitions. [2021-03-11 14:36:39,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:39,977 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1337 transitions. [2021-03-11 14:36:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:39,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:39,978 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:39,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable461 [2021-03-11 14:36:39,978 INFO L428 AbstractCegarLoop]: === Iteration 463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:39,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1340754779, now seen corresponding path program 457 times [2021-03-11 14:36:39,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:39,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311544870] [2021-03-11 14:36:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:39,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:39,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:39,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:39,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:39,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:39,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:40,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:40,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:40,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:40,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:40,066 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:40,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:40,092 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:40,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:40,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311544870] [2021-03-11 14:36:40,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:40,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:40,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782022496] [2021-03-11 14:36:40,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:40,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:40,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:40,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:40,117 INFO L87 Difference]: Start difference. First operand 384 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:40,177 INFO L93 Difference]: Finished difference Result 547 states and 1649 transitions. [2021-03-11 14:36:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:40,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:40,179 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:36:40,179 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:36:40,179 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:36:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 387. [2021-03-11 14:36:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4844559585492227) internal successors, (1345), 386 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1345 transitions. [2021-03-11 14:36:40,185 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:40,185 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1345 transitions. [2021-03-11 14:36:40,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1345 transitions. [2021-03-11 14:36:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:40,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:40,185 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:40,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable462 [2021-03-11 14:36:40,186 INFO L428 AbstractCegarLoop]: === Iteration 464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:40,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1343271559, now seen corresponding path program 458 times [2021-03-11 14:36:40,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:40,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420452155] [2021-03-11 14:36:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:40,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:40,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:40,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:40,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:40,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:40,224 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:40,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:40,247 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:40,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:40,268 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:40,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:40,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:40,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:40,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420452155] [2021-03-11 14:36:40,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:40,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:40,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249256051] [2021-03-11 14:36:40,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:40,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:40,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:40,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:40,318 INFO L87 Difference]: Start difference. First operand 387 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:40,406 INFO L93 Difference]: Finished difference Result 548 states and 1650 transitions. [2021-03-11 14:36:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:40,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:40,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:40,407 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:36:40,407 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:40,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:40,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:40,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 386. [2021-03-11 14:36:40,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4883116883116885) internal successors, (1343), 385 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1343 transitions. [2021-03-11 14:36:40,413 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:40,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:40,414 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1343 transitions. [2021-03-11 14:36:40,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1343 transitions. [2021-03-11 14:36:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:40,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:40,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:40,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable463 [2021-03-11 14:36:40,414 INFO L428 AbstractCegarLoop]: === Iteration 465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash -259683075, now seen corresponding path program 459 times [2021-03-11 14:36:40,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:40,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221318345] [2021-03-11 14:36:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:40,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:40,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:40,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:40,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:40,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:40,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:40,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:40,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:40,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:40,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:40,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:40,532 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:40,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:40,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221318345] [2021-03-11 14:36:40,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:40,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:40,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121519354] [2021-03-11 14:36:40,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:40,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:40,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:40,557 INFO L87 Difference]: Start difference. First operand 386 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:40,621 INFO L93 Difference]: Finished difference Result 551 states and 1656 transitions. [2021-03-11 14:36:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:40,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:40,622 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:36:40,622 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:36:40,622 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:40,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:36:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 387. [2021-03-11 14:36:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:36:40,629 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:40,629 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:36:40,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:36:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:40,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:40,629 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:40,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable464 [2021-03-11 14:36:40,629 INFO L428 AbstractCegarLoop]: === Iteration 466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1332768455, now seen corresponding path program 460 times [2021-03-11 14:36:40,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:40,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328003036] [2021-03-11 14:36:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:40,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:40,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:40,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:40,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:40,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:40,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:40,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:40,693 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:40,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:40,722 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:40,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:40,748 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:40,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328003036] [2021-03-11 14:36:40,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:40,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:40,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659366715] [2021-03-11 14:36:40,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:40,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:40,773 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:40,853 INFO L93 Difference]: Finished difference Result 556 states and 1665 transitions. [2021-03-11 14:36:40,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:40,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:40,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:40,855 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:40,855 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:40,855 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:40,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 386. [2021-03-11 14:36:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4857142857142858) internal successors, (1342), 385 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1342 transitions. [2021-03-11 14:36:40,861 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:40,861 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1342 transitions. [2021-03-11 14:36:40,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1342 transitions. [2021-03-11 14:36:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:40,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:40,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:40,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable465 [2021-03-11 14:36:40,862 INFO L428 AbstractCegarLoop]: === Iteration 467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash -249179971, now seen corresponding path program 461 times [2021-03-11 14:36:40,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:40,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036861992] [2021-03-11 14:36:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:40,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:40,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:40,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:40,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:40,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:40,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:40,901 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:40,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:40,925 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:40,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:40,957 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:40,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:40,983 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:40,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:41,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036861992] [2021-03-11 14:36:41,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:41,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:41,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422302228] [2021-03-11 14:36:41,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:41,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:41,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:41,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:41,008 INFO L87 Difference]: Start difference. First operand 386 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:41,087 INFO L93 Difference]: Finished difference Result 554 states and 1662 transitions. [2021-03-11 14:36:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:41,087 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:41,088 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:36:41,088 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:36:41,088 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:41,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:36:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 388. [2021-03-11 14:36:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4754521963824287) internal successors, (1345), 387 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1345 transitions. [2021-03-11 14:36:41,095 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1345 transitions. Word has length 22 [2021-03-11 14:36:41,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:41,095 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1345 transitions. [2021-03-11 14:36:41,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1345 transitions. [2021-03-11 14:36:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:41,095 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:41,095 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:41,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable466 [2021-03-11 14:36:41,095 INFO L428 AbstractCegarLoop]: === Iteration 468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:41,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1361760987, now seen corresponding path program 462 times [2021-03-11 14:36:41,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:41,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105659279] [2021-03-11 14:36:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:41,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:41,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:41,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:41,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:41,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:41,139 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:41,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:41,163 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:41,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:41,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:41,220 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:41,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:41,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105659279] [2021-03-11 14:36:41,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:41,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:41,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719111169] [2021-03-11 14:36:41,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:41,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:41,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:41,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:41,245 INFO L87 Difference]: Start difference. First operand 388 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:41,329 INFO L93 Difference]: Finished difference Result 558 states and 1668 transitions. [2021-03-11 14:36:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:41,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:41,330 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:36:41,330 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:36:41,330 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:36:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 385. [2021-03-11 14:36:41,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4895833333333335) internal successors, (1340), 384 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1340 transitions. [2021-03-11 14:36:41,336 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1340 transitions. Word has length 22 [2021-03-11 14:36:41,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:41,336 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1340 transitions. [2021-03-11 14:36:41,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,337 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1340 transitions. [2021-03-11 14:36:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:41,337 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:41,337 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:41,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable467 [2021-03-11 14:36:41,337 INFO L428 AbstractCegarLoop]: === Iteration 469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:41,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1625515097, now seen corresponding path program 463 times [2021-03-11 14:36:41,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:41,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391714795] [2021-03-11 14:36:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:41,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:41,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:41,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:41,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:41,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:41,376 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:41,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:41,403 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:41,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:41,423 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:41,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:41,449 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:41,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:41,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:41,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391714795] [2021-03-11 14:36:41,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:41,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:41,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648516911] [2021-03-11 14:36:41,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:41,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:41,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:41,474 INFO L87 Difference]: Start difference. First operand 385 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:41,534 INFO L93 Difference]: Finished difference Result 546 states and 1646 transitions. [2021-03-11 14:36:41,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:41,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:41,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:41,536 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:36:41,536 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:36:41,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:41,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:36:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 387. [2021-03-11 14:36:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:36:41,542 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:41,542 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:36:41,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:36:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:41,543 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:41,543 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:41,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable468 [2021-03-11 14:36:41,543 INFO L428 AbstractCegarLoop]: === Iteration 470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash -14574139, now seen corresponding path program 464 times [2021-03-11 14:36:41,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:41,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712056861] [2021-03-11 14:36:41,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:41,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:41,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:41,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:41,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:41,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:41,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:41,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:41,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:41,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:41,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:41,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:41,654 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:41,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:41,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712056861] [2021-03-11 14:36:41,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:41,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:41,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587250319] [2021-03-11 14:36:41,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:41,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:41,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:41,679 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:41,764 INFO L93 Difference]: Finished difference Result 547 states and 1647 transitions. [2021-03-11 14:36:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:41,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:41,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:41,765 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:36:41,765 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:36:41,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:41,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:36:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 386. [2021-03-11 14:36:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4857142857142858) internal successors, (1342), 385 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1342 transitions. [2021-03-11 14:36:41,772 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:41,772 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1342 transitions. [2021-03-11 14:36:41,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1342 transitions. [2021-03-11 14:36:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:41,772 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:41,772 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:41,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable469 [2021-03-11 14:36:41,772 INFO L428 AbstractCegarLoop]: === Iteration 471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:41,773 INFO L82 PathProgramCache]: Analyzing trace with hash 2081706877, now seen corresponding path program 465 times [2021-03-11 14:36:41,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:41,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90024180] [2021-03-11 14:36:41,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:41,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:41,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:41,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:41,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:41,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:41,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:41,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:41,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:41,838 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:41,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:41,869 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:41,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:41,895 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:41,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:41,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90024180] [2021-03-11 14:36:41,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:41,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872590756] [2021-03-11 14:36:41,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:41,919 INFO L87 Difference]: Start difference. First operand 386 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:41,985 INFO L93 Difference]: Finished difference Result 549 states and 1651 transitions. [2021-03-11 14:36:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:41,986 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:36:41,986 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:36:41,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:36:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 387. [2021-03-11 14:36:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4792746113989637) internal successors, (1343), 386 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1343 transitions. [2021-03-11 14:36:41,992 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:41,992 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1343 transitions. [2021-03-11 14:36:41,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1343 transitions. [2021-03-11 14:36:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:41,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:41,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:41,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable470 [2021-03-11 14:36:41,993 INFO L428 AbstractCegarLoop]: === Iteration 472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:41,993 INFO L82 PathProgramCache]: Analyzing trace with hash -67089659, now seen corresponding path program 466 times [2021-03-11 14:36:41,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:41,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334909737] [2021-03-11 14:36:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:42,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:42,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:42,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:42,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:42,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:42,032 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:42,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:42,059 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:42,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:42,090 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:42,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:42,115 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:42,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:42,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334909737] [2021-03-11 14:36:42,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:42,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:42,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079481785] [2021-03-11 14:36:42,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:42,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:42,140 INFO L87 Difference]: Start difference. First operand 387 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:42,221 INFO L93 Difference]: Finished difference Result 553 states and 1658 transitions. [2021-03-11 14:36:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:42,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:42,222 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:36:42,222 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:36:42,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:36:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 386. [2021-03-11 14:36:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.483116883116883) internal successors, (1341), 385 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1341 transitions. [2021-03-11 14:36:42,228 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:42,228 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1341 transitions. [2021-03-11 14:36:42,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1341 transitions. [2021-03-11 14:36:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:42,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:42,229 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:42,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable471 [2021-03-11 14:36:42,229 INFO L428 AbstractCegarLoop]: === Iteration 473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:42,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:42,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2092209981, now seen corresponding path program 467 times [2021-03-11 14:36:42,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:42,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142929493] [2021-03-11 14:36:42,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:42,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:42,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:42,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:42,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:42,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:42,271 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:42,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:42,298 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:42,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:42,332 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:42,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:42,358 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:42,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:42,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142929493] [2021-03-11 14:36:42,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:42,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:42,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118277484] [2021-03-11 14:36:42,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:42,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:42,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:42,383 INFO L87 Difference]: Start difference. First operand 386 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:42,466 INFO L93 Difference]: Finished difference Result 552 states and 1657 transitions. [2021-03-11 14:36:42,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:42,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:42,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:42,467 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:36:42,467 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:36:42,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:36:42,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 388. [2021-03-11 14:36:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4728682170542635) internal successors, (1344), 387 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1344 transitions. [2021-03-11 14:36:42,473 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1344 transitions. Word has length 22 [2021-03-11 14:36:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:42,473 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1344 transitions. [2021-03-11 14:36:42,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1344 transitions. [2021-03-11 14:36:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:42,474 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:42,474 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:42,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable472 [2021-03-11 14:36:42,474 INFO L428 AbstractCegarLoop]: === Iteration 474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:42,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1667527513, now seen corresponding path program 468 times [2021-03-11 14:36:42,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:42,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508647508] [2021-03-11 14:36:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:42,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:42,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:42,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:42,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:42,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:42,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:42,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:42,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:42,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:42,576 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:42,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:42,601 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:42,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:42,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508647508] [2021-03-11 14:36:42,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:42,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:42,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388542330] [2021-03-11 14:36:42,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:42,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:42,626 INFO L87 Difference]: Start difference. First operand 388 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:42,706 INFO L93 Difference]: Finished difference Result 555 states and 1661 transitions. [2021-03-11 14:36:42,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:42,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:42,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:42,708 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:36:42,708 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:36:42,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:36:42,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 385. [2021-03-11 14:36:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4869791666666665) internal successors, (1339), 384 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1339 transitions. [2021-03-11 14:36:42,714 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1339 transitions. Word has length 22 [2021-03-11 14:36:42,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:42,714 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1339 transitions. [2021-03-11 14:36:42,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,714 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1339 transitions. [2021-03-11 14:36:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:42,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:42,715 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:42,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable473 [2021-03-11 14:36:42,715 INFO L428 AbstractCegarLoop]: === Iteration 475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1299918873, now seen corresponding path program 469 times [2021-03-11 14:36:42,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:42,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627930642] [2021-03-11 14:36:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:42,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:42,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:42,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:42,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:42,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:42,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:42,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:42,776 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:42,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:42,806 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:42,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:42,832 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:42,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627930642] [2021-03-11 14:36:42,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:42,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:42,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993336833] [2021-03-11 14:36:42,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:42,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:42,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:42,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:42,857 INFO L87 Difference]: Start difference. First operand 385 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:42,923 INFO L93 Difference]: Finished difference Result 557 states and 1670 transitions. [2021-03-11 14:36:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:42,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:42,924 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:36:42,924 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:36:42,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:36:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 387. [2021-03-11 14:36:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4792746113989637) internal successors, (1343), 386 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1343 transitions. [2021-03-11 14:36:42,930 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:42,930 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1343 transitions. [2021-03-11 14:36:42,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:42,930 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1343 transitions. [2021-03-11 14:36:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:42,931 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:42,931 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:42,931 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable474 [2021-03-11 14:36:42,931 INFO L428 AbstractCegarLoop]: === Iteration 476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:42,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1921963043, now seen corresponding path program 470 times [2021-03-11 14:36:42,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:42,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121805177] [2021-03-11 14:36:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:42,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:42,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:42,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:42,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:42,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:42,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:42,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:42,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:42,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:42,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:43,024 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:43,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:43,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:43,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:43,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121805177] [2021-03-11 14:36:43,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:43,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:43,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43353646] [2021-03-11 14:36:43,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:43,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:43,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:43,074 INFO L87 Difference]: Start difference. First operand 387 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:43,164 INFO L93 Difference]: Finished difference Result 562 states and 1679 transitions. [2021-03-11 14:36:43,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:43,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:43,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:43,166 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:36:43,166 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:36:43,166 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:43,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:36:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 386. [2021-03-11 14:36:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.483116883116883) internal successors, (1341), 385 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1341 transitions. [2021-03-11 14:36:43,172 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:43,172 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1341 transitions. [2021-03-11 14:36:43,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1341 transitions. [2021-03-11 14:36:43,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:43,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:43,172 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:43,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable475 [2021-03-11 14:36:43,173 INFO L428 AbstractCegarLoop]: === Iteration 477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:43,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:43,173 INFO L82 PathProgramCache]: Analyzing trace with hash -287226341, now seen corresponding path program 471 times [2021-03-11 14:36:43,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:43,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074228218] [2021-03-11 14:36:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:43,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:43,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:43,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:43,192 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:43,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:43,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:43,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:43,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:43,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:43,266 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:43,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:43,292 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:43,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:43,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074228218] [2021-03-11 14:36:43,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:43,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:43,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637890837] [2021-03-11 14:36:43,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:43,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:43,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:43,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:43,317 INFO L87 Difference]: Start difference. First operand 386 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:43,389 INFO L93 Difference]: Finished difference Result 556 states and 1667 transitions. [2021-03-11 14:36:43,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:43,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:43,390 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:36:43,390 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:36:43,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:36:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 387. [2021-03-11 14:36:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.476683937823834) internal successors, (1342), 386 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1342 transitions. [2021-03-11 14:36:43,396 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1342 transitions. Word has length 22 [2021-03-11 14:36:43,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:43,396 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1342 transitions. [2021-03-11 14:36:43,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1342 transitions. [2021-03-11 14:36:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:43,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:43,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:43,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable476 [2021-03-11 14:36:43,397 INFO L428 AbstractCegarLoop]: === Iteration 478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:43,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1858944419, now seen corresponding path program 472 times [2021-03-11 14:36:43,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:43,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812893237] [2021-03-11 14:36:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:43,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:43,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:43,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:43,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:43,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:43,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:43,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:43,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:43,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:43,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:43,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:43,516 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:43,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:43,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812893237] [2021-03-11 14:36:43,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:43,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:43,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999124556] [2021-03-11 14:36:43,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:43,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:43,540 INFO L87 Difference]: Start difference. First operand 387 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:43,631 INFO L93 Difference]: Finished difference Result 560 states and 1674 transitions. [2021-03-11 14:36:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:43,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:43,632 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:36:43,632 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:36:43,632 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:36:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 386. [2021-03-11 14:36:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4805194805194803) internal successors, (1340), 385 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1340 transitions. [2021-03-11 14:36:43,638 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1340 transitions. Word has length 22 [2021-03-11 14:36:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:43,638 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1340 transitions. [2021-03-11 14:36:43,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1340 transitions. [2021-03-11 14:36:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:43,639 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:43,639 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:43,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable477 [2021-03-11 14:36:43,639 INFO L428 AbstractCegarLoop]: === Iteration 479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:43,639 INFO L82 PathProgramCache]: Analyzing trace with hash -266220133, now seen corresponding path program 473 times [2021-03-11 14:36:43,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:43,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588490452] [2021-03-11 14:36:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:43,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:43,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:43,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:43,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:43,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:43,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:43,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:43,701 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:43,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:43,721 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:43,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:43,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:43,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:43,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588490452] [2021-03-11 14:36:43,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:43,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:43,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763337877] [2021-03-11 14:36:43,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:43,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:43,771 INFO L87 Difference]: Start difference. First operand 386 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:43,849 INFO L93 Difference]: Finished difference Result 570 states and 1698 transitions. [2021-03-11 14:36:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:43,850 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:36:43,850 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:36:43,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:36:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 391. [2021-03-11 14:36:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.458974358974359) internal successors, (1349), 390 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1349 transitions. [2021-03-11 14:36:43,856 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1349 transitions. Word has length 22 [2021-03-11 14:36:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:43,856 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1349 transitions. [2021-03-11 14:36:43,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1349 transitions. [2021-03-11 14:36:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:43,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:43,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:43,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable478 [2021-03-11 14:36:43,857 INFO L428 AbstractCegarLoop]: === Iteration 480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1341931289, now seen corresponding path program 474 times [2021-03-11 14:36:43,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:43,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666303530] [2021-03-11 14:36:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:43,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:43,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:43,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:43,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:43,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:43,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:43,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:43,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:43,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:43,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:43,939 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:43,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:43,964 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:43,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:43,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666303530] [2021-03-11 14:36:43,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:43,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:43,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552129918] [2021-03-11 14:36:43,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:43,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:43,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:43,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:43,989 INFO L87 Difference]: Start difference. First operand 391 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:44,089 INFO L93 Difference]: Finished difference Result 569 states and 1691 transitions. [2021-03-11 14:36:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:44,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:44,091 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:36:44,091 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:36:44,091 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:36:44,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 385. [2021-03-11 14:36:44,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.484375) internal successors, (1338), 384 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1338 transitions. [2021-03-11 14:36:44,097 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1338 transitions. Word has length 22 [2021-03-11 14:36:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:44,097 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1338 transitions. [2021-03-11 14:36:44,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,097 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1338 transitions. [2021-03-11 14:36:44,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:44,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:44,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:44,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable479 [2021-03-11 14:36:44,098 INFO L428 AbstractCegarLoop]: === Iteration 481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash 636618309, now seen corresponding path program 475 times [2021-03-11 14:36:44,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:44,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193845039] [2021-03-11 14:36:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:44,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:44,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:44,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:44,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:44,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:44,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:44,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:44,163 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:44,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:44,193 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:44,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:44,219 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:44,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:44,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193845039] [2021-03-11 14:36:44,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:44,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:44,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009883219] [2021-03-11 14:36:44,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:44,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:44,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:44,244 INFO L87 Difference]: Start difference. First operand 385 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:44,323 INFO L93 Difference]: Finished difference Result 564 states and 1688 transitions. [2021-03-11 14:36:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:44,325 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:36:44,325 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:36:44,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:44,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:36:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 389. [2021-03-11 14:36:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4742268041237114) internal successors, (1348), 388 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1348 transitions. [2021-03-11 14:36:44,331 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1348 transitions. Word has length 22 [2021-03-11 14:36:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:44,331 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1348 transitions. [2021-03-11 14:36:44,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1348 transitions. [2021-03-11 14:36:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:44,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:44,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:44,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable480 [2021-03-11 14:36:44,332 INFO L428 AbstractCegarLoop]: === Iteration 482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash -2047408029, now seen corresponding path program 476 times [2021-03-11 14:36:44,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:44,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050257691] [2021-03-11 14:36:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:44,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:44,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:44,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:44,351 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:44,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:44,371 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:44,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:44,397 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:44,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:44,427 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:44,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:44,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:44,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:44,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050257691] [2021-03-11 14:36:44,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:44,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:44,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115075926] [2021-03-11 14:36:44,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:44,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:44,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:44,481 INFO L87 Difference]: Start difference. First operand 389 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:44,566 INFO L93 Difference]: Finished difference Result 568 states and 1694 transitions. [2021-03-11 14:36:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:44,568 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:36:44,568 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:36:44,568 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:36:44,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 387. [2021-03-11 14:36:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4792746113989637) internal successors, (1343), 386 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1343 transitions. [2021-03-11 14:36:44,574 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1343 transitions. Word has length 22 [2021-03-11 14:36:44,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:44,574 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1343 transitions. [2021-03-11 14:36:44,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,574 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1343 transitions. [2021-03-11 14:36:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:44,575 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:44,575 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:44,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable481 [2021-03-11 14:36:44,575 INFO L428 AbstractCegarLoop]: === Iteration 483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:44,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:44,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1649310841, now seen corresponding path program 477 times [2021-03-11 14:36:44,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:44,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856217349] [2021-03-11 14:36:44,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:44,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:44,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:44,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:44,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:44,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:44,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:44,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:44,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:44,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:44,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:44,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:44,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:44,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:44,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856217349] [2021-03-11 14:36:44,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:44,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:44,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251893201] [2021-03-11 14:36:44,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:44,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:44,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:44,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:44,725 INFO L87 Difference]: Start difference. First operand 387 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:44,804 INFO L93 Difference]: Finished difference Result 563 states and 1684 transitions. [2021-03-11 14:36:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:44,805 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:36:44,805 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:36:44,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:36:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 389. [2021-03-11 14:36:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4690721649484537) internal successors, (1346), 388 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1346 transitions. [2021-03-11 14:36:44,811 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1346 transitions. Word has length 22 [2021-03-11 14:36:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:44,812 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1346 transitions. [2021-03-11 14:36:44,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1346 transitions. [2021-03-11 14:36:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:44,812 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:44,812 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:44,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable482 [2021-03-11 14:36:44,812 INFO L428 AbstractCegarLoop]: === Iteration 484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:44,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash -2110426653, now seen corresponding path program 478 times [2021-03-11 14:36:44,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:44,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194288362] [2021-03-11 14:36:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:44,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:44,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:44,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:44,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:44,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:44,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:44,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:44,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:44,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:44,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:44,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:44,937 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:44,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:44,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194288362] [2021-03-11 14:36:44,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:44,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:44,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684753524] [2021-03-11 14:36:44,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:44,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:44,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:44,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:44,962 INFO L87 Difference]: Start difference. First operand 389 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:45,055 INFO L93 Difference]: Finished difference Result 566 states and 1688 transitions. [2021-03-11 14:36:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:45,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:45,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:45,056 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:36:45,056 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:36:45,056 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:45,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:36:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 387. [2021-03-11 14:36:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4740932642487046) internal successors, (1341), 386 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1341 transitions. [2021-03-11 14:36:45,063 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1341 transitions. Word has length 22 [2021-03-11 14:36:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:45,063 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1341 transitions. [2021-03-11 14:36:45,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1341 transitions. [2021-03-11 14:36:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:45,063 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:45,063 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:45,063 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable483 [2021-03-11 14:36:45,063 INFO L428 AbstractCegarLoop]: === Iteration 485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:45,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1659813945, now seen corresponding path program 479 times [2021-03-11 14:36:45,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:45,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554087841] [2021-03-11 14:36:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:45,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:45,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:45,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:45,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:45,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:45,102 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:45,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:45,129 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:45,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:45,149 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:45,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:45,175 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:45,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:45,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554087841] [2021-03-11 14:36:45,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:45,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:45,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134495796] [2021-03-11 14:36:45,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:45,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:45,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:45,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:45,200 INFO L87 Difference]: Start difference. First operand 387 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:45,279 INFO L93 Difference]: Finished difference Result 574 states and 1707 transitions. [2021-03-11 14:36:45,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:45,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:45,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:45,280 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:36:45,280 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:36:45,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:36:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 392. [2021-03-11 14:36:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.452685421994885) internal successors, (1350), 391 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1350 transitions. [2021-03-11 14:36:45,287 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1350 transitions. Word has length 22 [2021-03-11 14:36:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:45,287 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1350 transitions. [2021-03-11 14:36:45,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1350 transitions. [2021-03-11 14:36:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:45,287 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:45,287 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:45,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable484 [2021-03-11 14:36:45,287 INFO L428 AbstractCegarLoop]: === Iteration 486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:45,288 INFO L82 PathProgramCache]: Analyzing trace with hash 584102789, now seen corresponding path program 480 times [2021-03-11 14:36:45,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:45,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651198818] [2021-03-11 14:36:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:45,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:45,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:45,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:45,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:45,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:45,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:45,353 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:45,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:45,374 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:45,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:45,399 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:45,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:45,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651198818] [2021-03-11 14:36:45,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:45,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:45,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664966774] [2021-03-11 14:36:45,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:45,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:45,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:45,424 INFO L87 Difference]: Start difference. First operand 392 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:45,520 INFO L93 Difference]: Finished difference Result 573 states and 1700 transitions. [2021-03-11 14:36:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:45,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:45,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:45,521 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:36:45,521 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:36:45,522 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:45,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:36:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 383. [2021-03-11 14:36:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.494764397905759) internal successors, (1335), 382 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1335 transitions. [2021-03-11 14:36:45,528 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1335 transitions. Word has length 22 [2021-03-11 14:36:45,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:45,528 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1335 transitions. [2021-03-11 14:36:45,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,528 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1335 transitions. [2021-03-11 14:36:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:45,528 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:45,528 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:45,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable485 [2021-03-11 14:36:45,528 INFO L428 AbstractCegarLoop]: === Iteration 487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:45,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1919618993, now seen corresponding path program 481 times [2021-03-11 14:36:45,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:45,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79662431] [2021-03-11 14:36:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:45,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:45,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:45,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:45,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:45,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:45,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:45,586 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:45,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:45,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:45,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:45,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:45,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79662431] [2021-03-11 14:36:45,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:45,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:45,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390778561] [2021-03-11 14:36:45,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:45,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:45,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:45,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:45,658 INFO L87 Difference]: Start difference. First operand 383 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:45,737 INFO L93 Difference]: Finished difference Result 633 states and 1919 transitions. [2021-03-11 14:36:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:45,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:45,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:45,739 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:36:45,739 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:36:45,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:45,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:36:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 394. [2021-03-11 14:36:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.50381679389313) internal successors, (1377), 393 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1377 transitions. [2021-03-11 14:36:45,746 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:45,746 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1377 transitions. [2021-03-11 14:36:45,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,746 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1377 transitions. [2021-03-11 14:36:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:45,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:45,746 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:45,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable486 [2021-03-11 14:36:45,746 INFO L428 AbstractCegarLoop]: === Iteration 488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:45,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1417077441, now seen corresponding path program 482 times [2021-03-11 14:36:45,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:45,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407558213] [2021-03-11 14:36:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:45,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:45,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:45,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:45,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:45,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:45,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:45,802 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:45,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:45,823 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:45,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:45,849 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:45,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:45,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407558213] [2021-03-11 14:36:45,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:45,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:45,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263288914] [2021-03-11 14:36:45,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:45,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:45,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:45,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:45,875 INFO L87 Difference]: Start difference. First operand 394 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:45,964 INFO L93 Difference]: Finished difference Result 632 states and 1915 transitions. [2021-03-11 14:36:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:45,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:45,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:45,965 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:36:45,965 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:36:45,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:36:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 392. [2021-03-11 14:36:45,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.5089514066496164) internal successors, (1372), 391 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1372 transitions. [2021-03-11 14:36:45,972 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1372 transitions. Word has length 22 [2021-03-11 14:36:45,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:45,972 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1372 transitions. [2021-03-11 14:36:45,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1372 transitions. [2021-03-11 14:36:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:45,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:45,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:45,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable487 [2021-03-11 14:36:45,972 INFO L428 AbstractCegarLoop]: === Iteration 489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:45,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:45,973 INFO L82 PathProgramCache]: Analyzing trace with hash 319181139, now seen corresponding path program 483 times [2021-03-11 14:36:45,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:45,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280742720] [2021-03-11 14:36:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:45,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:45,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:45,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:45,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:45,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:46,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:46,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:46,027 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:46,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:46,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:46,085 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:46,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:46,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:46,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280742720] [2021-03-11 14:36:46,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:46,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:46,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074678955] [2021-03-11 14:36:46,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:46,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:46,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:46,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:46,110 INFO L87 Difference]: Start difference. First operand 392 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:46,194 INFO L93 Difference]: Finished difference Result 638 states and 1928 transitions. [2021-03-11 14:36:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:46,195 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:46,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:46,196 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:36:46,196 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:36:46,196 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:46,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:36:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 395. [2021-03-11 14:36:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.49492385786802) internal successors, (1377), 394 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1377 transitions. [2021-03-11 14:36:46,203 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:46,203 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1377 transitions. [2021-03-11 14:36:46,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1377 transitions. [2021-03-11 14:36:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:46,203 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:46,204 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:46,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable488 [2021-03-11 14:36:46,204 INFO L428 AbstractCegarLoop]: === Iteration 490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash -732630083, now seen corresponding path program 484 times [2021-03-11 14:36:46,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:46,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744972048] [2021-03-11 14:36:46,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:46,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:46,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:46,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:46,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:46,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:46,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:46,259 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:46,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:46,292 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:46,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:46,324 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:46,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:46,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744972048] [2021-03-11 14:36:46,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:46,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:46,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75878170] [2021-03-11 14:36:46,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:46,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:46,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:46,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:46,349 INFO L87 Difference]: Start difference. First operand 395 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:46,445 INFO L93 Difference]: Finished difference Result 641 states and 1931 transitions. [2021-03-11 14:36:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:46,447 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:36:46,447 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:36:46,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:36:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 392. [2021-03-11 14:36:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:36:46,454 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:46,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:46,454 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:36:46,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,454 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:36:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:46,454 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:46,454 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:46,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable489 [2021-03-11 14:36:46,455 INFO L428 AbstractCegarLoop]: === Iteration 491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:46,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:46,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1734337025, now seen corresponding path program 485 times [2021-03-11 14:36:46,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:46,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198878527] [2021-03-11 14:36:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:46,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:46,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:46,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:46,488 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:46,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:46,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:46,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:46,544 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:46,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:46,572 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:46,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:46,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198878527] [2021-03-11 14:36:46,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:46,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:46,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262255070] [2021-03-11 14:36:46,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:46,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:46,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:46,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:46,601 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:46,679 INFO L93 Difference]: Finished difference Result 635 states and 1919 transitions. [2021-03-11 14:36:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:46,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:46,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:46,681 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:36:46,681 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:36:46,681 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:36:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 394. [2021-03-11 14:36:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4936386768447836) internal successors, (1373), 393 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1373 transitions. [2021-03-11 14:36:46,687 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1373 transitions. Word has length 22 [2021-03-11 14:36:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:46,687 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1373 transitions. [2021-03-11 14:36:46,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,687 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1373 transitions. [2021-03-11 14:36:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:46,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:46,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:46,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable490 [2021-03-11 14:36:46,688 INFO L428 AbstractCegarLoop]: === Iteration 492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:46,688 INFO L82 PathProgramCache]: Analyzing trace with hash 868450989, now seen corresponding path program 486 times [2021-03-11 14:36:46,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:46,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015573501] [2021-03-11 14:36:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:46,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:46,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:46,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:46,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:46,721 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:46,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:46,745 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:46,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:46,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:46,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:46,801 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:46,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:46,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:46,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015573501] [2021-03-11 14:36:46,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:46,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:46,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510868296] [2021-03-11 14:36:46,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:46,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:46,825 INFO L87 Difference]: Start difference. First operand 394 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:46,902 INFO L93 Difference]: Finished difference Result 639 states and 1925 transitions. [2021-03-11 14:36:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:46,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:46,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:46,903 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:36:46,903 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:36:46,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:46,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:36:46,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 390. [2021-03-11 14:36:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5089974293059125) internal successors, (1365), 389 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1365 transitions. [2021-03-11 14:36:46,910 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1365 transitions. Word has length 22 [2021-03-11 14:36:46,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:46,910 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1365 transitions. [2021-03-11 14:36:46,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:46,910 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1365 transitions. [2021-03-11 14:36:46,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:46,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:46,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:46,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable491 [2021-03-11 14:36:46,911 INFO L428 AbstractCegarLoop]: === Iteration 493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:46,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1046650883, now seen corresponding path program 487 times [2021-03-11 14:36:46,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:46,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103605727] [2021-03-11 14:36:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:46,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:46,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:46,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:46,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:46,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:46,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:46,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:46,955 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:46,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:46,975 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:46,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:47,000 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:47,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:47,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103605727] [2021-03-11 14:36:47,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:47,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:47,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776743827] [2021-03-11 14:36:47,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:47,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:47,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:47,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:47,024 INFO L87 Difference]: Start difference. First operand 390 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:47,101 INFO L93 Difference]: Finished difference Result 632 states and 1915 transitions. [2021-03-11 14:36:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:47,103 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:36:47,103 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:36:47,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:47,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:36:47,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 394. [2021-03-11 14:36:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4987277353689565) internal successors, (1375), 393 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1375 transitions. [2021-03-11 14:36:47,109 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:47,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:47,109 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1375 transitions. [2021-03-11 14:36:47,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,109 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1375 transitions. [2021-03-11 14:36:47,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:47,110 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:47,110 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:47,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable492 [2021-03-11 14:36:47,110 INFO L428 AbstractCegarLoop]: === Iteration 494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:47,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:47,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1549192435, now seen corresponding path program 488 times [2021-03-11 14:36:47,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:47,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115922909] [2021-03-11 14:36:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:47,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:47,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:47,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:47,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:47,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:47,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:47,154 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:47,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:47,174 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:47,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:47,199 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:47,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:47,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115922909] [2021-03-11 14:36:47,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:47,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691437193] [2021-03-11 14:36:47,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:47,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:47,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:47,224 INFO L87 Difference]: Start difference. First operand 394 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:47,300 INFO L93 Difference]: Finished difference Result 631 states and 1911 transitions. [2021-03-11 14:36:47,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:47,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:47,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:47,301 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:36:47,301 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:36:47,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:36:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 392. [2021-03-11 14:36:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:36:47,307 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:47,308 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:36:47,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:36:47,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:47,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:47,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:47,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable493 [2021-03-11 14:36:47,308 INFO L428 AbstractCegarLoop]: === Iteration 495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:47,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1634396205, now seen corresponding path program 489 times [2021-03-11 14:36:47,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714389853] [2021-03-11 14:36:47,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:47,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:47,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:47,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:47,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:47,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:47,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:47,352 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:47,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:47,372 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:47,397 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:47,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:47,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714389853] [2021-03-11 14:36:47,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:47,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:47,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441496337] [2021-03-11 14:36:47,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:47,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:47,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:47,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:47,421 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:47,498 INFO L93 Difference]: Finished difference Result 636 states and 1922 transitions. [2021-03-11 14:36:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:47,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:47,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:47,499 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:36:47,499 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:36:47,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:36:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 395. [2021-03-11 14:36:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.489847715736041) internal successors, (1375), 394 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1375 transitions. [2021-03-11 14:36:47,505 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:47,505 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1375 transitions. [2021-03-11 14:36:47,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1375 transitions. [2021-03-11 14:36:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:47,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:47,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:47,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable494 [2021-03-11 14:36:47,506 INFO L428 AbstractCegarLoop]: === Iteration 496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:47,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:47,506 INFO L82 PathProgramCache]: Analyzing trace with hash -477071607, now seen corresponding path program 490 times [2021-03-11 14:36:47,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:47,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585258846] [2021-03-11 14:36:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:47,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:47,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:47,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:47,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:47,535 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:47,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:47,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:47,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:47,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:47,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:47,595 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:47,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:47,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585258846] [2021-03-11 14:36:47,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:47,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:47,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405034790] [2021-03-11 14:36:47,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:47,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:47,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:47,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:47,619 INFO L87 Difference]: Start difference. First operand 395 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:47,699 INFO L93 Difference]: Finished difference Result 638 states and 1923 transitions. [2021-03-11 14:36:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:47,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:47,701 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:36:47,701 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:36:47,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:36:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 392. [2021-03-11 14:36:47,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.498721227621483) internal successors, (1368), 391 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1368 transitions. [2021-03-11 14:36:47,707 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:47,707 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1368 transitions. [2021-03-11 14:36:47,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1368 transitions. [2021-03-11 14:36:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:47,708 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:47,708 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:47,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable495 [2021-03-11 14:36:47,708 INFO L428 AbstractCegarLoop]: === Iteration 497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:47,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash -468658229, now seen corresponding path program 491 times [2021-03-11 14:36:47,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:47,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891879688] [2021-03-11 14:36:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:47,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:47,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:47,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:47,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:47,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:47,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:47,752 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:47,790 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:47,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:47,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:47,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:47,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891879688] [2021-03-11 14:36:47,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:47,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:47,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709005550] [2021-03-11 14:36:47,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:47,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:47,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:47,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:47,839 INFO L87 Difference]: Start difference. First operand 392 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:47,914 INFO L93 Difference]: Finished difference Result 633 states and 1913 transitions. [2021-03-11 14:36:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:47,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:47,915 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:36:47,915 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:36:47,916 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:36:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 394. [2021-03-11 14:36:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4885496183206106) internal successors, (1371), 393 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1371 transitions. [2021-03-11 14:36:47,922 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:47,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:47,922 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1371 transitions. [2021-03-11 14:36:47,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:47,922 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1371 transitions. [2021-03-11 14:36:47,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:47,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:47,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:47,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable496 [2021-03-11 14:36:47,923 INFO L428 AbstractCegarLoop]: === Iteration 498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:47,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:47,923 INFO L82 PathProgramCache]: Analyzing trace with hash 102796577, now seen corresponding path program 492 times [2021-03-11 14:36:47,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:47,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086063344] [2021-03-11 14:36:47,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:47,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:47,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:47,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:47,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:47,951 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:47,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:47,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:47,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:48,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:48,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:48,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:48,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:48,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086063344] [2021-03-11 14:36:48,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:48,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:48,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134900934] [2021-03-11 14:36:48,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:48,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:48,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:48,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:48,051 INFO L87 Difference]: Start difference. First operand 394 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:48,129 INFO L93 Difference]: Finished difference Result 636 states and 1917 transitions. [2021-03-11 14:36:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:48,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:48,130 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:36:48,130 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:36:48,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:36:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 390. [2021-03-11 14:36:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.5038560411311055) internal successors, (1363), 389 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1363 transitions. [2021-03-11 14:36:48,137 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:48,137 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1363 transitions. [2021-03-11 14:36:48,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1363 transitions. [2021-03-11 14:36:48,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:48,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:48,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:48,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable497 [2021-03-11 14:36:48,137 INFO L428 AbstractCegarLoop]: === Iteration 499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:48,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash -721054659, now seen corresponding path program 493 times [2021-03-11 14:36:48,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:48,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861700395] [2021-03-11 14:36:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:48,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:48,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:48,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:48,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:48,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:48,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:48,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:48,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:48,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:48,213 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:48,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:48,238 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:48,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:48,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:48,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861700395] [2021-03-11 14:36:48,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:48,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:48,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785476862] [2021-03-11 14:36:48,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:48,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:48,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:48,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:48,262 INFO L87 Difference]: Start difference. First operand 390 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:48,337 INFO L93 Difference]: Finished difference Result 646 states and 1948 transitions. [2021-03-11 14:36:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:48,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:48,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:48,338 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:36:48,338 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:36:48,338 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 150.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:36:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 396. [2021-03-11 14:36:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.491139240506329) internal successors, (1379), 395 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1379 transitions. [2021-03-11 14:36:48,344 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1379 transitions. Word has length 22 [2021-03-11 14:36:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:48,345 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1379 transitions. [2021-03-11 14:36:48,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,345 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1379 transitions. [2021-03-11 14:36:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:48,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:48,345 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:48,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable498 [2021-03-11 14:36:48,345 INFO L428 AbstractCegarLoop]: === Iteration 500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:48,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1772865881, now seen corresponding path program 494 times [2021-03-11 14:36:48,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:48,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972954932] [2021-03-11 14:36:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:48,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:48,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:48,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:48,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:48,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:48,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:48,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:48,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:48,422 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:48,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:48,448 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:48,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:48,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972954932] [2021-03-11 14:36:48,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:48,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:48,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832165114] [2021-03-11 14:36:48,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:48,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:48,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:48,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:48,472 INFO L87 Difference]: Start difference. First operand 396 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:48,555 INFO L93 Difference]: Finished difference Result 649 states and 1951 transitions. [2021-03-11 14:36:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:48,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:48,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:48,557 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:36:48,557 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:48,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 393. [2021-03-11 14:36:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.497448979591837) internal successors, (1371), 392 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1371 transitions. [2021-03-11 14:36:48,563 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:48,563 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1371 transitions. [2021-03-11 14:36:48,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1371 transitions. [2021-03-11 14:36:48,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:48,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:48,564 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:48,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable499 [2021-03-11 14:36:48,564 INFO L428 AbstractCegarLoop]: === Iteration 501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 291637873, now seen corresponding path program 495 times [2021-03-11 14:36:48,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:48,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204048677] [2021-03-11 14:36:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:48,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:48,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:48,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:48,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:48,593 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:48,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:48,608 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:48,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:48,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:48,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:48,653 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:48,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:48,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:48,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204048677] [2021-03-11 14:36:48,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:48,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:48,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849724858] [2021-03-11 14:36:48,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:48,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:48,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:48,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:48,678 INFO L87 Difference]: Start difference. First operand 393 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:48,754 INFO L93 Difference]: Finished difference Result 645 states and 1943 transitions. [2021-03-11 14:36:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:48,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:48,756 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:48,756 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:36:48,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:36:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 396. [2021-03-11 14:36:48,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4835443037974683) internal successors, (1376), 395 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1376 transitions. [2021-03-11 14:36:48,762 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1376 transitions. Word has length 22 [2021-03-11 14:36:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:48,762 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1376 transitions. [2021-03-11 14:36:48,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1376 transitions. [2021-03-11 14:36:48,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:48,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:48,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:48,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable500 [2021-03-11 14:36:48,763 INFO L428 AbstractCegarLoop]: === Iteration 502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:48,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1448962471, now seen corresponding path program 496 times [2021-03-11 14:36:48,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:48,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99154549] [2021-03-11 14:36:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:48,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:48,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:48,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:48,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:48,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:48,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:48,807 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:48,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:48,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:48,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:48,853 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:48,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:48,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99154549] [2021-03-11 14:36:48,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:48,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:48,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209980129] [2021-03-11 14:36:48,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:48,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:48,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:48,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:48,883 INFO L87 Difference]: Start difference. First operand 396 states and 1376 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:48,966 INFO L93 Difference]: Finished difference Result 647 states and 1944 transitions. [2021-03-11 14:36:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:48,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:48,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:48,968 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:36:48,968 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:36:48,968 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:48,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:36:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 393. [2021-03-11 14:36:48,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.489795918367347) internal successors, (1368), 392 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1368 transitions. [2021-03-11 14:36:48,974 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:48,975 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1368 transitions. [2021-03-11 14:36:48,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1368 transitions. [2021-03-11 14:36:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:48,975 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:48,975 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:48,975 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable501 [2021-03-11 14:36:48,975 INFO L428 AbstractCegarLoop]: === Iteration 503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash -255541711, now seen corresponding path program 497 times [2021-03-11 14:36:48,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:48,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033710132] [2021-03-11 14:36:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:48,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:48,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:48,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:48,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:48,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:49,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:49,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:49,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:49,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:49,042 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:49,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:49,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:49,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:49,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033710132] [2021-03-11 14:36:49,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:49,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:49,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104556685] [2021-03-11 14:36:49,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:49,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:49,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:49,094 INFO L87 Difference]: Start difference. First operand 393 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:49,180 INFO L93 Difference]: Finished difference Result 653 states and 1958 transitions. [2021-03-11 14:36:49,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:49,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:49,181 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:36:49,181 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:36:49,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:36:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 398. [2021-03-11 14:36:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.468513853904282) internal successors, (1377), 397 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1377 transitions. [2021-03-11 14:36:49,188 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:49,188 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1377 transitions. [2021-03-11 14:36:49,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1377 transitions. [2021-03-11 14:36:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:49,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:49,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:49,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable502 [2021-03-11 14:36:49,189 INFO L428 AbstractCegarLoop]: === Iteration 504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:49,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1092414339, now seen corresponding path program 498 times [2021-03-11 14:36:49,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:49,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532240919] [2021-03-11 14:36:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:49,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:49,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:49,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:49,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:49,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:49,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:49,234 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:49,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:49,254 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:49,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:49,279 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:49,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:49,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532240919] [2021-03-11 14:36:49,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:49,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:49,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279781619] [2021-03-11 14:36:49,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:49,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:49,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:49,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:49,304 INFO L87 Difference]: Start difference. First operand 398 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:49,384 INFO L93 Difference]: Finished difference Result 652 states and 1951 transitions. [2021-03-11 14:36:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:49,385 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:36:49,386 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:36:49,386 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:36:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 390. [2021-03-11 14:36:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.498714652956298) internal successors, (1361), 389 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1361 transitions. [2021-03-11 14:36:49,392 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1361 transitions. Word has length 22 [2021-03-11 14:36:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:49,392 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1361 transitions. [2021-03-11 14:36:49,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1361 transitions. [2021-03-11 14:36:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:49,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:49,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:49,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable503 [2021-03-11 14:36:49,393 INFO L428 AbstractCegarLoop]: === Iteration 505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1697452289, now seen corresponding path program 499 times [2021-03-11 14:36:49,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:49,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103246514] [2021-03-11 14:36:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:49,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:49,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:49,422 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:49,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:49,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:49,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:49,479 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:49,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:49,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:49,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:49,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103246514] [2021-03-11 14:36:49,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:49,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:49,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745989859] [2021-03-11 14:36:49,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:49,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:49,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:49,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:49,529 INFO L87 Difference]: Start difference. First operand 390 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:49,607 INFO L93 Difference]: Finished difference Result 639 states and 1927 transitions. [2021-03-11 14:36:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:49,608 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:36:49,608 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:36:49,608 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:36:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 394. [2021-03-11 14:36:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4885496183206106) internal successors, (1371), 393 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1371 transitions. [2021-03-11 14:36:49,615 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:49,615 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1371 transitions. [2021-03-11 14:36:49,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1371 transitions. [2021-03-11 14:36:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:49,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:49,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:49,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504 [2021-03-11 14:36:49,616 INFO L428 AbstractCegarLoop]: === Iteration 506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash 5273007, now seen corresponding path program 500 times [2021-03-11 14:36:49,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:49,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266919991] [2021-03-11 14:36:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:49,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:49,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:49,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:49,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:49,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:49,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:49,671 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:49,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:49,702 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:49,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:49,728 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:49,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:49,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266919991] [2021-03-11 14:36:49,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:49,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:49,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824644794] [2021-03-11 14:36:49,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:49,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:49,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:49,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:49,753 INFO L87 Difference]: Start difference. First operand 394 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:49,829 INFO L93 Difference]: Finished difference Result 643 states and 1933 transitions. [2021-03-11 14:36:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:49,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:49,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:49,830 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:36:49,830 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:36:49,830 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:36:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 392. [2021-03-11 14:36:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.493606138107417) internal successors, (1366), 391 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1366 transitions. [2021-03-11 14:36:49,837 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1366 transitions. Word has length 22 [2021-03-11 14:36:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:49,837 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1366 transitions. [2021-03-11 14:36:49,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1366 transitions. [2021-03-11 14:36:49,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:49,837 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:49,837 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:49,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505 [2021-03-11 14:36:49,837 INFO L428 AbstractCegarLoop]: === Iteration 507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:49,838 INFO L82 PathProgramCache]: Analyzing trace with hash 621741133, now seen corresponding path program 501 times [2021-03-11 14:36:49,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:49,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140428714] [2021-03-11 14:36:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:49,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:49,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:49,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:49,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:49,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:49,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:49,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:49,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:49,928 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:49,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:49,953 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:49,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:49,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140428714] [2021-03-11 14:36:49,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:49,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:49,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379465433] [2021-03-11 14:36:49,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:49,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:49,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:49,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:49,982 INFO L87 Difference]: Start difference. First operand 392 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:50,062 INFO L93 Difference]: Finished difference Result 638 states and 1923 transitions. [2021-03-11 14:36:50,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:50,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:50,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:50,064 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:36:50,064 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:36:50,064 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:50,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:36:50,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 394. [2021-03-11 14:36:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4834605597964376) internal successors, (1369), 393 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1369 transitions. [2021-03-11 14:36:50,070 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1369 transitions. Word has length 22 [2021-03-11 14:36:50,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:50,070 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1369 transitions. [2021-03-11 14:36:50,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,070 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1369 transitions. [2021-03-11 14:36:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:50,071 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:50,071 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:50,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable506 [2021-03-11 14:36:50,071 INFO L428 AbstractCegarLoop]: === Iteration 508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:50,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1193195939, now seen corresponding path program 502 times [2021-03-11 14:36:50,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:50,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748900387] [2021-03-11 14:36:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:50,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:50,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:50,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:50,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:50,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:50,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:50,127 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:50,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:50,161 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:50,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:50,187 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:50,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:50,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748900387] [2021-03-11 14:36:50,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:50,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:50,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30422365] [2021-03-11 14:36:50,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:50,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:50,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:50,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:50,212 INFO L87 Difference]: Start difference. First operand 394 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:50,307 INFO L93 Difference]: Finished difference Result 641 states and 1927 transitions. [2021-03-11 14:36:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:50,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:50,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:50,309 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:36:50,309 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:36:50,309 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:36:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 392. [2021-03-11 14:36:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4884910485933505) internal successors, (1364), 391 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1364 transitions. [2021-03-11 14:36:50,315 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1364 transitions. Word has length 22 [2021-03-11 14:36:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:50,316 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1364 transitions. [2021-03-11 14:36:50,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,316 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1364 transitions. [2021-03-11 14:36:50,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:50,316 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:50,316 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:50,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable507 [2021-03-11 14:36:50,316 INFO L428 AbstractCegarLoop]: === Iteration 509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:50,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:50,316 INFO L82 PathProgramCache]: Analyzing trace with hash 540502809, now seen corresponding path program 503 times [2021-03-11 14:36:50,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:50,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432161762] [2021-03-11 14:36:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:50,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:50,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:50,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:50,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:50,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:50,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:50,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:50,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:50,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:50,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:50,431 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:50,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:50,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:50,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432161762] [2021-03-11 14:36:50,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:50,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:50,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466147523] [2021-03-11 14:36:50,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:50,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:50,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:50,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:50,456 INFO L87 Difference]: Start difference. First operand 392 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:50,540 INFO L93 Difference]: Finished difference Result 649 states and 1946 transitions. [2021-03-11 14:36:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:50,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:50,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:50,542 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:36:50,542 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:36:50,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:50,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:36:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 397. [2021-03-11 14:36:50,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.467171717171717) internal successors, (1373), 396 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1373 transitions. [2021-03-11 14:36:50,548 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1373 transitions. Word has length 22 [2021-03-11 14:36:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:50,548 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1373 transitions. [2021-03-11 14:36:50,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,548 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1373 transitions. [2021-03-11 14:36:50,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:50,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:50,549 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:50,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508 [2021-03-11 14:36:50,549 INFO L428 AbstractCegarLoop]: === Iteration 510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:50,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:50,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1296458637, now seen corresponding path program 504 times [2021-03-11 14:36:50,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:50,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934742539] [2021-03-11 14:36:50,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:50,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:50,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:50,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:50,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:50,578 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:50,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:50,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:50,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:50,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:50,651 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:50,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934742539] [2021-03-11 14:36:50,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:50,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:50,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126479378] [2021-03-11 14:36:50,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:50,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:50,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:50,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:50,676 INFO L87 Difference]: Start difference. First operand 397 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:50,762 INFO L93 Difference]: Finished difference Result 648 states and 1939 transitions. [2021-03-11 14:36:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:50,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:50,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:50,763 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:36:50,763 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:36:50,763 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:36:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 388. [2021-03-11 14:36:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.503875968992248) internal successors, (1356), 387 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1356 transitions. [2021-03-11 14:36:50,770 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1356 transitions. Word has length 22 [2021-03-11 14:36:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:50,770 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1356 transitions. [2021-03-11 14:36:50,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1356 transitions. [2021-03-11 14:36:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:50,770 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:50,770 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:50,770 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509 [2021-03-11 14:36:50,770 INFO L428 AbstractCegarLoop]: === Iteration 511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:50,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:50,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1497133267, now seen corresponding path program 505 times [2021-03-11 14:36:50,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:50,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198691120] [2021-03-11 14:36:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:50,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:50,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:50,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:50,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:50,790 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:50,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:50,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:50,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:50,832 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:50,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:50,852 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:50,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:50,878 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:50,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:50,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:50,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198691120] [2021-03-11 14:36:50,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:50,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:50,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835658478] [2021-03-11 14:36:50,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:50,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:50,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:50,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:50,903 INFO L87 Difference]: Start difference. First operand 388 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:50,987 INFO L93 Difference]: Finished difference Result 648 states and 1952 transitions. [2021-03-11 14:36:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:50,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:50,988 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:36:50,988 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:36:50,989 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:50,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:36:50,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 396. [2021-03-11 14:36:50,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.49873417721519) internal successors, (1382), 395 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1382 transitions. [2021-03-11 14:36:50,995 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1382 transitions. Word has length 22 [2021-03-11 14:36:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:50,995 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1382 transitions. [2021-03-11 14:36:50,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:50,995 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1382 transitions. [2021-03-11 14:36:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:50,996 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:50,996 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:50,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable510 [2021-03-11 14:36:50,996 INFO L428 AbstractCegarLoop]: === Iteration 512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash 994591715, now seen corresponding path program 506 times [2021-03-11 14:36:50,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:50,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813266823] [2021-03-11 14:36:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:51,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:51,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:51,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:51,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:51,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:51,034 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:51,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:51,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:51,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:51,079 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:51,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:51,113 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:51,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:51,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813266823] [2021-03-11 14:36:51,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:51,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:51,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161382989] [2021-03-11 14:36:51,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:51,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:51,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:51,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:51,138 INFO L87 Difference]: Start difference. First operand 396 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:51,241 INFO L93 Difference]: Finished difference Result 647 states and 1948 transitions. [2021-03-11 14:36:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:51,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:51,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:51,242 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:36:51,242 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:36:51,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:51,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:36:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 394. [2021-03-11 14:36:51,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.50381679389313) internal successors, (1377), 393 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1377 transitions. [2021-03-11 14:36:51,249 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1377 transitions. Word has length 22 [2021-03-11 14:36:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:51,249 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1377 transitions. [2021-03-11 14:36:51,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1377 transitions. [2021-03-11 14:36:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:51,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:51,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:51,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable511 [2021-03-11 14:36:51,250 INFO L428 AbstractCegarLoop]: === Iteration 513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:51,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:51,250 INFO L82 PathProgramCache]: Analyzing trace with hash -103304587, now seen corresponding path program 507 times [2021-03-11 14:36:51,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:51,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138319446] [2021-03-11 14:36:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:51,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:51,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:51,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:51,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:51,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:51,287 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:51,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:51,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:51,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:51,347 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:51,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:51,373 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:51,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:51,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138319446] [2021-03-11 14:36:51,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:51,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:51,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280986930] [2021-03-11 14:36:51,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:51,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:51,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:51,398 INFO L87 Difference]: Start difference. First operand 394 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:51,483 INFO L93 Difference]: Finished difference Result 653 states and 1961 transitions. [2021-03-11 14:36:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:51,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:51,485 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:36:51,485 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:36:51,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:36:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 397. [2021-03-11 14:36:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.48989898989899) internal successors, (1382), 396 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1382 transitions. [2021-03-11 14:36:51,491 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1382 transitions. Word has length 22 [2021-03-11 14:36:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:51,491 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1382 transitions. [2021-03-11 14:36:51,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1382 transitions. [2021-03-11 14:36:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:51,492 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:51,492 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:51,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable512 [2021-03-11 14:36:51,492 INFO L428 AbstractCegarLoop]: === Iteration 514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:51,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1155115809, now seen corresponding path program 508 times [2021-03-11 14:36:51,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:51,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248446876] [2021-03-11 14:36:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:51,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:51,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:51,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:51,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:51,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:51,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:51,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:51,554 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:51,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:51,588 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:51,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:51,614 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:51,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:51,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248446876] [2021-03-11 14:36:51,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:51,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:51,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356083787] [2021-03-11 14:36:51,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:51,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:51,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:51,639 INFO L87 Difference]: Start difference. First operand 397 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:51,727 INFO L93 Difference]: Finished difference Result 656 states and 1964 transitions. [2021-03-11 14:36:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:51,729 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:36:51,729 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:36:51,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:51,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:36:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 394. [2021-03-11 14:36:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4987277353689565) internal successors, (1375), 393 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1375 transitions. [2021-03-11 14:36:51,735 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:51,735 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1375 transitions. [2021-03-11 14:36:51,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1375 transitions. [2021-03-11 14:36:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:51,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:51,736 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:51,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513 [2021-03-11 14:36:51,736 INFO L428 AbstractCegarLoop]: === Iteration 515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:51,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:51,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2138144545, now seen corresponding path program 509 times [2021-03-11 14:36:51,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:51,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179070999] [2021-03-11 14:36:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:51,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:51,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:51,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:51,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:51,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:51,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:51,798 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:51,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:51,829 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:51,855 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:51,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:51,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:51,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179070999] [2021-03-11 14:36:51,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:51,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:51,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528224227] [2021-03-11 14:36:51,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:51,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:51,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:51,880 INFO L87 Difference]: Start difference. First operand 394 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:51,963 INFO L93 Difference]: Finished difference Result 650 states and 1952 transitions. [2021-03-11 14:36:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:51,965 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:36:51,965 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:36:51,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:36:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 396. [2021-03-11 14:36:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.488607594936709) internal successors, (1378), 395 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1378 transitions. [2021-03-11 14:36:51,972 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:51,972 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1378 transitions. [2021-03-11 14:36:51,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1378 transitions. [2021-03-11 14:36:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:51,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:51,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:51,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable514 [2021-03-11 14:36:51,972 INFO L428 AbstractCegarLoop]: === Iteration 516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash 445965263, now seen corresponding path program 510 times [2021-03-11 14:36:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:51,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627199980] [2021-03-11 14:36:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:51,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:51,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:51,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:51,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:51,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:51,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:52,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:36:52,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:36:52,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:52,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:52,066 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:52,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:52,092 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:52,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:52,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627199980] [2021-03-11 14:36:52,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:52,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:52,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848434297] [2021-03-11 14:36:52,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:52,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:52,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:52,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:52,117 INFO L87 Difference]: Start difference. First operand 396 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:52,204 INFO L93 Difference]: Finished difference Result 654 states and 1958 transitions. [2021-03-11 14:36:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:52,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:52,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:52,205 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:36:52,206 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:36:52,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:36:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 392. [2021-03-11 14:36:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.50383631713555) internal successors, (1370), 391 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1370 transitions. [2021-03-11 14:36:52,212 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:52,212 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1370 transitions. [2021-03-11 14:36:52,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1370 transitions. [2021-03-11 14:36:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:52,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:52,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:52,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable515 [2021-03-11 14:36:52,213 INFO L428 AbstractCegarLoop]: === Iteration 517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:52,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:52,213 INFO L82 PathProgramCache]: Analyzing trace with hash 456897469, now seen corresponding path program 511 times [2021-03-11 14:36:52,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:52,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635888523] [2021-03-11 14:36:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:52,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:52,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:52,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:52,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:52,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:52,254 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:52,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:52,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:52,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:52,301 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:52,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:52,326 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:52,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:52,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635888523] [2021-03-11 14:36:52,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:52,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:52,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131002732] [2021-03-11 14:36:52,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:52,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:52,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:52,351 INFO L87 Difference]: Start difference. First operand 392 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:52,444 INFO L93 Difference]: Finished difference Result 653 states and 1960 transitions. [2021-03-11 14:36:52,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:52,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:52,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:52,445 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:36:52,445 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:36:52,445 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:36:52,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 397. [2021-03-11 14:36:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.492424242424242) internal successors, (1383), 396 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1383 transitions. [2021-03-11 14:36:52,452 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1383 transitions. Word has length 22 [2021-03-11 14:36:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:52,452 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1383 transitions. [2021-03-11 14:36:52,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1383 transitions. [2021-03-11 14:36:52,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:52,453 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:52,453 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:52,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable516 [2021-03-11 14:36:52,453 INFO L428 AbstractCegarLoop]: === Iteration 518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:52,453 INFO L82 PathProgramCache]: Analyzing trace with hash -45644083, now seen corresponding path program 512 times [2021-03-11 14:36:52,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:52,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418604164] [2021-03-11 14:36:52,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:52,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:52,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:52,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:52,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:52,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:52,490 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:52,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:52,517 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:52,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:52,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:52,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:52,562 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:52,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:52,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418604164] [2021-03-11 14:36:52,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:52,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:52,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675438863] [2021-03-11 14:36:52,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:52,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:52,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:52,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:52,588 INFO L87 Difference]: Start difference. First operand 397 states and 1383 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:52,687 INFO L93 Difference]: Finished difference Result 652 states and 1956 transitions. [2021-03-11 14:36:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:52,689 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:36:52,689 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:36:52,689 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:36:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 395. [2021-03-11 14:36:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.49746192893401) internal successors, (1378), 394 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1378 transitions. [2021-03-11 14:36:52,695 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:52,695 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1378 transitions. [2021-03-11 14:36:52,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,695 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1378 transitions. [2021-03-11 14:36:52,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:52,696 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:52,696 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:52,696 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable517 [2021-03-11 14:36:52,696 INFO L428 AbstractCegarLoop]: === Iteration 519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:52,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1731285707, now seen corresponding path program 513 times [2021-03-11 14:36:52,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:52,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588499302] [2021-03-11 14:36:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:52,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:52,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:52,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:52,715 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:52,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:52,734 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:52,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:52,761 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:52,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:52,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:52,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:52,824 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:52,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588499302] [2021-03-11 14:36:52,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:52,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:52,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211701206] [2021-03-11 14:36:52,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:52,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:52,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:52,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:52,850 INFO L87 Difference]: Start difference. First operand 395 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:52,940 INFO L93 Difference]: Finished difference Result 661 states and 1974 transitions. [2021-03-11 14:36:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:52,942 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:36:52,942 INFO L226 Difference]: Without dead ends: 650 [2021-03-11 14:36:52,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:52,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-03-11 14:36:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 399. [2021-03-11 14:36:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.479899497487437) internal successors, (1385), 398 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1385 transitions. [2021-03-11 14:36:52,949 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1385 transitions. Word has length 22 [2021-03-11 14:36:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:52,949 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1385 transitions. [2021-03-11 14:36:52,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1385 transitions. [2021-03-11 14:36:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:52,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:52,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:52,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable518 [2021-03-11 14:36:52,950 INFO L428 AbstractCegarLoop]: === Iteration 520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1657978295, now seen corresponding path program 514 times [2021-03-11 14:36:52,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:52,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785285210] [2021-03-11 14:36:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:52,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:52,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:52,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:52,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:52,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:52,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:52,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:53,017 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:53,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:53,054 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:53,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:53,081 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:53,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:53,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785285210] [2021-03-11 14:36:53,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:53,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:53,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867220156] [2021-03-11 14:36:53,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:53,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:53,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:53,107 INFO L87 Difference]: Start difference. First operand 399 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:53,176 INFO L93 Difference]: Finished difference Result 666 states and 1980 transitions. [2021-03-11 14:36:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:53,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:53,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:53,177 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:36:53,178 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:36:53,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:36:53,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 395. [2021-03-11 14:36:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.489847715736041) internal successors, (1375), 394 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1375 transitions. [2021-03-11 14:36:53,184 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:53,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:53,184 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1375 transitions. [2021-03-11 14:36:53,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1375 transitions. [2021-03-11 14:36:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:53,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:53,185 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:53,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable519 [2021-03-11 14:36:53,185 INFO L428 AbstractCegarLoop]: === Iteration 521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1045393227, now seen corresponding path program 515 times [2021-03-11 14:36:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:53,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819237444] [2021-03-11 14:36:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:53,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:53,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:53,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:53,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:53,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:53,222 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:53,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:53,250 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:53,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:53,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:53,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:53,305 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:53,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:53,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819237444] [2021-03-11 14:36:53,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:53,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:53,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345382361] [2021-03-11 14:36:53,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:53,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:53,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:53,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:53,330 INFO L87 Difference]: Start difference. First operand 395 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:53,419 INFO L93 Difference]: Finished difference Result 658 states and 1964 transitions. [2021-03-11 14:36:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:53,420 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:36:53,420 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:36:53,420 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:36:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 398. [2021-03-11 14:36:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4760705289672544) internal successors, (1380), 397 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1380 transitions. [2021-03-11 14:36:53,427 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1380 transitions. Word has length 22 [2021-03-11 14:36:53,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:53,427 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1380 transitions. [2021-03-11 14:36:53,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,427 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1380 transitions. [2021-03-11 14:36:53,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:53,427 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:53,427 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:53,427 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable520 [2021-03-11 14:36:53,428 INFO L428 AbstractCegarLoop]: === Iteration 522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:53,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1933416765, now seen corresponding path program 516 times [2021-03-11 14:36:53,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:53,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041605280] [2021-03-11 14:36:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:53,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:53,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:53,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:53,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:53,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:53,465 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:53,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:53,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:53,521 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:53,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:53,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:53,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:53,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041605280] [2021-03-11 14:36:53,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:53,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:53,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545115595] [2021-03-11 14:36:53,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:53,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:53,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:53,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:53,573 INFO L87 Difference]: Start difference. First operand 398 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:53,655 INFO L93 Difference]: Finished difference Result 664 states and 1973 transitions. [2021-03-11 14:36:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:53,657 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:36:53,657 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:36:53,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:36:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 392. [2021-03-11 14:36:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.49616368286445) internal successors, (1367), 391 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1367 transitions. [2021-03-11 14:36:53,664 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1367 transitions. Word has length 22 [2021-03-11 14:36:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:53,664 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1367 transitions. [2021-03-11 14:36:53,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1367 transitions. [2021-03-11 14:36:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:53,664 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:53,664 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:53,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable521 [2021-03-11 14:36:53,664 INFO L428 AbstractCegarLoop]: === Iteration 523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:53,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash 782493693, now seen corresponding path program 517 times [2021-03-11 14:36:53,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:53,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295815337] [2021-03-11 14:36:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:53,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:53,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:53,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:53,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:53,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:53,703 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:53,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:53,729 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:53,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:53,762 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:53,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:53,787 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:53,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:53,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295815337] [2021-03-11 14:36:53,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:53,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:53,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713524020] [2021-03-11 14:36:53,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:53,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:53,812 INFO L87 Difference]: Start difference. First operand 392 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:53,901 INFO L93 Difference]: Finished difference Result 670 states and 1998 transitions. [2021-03-11 14:36:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:53,902 INFO L225 Difference]: With dead ends: 670 [2021-03-11 14:36:53,902 INFO L226 Difference]: Without dead ends: 659 [2021-03-11 14:36:53,903 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-03-11 14:36:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 400. [2021-03-11 14:36:53,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4786967418546366) internal successors, (1388), 399 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1388 transitions. [2021-03-11 14:36:53,909 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1388 transitions. Word has length 22 [2021-03-11 14:36:53,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:53,909 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1388 transitions. [2021-03-11 14:36:53,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1388 transitions. [2021-03-11 14:36:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:53,910 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:53,910 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:53,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable522 [2021-03-11 14:36:53,910 INFO L428 AbstractCegarLoop]: === Iteration 524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:53,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:53,910 INFO L82 PathProgramCache]: Analyzing trace with hash -269317529, now seen corresponding path program 518 times [2021-03-11 14:36:53,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:53,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762201799] [2021-03-11 14:36:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:53,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:53,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:53,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:53,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:53,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:53,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:53,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:53,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:53,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:53,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:54,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:54,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:54,032 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:54,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:54,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762201799] [2021-03-11 14:36:54,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:54,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:54,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728697382] [2021-03-11 14:36:54,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:54,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:54,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:54,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:54,057 INFO L87 Difference]: Start difference. First operand 400 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:54,141 INFO L93 Difference]: Finished difference Result 673 states and 2001 transitions. [2021-03-11 14:36:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:54,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:54,142 INFO L225 Difference]: With dead ends: 673 [2021-03-11 14:36:54,142 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:54,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:54,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 397. [2021-03-11 14:36:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.484848484848485) internal successors, (1380), 396 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1380 transitions. [2021-03-11 14:36:54,149 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1380 transitions. Word has length 22 [2021-03-11 14:36:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:54,149 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1380 transitions. [2021-03-11 14:36:54,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,149 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1380 transitions. [2021-03-11 14:36:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:54,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:54,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:54,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable523 [2021-03-11 14:36:54,150 INFO L428 AbstractCegarLoop]: === Iteration 525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:54,150 INFO L82 PathProgramCache]: Analyzing trace with hash 194748371, now seen corresponding path program 519 times [2021-03-11 14:36:54,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:54,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558405979] [2021-03-11 14:36:54,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:54,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:54,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:54,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:54,169 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:54,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:54,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:54,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:54,214 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:54,249 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:54,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:54,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:54,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:54,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558405979] [2021-03-11 14:36:54,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:54,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:54,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367861549] [2021-03-11 14:36:54,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:54,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:54,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:54,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:54,300 INFO L87 Difference]: Start difference. First operand 397 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:54,396 INFO L93 Difference]: Finished difference Result 673 states and 2000 transitions. [2021-03-11 14:36:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:54,398 INFO L225 Difference]: With dead ends: 673 [2021-03-11 14:36:54,398 INFO L226 Difference]: Without dead ends: 662 [2021-03-11 14:36:54,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:54,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-03-11 14:36:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 401. [2021-03-11 14:36:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.4675) internal successors, (1387), 400 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1387 transitions. [2021-03-11 14:36:54,405 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1387 transitions. Word has length 22 [2021-03-11 14:36:54,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:54,405 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1387 transitions. [2021-03-11 14:36:54,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1387 transitions. [2021-03-11 14:36:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:54,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:54,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:54,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable524 [2021-03-11 14:36:54,405 INFO L428 AbstractCegarLoop]: === Iteration 526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:54,406 INFO L82 PathProgramCache]: Analyzing trace with hash 268055783, now seen corresponding path program 520 times [2021-03-11 14:36:54,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:54,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770123970] [2021-03-11 14:36:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:54,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:54,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:54,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:54,424 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:54,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:54,443 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:54,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:54,469 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:54,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:54,508 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:54,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:54,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:54,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:54,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770123970] [2021-03-11 14:36:54,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:54,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:54,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269245048] [2021-03-11 14:36:54,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:54,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:54,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:54,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:54,560 INFO L87 Difference]: Start difference. First operand 401 states and 1387 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:54,641 INFO L93 Difference]: Finished difference Result 678 states and 2006 transitions. [2021-03-11 14:36:54,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:54,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:54,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:54,642 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:36:54,642 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:36:54,642 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:36:54,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 397. [2021-03-11 14:36:54,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.474747474747475) internal successors, (1376), 396 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1376 transitions. [2021-03-11 14:36:54,649 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1376 transitions. Word has length 22 [2021-03-11 14:36:54,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:54,649 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1376 transitions. [2021-03-11 14:36:54,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,649 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1376 transitions. [2021-03-11 14:36:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:54,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:54,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:54,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable525 [2021-03-11 14:36:54,650 INFO L428 AbstractCegarLoop]: === Iteration 527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:54,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:54,650 INFO L82 PathProgramCache]: Analyzing trace with hash 2003212243, now seen corresponding path program 521 times [2021-03-11 14:36:54,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:54,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300205103] [2021-03-11 14:36:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:54,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:54,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:54,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:54,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:54,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:54,687 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:54,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:54,713 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:54,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:54,734 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:54,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:54,760 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:54,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:54,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300205103] [2021-03-11 14:36:54,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:54,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:54,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459333568] [2021-03-11 14:36:54,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:54,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:54,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:54,785 INFO L87 Difference]: Start difference. First operand 397 states and 1376 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:54,869 INFO L93 Difference]: Finished difference Result 683 states and 2018 transitions. [2021-03-11 14:36:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:54,871 INFO L225 Difference]: With dead ends: 683 [2021-03-11 14:36:54,871 INFO L226 Difference]: Without dead ends: 669 [2021-03-11 14:36:54,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-03-11 14:36:54,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 405. [2021-03-11 14:36:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.4405940594059405) internal successors, (1390), 404 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1390 transitions. [2021-03-11 14:36:54,877 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1390 transitions. Word has length 22 [2021-03-11 14:36:54,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:54,877 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 1390 transitions. [2021-03-11 14:36:54,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:54,877 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1390 transitions. [2021-03-11 14:36:54,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:54,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:54,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:54,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable526 [2021-03-11 14:36:54,878 INFO L428 AbstractCegarLoop]: === Iteration 528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2021646269, now seen corresponding path program 522 times [2021-03-11 14:36:54,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:54,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362358678] [2021-03-11 14:36:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:54,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:54,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:54,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:54,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:54,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:54,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:54,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:54,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:54,941 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:54,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:54,963 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:54,989 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:54,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362358678] [2021-03-11 14:36:55,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:55,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:55,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753600876] [2021-03-11 14:36:55,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:55,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:55,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:55,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:55,014 INFO L87 Difference]: Start difference. First operand 405 states and 1390 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:55,083 INFO L93 Difference]: Finished difference Result 685 states and 2015 transitions. [2021-03-11 14:36:55,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:55,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:55,085 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:36:55,085 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:55,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 392. [2021-03-11 14:36:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4859335038363173) internal successors, (1363), 391 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1363 transitions. [2021-03-11 14:36:55,091 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:55,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:55,091 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1363 transitions. [2021-03-11 14:36:55,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1363 transitions. [2021-03-11 14:36:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:55,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:55,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:55,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable527 [2021-03-11 14:36:55,092 INFO L428 AbstractCegarLoop]: === Iteration 529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1600562787, now seen corresponding path program 523 times [2021-03-11 14:36:55,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:55,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468224395] [2021-03-11 14:36:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:55,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:55,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:55,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:55,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:55,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:55,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:55,154 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:55,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:55,185 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:55,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:55,212 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:55,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:55,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468224395] [2021-03-11 14:36:55,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:55,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:55,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418272719] [2021-03-11 14:36:55,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:55,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:55,237 INFO L87 Difference]: Start difference. First operand 392 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:55,327 INFO L93 Difference]: Finished difference Result 663 states and 1975 transitions. [2021-03-11 14:36:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:55,328 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:36:55,328 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:36:55,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:36:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 398. [2021-03-11 14:36:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4710327455919394) internal successors, (1378), 397 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1378 transitions. [2021-03-11 14:36:55,335 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:55,335 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1378 transitions. [2021-03-11 14:36:55,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1378 transitions. [2021-03-11 14:36:55,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:55,336 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:55,336 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:55,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable528 [2021-03-11 14:36:55,336 INFO L428 AbstractCegarLoop]: === Iteration 530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:55,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:55,336 INFO L82 PathProgramCache]: Analyzing trace with hash -91616495, now seen corresponding path program 524 times [2021-03-11 14:36:55,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:55,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124081117] [2021-03-11 14:36:55,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:55,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:55,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:55,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:55,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:55,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:55,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:55,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:55,398 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:55,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:55,430 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:55,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:55,456 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:55,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:55,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:55,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124081117] [2021-03-11 14:36:55,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:55,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:55,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29976005] [2021-03-11 14:36:55,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:55,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:55,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:55,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:55,482 INFO L87 Difference]: Start difference. First operand 398 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:55,583 INFO L93 Difference]: Finished difference Result 667 states and 1981 transitions. [2021-03-11 14:36:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:55,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:55,584 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:36:55,584 INFO L226 Difference]: Without dead ends: 651 [2021-03-11 14:36:55,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:55,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-03-11 14:36:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 396. [2021-03-11 14:36:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4759493670886075) internal successors, (1373), 395 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1373 transitions. [2021-03-11 14:36:55,591 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1373 transitions. Word has length 22 [2021-03-11 14:36:55,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:55,591 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1373 transitions. [2021-03-11 14:36:55,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1373 transitions. [2021-03-11 14:36:55,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:55,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:55,592 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:55,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable529 [2021-03-11 14:36:55,592 INFO L428 AbstractCegarLoop]: === Iteration 531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:55,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:55,592 INFO L82 PathProgramCache]: Analyzing trace with hash 2135792589, now seen corresponding path program 525 times [2021-03-11 14:36:55,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:55,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810708550] [2021-03-11 14:36:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:55,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:55,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:55,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:55,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:55,630 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:55,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:55,658 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:55,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:55,688 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:55,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:55,714 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:55,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:55,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810708550] [2021-03-11 14:36:55,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:55,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:55,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250524310] [2021-03-11 14:36:55,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:55,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:55,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:55,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:55,740 INFO L87 Difference]: Start difference. First operand 396 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:55,835 INFO L93 Difference]: Finished difference Result 666 states and 1978 transitions. [2021-03-11 14:36:55,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:55,836 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:36:55,836 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:36:55,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:36:55,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 399. [2021-03-11 14:36:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4623115577889445) internal successors, (1378), 398 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1378 transitions. [2021-03-11 14:36:55,843 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:55,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:55,843 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1378 transitions. [2021-03-11 14:36:55,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1378 transitions. [2021-03-11 14:36:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:55,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:55,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:55,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable530 [2021-03-11 14:36:55,844 INFO L428 AbstractCegarLoop]: === Iteration 532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash -843017403, now seen corresponding path program 526 times [2021-03-11 14:36:55,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:55,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480043555] [2021-03-11 14:36:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:55,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:55,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:55,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:55,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:55,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:55,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:55,882 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:55,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:55,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:55,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:55,937 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:55,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:55,964 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:55,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480043555] [2021-03-11 14:36:55,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:55,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:55,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003400556] [2021-03-11 14:36:55,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:55,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:55,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:55,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:55,989 INFO L87 Difference]: Start difference. First operand 399 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:56,071 INFO L93 Difference]: Finished difference Result 672 states and 1987 transitions. [2021-03-11 14:36:56,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:56,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:56,072 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:36:56,072 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:36:56,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:36:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 396. [2021-03-11 14:36:56,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4683544303797467) internal successors, (1370), 395 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1370 transitions. [2021-03-11 14:36:56,079 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:56,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:56,079 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1370 transitions. [2021-03-11 14:36:56,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,079 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1370 transitions. [2021-03-11 14:36:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:56,080 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:56,080 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:56,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable531 [2021-03-11 14:36:56,080 INFO L428 AbstractCegarLoop]: === Iteration 533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:56,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2054554265, now seen corresponding path program 527 times [2021-03-11 14:36:56,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:56,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271184465] [2021-03-11 14:36:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:56,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:56,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:56,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:56,099 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:56,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:56,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:56,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:56,142 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:56,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:56,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:56,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:56,190 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:56,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:56,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:56,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271184465] [2021-03-11 14:36:56,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:56,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:56,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546489731] [2021-03-11 14:36:56,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:56,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:56,216 INFO L87 Difference]: Start difference. First operand 396 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:56,301 INFO L93 Difference]: Finished difference Result 679 states and 2004 transitions. [2021-03-11 14:36:56,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:56,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:56,303 INFO L225 Difference]: With dead ends: 679 [2021-03-11 14:36:56,303 INFO L226 Difference]: Without dead ends: 665 [2021-03-11 14:36:56,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-03-11 14:36:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 404. [2021-03-11 14:36:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.43424317617866) internal successors, (1384), 403 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1384 transitions. [2021-03-11 14:36:56,310 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1384 transitions. Word has length 22 [2021-03-11 14:36:56,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:56,310 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 1384 transitions. [2021-03-11 14:36:56,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1384 transitions. [2021-03-11 14:36:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:56,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:56,310 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:56,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable532 [2021-03-11 14:36:56,310 INFO L428 AbstractCegarLoop]: === Iteration 534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash 115551949, now seen corresponding path program 528 times [2021-03-11 14:36:56,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:56,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613472594] [2021-03-11 14:36:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:56,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:56,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:56,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:56,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:56,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:56,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:36:56,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:36:56,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:56,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:56,424 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:56,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:56,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613472594] [2021-03-11 14:36:56,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:56,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:56,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997302131] [2021-03-11 14:36:56,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:56,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:56,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:56,450 INFO L87 Difference]: Start difference. First operand 404 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:56,533 INFO L93 Difference]: Finished difference Result 681 states and 2001 transitions. [2021-03-11 14:36:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:56,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:56,534 INFO L225 Difference]: With dead ends: 681 [2021-03-11 14:36:56,534 INFO L226 Difference]: Without dead ends: 649 [2021-03-11 14:36:56,534 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-03-11 14:36:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 388. [2021-03-11 14:36:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4935400516795867) internal successors, (1352), 387 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1352 transitions. [2021-03-11 14:36:56,541 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1352 transitions. Word has length 22 [2021-03-11 14:36:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:56,541 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1352 transitions. [2021-03-11 14:36:56,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1352 transitions. [2021-03-11 14:36:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:56,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:56,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:56,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable533 [2021-03-11 14:36:56,542 INFO L428 AbstractCegarLoop]: === Iteration 535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1065777747, now seen corresponding path program 529 times [2021-03-11 14:36:56,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:56,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131787478] [2021-03-11 14:36:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:56,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:56,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:56,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:56,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:56,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:56,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:56,594 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:56,615 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:56,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:56,641 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:56,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:56,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131787478] [2021-03-11 14:36:56,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:56,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:56,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670914329] [2021-03-11 14:36:56,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:56,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:56,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:56,667 INFO L87 Difference]: Start difference. First operand 388 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:56,755 INFO L93 Difference]: Finished difference Result 641 states and 1933 transitions. [2021-03-11 14:36:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:56,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:56,756 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:36:56,756 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:36:56,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:56,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:36:56,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 395. [2021-03-11 14:36:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.489847715736041) internal successors, (1375), 394 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1375 transitions. [2021-03-11 14:36:56,763 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:56,763 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1375 transitions. [2021-03-11 14:36:56,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1375 transitions. [2021-03-11 14:36:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:56,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:56,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:56,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable534 [2021-03-11 14:36:56,764 INFO L428 AbstractCegarLoop]: === Iteration 536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash 563236195, now seen corresponding path program 530 times [2021-03-11 14:36:56,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:56,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591895667] [2021-03-11 14:36:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:56,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:56,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:56,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:56,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:56,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:56,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:56,813 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:56,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:56,838 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:56,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:56,865 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:56,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:56,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591895667] [2021-03-11 14:36:56,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:56,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:56,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809275349] [2021-03-11 14:36:56,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:56,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:56,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:56,891 INFO L87 Difference]: Start difference. First operand 395 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:56,978 INFO L93 Difference]: Finished difference Result 640 states and 1929 transitions. [2021-03-11 14:36:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:56,979 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:56,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:56,980 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:36:56,980 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:36:56,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:56,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:36:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 393. [2021-03-11 14:36:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4948979591836733) internal successors, (1370), 392 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1370 transitions. [2021-03-11 14:36:56,987 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1370 transitions. Word has length 22 [2021-03-11 14:36:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:56,987 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1370 transitions. [2021-03-11 14:36:56,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1370 transitions. [2021-03-11 14:36:56,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:56,987 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:56,987 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:56,987 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable535 [2021-03-11 14:36:56,987 INFO L428 AbstractCegarLoop]: === Iteration 537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:56,988 INFO L82 PathProgramCache]: Analyzing trace with hash 478032425, now seen corresponding path program 531 times [2021-03-11 14:36:56,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:56,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513326288] [2021-03-11 14:36:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:56,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:56,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:56,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:56,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:57,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:57,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:57,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:57,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:57,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:57,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:57,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:57,092 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:57,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:57,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513326288] [2021-03-11 14:36:57,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:57,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:57,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828311617] [2021-03-11 14:36:57,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:57,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:57,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:57,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:57,117 INFO L87 Difference]: Start difference. First operand 393 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:57,206 INFO L93 Difference]: Finished difference Result 645 states and 1940 transitions. [2021-03-11 14:36:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:57,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:57,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:57,207 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:57,207 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:36:57,208 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:57,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:36:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 396. [2021-03-11 14:36:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.481012658227848) internal successors, (1375), 395 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1375 transitions. [2021-03-11 14:36:57,214 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1375 transitions. Word has length 22 [2021-03-11 14:36:57,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:57,214 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1375 transitions. [2021-03-11 14:36:57,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1375 transitions. [2021-03-11 14:36:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:57,215 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:57,215 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:57,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable536 [2021-03-11 14:36:57,215 INFO L428 AbstractCegarLoop]: === Iteration 538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:57,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1635357023, now seen corresponding path program 532 times [2021-03-11 14:36:57,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:57,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883162188] [2021-03-11 14:36:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:57,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:57,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:57,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:57,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:57,245 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:57,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:57,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:57,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:57,281 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:57,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:57,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:57,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883162188] [2021-03-11 14:36:57,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:57,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:57,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261007759] [2021-03-11 14:36:57,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:57,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:57,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:57,333 INFO L87 Difference]: Start difference. First operand 396 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:57,435 INFO L93 Difference]: Finished difference Result 647 states and 1941 transitions. [2021-03-11 14:36:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:57,437 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:36:57,437 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:36:57,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:36:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 393. [2021-03-11 14:36:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.489795918367347) internal successors, (1368), 392 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1368 transitions. [2021-03-11 14:36:57,443 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:57,444 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1368 transitions. [2021-03-11 14:36:57,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1368 transitions. [2021-03-11 14:36:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:57,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:57,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:57,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable537 [2021-03-11 14:36:57,444 INFO L428 AbstractCegarLoop]: === Iteration 539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:57,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1643770401, now seen corresponding path program 533 times [2021-03-11 14:36:57,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:57,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957855348] [2021-03-11 14:36:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:57,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:57,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:57,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:57,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:57,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:57,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:57,490 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:57,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:57,525 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:57,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:57,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:57,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:57,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957855348] [2021-03-11 14:36:57,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:57,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:57,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040830737] [2021-03-11 14:36:57,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:57,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:57,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:57,577 INFO L87 Difference]: Start difference. First operand 393 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:57,664 INFO L93 Difference]: Finished difference Result 642 states and 1931 transitions. [2021-03-11 14:36:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:57,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:57,666 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:36:57,666 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:36:57,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:36:57,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 395. [2021-03-11 14:36:57,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.479695431472081) internal successors, (1371), 394 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1371 transitions. [2021-03-11 14:36:57,672 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:57,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:57,673 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1371 transitions. [2021-03-11 14:36:57,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1371 transitions. [2021-03-11 14:36:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:57,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:57,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:57,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable538 [2021-03-11 14:36:57,673 INFO L428 AbstractCegarLoop]: === Iteration 540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:57,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:57,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2079742089, now seen corresponding path program 534 times [2021-03-11 14:36:57,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:57,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091734977] [2021-03-11 14:36:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:57,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:57,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:57,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:57,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:57,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:57,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:57,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:36:57,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:36:57,754 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:57,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:57,781 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:57,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:57,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091734977] [2021-03-11 14:36:57,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:57,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:57,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048592534] [2021-03-11 14:36:57,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:57,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:57,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:57,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:57,806 INFO L87 Difference]: Start difference. First operand 395 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:57,894 INFO L93 Difference]: Finished difference Result 645 states and 1935 transitions. [2021-03-11 14:36:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:57,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:57,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:57,896 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:36:57,896 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:36:57,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:36:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 391. [2021-03-11 14:36:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.494871794871795) internal successors, (1363), 390 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1363 transitions. [2021-03-11 14:36:57,902 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1363 transitions. Word has length 22 [2021-03-11 14:36:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:57,903 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1363 transitions. [2021-03-11 14:36:57,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:57,903 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1363 transitions. [2021-03-11 14:36:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:57,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:57,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:57,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable539 [2021-03-11 14:36:57,903 INFO L428 AbstractCegarLoop]: === Iteration 541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:57,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:57,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1303155471, now seen corresponding path program 535 times [2021-03-11 14:36:57,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:57,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105057457] [2021-03-11 14:36:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:57,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:57,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:57,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:57,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:57,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:57,934 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:57,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:57,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:57,982 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:57,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:58,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:58,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:58,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105057457] [2021-03-11 14:36:58,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:58,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:58,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322568723] [2021-03-11 14:36:58,035 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:58,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:58,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:58,035 INFO L87 Difference]: Start difference. First operand 391 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:58,126 INFO L93 Difference]: Finished difference Result 647 states and 1943 transitions. [2021-03-11 14:36:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:58,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:58,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:58,127 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:36:58,127 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:36:58,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:58,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:36:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 396. [2021-03-11 14:36:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4835443037974683) internal successors, (1376), 395 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1376 transitions. [2021-03-11 14:36:58,134 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1376 transitions. Word has length 22 [2021-03-11 14:36:58,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:58,134 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1376 transitions. [2021-03-11 14:36:58,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,134 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1376 transitions. [2021-03-11 14:36:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:58,135 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:58,135 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:58,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable540 [2021-03-11 14:36:58,135 INFO L428 AbstractCegarLoop]: === Iteration 542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:58,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1805697023, now seen corresponding path program 536 times [2021-03-11 14:36:58,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:58,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672272623] [2021-03-11 14:36:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:58,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:58,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:58,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:58,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:58,166 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:58,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:58,191 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:36:58,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:36:58,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:58,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:58,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:58,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:58,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672272623] [2021-03-11 14:36:58,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:58,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:58,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203164359] [2021-03-11 14:36:58,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:58,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:58,268 INFO L87 Difference]: Start difference. First operand 396 states and 1376 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:58,374 INFO L93 Difference]: Finished difference Result 646 states and 1939 transitions. [2021-03-11 14:36:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:58,376 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:36:58,376 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:36:58,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:36:58,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 394. [2021-03-11 14:36:58,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4885496183206106) internal successors, (1371), 393 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1371 transitions. [2021-03-11 14:36:58,383 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:58,383 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1371 transitions. [2021-03-11 14:36:58,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,383 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1371 transitions. [2021-03-11 14:36:58,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:58,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:58,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:58,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable541 [2021-03-11 14:36:58,383 INFO L428 AbstractCegarLoop]: === Iteration 543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:58,384 INFO L82 PathProgramCache]: Analyzing trace with hash 803628649, now seen corresponding path program 537 times [2021-03-11 14:36:58,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:58,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398713694] [2021-03-11 14:36:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:58,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:58,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:58,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:58,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:58,414 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:58,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:58,438 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:58,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:58,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:58,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:58,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:58,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398713694] [2021-03-11 14:36:58,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:58,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644919199] [2021-03-11 14:36:58,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:58,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:58,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:58,523 INFO L87 Difference]: Start difference. First operand 394 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:58,613 INFO L93 Difference]: Finished difference Result 655 states and 1957 transitions. [2021-03-11 14:36:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:58,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:58,615 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:36:58,615 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:36:58,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:36:58,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 398. [2021-03-11 14:36:58,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4710327455919394) internal successors, (1378), 397 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1378 transitions. [2021-03-11 14:36:58,622 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:58,622 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1378 transitions. [2021-03-11 14:36:58,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1378 transitions. [2021-03-11 14:36:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:58,622 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:58,622 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:58,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable542 [2021-03-11 14:36:58,622 INFO L428 AbstractCegarLoop]: === Iteration 544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:58,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:58,623 INFO L82 PathProgramCache]: Analyzing trace with hash 876936061, now seen corresponding path program 538 times [2021-03-11 14:36:58,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:58,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007038411] [2021-03-11 14:36:58,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:58,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:58,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:58,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:58,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:58,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:58,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:58,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:58,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:58,710 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:58,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:58,737 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:58,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:58,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007038411] [2021-03-11 14:36:58,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:58,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:58,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898671590] [2021-03-11 14:36:58,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:58,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:58,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:58,763 INFO L87 Difference]: Start difference. First operand 398 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:58,836 INFO L93 Difference]: Finished difference Result 660 states and 1963 transitions. [2021-03-11 14:36:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:58,837 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:36:58,837 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:36:58,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:36:58,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 394. [2021-03-11 14:36:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.480916030534351) internal successors, (1368), 393 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1368 transitions. [2021-03-11 14:36:58,844 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1368 transitions. Word has length 22 [2021-03-11 14:36:58,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:58,844 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1368 transitions. [2021-03-11 14:36:58,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:58,844 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1368 transitions. [2021-03-11 14:36:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:58,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:58,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:58,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable543 [2021-03-11 14:36:58,844 INFO L428 AbstractCegarLoop]: === Iteration 545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:58,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -714659713, now seen corresponding path program 539 times [2021-03-11 14:36:58,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:58,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748515959] [2021-03-11 14:36:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:58,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:58,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:58,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:58,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:58,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:58,875 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:58,899 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:58,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:58,929 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:58,955 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:58,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748515959] [2021-03-11 14:36:58,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:58,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:58,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821128980] [2021-03-11 14:36:58,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:58,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:58,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:58,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:58,980 INFO L87 Difference]: Start difference. First operand 394 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:59,079 INFO L93 Difference]: Finished difference Result 652 states and 1947 transitions. [2021-03-11 14:36:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:59,080 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:36:59,080 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:36:59,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:59,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:36:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 397. [2021-03-11 14:36:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.467171717171717) internal successors, (1373), 396 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1373 transitions. [2021-03-11 14:36:59,087 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1373 transitions. Word has length 22 [2021-03-11 14:36:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:59,087 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1373 transitions. [2021-03-11 14:36:59,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1373 transitions. [2021-03-11 14:36:59,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:59,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:59,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:59,088 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable544 [2021-03-11 14:36:59,088 INFO L428 AbstractCegarLoop]: === Iteration 546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:59,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:59,088 INFO L82 PathProgramCache]: Analyzing trace with hash 601497591, now seen corresponding path program 540 times [2021-03-11 14:36:59,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:59,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950287018] [2021-03-11 14:36:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:59,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:59,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:59,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:59,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:59,121 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:59,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:59,145 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:59,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:59,176 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:36:59,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:36:59,203 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:59,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:59,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950287018] [2021-03-11 14:36:59,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:59,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:59,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884162848] [2021-03-11 14:36:59,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:59,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:59,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:59,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:59,229 INFO L87 Difference]: Start difference. First operand 397 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:59,316 INFO L93 Difference]: Finished difference Result 658 states and 1956 transitions. [2021-03-11 14:36:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:59,317 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:59,317 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:36:59,318 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:36:59,318 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:59,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:36:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 391. [2021-03-11 14:36:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:36:59,324 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:36:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:59,324 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:36:59,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:36:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:59,325 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:59,325 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:59,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable545 [2021-03-11 14:36:59,325 INFO L428 AbstractCegarLoop]: === Iteration 547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1363830705, now seen corresponding path program 541 times [2021-03-11 14:36:59,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:59,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548868960] [2021-03-11 14:36:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:59,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:59,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:59,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:59,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:59,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:59,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:59,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:59,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:59,391 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:59,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:59,417 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:59,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:59,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548868960] [2021-03-11 14:36:59,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:59,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:59,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644655898] [2021-03-11 14:36:59,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:59,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:59,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:59,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:59,443 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:59,529 INFO L93 Difference]: Finished difference Result 659 states and 1971 transitions. [2021-03-11 14:36:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:59,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:59,531 INFO L225 Difference]: With dead ends: 659 [2021-03-11 14:36:59,531 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:36:59,531 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 144.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:59,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:36:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 398. [2021-03-11 14:36:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.473551637279597) internal successors, (1379), 397 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1379 transitions. [2021-03-11 14:36:59,538 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1379 transitions. Word has length 22 [2021-03-11 14:36:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:59,538 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1379 transitions. [2021-03-11 14:36:59,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,538 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1379 transitions. [2021-03-11 14:36:59,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:59,538 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:59,538 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:59,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable546 [2021-03-11 14:36:59,538 INFO L428 AbstractCegarLoop]: === Iteration 548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:59,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1773811993, now seen corresponding path program 542 times [2021-03-11 14:36:59,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:59,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491382109] [2021-03-11 14:36:59,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:59,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:59,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:59,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:59,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:59,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:59,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:59,585 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:36:59,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:36:59,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:59,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:59,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:59,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:59,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491382109] [2021-03-11 14:36:59,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:59,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:59,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534830115] [2021-03-11 14:36:59,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:59,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:59,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:59,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:59,657 INFO L87 Difference]: Start difference. First operand 398 states and 1379 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:59,744 INFO L93 Difference]: Finished difference Result 661 states and 1972 transitions. [2021-03-11 14:36:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:59,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:59,745 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:36:59,745 INFO L226 Difference]: Without dead ends: 645 [2021-03-11 14:36:59,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:59,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-03-11 14:36:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 395. [2021-03-11 14:36:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.479695431472081) internal successors, (1371), 394 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1371 transitions. [2021-03-11 14:36:59,752 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1371 transitions. Word has length 22 [2021-03-11 14:36:59,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:59,752 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1371 transitions. [2021-03-11 14:36:59,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1371 transitions. [2021-03-11 14:36:59,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:59,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:59,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:59,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable547 [2021-03-11 14:36:59,753 INFO L428 AbstractCegarLoop]: === Iteration 549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:59,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:59,753 INFO L82 PathProgramCache]: Analyzing trace with hash -236607149, now seen corresponding path program 543 times [2021-03-11 14:36:59,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:59,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127972706] [2021-03-11 14:36:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:59,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:59,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:59,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:59,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:36:59,783 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:36:59,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:36:59,799 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:36:59,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:36:59,831 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:36:59,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:36:59,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:36:59,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:36:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:36:59,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127972706] [2021-03-11 14:36:59,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:36:59,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:36:59,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072640634] [2021-03-11 14:36:59,882 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:36:59,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:36:59,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:36:59,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:36:59,883 INFO L87 Difference]: Start difference. First operand 395 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:36:59,968 INFO L93 Difference]: Finished difference Result 663 states and 1975 transitions. [2021-03-11 14:36:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:36:59,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:36:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:36:59,970 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:36:59,970 INFO L226 Difference]: Without dead ends: 652 [2021-03-11 14:36:59,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:36:59,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-03-11 14:36:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 399. [2021-03-11 14:36:59,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4623115577889445) internal successors, (1378), 398 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1378 transitions. [2021-03-11 14:36:59,977 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1378 transitions. Word has length 22 [2021-03-11 14:36:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:36:59,977 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1378 transitions. [2021-03-11 14:36:59,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:36:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1378 transitions. [2021-03-11 14:36:59,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:36:59,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:36:59,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:36:59,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable548 [2021-03-11 14:36:59,977 INFO L428 AbstractCegarLoop]: === Iteration 550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:36:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:36:59,978 INFO L82 PathProgramCache]: Analyzing trace with hash -163299737, now seen corresponding path program 544 times [2021-03-11 14:36:59,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:36:59,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650335861] [2021-03-11 14:36:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:36:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:36:59,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:36:59,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:36:59,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:36:59,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:36:59,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:00,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:00,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:00,023 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:00,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:00,056 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:00,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:00,083 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:00,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650335861] [2021-03-11 14:37:00,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:00,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:00,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968714183] [2021-03-11 14:37:00,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:00,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:00,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:00,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:00,108 INFO L87 Difference]: Start difference. First operand 399 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:00,179 INFO L93 Difference]: Finished difference Result 668 states and 1981 transitions. [2021-03-11 14:37:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:00,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:00,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:00,181 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:37:00,181 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:37:00,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:00,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:37:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 395. [2021-03-11 14:37:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.469543147208122) internal successors, (1367), 394 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1367 transitions. [2021-03-11 14:37:00,187 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:00,187 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1367 transitions. [2021-03-11 14:37:00,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,187 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1367 transitions. [2021-03-11 14:37:00,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:00,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:00,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:00,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable549 [2021-03-11 14:37:00,188 INFO L428 AbstractCegarLoop]: === Iteration 551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:00,188 INFO L82 PathProgramCache]: Analyzing trace with hash 498717779, now seen corresponding path program 545 times [2021-03-11 14:37:00,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:00,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995196684] [2021-03-11 14:37:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:00,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:00,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:00,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:00,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:00,217 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:00,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:00,233 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:00,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:00,262 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:00,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:00,287 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:00,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:00,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995196684] [2021-03-11 14:37:00,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:00,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:00,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424705445] [2021-03-11 14:37:00,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:00,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:00,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:00,313 INFO L87 Difference]: Start difference. First operand 395 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:00,402 INFO L93 Difference]: Finished difference Result 669 states and 1985 transitions. [2021-03-11 14:37:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:00,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:00,403 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:37:00,403 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:37:00,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:00,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:37:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 401. [2021-03-11 14:37:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.445) internal successors, (1378), 400 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1378 transitions. [2021-03-11 14:37:00,410 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1378 transitions. Word has length 22 [2021-03-11 14:37:00,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:00,410 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1378 transitions. [2021-03-11 14:37:00,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,410 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1378 transitions. [2021-03-11 14:37:00,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:00,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:00,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:00,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable550 [2021-03-11 14:37:00,411 INFO L428 AbstractCegarLoop]: === Iteration 552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:00,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1354024433, now seen corresponding path program 546 times [2021-03-11 14:37:00,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:00,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899751141] [2021-03-11 14:37:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:00,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:00,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:00,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:00,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:00,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:00,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:00,457 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:00,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:00,478 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:00,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:00,506 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:00,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:00,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899751141] [2021-03-11 14:37:00,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:00,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:00,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281784478] [2021-03-11 14:37:00,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:00,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:00,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:00,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:00,531 INFO L87 Difference]: Start difference. First operand 401 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:00,598 INFO L93 Difference]: Finished difference Result 672 states and 1985 transitions. [2021-03-11 14:37:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:00,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:00,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:00,600 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:37:00,600 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:37:00,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 128.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:00,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:37:00,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 391. [2021-03-11 14:37:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4794871794871796) internal successors, (1357), 390 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1357 transitions. [2021-03-11 14:37:00,607 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1357 transitions. Word has length 22 [2021-03-11 14:37:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:00,607 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1357 transitions. [2021-03-11 14:37:00,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1357 transitions. [2021-03-11 14:37:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:00,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:00,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:00,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable551 [2021-03-11 14:37:00,607 INFO L428 AbstractCegarLoop]: === Iteration 553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1106188643, now seen corresponding path program 547 times [2021-03-11 14:37:00,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:00,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251200135] [2021-03-11 14:37:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:00,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:00,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:00,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:00,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:00,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:00,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:00,665 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:00,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:00,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:00,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:00,728 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:00,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:00,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251200135] [2021-03-11 14:37:00,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:00,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:00,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841862217] [2021-03-11 14:37:00,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:00,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:00,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:00,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:00,754 INFO L87 Difference]: Start difference. First operand 391 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:00,840 INFO L93 Difference]: Finished difference Result 652 states and 1949 transitions. [2021-03-11 14:37:00,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:00,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:00,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:00,842 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:37:00,842 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:37:00,842 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:00,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:37:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 396. [2021-03-11 14:37:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4683544303797467) internal successors, (1370), 395 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1370 transitions. [2021-03-11 14:37:00,849 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1370 transitions. Word has length 22 [2021-03-11 14:37:00,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:00,849 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1370 transitions. [2021-03-11 14:37:00,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1370 transitions. [2021-03-11 14:37:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:00,849 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:00,849 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:00,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable552 [2021-03-11 14:37:00,849 INFO L428 AbstractCegarLoop]: === Iteration 554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:00,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1677643449, now seen corresponding path program 548 times [2021-03-11 14:37:00,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:00,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493988394] [2021-03-11 14:37:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:00,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:00,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:00,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:00,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:00,882 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:00,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:00,909 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:00,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:00,944 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:00,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:00,970 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:00,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:00,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493988394] [2021-03-11 14:37:00,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:00,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:00,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237433357] [2021-03-11 14:37:00,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:00,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:00,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:00,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:00,996 INFO L87 Difference]: Start difference. First operand 396 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:01,075 INFO L93 Difference]: Finished difference Result 655 states and 1953 transitions. [2021-03-11 14:37:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:01,077 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:37:01,077 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:37:01,077 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:01,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:37:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 394. [2021-03-11 14:37:01,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4732824427480917) internal successors, (1365), 393 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1365 transitions. [2021-03-11 14:37:01,083 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:01,083 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1365 transitions. [2021-03-11 14:37:01,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1365 transitions. [2021-03-11 14:37:01,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:01,084 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:01,084 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:01,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable553 [2021-03-11 14:37:01,084 INFO L428 AbstractCegarLoop]: === Iteration 555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1577837695, now seen corresponding path program 549 times [2021-03-11 14:37:01,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:01,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817472377] [2021-03-11 14:37:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:01,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:01,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:01,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:01,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:01,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:01,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:01,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:01,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:01,172 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:01,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:01,199 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:01,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:01,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817472377] [2021-03-11 14:37:01,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:01,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:01,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065989309] [2021-03-11 14:37:01,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:01,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:01,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:01,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:01,224 INFO L87 Difference]: Start difference. First operand 394 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:01,303 INFO L93 Difference]: Finished difference Result 656 states and 1954 transitions. [2021-03-11 14:37:01,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:01,304 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:37:01,304 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:37:01,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:37:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 397. [2021-03-11 14:37:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.45959595959596) internal successors, (1370), 396 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1370 transitions. [2021-03-11 14:37:01,311 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1370 transitions. Word has length 22 [2021-03-11 14:37:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:01,311 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1370 transitions. [2021-03-11 14:37:01,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1370 transitions. [2021-03-11 14:37:01,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:01,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:01,311 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:01,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable554 [2021-03-11 14:37:01,312 INFO L428 AbstractCegarLoop]: === Iteration 556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash -261680391, now seen corresponding path program 550 times [2021-03-11 14:37:01,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:01,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554455648] [2021-03-11 14:37:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:01,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:01,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:01,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:01,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:01,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:01,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:01,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:01,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:01,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:01,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:01,440 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:01,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:01,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554455648] [2021-03-11 14:37:01,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:01,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:01,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157142412] [2021-03-11 14:37:01,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:01,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:01,465 INFO L87 Difference]: Start difference. First operand 397 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:01,531 INFO L93 Difference]: Finished difference Result 662 states and 1963 transitions. [2021-03-11 14:37:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:01,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:01,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:01,532 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:37:01,533 INFO L226 Difference]: Without dead ends: 643 [2021-03-11 14:37:01,533 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:01,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-03-11 14:37:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 394. [2021-03-11 14:37:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4656488549618323) internal successors, (1362), 393 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1362 transitions. [2021-03-11 14:37:01,539 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:01,539 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1362 transitions. [2021-03-11 14:37:01,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1362 transitions. [2021-03-11 14:37:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:01,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:01,540 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:01,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable555 [2021-03-11 14:37:01,540 INFO L428 AbstractCegarLoop]: === Iteration 557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:01,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:01,540 INFO L82 PathProgramCache]: Analyzing trace with hash -471153087, now seen corresponding path program 551 times [2021-03-11 14:37:01,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:01,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126989834] [2021-03-11 14:37:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:01,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:01,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:01,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:01,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:01,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:01,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:01,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:01,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:01,619 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:01,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:01,646 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:01,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:01,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126989834] [2021-03-11 14:37:01,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:01,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:01,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412171718] [2021-03-11 14:37:01,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:01,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:01,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:01,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:01,672 INFO L87 Difference]: Start difference. First operand 394 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:01,753 INFO L93 Difference]: Finished difference Result 665 states and 1972 transitions. [2021-03-11 14:37:01,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:01,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:01,754 INFO L225 Difference]: With dead ends: 665 [2021-03-11 14:37:01,754 INFO L226 Difference]: Without dead ends: 652 [2021-03-11 14:37:01,754 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-03-11 14:37:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 400. [2021-03-11 14:37:01,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4411027568922306) internal successors, (1373), 399 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1373 transitions. [2021-03-11 14:37:01,761 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:01,761 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1373 transitions. [2021-03-11 14:37:01,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1373 transitions. [2021-03-11 14:37:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:01,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:01,762 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:01,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable556 [2021-03-11 14:37:01,762 INFO L428 AbstractCegarLoop]: === Iteration 558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:01,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:01,762 INFO L82 PathProgramCache]: Analyzing trace with hash 273549411, now seen corresponding path program 552 times [2021-03-11 14:37:01,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:01,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184982116] [2021-03-11 14:37:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:01,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:01,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:01,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:01,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:37:01,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:01,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:01,819 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:01,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:01,840 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:01,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:01,868 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:01,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:01,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184982116] [2021-03-11 14:37:01,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:01,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:01,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761231698] [2021-03-11 14:37:01,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:01,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:01,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:01,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:01,893 INFO L87 Difference]: Start difference. First operand 400 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:01,958 INFO L93 Difference]: Finished difference Result 668 states and 1972 transitions. [2021-03-11 14:37:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:01,960 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:37:01,960 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:37:01,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:37:01,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 388. [2021-03-11 14:37:01,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4857881136950906) internal successors, (1349), 387 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1349 transitions. [2021-03-11 14:37:01,967 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1349 transitions. Word has length 22 [2021-03-11 14:37:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:01,967 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1349 transitions. [2021-03-11 14:37:01,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1349 transitions. [2021-03-11 14:37:01,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:01,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:01,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:01,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable557 [2021-03-11 14:37:01,967 INFO L428 AbstractCegarLoop]: === Iteration 559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:01,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:01,967 INFO L82 PathProgramCache]: Analyzing trace with hash 968888245, now seen corresponding path program 553 times [2021-03-11 14:37:01,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:01,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094286118] [2021-03-11 14:37:01,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:01,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:01,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:01,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:01,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:01,987 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:01,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:01,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:01,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:02,014 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:02,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:02,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:02,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:02,074 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:02,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:02,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094286118] [2021-03-11 14:37:02,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:02,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:02,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277496276] [2021-03-11 14:37:02,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:02,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:02,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:02,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:02,099 INFO L87 Difference]: Start difference. First operand 388 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:02,183 INFO L93 Difference]: Finished difference Result 679 states and 2033 transitions. [2021-03-11 14:37:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:02,184 INFO L225 Difference]: With dead ends: 679 [2021-03-11 14:37:02,184 INFO L226 Difference]: Without dead ends: 668 [2021-03-11 14:37:02,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:02,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-11 14:37:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 400. [2021-03-11 14:37:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4786967418546366) internal successors, (1388), 399 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1388 transitions. [2021-03-11 14:37:02,191 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1388 transitions. Word has length 22 [2021-03-11 14:37:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:02,191 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1388 transitions. [2021-03-11 14:37:02,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1388 transitions. [2021-03-11 14:37:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:02,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:02,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:02,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable558 [2021-03-11 14:37:02,192 INFO L428 AbstractCegarLoop]: === Iteration 560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:02,192 INFO L82 PathProgramCache]: Analyzing trace with hash -82922977, now seen corresponding path program 554 times [2021-03-11 14:37:02,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:02,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577290680] [2021-03-11 14:37:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:02,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:02,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:02,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:02,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:02,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:02,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:02,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:02,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:02,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:02,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:02,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:02,299 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:02,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:02,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577290680] [2021-03-11 14:37:02,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:02,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:02,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43042698] [2021-03-11 14:37:02,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:02,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:02,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:02,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:02,324 INFO L87 Difference]: Start difference. First operand 400 states and 1388 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:02,404 INFO L93 Difference]: Finished difference Result 682 states and 2036 transitions. [2021-03-11 14:37:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:02,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:02,406 INFO L225 Difference]: With dead ends: 682 [2021-03-11 14:37:02,406 INFO L226 Difference]: Without dead ends: 665 [2021-03-11 14:37:02,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:02,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-03-11 14:37:02,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 397. [2021-03-11 14:37:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.484848484848485) internal successors, (1380), 396 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1380 transitions. [2021-03-11 14:37:02,412 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1380 transitions. Word has length 22 [2021-03-11 14:37:02,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:02,412 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1380 transitions. [2021-03-11 14:37:02,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1380 transitions. [2021-03-11 14:37:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:02,413 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:02,413 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:02,413 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable559 [2021-03-11 14:37:02,413 INFO L428 AbstractCegarLoop]: === Iteration 561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:02,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1981580777, now seen corresponding path program 555 times [2021-03-11 14:37:02,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:02,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787670948] [2021-03-11 14:37:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:02,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:02,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:02,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:02,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:02,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:02,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:02,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:02,460 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:02,480 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:02,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:02,506 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:02,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:02,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787670948] [2021-03-11 14:37:02,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:02,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:02,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21256483] [2021-03-11 14:37:02,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:02,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:02,536 INFO L87 Difference]: Start difference. First operand 397 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:02,615 INFO L93 Difference]: Finished difference Result 678 states and 2028 transitions. [2021-03-11 14:37:02,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:02,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:02,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:02,617 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:37:02,617 INFO L226 Difference]: Without dead ends: 667 [2021-03-11 14:37:02,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2021-03-11 14:37:02,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 400. [2021-03-11 14:37:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4711779448621556) internal successors, (1385), 399 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1385 transitions. [2021-03-11 14:37:02,624 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1385 transitions. Word has length 22 [2021-03-11 14:37:02,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:02,624 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1385 transitions. [2021-03-11 14:37:02,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1385 transitions. [2021-03-11 14:37:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:02,624 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:02,624 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:02,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable560 [2021-03-11 14:37:02,624 INFO L428 AbstractCegarLoop]: === Iteration 562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:02,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1156061921, now seen corresponding path program 556 times [2021-03-11 14:37:02,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:02,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152929646] [2021-03-11 14:37:02,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:02,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:02,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:02,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:02,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:02,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:02,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:02,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:02,671 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:02,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:02,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:02,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:02,720 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:02,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:02,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152929646] [2021-03-11 14:37:02,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:02,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:02,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759997637] [2021-03-11 14:37:02,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:02,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:02,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:02,746 INFO L87 Difference]: Start difference. First operand 400 states and 1385 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:02,831 INFO L93 Difference]: Finished difference Result 680 states and 2029 transitions. [2021-03-11 14:37:02,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:02,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:02,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:02,832 INFO L225 Difference]: With dead ends: 680 [2021-03-11 14:37:02,832 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:37:02,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:02,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:37:02,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 397. [2021-03-11 14:37:02,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.477272727272727) internal successors, (1377), 396 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1377 transitions. [2021-03-11 14:37:02,839 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1377 transitions. Word has length 22 [2021-03-11 14:37:02,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:02,839 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1377 transitions. [2021-03-11 14:37:02,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:02,839 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1377 transitions. [2021-03-11 14:37:02,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:02,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:02,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:02,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable561 [2021-03-11 14:37:02,840 INFO L428 AbstractCegarLoop]: === Iteration 563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:02,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:02,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1434401193, now seen corresponding path program 557 times [2021-03-11 14:37:02,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:02,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432906594] [2021-03-11 14:37:02,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:02,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:02,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:02,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:02,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:02,860 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:02,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:02,872 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:02,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:02,888 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:02,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:02,911 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:02,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:02,938 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:02,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:02,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:02,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432906594] [2021-03-11 14:37:02,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:02,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:02,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363266380] [2021-03-11 14:37:02,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:02,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:02,965 INFO L87 Difference]: Start difference. First operand 397 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:03,050 INFO L93 Difference]: Finished difference Result 686 states and 2043 transitions. [2021-03-11 14:37:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:03,052 INFO L225 Difference]: With dead ends: 686 [2021-03-11 14:37:03,052 INFO L226 Difference]: Without dead ends: 672 [2021-03-11 14:37:03,052 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:03,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-03-11 14:37:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 402. [2021-03-11 14:37:03,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.456359102244389) internal successors, (1386), 401 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1386 transitions. [2021-03-11 14:37:03,058 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1386 transitions. Word has length 22 [2021-03-11 14:37:03,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:03,058 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1386 transitions. [2021-03-11 14:37:03,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,059 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1386 transitions. [2021-03-11 14:37:03,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:03,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:03,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:03,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable562 [2021-03-11 14:37:03,059 INFO L428 AbstractCegarLoop]: === Iteration 564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash 597528565, now seen corresponding path program 558 times [2021-03-11 14:37:03,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:03,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320480912] [2021-03-11 14:37:03,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:03,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:03,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:03,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:03,078 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:03,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:03,090 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:03,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:03,106 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:03,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:03,126 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:03,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:03,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:03,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:03,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320480912] [2021-03-11 14:37:03,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:03,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:03,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507478677] [2021-03-11 14:37:03,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:03,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:03,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:03,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:03,178 INFO L87 Difference]: Start difference. First operand 402 states and 1386 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:03,262 INFO L93 Difference]: Finished difference Result 685 states and 2036 transitions. [2021-03-11 14:37:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:03,263 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:37:03,264 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:37:03,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 145.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:37:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 394. [2021-03-11 14:37:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4834605597964376) internal successors, (1369), 393 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1369 transitions. [2021-03-11 14:37:03,270 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:03,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:03,270 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1369 transitions. [2021-03-11 14:37:03,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1369 transitions. [2021-03-11 14:37:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:03,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:03,271 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:03,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable563 [2021-03-11 14:37:03,271 INFO L428 AbstractCegarLoop]: === Iteration 565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:03,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1400044973, now seen corresponding path program 559 times [2021-03-11 14:37:03,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:03,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184781391] [2021-03-11 14:37:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:03,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:03,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:03,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:03,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:03,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:03,302 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:03,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:03,334 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:03,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:03,373 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:03,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:03,402 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:03,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:03,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184781391] [2021-03-11 14:37:03,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:03,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:03,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674556692] [2021-03-11 14:37:03,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:03,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:03,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:03,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:03,431 INFO L87 Difference]: Start difference. First operand 394 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:03,524 INFO L93 Difference]: Finished difference Result 688 states and 2048 transitions. [2021-03-11 14:37:03,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:03,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:03,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:03,525 INFO L225 Difference]: With dead ends: 688 [2021-03-11 14:37:03,525 INFO L226 Difference]: Without dead ends: 677 [2021-03-11 14:37:03,526 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:03,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-03-11 14:37:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 402. [2021-03-11 14:37:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.466334164588529) internal successors, (1390), 401 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1390 transitions. [2021-03-11 14:37:03,535 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1390 transitions. Word has length 22 [2021-03-11 14:37:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:03,535 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1390 transitions. [2021-03-11 14:37:03,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,535 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1390 transitions. [2021-03-11 14:37:03,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:03,535 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:03,535 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:03,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable564 [2021-03-11 14:37:03,535 INFO L428 AbstractCegarLoop]: === Iteration 566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:03,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1843111101, now seen corresponding path program 560 times [2021-03-11 14:37:03,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:03,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231949044] [2021-03-11 14:37:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:03,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:03,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:03,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:03,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:03,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:03,572 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:03,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:03,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:03,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:03,634 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:03,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:03,661 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:03,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:03,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231949044] [2021-03-11 14:37:03,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:03,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:03,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237165812] [2021-03-11 14:37:03,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:03,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:03,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:03,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:03,687 INFO L87 Difference]: Start difference. First operand 402 states and 1390 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:03,776 INFO L93 Difference]: Finished difference Result 691 states and 2051 transitions. [2021-03-11 14:37:03,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:03,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:03,777 INFO L225 Difference]: With dead ends: 691 [2021-03-11 14:37:03,777 INFO L226 Difference]: Without dead ends: 674 [2021-03-11 14:37:03,777 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:03,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-03-11 14:37:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 399. [2021-03-11 14:37:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.472361809045226) internal successors, (1382), 398 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1382 transitions. [2021-03-11 14:37:03,784 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1382 transitions. Word has length 22 [2021-03-11 14:37:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:03,784 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1382 transitions. [2021-03-11 14:37:03,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1382 transitions. [2021-03-11 14:37:03,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:03,784 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:03,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:03,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable565 [2021-03-11 14:37:03,785 INFO L428 AbstractCegarLoop]: === Iteration 567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1987790295, now seen corresponding path program 561 times [2021-03-11 14:37:03,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:03,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286541768] [2021-03-11 14:37:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:03,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:03,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:03,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:03,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:03,806 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:03,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:03,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:03,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:03,844 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:03,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:03,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:03,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:03,905 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:03,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:03,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286541768] [2021-03-11 14:37:03,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:03,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:03,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898476458] [2021-03-11 14:37:03,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:03,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:03,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:03,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:03,931 INFO L87 Difference]: Start difference. First operand 399 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:04,012 INFO L93 Difference]: Finished difference Result 691 states and 2050 transitions. [2021-03-11 14:37:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:04,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:04,014 INFO L225 Difference]: With dead ends: 691 [2021-03-11 14:37:04,014 INFO L226 Difference]: Without dead ends: 680 [2021-03-11 14:37:04,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:04,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-03-11 14:37:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 403. [2021-03-11 14:37:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.455223880597015) internal successors, (1389), 402 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1389 transitions. [2021-03-11 14:37:04,020 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1389 transitions. Word has length 22 [2021-03-11 14:37:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:04,020 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 1389 transitions. [2021-03-11 14:37:04,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1389 transitions. [2021-03-11 14:37:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:04,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:04,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:04,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable566 [2021-03-11 14:37:04,021 INFO L428 AbstractCegarLoop]: === Iteration 568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1914482883, now seen corresponding path program 562 times [2021-03-11 14:37:04,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:04,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282836708] [2021-03-11 14:37:04,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:04,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:04,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:04,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:04,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:04,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:04,052 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:04,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:04,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:04,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:04,116 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:04,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:04,144 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:04,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:04,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282836708] [2021-03-11 14:37:04,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:04,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:04,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752077046] [2021-03-11 14:37:04,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:04,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:04,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:04,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:04,170 INFO L87 Difference]: Start difference. First operand 403 states and 1389 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:04,239 INFO L93 Difference]: Finished difference Result 696 states and 2056 transitions. [2021-03-11 14:37:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:04,241 INFO L225 Difference]: With dead ends: 696 [2021-03-11 14:37:04,241 INFO L226 Difference]: Without dead ends: 676 [2021-03-11 14:37:04,241 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-03-11 14:37:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 399. [2021-03-11 14:37:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4623115577889445) internal successors, (1378), 398 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1378 transitions. [2021-03-11 14:37:04,248 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1378 transitions. Word has length 22 [2021-03-11 14:37:04,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:04,248 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1378 transitions. [2021-03-11 14:37:04,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,248 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1378 transitions. [2021-03-11 14:37:04,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:04,248 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:04,248 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:04,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567 [2021-03-11 14:37:04,248 INFO L428 AbstractCegarLoop]: === Iteration 569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:04,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:04,249 INFO L82 PathProgramCache]: Analyzing trace with hash -179326423, now seen corresponding path program 563 times [2021-03-11 14:37:04,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:04,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575805648] [2021-03-11 14:37:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:04,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:04,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:04,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:04,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:04,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:04,279 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:04,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:04,307 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:04,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:04,328 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:04,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:04,355 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:04,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:04,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575805648] [2021-03-11 14:37:04,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:04,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:04,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777107547] [2021-03-11 14:37:04,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:04,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:04,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:04,381 INFO L87 Difference]: Start difference. First operand 399 states and 1378 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:04,464 INFO L93 Difference]: Finished difference Result 701 states and 2068 transitions. [2021-03-11 14:37:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:04,465 INFO L225 Difference]: With dead ends: 701 [2021-03-11 14:37:04,465 INFO L226 Difference]: Without dead ends: 687 [2021-03-11 14:37:04,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:04,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-03-11 14:37:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 407. [2021-03-11 14:37:04,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.4285714285714284) internal successors, (1392), 406 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1392 transitions. [2021-03-11 14:37:04,472 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1392 transitions. Word has length 22 [2021-03-11 14:37:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:04,472 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1392 transitions. [2021-03-11 14:37:04,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1392 transitions. [2021-03-11 14:37:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:04,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:04,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:04,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568 [2021-03-11 14:37:04,473 INFO L428 AbstractCegarLoop]: === Iteration 570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash -160892397, now seen corresponding path program 564 times [2021-03-11 14:37:04,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:04,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755292757] [2021-03-11 14:37:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:04,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:04,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:04,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:04,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:04,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:04,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:04,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:04,531 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:04,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:04,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:04,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:04,580 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:04,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:04,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755292757] [2021-03-11 14:37:04,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:04,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:04,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267376031] [2021-03-11 14:37:04,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:04,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:04,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:04,606 INFO L87 Difference]: Start difference. First operand 407 states and 1392 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:04,680 INFO L93 Difference]: Finished difference Result 703 states and 2065 transitions. [2021-03-11 14:37:04,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:04,680 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:04,681 INFO L225 Difference]: With dead ends: 703 [2021-03-11 14:37:04,681 INFO L226 Difference]: Without dead ends: 674 [2021-03-11 14:37:04,681 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-03-11 14:37:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 394. [2021-03-11 14:37:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4707379134860052) internal successors, (1364), 393 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1364 transitions. [2021-03-11 14:37:04,688 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:04,688 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1364 transitions. [2021-03-11 14:37:04,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,688 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1364 transitions. [2021-03-11 14:37:04,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:04,688 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:04,688 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:04,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable569 [2021-03-11 14:37:04,689 INFO L428 AbstractCegarLoop]: === Iteration 571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:04,689 INFO L82 PathProgramCache]: Analyzing trace with hash 941344979, now seen corresponding path program 565 times [2021-03-11 14:37:04,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:04,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460923984] [2021-03-11 14:37:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:04,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:04,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:04,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:04,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:04,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:04,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:04,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:04,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:04,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:04,756 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:04,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:04,783 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:04,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:04,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460923984] [2021-03-11 14:37:04,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:04,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586772030] [2021-03-11 14:37:04,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:04,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:04,809 INFO L87 Difference]: Start difference. First operand 394 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:04,897 INFO L93 Difference]: Finished difference Result 683 states and 2033 transitions. [2021-03-11 14:37:04,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:04,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:04,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:04,899 INFO L225 Difference]: With dead ends: 683 [2021-03-11 14:37:04,899 INFO L226 Difference]: Without dead ends: 672 [2021-03-11 14:37:04,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:04,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-03-11 14:37:04,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 401. [2021-03-11 14:37:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.4575) internal successors, (1383), 400 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1383 transitions. [2021-03-11 14:37:04,905 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1383 transitions. Word has length 22 [2021-03-11 14:37:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:04,905 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1383 transitions. [2021-03-11 14:37:04,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1383 transitions. [2021-03-11 14:37:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:04,906 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:04,906 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:04,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570 [2021-03-11 14:37:04,906 INFO L428 AbstractCegarLoop]: === Iteration 572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:04,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2098669577, now seen corresponding path program 566 times [2021-03-11 14:37:04,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:04,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412107363] [2021-03-11 14:37:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:04,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:04,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:04,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:04,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:04,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:04,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:04,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:04,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:04,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:04,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:04,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:04,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:05,000 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:05,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:05,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:05,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412107363] [2021-03-11 14:37:05,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:05,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:05,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834544092] [2021-03-11 14:37:05,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:05,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:05,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:05,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:05,026 INFO L87 Difference]: Start difference. First operand 401 states and 1383 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:05,108 INFO L93 Difference]: Finished difference Result 685 states and 2034 transitions. [2021-03-11 14:37:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:05,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:05,110 INFO L225 Difference]: With dead ends: 685 [2021-03-11 14:37:05,110 INFO L226 Difference]: Without dead ends: 669 [2021-03-11 14:37:05,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-03-11 14:37:05,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 398. [2021-03-11 14:37:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.463476070528967) internal successors, (1375), 397 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1375 transitions. [2021-03-11 14:37:05,116 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1375 transitions. Word has length 22 [2021-03-11 14:37:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:05,116 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1375 transitions. [2021-03-11 14:37:05,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1375 transitions. [2021-03-11 14:37:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:05,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:05,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:05,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571 [2021-03-11 14:37:05,117 INFO L428 AbstractCegarLoop]: === Iteration 573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:05,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash -659092875, now seen corresponding path program 567 times [2021-03-11 14:37:05,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:05,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225257941] [2021-03-11 14:37:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:05,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:05,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:05,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:05,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:05,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:05,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:05,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:05,164 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:05,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:05,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:05,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:05,223 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:05,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:05,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225257941] [2021-03-11 14:37:05,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:05,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:05,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114843292] [2021-03-11 14:37:05,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:05,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:05,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:05,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:05,249 INFO L87 Difference]: Start difference. First operand 398 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:05,335 INFO L93 Difference]: Finished difference Result 687 states and 2037 transitions. [2021-03-11 14:37:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:05,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:05,336 INFO L225 Difference]: With dead ends: 687 [2021-03-11 14:37:05,336 INFO L226 Difference]: Without dead ends: 676 [2021-03-11 14:37:05,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:05,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-03-11 14:37:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 402. [2021-03-11 14:37:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4463840399002494) internal successors, (1382), 401 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1382 transitions. [2021-03-11 14:37:05,343 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1382 transitions. Word has length 22 [2021-03-11 14:37:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:05,343 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1382 transitions. [2021-03-11 14:37:05,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1382 transitions. [2021-03-11 14:37:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:05,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:05,344 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:05,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572 [2021-03-11 14:37:05,344 INFO L428 AbstractCegarLoop]: === Iteration 574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:05,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:05,344 INFO L82 PathProgramCache]: Analyzing trace with hash -585785463, now seen corresponding path program 568 times [2021-03-11 14:37:05,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:05,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841821682] [2021-03-11 14:37:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:05,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:05,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:05,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:05,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:05,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:05,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:05,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:05,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:05,424 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:05,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:05,451 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:05,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:05,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841821682] [2021-03-11 14:37:05,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:05,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:05,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725510678] [2021-03-11 14:37:05,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:05,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:05,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:05,477 INFO L87 Difference]: Start difference. First operand 402 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:05,551 INFO L93 Difference]: Finished difference Result 692 states and 2043 transitions. [2021-03-11 14:37:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:05,552 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:05,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:05,553 INFO L225 Difference]: With dead ends: 692 [2021-03-11 14:37:05,553 INFO L226 Difference]: Without dead ends: 672 [2021-03-11 14:37:05,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 141.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-03-11 14:37:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 398. [2021-03-11 14:37:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4534005037783375) internal successors, (1371), 397 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1371 transitions. [2021-03-11 14:37:05,559 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1371 transitions. Word has length 22 [2021-03-11 14:37:05,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:05,559 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1371 transitions. [2021-03-11 14:37:05,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1371 transitions. [2021-03-11 14:37:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:05,560 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:05,560 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:05,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable573 [2021-03-11 14:37:05,560 INFO L428 AbstractCegarLoop]: === Iteration 575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash 76232053, now seen corresponding path program 569 times [2021-03-11 14:37:05,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:05,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843970855] [2021-03-11 14:37:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:05,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:05,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:05,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:05,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:05,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:05,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:05,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:05,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:05,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:05,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:05,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:05,655 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:05,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843970855] [2021-03-11 14:37:05,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:05,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:05,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027404269] [2021-03-11 14:37:05,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:05,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:05,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:05,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:05,681 INFO L87 Difference]: Start difference. First operand 398 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:05,765 INFO L93 Difference]: Finished difference Result 693 states and 2047 transitions. [2021-03-11 14:37:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:05,766 INFO L225 Difference]: With dead ends: 693 [2021-03-11 14:37:05,766 INFO L226 Difference]: Without dead ends: 680 [2021-03-11 14:37:05,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-03-11 14:37:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 404. [2021-03-11 14:37:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.4292803970223327) internal successors, (1382), 403 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1382 transitions. [2021-03-11 14:37:05,773 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1382 transitions. Word has length 22 [2021-03-11 14:37:05,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:05,773 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 1382 transitions. [2021-03-11 14:37:05,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1382 transitions. [2021-03-11 14:37:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:05,774 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:05,774 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:05,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable574 [2021-03-11 14:37:05,774 INFO L428 AbstractCegarLoop]: === Iteration 576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:05,774 INFO L82 PathProgramCache]: Analyzing trace with hash 931538707, now seen corresponding path program 570 times [2021-03-11 14:37:05,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:05,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272365412] [2021-03-11 14:37:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:05,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:05,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:05,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:05,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:05,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:05,805 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:05,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:05,821 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:05,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:05,843 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:05,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:05,870 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:05,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:05,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272365412] [2021-03-11 14:37:05,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:05,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:05,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4630566] [2021-03-11 14:37:05,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:05,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:05,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:05,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:05,896 INFO L87 Difference]: Start difference. First operand 404 states and 1382 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:05,964 INFO L93 Difference]: Finished difference Result 696 states and 2047 transitions. [2021-03-11 14:37:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:05,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:05,965 INFO L225 Difference]: With dead ends: 696 [2021-03-11 14:37:05,965 INFO L226 Difference]: Without dead ends: 670 [2021-03-11 14:37:05,966 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-03-11 14:37:05,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 394. [2021-03-11 14:37:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.460559796437659) internal successors, (1360), 393 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1360 transitions. [2021-03-11 14:37:05,972 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:05,972 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1360 transitions. [2021-03-11 14:37:05,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1360 transitions. [2021-03-11 14:37:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:05,973 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:05,973 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:05,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575 [2021-03-11 14:37:05,973 INFO L428 AbstractCegarLoop]: === Iteration 577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:05,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1131619907, now seen corresponding path program 571 times [2021-03-11 14:37:05,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:05,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454063073] [2021-03-11 14:37:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:05,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:05,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:05,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:05,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:05,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:05,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:06,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:06,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:06,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:06,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:06,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:06,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:06,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:06,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:06,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454063073] [2021-03-11 14:37:06,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:06,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:06,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880215707] [2021-03-11 14:37:06,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:06,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:06,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:06,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:06,097 INFO L87 Difference]: Start difference. First operand 394 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:06,182 INFO L93 Difference]: Finished difference Result 704 states and 2080 transitions. [2021-03-11 14:37:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:06,184 INFO L225 Difference]: With dead ends: 704 [2021-03-11 14:37:06,184 INFO L226 Difference]: Without dead ends: 690 [2021-03-11 14:37:06,184 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-03-11 14:37:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 407. [2021-03-11 14:37:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.4334975369458127) internal successors, (1394), 406 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1394 transitions. [2021-03-11 14:37:06,191 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1394 transitions. Word has length 22 [2021-03-11 14:37:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:06,191 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1394 transitions. [2021-03-11 14:37:06,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1394 transitions. [2021-03-11 14:37:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:06,191 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:06,191 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:06,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable576 [2021-03-11 14:37:06,192 INFO L428 AbstractCegarLoop]: === Iteration 578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:06,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1968492535, now seen corresponding path program 572 times [2021-03-11 14:37:06,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:06,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900831104] [2021-03-11 14:37:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:06,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:06,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:06,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:06,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:06,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:06,223 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:06,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:06,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:06,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:06,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:06,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:06,286 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:06,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:06,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900831104] [2021-03-11 14:37:06,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:06,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:06,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341507599] [2021-03-11 14:37:06,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:06,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:06,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:06,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:06,312 INFO L87 Difference]: Start difference. First operand 407 states and 1394 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:06,395 INFO L93 Difference]: Finished difference Result 703 states and 2073 transitions. [2021-03-11 14:37:06,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:06,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:06,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:06,397 INFO L225 Difference]: With dead ends: 703 [2021-03-11 14:37:06,397 INFO L226 Difference]: Without dead ends: 685 [2021-03-11 14:37:06,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 147.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:06,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-03-11 14:37:06,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 402. [2021-03-11 14:37:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4413965087281797) internal successors, (1380), 401 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1380 transitions. [2021-03-11 14:37:06,404 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1380 transitions. Word has length 22 [2021-03-11 14:37:06,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:06,404 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1380 transitions. [2021-03-11 14:37:06,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,404 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1380 transitions. [2021-03-11 14:37:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:06,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:06,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:06,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable577 [2021-03-11 14:37:06,404 INFO L428 AbstractCegarLoop]: === Iteration 579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash -386917409, now seen corresponding path program 573 times [2021-03-11 14:37:06,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:06,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81661753] [2021-03-11 14:37:06,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:06,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:06,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:06,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:06,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:06,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:06,435 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:06,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:06,452 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:06,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:06,474 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:06,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:06,500 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:06,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:06,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81661753] [2021-03-11 14:37:06,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:06,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:06,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903707824] [2021-03-11 14:37:06,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:06,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:06,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:06,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:06,526 INFO L87 Difference]: Start difference. First operand 402 states and 1380 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:06,615 INFO L93 Difference]: Finished difference Result 710 states and 2086 transitions. [2021-03-11 14:37:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:06,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:06,616 INFO L225 Difference]: With dead ends: 710 [2021-03-11 14:37:06,616 INFO L226 Difference]: Without dead ends: 696 [2021-03-11 14:37:06,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-03-11 14:37:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 410. [2021-03-11 14:37:06,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.4083129584352077) internal successors, (1394), 409 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1394 transitions. [2021-03-11 14:37:06,623 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1394 transitions. Word has length 22 [2021-03-11 14:37:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:06,623 INFO L480 AbstractCegarLoop]: Abstraction has 410 states and 1394 transitions. [2021-03-11 14:37:06,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1394 transitions. [2021-03-11 14:37:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:06,624 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:06,624 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:06,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578 [2021-03-11 14:37:06,624 INFO L428 AbstractCegarLoop]: === Iteration 580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash -368483383, now seen corresponding path program 574 times [2021-03-11 14:37:06,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:06,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371941705] [2021-03-11 14:37:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:06,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:06,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:06,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:06,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:06,655 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:06,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:06,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:06,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:06,694 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:06,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:06,723 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:06,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:06,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371941705] [2021-03-11 14:37:06,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:06,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:06,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676445355] [2021-03-11 14:37:06,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:06,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:06,749 INFO L87 Difference]: Start difference. First operand 410 states and 1394 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:06,819 INFO L93 Difference]: Finished difference Result 712 states and 2083 transitions. [2021-03-11 14:37:06,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:06,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:06,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:06,820 INFO L225 Difference]: With dead ends: 712 [2021-03-11 14:37:06,820 INFO L226 Difference]: Without dead ends: 688 [2021-03-11 14:37:06,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-03-11 14:37:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 402. [2021-03-11 14:37:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.423940149625935) internal successors, (1373), 401 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1373 transitions. [2021-03-11 14:37:06,827 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:06,827 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1373 transitions. [2021-03-11 14:37:06,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:06,827 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1373 transitions. [2021-03-11 14:37:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:06,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:06,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:06,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579 [2021-03-11 14:37:06,828 INFO L428 AbstractCegarLoop]: === Iteration 581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:06,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1397037729, now seen corresponding path program 575 times [2021-03-11 14:37:06,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:06,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625998945] [2021-03-11 14:37:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:06,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:06,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:06,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:06,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:06,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:06,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:06,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:06,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:06,876 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:06,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:06,897 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:06,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:06,923 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:06,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:06,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625998945] [2021-03-11 14:37:06,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:06,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:06,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750581100] [2021-03-11 14:37:06,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:06,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:06,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:06,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:06,949 INFO L87 Difference]: Start difference. First operand 402 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:07,031 INFO L93 Difference]: Finished difference Result 706 states and 2071 transitions. [2021-03-11 14:37:07,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:07,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:07,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:07,032 INFO L225 Difference]: With dead ends: 706 [2021-03-11 14:37:07,032 INFO L226 Difference]: Without dead ends: 693 [2021-03-11 14:37:07,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-03-11 14:37:07,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 408. [2021-03-11 14:37:07,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.4004914004914006) internal successors, (1384), 407 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1384 transitions. [2021-03-11 14:37:07,039 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1384 transitions. Word has length 22 [2021-03-11 14:37:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:07,039 INFO L480 AbstractCegarLoop]: Abstraction has 408 states and 1384 transitions. [2021-03-11 14:37:07,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1384 transitions. [2021-03-11 14:37:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:07,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:07,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:07,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable580 [2021-03-11 14:37:07,040 INFO L428 AbstractCegarLoop]: === Iteration 582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:07,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:07,040 INFO L82 PathProgramCache]: Analyzing trace with hash -541731075, now seen corresponding path program 576 times [2021-03-11 14:37:07,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:07,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114473163] [2021-03-11 14:37:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:07,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:07,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:07,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:07,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:07,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:07,071 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:07,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:07,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:07,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:07,109 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:07,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:07,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:07,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:07,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114473163] [2021-03-11 14:37:07,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:07,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:07,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237398530] [2021-03-11 14:37:07,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:07,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:07,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:07,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:07,166 INFO L87 Difference]: Start difference. First operand 408 states and 1384 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:07,237 INFO L93 Difference]: Finished difference Result 709 states and 2071 transitions. [2021-03-11 14:37:07,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:07,238 INFO L225 Difference]: With dead ends: 709 [2021-03-11 14:37:07,238 INFO L226 Difference]: Without dead ends: 673 [2021-03-11 14:37:07,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-03-11 14:37:07,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 388. [2021-03-11 14:37:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4728682170542635) internal successors, (1344), 387 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1344 transitions. [2021-03-11 14:37:07,245 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1344 transitions. Word has length 22 [2021-03-11 14:37:07,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:07,245 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1344 transitions. [2021-03-11 14:37:07,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1344 transitions. [2021-03-11 14:37:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:07,246 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:07,246 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:07,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable581 [2021-03-11 14:37:07,246 INFO L428 AbstractCegarLoop]: === Iteration 583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:07,246 INFO L82 PathProgramCache]: Analyzing trace with hash -2082680321, now seen corresponding path program 577 times [2021-03-11 14:37:07,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:07,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398064369] [2021-03-11 14:37:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:07,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:07,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:07,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:07,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:07,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:07,286 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:07,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:07,315 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:07,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:07,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:07,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:07,376 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:07,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:07,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398064369] [2021-03-11 14:37:07,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:07,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:07,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144163543] [2021-03-11 14:37:07,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:07,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:07,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:07,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:07,402 INFO L87 Difference]: Start difference. First operand 388 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:07,492 INFO L93 Difference]: Finished difference Result 664 states and 1981 transitions. [2021-03-11 14:37:07,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:07,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:07,493 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:37:07,493 INFO L226 Difference]: Without dead ends: 654 [2021-03-11 14:37:07,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:07,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-03-11 14:37:07,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 397. [2021-03-11 14:37:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.4646464646464645) internal successors, (1372), 396 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1372 transitions. [2021-03-11 14:37:07,500 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1372 transitions. Word has length 22 [2021-03-11 14:37:07,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:07,500 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1372 transitions. [2021-03-11 14:37:07,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,500 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1372 transitions. [2021-03-11 14:37:07,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:07,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:07,501 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:07,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable582 [2021-03-11 14:37:07,501 INFO L428 AbstractCegarLoop]: === Iteration 584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:07,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:07,501 INFO L82 PathProgramCache]: Analyzing trace with hash 520107693, now seen corresponding path program 578 times [2021-03-11 14:37:07,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:07,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335575854] [2021-03-11 14:37:07,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:07,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:07,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:07,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:07,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:07,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:07,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:07,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:07,571 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:07,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:07,604 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:07,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:07,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:07,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:07,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:07,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335575854] [2021-03-11 14:37:07,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:07,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:07,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967430106] [2021-03-11 14:37:07,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:07,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:07,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:07,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:07,658 INFO L87 Difference]: Start difference. First operand 397 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:07,739 INFO L93 Difference]: Finished difference Result 668 states and 1987 transitions. [2021-03-11 14:37:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:07,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:07,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:07,741 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:37:07,741 INFO L226 Difference]: Without dead ends: 652 [2021-03-11 14:37:07,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-03-11 14:37:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 395. [2021-03-11 14:37:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.469543147208122) internal successors, (1367), 394 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1367 transitions. [2021-03-11 14:37:07,747 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:07,748 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1367 transitions. [2021-03-11 14:37:07,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1367 transitions. [2021-03-11 14:37:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:07,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:07,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:07,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable583 [2021-03-11 14:37:07,748 INFO L428 AbstractCegarLoop]: === Iteration 585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1136575819, now seen corresponding path program 579 times [2021-03-11 14:37:07,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:07,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098412149] [2021-03-11 14:37:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:07,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:07,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:07,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:07,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:07,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:07,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:07,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:07,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:07,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:07,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:07,852 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:07,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:07,879 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:07,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:07,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:07,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098412149] [2021-03-11 14:37:07,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:07,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:07,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631062305] [2021-03-11 14:37:07,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:07,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:07,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:07,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:07,905 INFO L87 Difference]: Start difference. First operand 395 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:07,985 INFO L93 Difference]: Finished difference Result 663 states and 1977 transitions. [2021-03-11 14:37:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:07,987 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:37:07,987 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:37:07,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:37:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 397. [2021-03-11 14:37:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.45959595959596) internal successors, (1370), 396 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1370 transitions. [2021-03-11 14:37:07,994 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1370 transitions. Word has length 22 [2021-03-11 14:37:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:07,994 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1370 transitions. [2021-03-11 14:37:07,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:07,994 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1370 transitions. [2021-03-11 14:37:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:07,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:07,994 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:07,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable584 [2021-03-11 14:37:07,994 INFO L428 AbstractCegarLoop]: === Iteration 586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1708030625, now seen corresponding path program 580 times [2021-03-11 14:37:07,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:07,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639942483] [2021-03-11 14:37:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:08,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:08,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:08,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:08,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:08,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:08,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:08,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:08,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:08,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:08,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:08,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:08,125 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:08,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:08,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639942483] [2021-03-11 14:37:08,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:08,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:08,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239438020] [2021-03-11 14:37:08,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:08,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:08,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:08,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:08,151 INFO L87 Difference]: Start difference. First operand 397 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:08,244 INFO L93 Difference]: Finished difference Result 666 states and 1981 transitions. [2021-03-11 14:37:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:08,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:08,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:08,245 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:37:08,245 INFO L226 Difference]: Without dead ends: 651 [2021-03-11 14:37:08,245 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-03-11 14:37:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 395. [2021-03-11 14:37:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.464467005076142) internal successors, (1365), 394 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1365 transitions. [2021-03-11 14:37:08,252 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:08,252 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1365 transitions. [2021-03-11 14:37:08,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1365 transitions. [2021-03-11 14:37:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:08,252 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:08,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:08,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable585 [2021-03-11 14:37:08,253 INFO L428 AbstractCegarLoop]: === Iteration 587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1055337495, now seen corresponding path program 581 times [2021-03-11 14:37:08,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:08,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310045439] [2021-03-11 14:37:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:08,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:08,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:08,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:08,279 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:08,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:08,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:08,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:08,328 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:08,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:08,352 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:08,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:08,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:08,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:08,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310045439] [2021-03-11 14:37:08,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:08,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114264429] [2021-03-11 14:37:08,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:08,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:08,407 INFO L87 Difference]: Start difference. First operand 395 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:08,489 INFO L93 Difference]: Finished difference Result 674 states and 2000 transitions. [2021-03-11 14:37:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:08,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:08,490 INFO L225 Difference]: With dead ends: 674 [2021-03-11 14:37:08,490 INFO L226 Difference]: Without dead ends: 660 [2021-03-11 14:37:08,491 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-03-11 14:37:08,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 400. [2021-03-11 14:37:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.443609022556391) internal successors, (1374), 399 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1374 transitions. [2021-03-11 14:37:08,498 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1374 transitions. Word has length 22 [2021-03-11 14:37:08,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:08,498 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1374 transitions. [2021-03-11 14:37:08,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,498 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1374 transitions. [2021-03-11 14:37:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:08,499 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:08,499 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:08,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586 [2021-03-11 14:37:08,499 INFO L428 AbstractCegarLoop]: === Iteration 588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:08,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:08,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1811293323, now seen corresponding path program 582 times [2021-03-11 14:37:08,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:08,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410597802] [2021-03-11 14:37:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:08,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:08,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:08,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:08,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:08,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:08,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:08,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:08,567 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:08,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:08,588 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:08,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:08,614 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:08,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:08,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410597802] [2021-03-11 14:37:08,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:08,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:08,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071087109] [2021-03-11 14:37:08,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:08,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:08,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:08,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:08,640 INFO L87 Difference]: Start difference. First operand 400 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:08,728 INFO L93 Difference]: Finished difference Result 673 states and 1993 transitions. [2021-03-11 14:37:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:08,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:08,729 INFO L225 Difference]: With dead ends: 673 [2021-03-11 14:37:08,729 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:37:08,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:37:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 393. [2021-03-11 14:37:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4693877551020407) internal successors, (1360), 392 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1360 transitions. [2021-03-11 14:37:08,736 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:08,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:08,736 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1360 transitions. [2021-03-11 14:37:08,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,736 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1360 transitions. [2021-03-11 14:37:08,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:08,737 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:08,737 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:08,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable587 [2021-03-11 14:37:08,737 INFO L428 AbstractCegarLoop]: === Iteration 589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash 611849121, now seen corresponding path program 583 times [2021-03-11 14:37:08,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:08,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140971015] [2021-03-11 14:37:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:08,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:08,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:08,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:08,756 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:08,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:08,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:08,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:08,802 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:08,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:08,834 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:08,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:08,861 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:08,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:08,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140971015] [2021-03-11 14:37:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:08,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071189346] [2021-03-11 14:37:08,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:08,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:08,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:08,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:08,887 INFO L87 Difference]: Start difference. First operand 393 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:08,968 INFO L93 Difference]: Finished difference Result 673 states and 1997 transitions. [2021-03-11 14:37:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:08,970 INFO L225 Difference]: With dead ends: 673 [2021-03-11 14:37:08,970 INFO L226 Difference]: Without dead ends: 663 [2021-03-11 14:37:08,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-03-11 14:37:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 399. [2021-03-11 14:37:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4547738693467336) internal successors, (1375), 398 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1375 transitions. [2021-03-11 14:37:08,976 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1375 transitions. Word has length 22 [2021-03-11 14:37:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:08,976 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1375 transitions. [2021-03-11 14:37:08,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1375 transitions. [2021-03-11 14:37:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:08,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:08,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:08,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable588 [2021-03-11 14:37:08,977 INFO L428 AbstractCegarLoop]: === Iteration 590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:08,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:08,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1080330161, now seen corresponding path program 584 times [2021-03-11 14:37:08,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:08,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007958423] [2021-03-11 14:37:08,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:08,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:08,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:08,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:08,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:08,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:08,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:09,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:09,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:09,042 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:09,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:09,073 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:09,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:09,100 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:09,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:09,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007958423] [2021-03-11 14:37:09,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:09,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:09,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123748785] [2021-03-11 14:37:09,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:09,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:09,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:09,126 INFO L87 Difference]: Start difference. First operand 399 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:09,218 INFO L93 Difference]: Finished difference Result 677 states and 2003 transitions. [2021-03-11 14:37:09,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:09,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:09,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:09,219 INFO L225 Difference]: With dead ends: 677 [2021-03-11 14:37:09,219 INFO L226 Difference]: Without dead ends: 661 [2021-03-11 14:37:09,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-11 14:37:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 397. [2021-03-11 14:37:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.45959595959596) internal successors, (1370), 396 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1370 transitions. [2021-03-11 14:37:09,226 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1370 transitions. Word has length 22 [2021-03-11 14:37:09,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:09,226 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1370 transitions. [2021-03-11 14:37:09,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,226 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1370 transitions. [2021-03-11 14:37:09,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:09,226 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:09,226 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:09,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable589 [2021-03-11 14:37:09,227 INFO L428 AbstractCegarLoop]: === Iteration 591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:09,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1147078923, now seen corresponding path program 585 times [2021-03-11 14:37:09,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:09,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405999610] [2021-03-11 14:37:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:09,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:09,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:09,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:09,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:09,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:09,269 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:09,294 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:09,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:09,325 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:09,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:09,351 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:09,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405999610] [2021-03-11 14:37:09,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:09,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:09,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47009470] [2021-03-11 14:37:09,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:09,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:09,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:09,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:09,377 INFO L87 Difference]: Start difference. First operand 397 states and 1370 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:09,463 INFO L93 Difference]: Finished difference Result 676 states and 2000 transitions. [2021-03-11 14:37:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:09,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:09,464 INFO L225 Difference]: With dead ends: 676 [2021-03-11 14:37:09,465 INFO L226 Difference]: Without dead ends: 666 [2021-03-11 14:37:09,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:09,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-03-11 14:37:09,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 400. [2021-03-11 14:37:09,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.4461152882205512) internal successors, (1375), 399 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1375 transitions. [2021-03-11 14:37:09,474 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1375 transitions. Word has length 22 [2021-03-11 14:37:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:09,474 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1375 transitions. [2021-03-11 14:37:09,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1375 transitions. [2021-03-11 14:37:09,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:09,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:09,475 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:09,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable590 [2021-03-11 14:37:09,475 INFO L428 AbstractCegarLoop]: === Iteration 592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1831731069, now seen corresponding path program 586 times [2021-03-11 14:37:09,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:09,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108391662] [2021-03-11 14:37:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:09,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:09,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:09,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:09,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:09,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:09,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:09,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:09,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:09,571 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:09,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:09,598 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:09,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:09,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108391662] [2021-03-11 14:37:09,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:09,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:09,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640946473] [2021-03-11 14:37:09,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:09,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:09,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:09,624 INFO L87 Difference]: Start difference. First operand 400 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:09,694 INFO L93 Difference]: Finished difference Result 682 states and 2009 transitions. [2021-03-11 14:37:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:09,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:09,696 INFO L225 Difference]: With dead ends: 682 [2021-03-11 14:37:09,696 INFO L226 Difference]: Without dead ends: 663 [2021-03-11 14:37:09,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 156.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-03-11 14:37:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 397. [2021-03-11 14:37:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.452020202020202) internal successors, (1367), 396 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1367 transitions. [2021-03-11 14:37:09,702 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:09,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:09,703 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1367 transitions. [2021-03-11 14:37:09,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1367 transitions. [2021-03-11 14:37:09,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:09,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:09,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:09,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable591 [2021-03-11 14:37:09,703 INFO L428 AbstractCegarLoop]: === Iteration 593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:09,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1065840599, now seen corresponding path program 587 times [2021-03-11 14:37:09,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:09,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860290227] [2021-03-11 14:37:09,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:09,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:09,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:09,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:09,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:09,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:09,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:09,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:09,768 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:09,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:09,790 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:09,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:09,817 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:09,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:09,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860290227] [2021-03-11 14:37:09,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:09,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:09,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517949931] [2021-03-11 14:37:09,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:09,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:09,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:09,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:09,843 INFO L87 Difference]: Start difference. First operand 397 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:09,930 INFO L93 Difference]: Finished difference Result 689 states and 2026 transitions. [2021-03-11 14:37:09,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:09,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:09,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:09,932 INFO L225 Difference]: With dead ends: 689 [2021-03-11 14:37:09,932 INFO L226 Difference]: Without dead ends: 675 [2021-03-11 14:37:09,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-03-11 14:37:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 405. [2021-03-11 14:37:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.4183168316831685) internal successors, (1381), 404 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1381 transitions. [2021-03-11 14:37:09,939 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1381 transitions. Word has length 22 [2021-03-11 14:37:09,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:09,939 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 1381 transitions. [2021-03-11 14:37:09,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1381 transitions. [2021-03-11 14:37:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:09,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:09,939 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:09,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable592 [2021-03-11 14:37:09,939 INFO L428 AbstractCegarLoop]: === Iteration 594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:09,940 INFO L82 PathProgramCache]: Analyzing trace with hash -873161717, now seen corresponding path program 588 times [2021-03-11 14:37:09,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:09,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084688229] [2021-03-11 14:37:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:09,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:09,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:09,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:09,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:09,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:09,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:09,980 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:09,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:10,005 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:10,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:10,027 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:10,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:10,055 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:10,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:10,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084688229] [2021-03-11 14:37:10,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:10,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:10,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865332633] [2021-03-11 14:37:10,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:10,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:10,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:10,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:10,080 INFO L87 Difference]: Start difference. First operand 405 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:10,149 INFO L93 Difference]: Finished difference Result 691 states and 2023 transitions. [2021-03-11 14:37:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:10,150 INFO L225 Difference]: With dead ends: 691 [2021-03-11 14:37:10,150 INFO L226 Difference]: Without dead ends: 663 [2021-03-11 14:37:10,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-03-11 14:37:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 393. [2021-03-11 14:37:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4591836734693877) internal successors, (1356), 392 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1356 transitions. [2021-03-11 14:37:10,157 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:10,157 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1356 transitions. [2021-03-11 14:37:10,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1356 transitions. [2021-03-11 14:37:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:10,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:10,158 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:10,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable593 [2021-03-11 14:37:10,158 INFO L428 AbstractCegarLoop]: === Iteration 595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash 548830497, now seen corresponding path program 589 times [2021-03-11 14:37:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:10,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634063137] [2021-03-11 14:37:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:10,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:10,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:10,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:10,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:10,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:10,198 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:10,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:10,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:10,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:10,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:10,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:10,288 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:10,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634063137] [2021-03-11 14:37:10,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:10,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:10,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136579769] [2021-03-11 14:37:10,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:10,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:10,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:10,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:10,314 INFO L87 Difference]: Start difference. First operand 393 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:10,402 INFO L93 Difference]: Finished difference Result 668 states and 1983 transitions. [2021-03-11 14:37:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:10,403 INFO L225 Difference]: With dead ends: 668 [2021-03-11 14:37:10,403 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:37:10,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:37:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 398. [2021-03-11 14:37:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4483627204030225) internal successors, (1369), 397 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1369 transitions. [2021-03-11 14:37:10,410 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:10,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:10,410 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1369 transitions. [2021-03-11 14:37:10,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1369 transitions. [2021-03-11 14:37:10,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:10,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:10,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:10,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable594 [2021-03-11 14:37:10,411 INFO L428 AbstractCegarLoop]: === Iteration 596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:10,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:10,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1120285303, now seen corresponding path program 590 times [2021-03-11 14:37:10,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:10,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677224179] [2021-03-11 14:37:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:10,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:10,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:10,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:10,430 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:10,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:10,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:10,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:10,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:10,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:10,514 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:10,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:10,541 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:10,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677224179] [2021-03-11 14:37:10,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:10,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:10,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319314995] [2021-03-11 14:37:10,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:10,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:10,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:10,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:10,566 INFO L87 Difference]: Start difference. First operand 398 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:10,673 INFO L93 Difference]: Finished difference Result 671 states and 1987 transitions. [2021-03-11 14:37:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:10,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:10,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:10,674 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:37:10,674 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:37:10,674 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:37:10,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 396. [2021-03-11 14:37:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4531645569620255) internal successors, (1364), 395 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1364 transitions. [2021-03-11 14:37:10,681 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:10,681 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1364 transitions. [2021-03-11 14:37:10,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1364 transitions. [2021-03-11 14:37:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:10,681 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:10,681 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:10,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable595 [2021-03-11 14:37:10,682 INFO L428 AbstractCegarLoop]: === Iteration 597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:10,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2135195841, now seen corresponding path program 591 times [2021-03-11 14:37:10,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:10,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443058195] [2021-03-11 14:37:10,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:10,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:10,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:10,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:10,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:10,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:10,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:10,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:10,749 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:10,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:10,780 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:10,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:10,806 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:10,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:10,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443058195] [2021-03-11 14:37:10,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:10,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:10,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269028377] [2021-03-11 14:37:10,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:10,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:10,832 INFO L87 Difference]: Start difference. First operand 396 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:10,924 INFO L93 Difference]: Finished difference Result 672 states and 1988 transitions. [2021-03-11 14:37:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:10,925 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:37:10,925 INFO L226 Difference]: Without dead ends: 662 [2021-03-11 14:37:10,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-03-11 14:37:10,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 399. [2021-03-11 14:37:10,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4396984924623117) internal successors, (1369), 398 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1369 transitions. [2021-03-11 14:37:10,932 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:10,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:10,932 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1369 transitions. [2021-03-11 14:37:10,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1369 transitions. [2021-03-11 14:37:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:10,932 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:10,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:10,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596 [2021-03-11 14:37:10,933 INFO L428 AbstractCegarLoop]: === Iteration 598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:10,933 INFO L82 PathProgramCache]: Analyzing trace with hash -819038537, now seen corresponding path program 592 times [2021-03-11 14:37:10,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:10,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498570023] [2021-03-11 14:37:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:10,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:10,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:10,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:10,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:10,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:10,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:10,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:11,003 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:11,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:11,034 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:11,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:11,062 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:11,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:11,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498570023] [2021-03-11 14:37:11,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:11,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:11,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297678482] [2021-03-11 14:37:11,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:11,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:11,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:11,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:11,089 INFO L87 Difference]: Start difference. First operand 399 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:11,168 INFO L93 Difference]: Finished difference Result 678 states and 1997 transitions. [2021-03-11 14:37:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:11,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:11,170 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:37:11,170 INFO L226 Difference]: Without dead ends: 659 [2021-03-11 14:37:11,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 161.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-03-11 14:37:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 396. [2021-03-11 14:37:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4455696202531647) internal successors, (1361), 395 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1361 transitions. [2021-03-11 14:37:11,177 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:11,177 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1361 transitions. [2021-03-11 14:37:11,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1361 transitions. [2021-03-11 14:37:11,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:11,178 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:11,178 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:11,178 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable597 [2021-03-11 14:37:11,178 INFO L428 AbstractCegarLoop]: === Iteration 599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1028511233, now seen corresponding path program 593 times [2021-03-11 14:37:11,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:11,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489102482] [2021-03-11 14:37:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:11,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:11,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:11,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:11,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:11,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:11,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:11,245 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:11,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:11,267 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:11,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:11,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:11,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:11,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489102482] [2021-03-11 14:37:11,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:11,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398727764] [2021-03-11 14:37:11,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:11,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:11,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:11,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:11,320 INFO L87 Difference]: Start difference. First operand 396 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:11,409 INFO L93 Difference]: Finished difference Result 681 states and 2006 transitions. [2021-03-11 14:37:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:11,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:11,411 INFO L225 Difference]: With dead ends: 681 [2021-03-11 14:37:11,411 INFO L226 Difference]: Without dead ends: 668 [2021-03-11 14:37:11,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-03-11 14:37:11,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 402. [2021-03-11 14:37:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.4214463840399003) internal successors, (1372), 401 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1372 transitions. [2021-03-11 14:37:11,418 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1372 transitions. Word has length 22 [2021-03-11 14:37:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:11,418 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1372 transitions. [2021-03-11 14:37:11,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1372 transitions. [2021-03-11 14:37:11,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:11,419 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:11,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:11,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable598 [2021-03-11 14:37:11,419 INFO L428 AbstractCegarLoop]: === Iteration 600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash -283808735, now seen corresponding path program 594 times [2021-03-11 14:37:11,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:11,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431825244] [2021-03-11 14:37:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:11,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:11,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:11,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:11,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:11,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:11,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:11,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:11,488 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:11,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:11,510 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:11,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:11,538 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:11,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:11,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431825244] [2021-03-11 14:37:11,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:11,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:11,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297997882] [2021-03-11 14:37:11,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:11,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:11,565 INFO L87 Difference]: Start difference. First operand 402 states and 1372 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:11,654 INFO L93 Difference]: Finished difference Result 684 states and 2006 transitions. [2021-03-11 14:37:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:11,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:11,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:11,656 INFO L225 Difference]: With dead ends: 684 [2021-03-11 14:37:11,656 INFO L226 Difference]: Without dead ends: 659 [2021-03-11 14:37:11,656 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 154.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-03-11 14:37:11,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 393. [2021-03-11 14:37:11,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.451530612244898) internal successors, (1353), 392 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1353 transitions. [2021-03-11 14:37:11,662 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1353 transitions. Word has length 22 [2021-03-11 14:37:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:11,662 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1353 transitions. [2021-03-11 14:37:11,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1353 transitions. [2021-03-11 14:37:11,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:11,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:11,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:11,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable599 [2021-03-11 14:37:11,663 INFO L428 AbstractCegarLoop]: === Iteration 601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:11,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:11,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1132845681, now seen corresponding path program 595 times [2021-03-11 14:37:11,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:11,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068105722] [2021-03-11 14:37:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:11,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:11,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:11,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:11,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:11,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:11,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:11,705 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:11,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:11,722 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:11,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:11,743 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:11,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:11,770 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:11,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:11,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068105722] [2021-03-11 14:37:11,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:11,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:11,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712953608] [2021-03-11 14:37:11,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:11,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:11,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:11,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:11,804 INFO L87 Difference]: Start difference. First operand 393 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:11,892 INFO L93 Difference]: Finished difference Result 696 states and 2050 transitions. [2021-03-11 14:37:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:11,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:11,893 INFO L225 Difference]: With dead ends: 696 [2021-03-11 14:37:11,893 INFO L226 Difference]: Without dead ends: 682 [2021-03-11 14:37:11,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-03-11 14:37:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 406. [2021-03-11 14:37:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.4246913580246914) internal successors, (1387), 405 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1387 transitions. [2021-03-11 14:37:11,900 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1387 transitions. Word has length 22 [2021-03-11 14:37:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:11,900 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 1387 transitions. [2021-03-11 14:37:11,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1387 transitions. [2021-03-11 14:37:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:11,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:11,901 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:11,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable600 [2021-03-11 14:37:11,901 INFO L428 AbstractCegarLoop]: === Iteration 602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:11,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash -376889853, now seen corresponding path program 596 times [2021-03-11 14:37:11,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:11,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874440398] [2021-03-11 14:37:11,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:11,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:11,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:11,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:11,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:11,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:11,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:11,956 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:11,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:11,974 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:11,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:11,998 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:12,025 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:12,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874440398] [2021-03-11 14:37:12,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:12,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346320033] [2021-03-11 14:37:12,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:12,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:12,052 INFO L87 Difference]: Start difference. First operand 406 states and 1387 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:12,137 INFO L93 Difference]: Finished difference Result 695 states and 2043 transitions. [2021-03-11 14:37:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:12,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:12,139 INFO L225 Difference]: With dead ends: 695 [2021-03-11 14:37:12,139 INFO L226 Difference]: Without dead ends: 677 [2021-03-11 14:37:12,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2021-03-11 14:37:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 401. [2021-03-11 14:37:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.4325) internal successors, (1373), 400 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1373 transitions. [2021-03-11 14:37:12,145 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:12,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:12,145 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1373 transitions. [2021-03-11 14:37:12,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1373 transitions. [2021-03-11 14:37:12,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:12,146 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:12,146 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:12,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable601 [2021-03-11 14:37:12,146 INFO L428 AbstractCegarLoop]: === Iteration 603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash 478095277, now seen corresponding path program 597 times [2021-03-11 14:37:12,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:12,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330988458] [2021-03-11 14:37:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:12,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:12,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:12,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:12,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:12,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:12,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:12,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:12,203 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:12,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:12,225 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:12,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:12,252 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:12,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:12,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330988458] [2021-03-11 14:37:12,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:12,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:12,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834552681] [2021-03-11 14:37:12,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:12,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:12,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:12,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:12,278 INFO L87 Difference]: Start difference. First operand 401 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:12,380 INFO L93 Difference]: Finished difference Result 702 states and 2056 transitions. [2021-03-11 14:37:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:12,381 INFO L225 Difference]: With dead ends: 702 [2021-03-11 14:37:12,381 INFO L226 Difference]: Without dead ends: 688 [2021-03-11 14:37:12,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-03-11 14:37:12,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 409. [2021-03-11 14:37:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 3.3995098039215685) internal successors, (1387), 408 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 1387 transitions. [2021-03-11 14:37:12,388 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 1387 transitions. Word has length 22 [2021-03-11 14:37:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:12,388 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 1387 transitions. [2021-03-11 14:37:12,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,388 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 1387 transitions. [2021-03-11 14:37:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:12,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:12,389 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:12,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable602 [2021-03-11 14:37:12,389 INFO L428 AbstractCegarLoop]: === Iteration 604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:12,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1460907039, now seen corresponding path program 598 times [2021-03-11 14:37:12,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:12,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140823081] [2021-03-11 14:37:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:12,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:12,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:12,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:12,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:12,429 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:12,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:12,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:12,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:12,468 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:12,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:12,495 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:12,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:12,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140823081] [2021-03-11 14:37:12,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:12,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:12,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843695023] [2021-03-11 14:37:12,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:12,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:12,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:12,521 INFO L87 Difference]: Start difference. First operand 409 states and 1387 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:12,590 INFO L93 Difference]: Finished difference Result 704 states and 2053 transitions. [2021-03-11 14:37:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:12,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:12,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:12,592 INFO L225 Difference]: With dead ends: 704 [2021-03-11 14:37:12,592 INFO L226 Difference]: Without dead ends: 680 [2021-03-11 14:37:12,592 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-03-11 14:37:12,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 401. [2021-03-11 14:37:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.415) internal successors, (1366), 400 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1366 transitions. [2021-03-11 14:37:12,599 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1366 transitions. Word has length 22 [2021-03-11 14:37:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:12,599 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1366 transitions. [2021-03-11 14:37:12,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1366 transitions. [2021-03-11 14:37:12,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:12,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:12,599 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:12,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable603 [2021-03-11 14:37:12,600 INFO L428 AbstractCegarLoop]: === Iteration 605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:12,600 INFO L82 PathProgramCache]: Analyzing trace with hash -356419505, now seen corresponding path program 599 times [2021-03-11 14:37:12,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:12,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330082674] [2021-03-11 14:37:12,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:12,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:12,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:12,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:12,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:12,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:12,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:12,640 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:12,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:12,657 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:12,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:12,678 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:12,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:12,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:12,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:12,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330082674] [2021-03-11 14:37:12,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:12,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:12,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990061067] [2021-03-11 14:37:12,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:12,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:12,730 INFO L87 Difference]: Start difference. First operand 401 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:12,834 INFO L93 Difference]: Finished difference Result 698 states and 2041 transitions. [2021-03-11 14:37:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:12,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:12,836 INFO L225 Difference]: With dead ends: 698 [2021-03-11 14:37:12,836 INFO L226 Difference]: Without dead ends: 685 [2021-03-11 14:37:12,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-03-11 14:37:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 407. [2021-03-11 14:37:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.3916256157635467) internal successors, (1377), 406 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1377 transitions. [2021-03-11 14:37:12,842 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1377 transitions. Word has length 22 [2021-03-11 14:37:12,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:12,842 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1377 transitions. [2021-03-11 14:37:12,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:12,843 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1377 transitions. [2021-03-11 14:37:12,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:12,843 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:12,843 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:12,843 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable604 [2021-03-11 14:37:12,843 INFO L428 AbstractCegarLoop]: === Iteration 606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:12,843 INFO L82 PathProgramCache]: Analyzing trace with hash 498887149, now seen corresponding path program 600 times [2021-03-11 14:37:12,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:12,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815251800] [2021-03-11 14:37:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:12,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:12,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:12,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:12,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:37:12,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:12,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:12,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:12,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:12,901 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:12,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:12,922 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:12,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:12,950 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:12,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:12,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815251800] [2021-03-11 14:37:12,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:12,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:12,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402045868] [2021-03-11 14:37:12,975 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:12,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:12,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:12,976 INFO L87 Difference]: Start difference. First operand 407 states and 1377 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:13,051 INFO L93 Difference]: Finished difference Result 701 states and 2041 transitions. [2021-03-11 14:37:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:13,053 INFO L225 Difference]: With dead ends: 701 [2021-03-11 14:37:13,053 INFO L226 Difference]: Without dead ends: 661 [2021-03-11 14:37:13,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:13,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-11 14:37:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 383. [2021-03-11 14:37:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4842931937172774) internal successors, (1331), 382 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1331 transitions. [2021-03-11 14:37:13,059 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:13,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:13,059 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1331 transitions. [2021-03-11 14:37:13,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,059 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1331 transitions. [2021-03-11 14:37:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:13,060 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:13,060 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:13,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable605 [2021-03-11 14:37:13,060 INFO L428 AbstractCegarLoop]: === Iteration 607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1765066015, now seen corresponding path program 601 times [2021-03-11 14:37:13,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:13,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831699418] [2021-03-11 14:37:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:13,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:13,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:13,072 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:13,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:13,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:13,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:13,107 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:13,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:13,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:13,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:13,155 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:13,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:13,182 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:13,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:13,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831699418] [2021-03-11 14:37:13,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:13,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:13,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788785577] [2021-03-11 14:37:13,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:13,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:13,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:13,208 INFO L87 Difference]: Start difference. First operand 383 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:13,280 INFO L93 Difference]: Finished difference Result 586 states and 1755 transitions. [2021-03-11 14:37:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:13,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:13,281 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:37:13,281 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:13,282 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:13,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 390. [2021-03-11 14:37:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.48586118251928) internal successors, (1356), 389 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1356 transitions. [2021-03-11 14:37:13,288 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:13,288 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1356 transitions. [2021-03-11 14:37:13,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1356 transitions. [2021-03-11 14:37:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:13,288 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:13,288 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:13,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable606 [2021-03-11 14:37:13,289 INFO L428 AbstractCegarLoop]: === Iteration 608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash -918960323, now seen corresponding path program 602 times [2021-03-11 14:37:13,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:13,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877786175] [2021-03-11 14:37:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:13,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:13,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:13,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:13,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:13,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:13,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:13,337 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:13,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:13,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:13,385 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:13,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:13,412 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:13,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:13,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877786175] [2021-03-11 14:37:13,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:13,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:13,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206036900] [2021-03-11 14:37:13,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:13,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:13,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:13,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:13,438 INFO L87 Difference]: Start difference. First operand 390 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:13,526 INFO L93 Difference]: Finished difference Result 587 states and 1756 transitions. [2021-03-11 14:37:13,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:13,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:13,527 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:37:13,527 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:37:13,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:37:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 389. [2021-03-11 14:37:13,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4896907216494846) internal successors, (1354), 388 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1354 transitions. [2021-03-11 14:37:13,533 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:13,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:13,533 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1354 transitions. [2021-03-11 14:37:13,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,534 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1354 transitions. [2021-03-11 14:37:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:13,534 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:13,534 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:13,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607 [2021-03-11 14:37:13,534 INFO L428 AbstractCegarLoop]: === Iteration 609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:13,534 INFO L82 PathProgramCache]: Analyzing trace with hash 164628161, now seen corresponding path program 603 times [2021-03-11 14:37:13,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:13,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357911933] [2021-03-11 14:37:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:13,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:13,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:13,546 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:13,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:13,561 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:13,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:13,582 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:13,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:13,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:13,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:13,639 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:13,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:13,666 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:13,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:13,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357911933] [2021-03-11 14:37:13,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:13,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:13,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320616053] [2021-03-11 14:37:13,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:13,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:13,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:13,692 INFO L87 Difference]: Start difference. First operand 389 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:13,760 INFO L93 Difference]: Finished difference Result 590 states and 1762 transitions. [2021-03-11 14:37:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:13,762 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:37:13,762 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:37:13,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:37:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 390. [2021-03-11 14:37:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4832904884318765) internal successors, (1355), 389 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1355 transitions. [2021-03-11 14:37:13,768 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:13,768 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1355 transitions. [2021-03-11 14:37:13,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1355 transitions. [2021-03-11 14:37:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:13,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:13,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:13,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable608 [2021-03-11 14:37:13,769 INFO L428 AbstractCegarLoop]: === Iteration 610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:13,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:13,769 INFO L82 PathProgramCache]: Analyzing trace with hash -908457219, now seen corresponding path program 604 times [2021-03-11 14:37:13,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:13,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997125899] [2021-03-11 14:37:13,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:13,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:13,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:13,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:13,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:13,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:13,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:13,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:13,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:13,817 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:13,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:13,842 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:13,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:13,874 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:13,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:13,901 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:13,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:13,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997125899] [2021-03-11 14:37:13,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:13,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:13,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414247434] [2021-03-11 14:37:13,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:13,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:13,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:13,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:13,927 INFO L87 Difference]: Start difference. First operand 390 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:14,022 INFO L93 Difference]: Finished difference Result 595 states and 1771 transitions. [2021-03-11 14:37:14,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:14,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:14,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:14,023 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:37:14,023 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:37:14,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:37:14,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 389. [2021-03-11 14:37:14,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4871134020618557) internal successors, (1353), 388 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1353 transitions. [2021-03-11 14:37:14,029 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1353 transitions. Word has length 22 [2021-03-11 14:37:14,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:14,029 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1353 transitions. [2021-03-11 14:37:14,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,030 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1353 transitions. [2021-03-11 14:37:14,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:14,030 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:14,030 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:14,030 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable609 [2021-03-11 14:37:14,030 INFO L428 AbstractCegarLoop]: === Iteration 611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:14,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:14,030 INFO L82 PathProgramCache]: Analyzing trace with hash 175131265, now seen corresponding path program 605 times [2021-03-11 14:37:14,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:14,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372100413] [2021-03-11 14:37:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:14,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:14,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:14,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:14,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:14,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:14,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:14,103 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:14,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:14,135 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:14,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:14,169 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:14,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:14,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372100413] [2021-03-11 14:37:14,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:14,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:14,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580594955] [2021-03-11 14:37:14,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:14,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:14,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:14,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:14,195 INFO L87 Difference]: Start difference. First operand 389 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:14,283 INFO L93 Difference]: Finished difference Result 593 states and 1768 transitions. [2021-03-11 14:37:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:14,284 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:37:14,284 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:37:14,284 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:14,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:37:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 391. [2021-03-11 14:37:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.476923076923077) internal successors, (1356), 390 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1356 transitions. [2021-03-11 14:37:14,291 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:14,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:14,291 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1356 transitions. [2021-03-11 14:37:14,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1356 transitions. [2021-03-11 14:37:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:14,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:14,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:14,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable610 [2021-03-11 14:37:14,291 INFO L428 AbstractCegarLoop]: === Iteration 612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1786072223, now seen corresponding path program 606 times [2021-03-11 14:37:14,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:14,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919908883] [2021-03-11 14:37:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:14,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:14,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:14,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:14,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:14,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:14,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:14,339 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:14,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:14,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:14,398 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:14,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:14,425 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:14,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:14,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919908883] [2021-03-11 14:37:14,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:14,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:14,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114503420] [2021-03-11 14:37:14,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:14,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:14,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:14,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:14,451 INFO L87 Difference]: Start difference. First operand 391 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:14,542 INFO L93 Difference]: Finished difference Result 597 states and 1774 transitions. [2021-03-11 14:37:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:14,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:14,543 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:37:14,543 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:37:14,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:37:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 388. [2021-03-11 14:37:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.490956072351421) internal successors, (1351), 387 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1351 transitions. [2021-03-11 14:37:14,550 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1351 transitions. Word has length 22 [2021-03-11 14:37:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:14,550 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1351 transitions. [2021-03-11 14:37:14,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1351 transitions. [2021-03-11 14:37:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:14,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:14,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:14,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable611 [2021-03-11 14:37:14,550 INFO L428 AbstractCegarLoop]: === Iteration 613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:14,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:14,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1201203861, now seen corresponding path program 607 times [2021-03-11 14:37:14,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:14,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98943184] [2021-03-11 14:37:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:14,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:14,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:14,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:14,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:14,577 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:14,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:14,599 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:14,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:14,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:14,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:14,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:14,678 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:14,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98943184] [2021-03-11 14:37:14,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:14,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:14,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716955159] [2021-03-11 14:37:14,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:14,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:14,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:14,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:14,704 INFO L87 Difference]: Start difference. First operand 388 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:14,776 INFO L93 Difference]: Finished difference Result 585 states and 1752 transitions. [2021-03-11 14:37:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:14,778 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:37:14,778 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:37:14,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 160.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:37:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 390. [2021-03-11 14:37:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4832904884318765) internal successors, (1355), 389 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1355 transitions. [2021-03-11 14:37:14,784 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:14,784 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1355 transitions. [2021-03-11 14:37:14,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1355 transitions. [2021-03-11 14:37:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:14,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:14,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:14,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable612 [2021-03-11 14:37:14,785 INFO L428 AbstractCegarLoop]: === Iteration 614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash 409737097, now seen corresponding path program 608 times [2021-03-11 14:37:14,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:14,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630026744] [2021-03-11 14:37:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:14,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:14,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:14,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:14,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:14,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:14,812 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:14,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:14,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:14,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:14,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:14,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:14,884 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:14,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:14,910 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:14,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:14,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630026744] [2021-03-11 14:37:14,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:14,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:14,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380952331] [2021-03-11 14:37:14,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:14,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:14,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:14,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:14,937 INFO L87 Difference]: Start difference. First operand 390 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:15,028 INFO L93 Difference]: Finished difference Result 586 states and 1753 transitions. [2021-03-11 14:37:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:15,028 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:15,029 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:37:15,029 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:37:15,029 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 178.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:15,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:37:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 389. [2021-03-11 14:37:15,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4871134020618557) internal successors, (1353), 388 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1353 transitions. [2021-03-11 14:37:15,035 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1353 transitions. Word has length 22 [2021-03-11 14:37:15,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:15,036 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1353 transitions. [2021-03-11 14:37:15,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,036 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1353 transitions. [2021-03-11 14:37:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:15,036 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:15,036 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:15,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable613 [2021-03-11 14:37:15,036 INFO L428 AbstractCegarLoop]: === Iteration 615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1788949183, now seen corresponding path program 609 times [2021-03-11 14:37:15,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:15,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259401742] [2021-03-11 14:37:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:15,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:15,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:15,048 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:15,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:15,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:15,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:15,085 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:15,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:15,113 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:15,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:15,146 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:15,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:15,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:15,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259401742] [2021-03-11 14:37:15,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:15,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:15,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287844817] [2021-03-11 14:37:15,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:15,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:15,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:15,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:15,201 INFO L87 Difference]: Start difference. First operand 389 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:15,279 INFO L93 Difference]: Finished difference Result 588 states and 1757 transitions. [2021-03-11 14:37:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:15,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:15,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:15,280 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:37:15,280 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:37:15,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:15,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:37:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 390. [2021-03-11 14:37:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.480719794344473) internal successors, (1354), 389 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1354 transitions. [2021-03-11 14:37:15,287 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:15,287 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1354 transitions. [2021-03-11 14:37:15,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1354 transitions. [2021-03-11 14:37:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:15,287 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:15,287 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:15,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable614 [2021-03-11 14:37:15,287 INFO L428 AbstractCegarLoop]: === Iteration 616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:15,288 INFO L82 PathProgramCache]: Analyzing trace with hash 357221577, now seen corresponding path program 610 times [2021-03-11 14:37:15,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:15,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941066918] [2021-03-11 14:37:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:15,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:15,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:15,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:15,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:15,315 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:15,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:15,340 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:15,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:15,369 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:15,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:15,401 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:15,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:15,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:15,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:15,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:15,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941066918] [2021-03-11 14:37:15,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:15,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:15,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508040659] [2021-03-11 14:37:15,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:15,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:15,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:15,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:15,454 INFO L87 Difference]: Start difference. First operand 390 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:15,549 INFO L93 Difference]: Finished difference Result 592 states and 1764 transitions. [2021-03-11 14:37:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:15,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:15,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:15,550 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:37:15,550 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:37:15,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:15,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:37:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 389. [2021-03-11 14:37:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.484536082474227) internal successors, (1352), 388 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1352 transitions. [2021-03-11 14:37:15,557 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:15,557 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1352 transitions. [2021-03-11 14:37:15,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1352 transitions. [2021-03-11 14:37:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:15,557 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:15,557 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:15,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable615 [2021-03-11 14:37:15,557 INFO L428 AbstractCegarLoop]: === Iteration 617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:15,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1778446079, now seen corresponding path program 611 times [2021-03-11 14:37:15,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:15,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881074370] [2021-03-11 14:37:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:15,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:15,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:15,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:15,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:15,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:15,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:15,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:15,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:15,634 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:15,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:15,670 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:15,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:15,697 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:15,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881074370] [2021-03-11 14:37:15,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:15,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:15,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885707501] [2021-03-11 14:37:15,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:15,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:15,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:15,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:15,724 INFO L87 Difference]: Start difference. First operand 389 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:15,819 INFO L93 Difference]: Finished difference Result 591 states and 1763 transitions. [2021-03-11 14:37:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:15,821 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:37:15,821 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:37:15,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:15,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:37:15,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 391. [2021-03-11 14:37:15,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4743589743589745) internal successors, (1355), 390 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1355 transitions. [2021-03-11 14:37:15,827 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:15,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:15,827 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1355 transitions. [2021-03-11 14:37:15,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:15,827 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1355 transitions. [2021-03-11 14:37:15,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:15,827 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:15,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:15,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable616 [2021-03-11 14:37:15,828 INFO L428 AbstractCegarLoop]: === Iteration 618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1243216277, now seen corresponding path program 612 times [2021-03-11 14:37:15,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:15,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849133219] [2021-03-11 14:37:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:15,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:15,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:15,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:15,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:15,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:15,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:15,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:15,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:15,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:15,905 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:15,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:15,942 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:15,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:15,970 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:15,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:15,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849133219] [2021-03-11 14:37:15,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:15,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:15,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005813749] [2021-03-11 14:37:15,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:15,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:15,997 INFO L87 Difference]: Start difference. First operand 391 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:16,099 INFO L93 Difference]: Finished difference Result 594 states and 1767 transitions. [2021-03-11 14:37:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:16,100 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:16,101 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:37:16,101 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:37:16,101 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:16,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:37:16,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 388. [2021-03-11 14:37:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.488372093023256) internal successors, (1350), 387 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1350 transitions. [2021-03-11 14:37:16,107 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1350 transitions. Word has length 22 [2021-03-11 14:37:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:16,107 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1350 transitions. [2021-03-11 14:37:16,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1350 transitions. [2021-03-11 14:37:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:16,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:16,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:16,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable617 [2021-03-11 14:37:16,108 INFO L428 AbstractCegarLoop]: === Iteration 619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:16,108 INFO L82 PathProgramCache]: Analyzing trace with hash -875607637, now seen corresponding path program 613 times [2021-03-11 14:37:16,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:16,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083576047] [2021-03-11 14:37:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:16,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:16,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:16,120 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:16,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:16,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:16,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:16,158 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:16,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:16,183 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:16,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:16,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:16,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:16,246 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:16,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:16,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083576047] [2021-03-11 14:37:16,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:16,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:16,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878797436] [2021-03-11 14:37:16,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:16,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:16,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:16,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:16,272 INFO L87 Difference]: Start difference. First operand 388 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:16,344 INFO L93 Difference]: Finished difference Result 596 states and 1776 transitions. [2021-03-11 14:37:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:16,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:16,346 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:37:16,346 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:37:16,346 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 171.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:37:16,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 390. [2021-03-11 14:37:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.480719794344473) internal successors, (1354), 389 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1354 transitions. [2021-03-11 14:37:16,352 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:16,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:16,352 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1354 transitions. [2021-03-11 14:37:16,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,352 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1354 transitions. [2021-03-11 14:37:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:16,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:16,353 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:16,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable618 [2021-03-11 14:37:16,353 INFO L428 AbstractCegarLoop]: === Iteration 620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:16,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1948693017, now seen corresponding path program 614 times [2021-03-11 14:37:16,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:16,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573830157] [2021-03-11 14:37:16,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:16,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:16,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:16,365 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:16,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:16,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:16,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:16,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:16,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:16,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:16,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:16,458 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:16,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:16,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:16,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:16,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573830157] [2021-03-11 14:37:16,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:16,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:16,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929364904] [2021-03-11 14:37:16,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:16,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:16,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:16,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:16,513 INFO L87 Difference]: Start difference. First operand 390 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:16,612 INFO L93 Difference]: Finished difference Result 601 states and 1785 transitions. [2021-03-11 14:37:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:16,613 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:16,613 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:37:16,614 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:37:16,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 389. [2021-03-11 14:37:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.484536082474227) internal successors, (1352), 388 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1352 transitions. [2021-03-11 14:37:16,620 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:16,620 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1352 transitions. [2021-03-11 14:37:16,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1352 transitions. [2021-03-11 14:37:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:16,620 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:16,620 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:16,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable619 [2021-03-11 14:37:16,620 INFO L428 AbstractCegarLoop]: === Iteration 621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:16,621 INFO L82 PathProgramCache]: Analyzing trace with hash 137084895, now seen corresponding path program 615 times [2021-03-11 14:37:16,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:16,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890708402] [2021-03-11 14:37:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:16,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:16,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:16,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:16,647 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:16,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:16,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:16,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:16,693 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:16,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:16,726 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:16,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:16,754 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:16,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:16,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890708402] [2021-03-11 14:37:16,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:16,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:16,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304942763] [2021-03-11 14:37:16,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:16,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:16,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:16,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:16,780 INFO L87 Difference]: Start difference. First operand 389 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:16,843 INFO L93 Difference]: Finished difference Result 595 states and 1773 transitions. [2021-03-11 14:37:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:16,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:16,845 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:37:16,845 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:37:16,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:37:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 390. [2021-03-11 14:37:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4781491002570695) internal successors, (1353), 389 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1353 transitions. [2021-03-11 14:37:16,851 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1353 transitions. Word has length 22 [2021-03-11 14:37:16,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:16,851 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1353 transitions. [2021-03-11 14:37:16,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:16,851 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1353 transitions. [2021-03-11 14:37:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:16,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:16,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:16,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable620 [2021-03-11 14:37:16,852 INFO L428 AbstractCegarLoop]: === Iteration 622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:16,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:16,852 INFO L82 PathProgramCache]: Analyzing trace with hash -2011711641, now seen corresponding path program 616 times [2021-03-11 14:37:16,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:16,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270361032] [2021-03-11 14:37:16,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:16,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:16,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:16,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:16,864 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:16,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:16,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:16,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:16,901 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:16,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:16,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:16,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:16,959 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:16,986 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:16,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:17,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270361032] [2021-03-11 14:37:17,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:17,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:17,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578069935] [2021-03-11 14:37:17,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:17,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:17,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:17,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:17,013 INFO L87 Difference]: Start difference. First operand 390 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:17,112 INFO L93 Difference]: Finished difference Result 599 states and 1780 transitions. [2021-03-11 14:37:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:17,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:17,114 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:37:17,114 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:37:17,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:37:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 389. [2021-03-11 14:37:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.481958762886598) internal successors, (1351), 388 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1351 transitions. [2021-03-11 14:37:17,120 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1351 transitions. Word has length 22 [2021-03-11 14:37:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:17,120 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1351 transitions. [2021-03-11 14:37:17,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1351 transitions. [2021-03-11 14:37:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:17,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:17,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:17,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable621 [2021-03-11 14:37:17,121 INFO L428 AbstractCegarLoop]: === Iteration 623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:17,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:17,121 INFO L82 PathProgramCache]: Analyzing trace with hash 158091103, now seen corresponding path program 617 times [2021-03-11 14:37:17,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:17,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961010662] [2021-03-11 14:37:17,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:17,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:17,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:17,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:17,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:17,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:17,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:17,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:17,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:17,196 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:17,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:17,217 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:17,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:17,245 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:17,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:17,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961010662] [2021-03-11 14:37:17,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:17,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:17,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459953178] [2021-03-11 14:37:17,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:17,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:17,272 INFO L87 Difference]: Start difference. First operand 389 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:17,370 INFO L93 Difference]: Finished difference Result 609 states and 1804 transitions. [2021-03-11 14:37:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:17,371 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:37:17,372 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:17,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:17,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 394. [2021-03-11 14:37:17,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.460559796437659) internal successors, (1360), 393 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1360 transitions. [2021-03-11 14:37:17,378 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:17,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:17,378 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1360 transitions. [2021-03-11 14:37:17,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1360 transitions. [2021-03-11 14:37:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:17,379 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:17,379 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:17,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable622 [2021-03-11 14:37:17,379 INFO L428 AbstractCegarLoop]: === Iteration 624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:17,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:17,379 INFO L82 PathProgramCache]: Analyzing trace with hash -917620053, now seen corresponding path program 618 times [2021-03-11 14:37:17,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:17,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266939389] [2021-03-11 14:37:17,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:17,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:17,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:17,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:17,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:17,406 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:17,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:17,428 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:17,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:17,452 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:17,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:17,474 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:17,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:17,500 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:17,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:17,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266939389] [2021-03-11 14:37:17,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:17,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:17,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709321794] [2021-03-11 14:37:17,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:17,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:17,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:17,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:17,526 INFO L87 Difference]: Start difference. First operand 394 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:17,627 INFO L93 Difference]: Finished difference Result 608 states and 1797 transitions. [2021-03-11 14:37:17,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:17,629 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:37:17,629 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:37:17,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:17,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:37:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 388. [2021-03-11 14:37:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4857881136950906) internal successors, (1349), 387 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1349 transitions. [2021-03-11 14:37:17,635 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1349 transitions. Word has length 22 [2021-03-11 14:37:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:17,635 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1349 transitions. [2021-03-11 14:37:17,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1349 transitions. [2021-03-11 14:37:17,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:17,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:17,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:17,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable623 [2021-03-11 14:37:17,636 INFO L428 AbstractCegarLoop]: === Iteration 625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1060929545, now seen corresponding path program 619 times [2021-03-11 14:37:17,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:17,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436498392] [2021-03-11 14:37:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:17,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:17,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:17,648 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:17,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:17,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:17,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:17,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:17,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:17,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:17,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:17,752 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:17,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:17,780 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:17,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:17,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436498392] [2021-03-11 14:37:17,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:17,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:17,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797525978] [2021-03-11 14:37:17,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:17,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:17,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:17,806 INFO L87 Difference]: Start difference. First operand 388 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:17,897 INFO L93 Difference]: Finished difference Result 603 states and 1794 transitions. [2021-03-11 14:37:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:17,898 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:37:17,898 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:37:17,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:17,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:37:17,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 392. [2021-03-11 14:37:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.475703324808184) internal successors, (1359), 391 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1359 transitions. [2021-03-11 14:37:17,905 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:17,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:17,905 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1359 transitions. [2021-03-11 14:37:17,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1359 transitions. [2021-03-11 14:37:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:17,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:17,906 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:17,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable624 [2021-03-11 14:37:17,906 INFO L428 AbstractCegarLoop]: === Iteration 626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:17,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:17,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1623096793, now seen corresponding path program 620 times [2021-03-11 14:37:17,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:17,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503741252] [2021-03-11 14:37:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:17,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:17,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:17,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:17,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:17,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:17,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:17,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:17,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:17,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:17,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:17,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:18,015 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:18,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:18,043 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:18,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:18,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503741252] [2021-03-11 14:37:18,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:18,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:18,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135979979] [2021-03-11 14:37:18,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:18,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:18,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:18,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:18,069 INFO L87 Difference]: Start difference. First operand 392 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:18,150 INFO L93 Difference]: Finished difference Result 607 states and 1800 transitions. [2021-03-11 14:37:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:18,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:18,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:18,152 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:37:18,152 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:18,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:18,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:18,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 390. [2021-03-11 14:37:18,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.480719794344473) internal successors, (1354), 389 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1354 transitions. [2021-03-11 14:37:18,158 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:18,158 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1354 transitions. [2021-03-11 14:37:18,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1354 transitions. [2021-03-11 14:37:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:18,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:18,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:18,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable625 [2021-03-11 14:37:18,159 INFO L428 AbstractCegarLoop]: === Iteration 627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:18,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:18,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2073622077, now seen corresponding path program 621 times [2021-03-11 14:37:18,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:18,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347423667] [2021-03-11 14:37:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:18,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:18,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:18,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:18,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:18,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:18,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:18,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:18,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:18,235 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:18,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:18,272 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:18,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:18,299 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:18,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:18,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347423667] [2021-03-11 14:37:18,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:18,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:18,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298098564] [2021-03-11 14:37:18,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:18,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:18,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:18,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:18,326 INFO L87 Difference]: Start difference. First operand 390 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:18,418 INFO L93 Difference]: Finished difference Result 602 states and 1790 transitions. [2021-03-11 14:37:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:18,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:18,419 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:37:18,419 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:37:18,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:37:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 392. [2021-03-11 14:37:18,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4705882352941178) internal successors, (1357), 391 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1357 transitions. [2021-03-11 14:37:18,426 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1357 transitions. Word has length 22 [2021-03-11 14:37:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:18,426 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1357 transitions. [2021-03-11 14:37:18,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1357 transitions. [2021-03-11 14:37:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:18,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:18,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:18,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable626 [2021-03-11 14:37:18,426 INFO L428 AbstractCegarLoop]: === Iteration 628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:18,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1686115417, now seen corresponding path program 622 times [2021-03-11 14:37:18,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:18,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045252936] [2021-03-11 14:37:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:18,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:18,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:18,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:18,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:18,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:18,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:18,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:18,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:18,503 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:18,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:18,539 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:18,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:18,566 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:18,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:18,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045252936] [2021-03-11 14:37:18,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:18,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:18,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947585814] [2021-03-11 14:37:18,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:18,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:18,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:18,593 INFO L87 Difference]: Start difference. First operand 392 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:18,689 INFO L93 Difference]: Finished difference Result 605 states and 1794 transitions. [2021-03-11 14:37:18,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:18,691 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:37:18,691 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:37:18,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:18,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:37:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 390. [2021-03-11 14:37:18,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.475578406169666) internal successors, (1352), 389 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1352 transitions. [2021-03-11 14:37:18,697 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:18,697 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1352 transitions. [2021-03-11 14:37:18,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1352 transitions. [2021-03-11 14:37:18,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:18,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:18,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:18,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable627 [2021-03-11 14:37:18,698 INFO L428 AbstractCegarLoop]: === Iteration 629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:18,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:18,698 INFO L82 PathProgramCache]: Analyzing trace with hash 2084125181, now seen corresponding path program 623 times [2021-03-11 14:37:18,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:18,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404057648] [2021-03-11 14:37:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:18,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:18,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:18,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:18,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:18,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:18,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:18,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:18,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:18,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:18,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:18,797 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:18,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:18,824 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:18,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:18,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404057648] [2021-03-11 14:37:18,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:18,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:18,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125851215] [2021-03-11 14:37:18,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:18,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:18,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:18,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:18,851 INFO L87 Difference]: Start difference. First operand 390 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:18,932 INFO L93 Difference]: Finished difference Result 613 states and 1813 transitions. [2021-03-11 14:37:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:18,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:18,934 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:37:18,934 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:37:18,934 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:18,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:37:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 395. [2021-03-11 14:37:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.454314720812183) internal successors, (1361), 394 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1361 transitions. [2021-03-11 14:37:18,943 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:18,943 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1361 transitions. [2021-03-11 14:37:18,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1361 transitions. [2021-03-11 14:37:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:18,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:18,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:18,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable628 [2021-03-11 14:37:18,944 INFO L428 AbstractCegarLoop]: === Iteration 630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:18,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1008414025, now seen corresponding path program 624 times [2021-03-11 14:37:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961000095] [2021-03-11 14:37:18,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:18,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:18,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:18,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:18,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:18,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:18,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:18,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:18,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:18,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:19,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:19,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:19,041 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:19,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:19,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:19,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:19,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:19,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961000095] [2021-03-11 14:37:19,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:19,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:19,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127727003] [2021-03-11 14:37:19,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:19,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:19,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:19,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:19,094 INFO L87 Difference]: Start difference. First operand 395 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:19,184 INFO L93 Difference]: Finished difference Result 612 states and 1806 transitions. [2021-03-11 14:37:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:19,186 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:37:19,186 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:19,186 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:19,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 387. [2021-03-11 14:37:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.489637305699482) internal successors, (1347), 386 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1347 transitions. [2021-03-11 14:37:19,192 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1347 transitions. Word has length 22 [2021-03-11 14:37:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:19,192 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1347 transitions. [2021-03-11 14:37:19,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,192 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1347 transitions. [2021-03-11 14:37:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:19,193 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:19,193 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:19,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable629 [2021-03-11 14:37:19,193 INFO L428 AbstractCegarLoop]: === Iteration 631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:19,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:19,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1342580289, now seen corresponding path program 625 times [2021-03-11 14:37:19,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:19,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388243039] [2021-03-11 14:37:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:19,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:19,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:19,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:19,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:19,220 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:19,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:19,239 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:19,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:19,264 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:19,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:19,287 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:19,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:19,315 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:19,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:19,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388243039] [2021-03-11 14:37:19,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:19,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:19,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735694397] [2021-03-11 14:37:19,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:19,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:19,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:19,341 INFO L87 Difference]: Start difference. First operand 387 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:19,418 INFO L93 Difference]: Finished difference Result 601 states and 1789 transitions. [2021-03-11 14:37:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:19,419 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:19,419 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:37:19,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:37:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 392. [2021-03-11 14:37:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.483375959079284) internal successors, (1362), 391 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1362 transitions. [2021-03-11 14:37:19,425 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:19,426 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1362 transitions. [2021-03-11 14:37:19,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1362 transitions. [2021-03-11 14:37:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:19,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:19,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:19,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable630 [2021-03-11 14:37:19,426 INFO L428 AbstractCegarLoop]: === Iteration 632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1341446049, now seen corresponding path program 626 times [2021-03-11 14:37:19,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:19,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242509338] [2021-03-11 14:37:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:19,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:19,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:19,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:19,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:19,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:19,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:19,472 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:19,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:19,499 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:19,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:19,522 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:19,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:19,551 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:19,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:19,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242509338] [2021-03-11 14:37:19,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:19,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:19,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978866763] [2021-03-11 14:37:19,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:19,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:19,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:19,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:19,580 INFO L87 Difference]: Start difference. First operand 392 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:19,671 INFO L93 Difference]: Finished difference Result 602 states and 1790 transitions. [2021-03-11 14:37:19,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:19,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:19,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:19,672 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:37:19,672 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:19,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 391. [2021-03-11 14:37:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4871794871794872) internal successors, (1360), 390 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1360 transitions. [2021-03-11 14:37:19,679 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:19,679 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1360 transitions. [2021-03-11 14:37:19,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1360 transitions. [2021-03-11 14:37:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:19,680 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:19,680 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:19,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable631 [2021-03-11 14:37:19,680 INFO L428 AbstractCegarLoop]: === Iteration 633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:19,680 INFO L82 PathProgramCache]: Analyzing trace with hash -257857565, now seen corresponding path program 627 times [2021-03-11 14:37:19,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:19,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771057017] [2021-03-11 14:37:19,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:19,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:19,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:19,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:19,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:19,708 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:19,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:19,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:19,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:19,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:19,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:19,786 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:19,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:19,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:19,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:19,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771057017] [2021-03-11 14:37:19,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:19,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:19,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063931466] [2021-03-11 14:37:19,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:19,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:19,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:19,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:19,842 INFO L87 Difference]: Start difference. First operand 391 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:19,908 INFO L93 Difference]: Finished difference Result 605 states and 1796 transitions. [2021-03-11 14:37:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:19,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:19,909 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:37:19,909 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:37:19,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:37:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 392. [2021-03-11 14:37:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4808184143222505) internal successors, (1361), 391 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1361 transitions. [2021-03-11 14:37:19,916 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:19,916 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1361 transitions. [2021-03-11 14:37:19,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1361 transitions. [2021-03-11 14:37:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:19,916 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:19,916 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:19,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable632 [2021-03-11 14:37:19,916 INFO L428 AbstractCegarLoop]: === Iteration 634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:19,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1330942945, now seen corresponding path program 628 times [2021-03-11 14:37:19,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:19,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078437674] [2021-03-11 14:37:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:19,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:19,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:19,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:19,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:19,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:19,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:19,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:19,963 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:19,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:19,988 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:19,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:20,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:20,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:20,048 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:20,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:20,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:20,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078437674] [2021-03-11 14:37:20,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:20,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:20,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731337254] [2021-03-11 14:37:20,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:20,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:20,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:20,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:20,075 INFO L87 Difference]: Start difference. First operand 392 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:20,176 INFO L93 Difference]: Finished difference Result 610 states and 1805 transitions. [2021-03-11 14:37:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:20,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:20,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:20,177 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:37:20,177 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:20,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 391. [2021-03-11 14:37:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4846153846153847) internal successors, (1359), 390 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1359 transitions. [2021-03-11 14:37:20,184 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:20,184 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1359 transitions. [2021-03-11 14:37:20,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1359 transitions. [2021-03-11 14:37:20,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:20,184 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:20,184 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:20,184 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable633 [2021-03-11 14:37:20,184 INFO L428 AbstractCegarLoop]: === Iteration 635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:20,185 INFO L82 PathProgramCache]: Analyzing trace with hash -247354461, now seen corresponding path program 629 times [2021-03-11 14:37:20,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:20,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104582106] [2021-03-11 14:37:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:20,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:20,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:20,197 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:20,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:20,212 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:20,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:20,230 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:20,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:20,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:20,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:20,289 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:20,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:20,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:20,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:20,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104582106] [2021-03-11 14:37:20,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:20,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:20,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377723482] [2021-03-11 14:37:20,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:20,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:20,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:20,344 INFO L87 Difference]: Start difference. First operand 391 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:20,437 INFO L93 Difference]: Finished difference Result 608 states and 1802 transitions. [2021-03-11 14:37:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:20,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:20,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:20,438 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:37:20,438 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:37:20,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:20,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:37:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 393. [2021-03-11 14:37:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4744897959183674) internal successors, (1362), 392 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1362 transitions. [2021-03-11 14:37:20,445 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:20,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:20,445 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1362 transitions. [2021-03-11 14:37:20,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1362 transitions. [2021-03-11 14:37:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:20,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:20,446 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:20,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable634 [2021-03-11 14:37:20,446 INFO L428 AbstractCegarLoop]: === Iteration 636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1363586497, now seen corresponding path program 630 times [2021-03-11 14:37:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783601042] [2021-03-11 14:37:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:20,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:20,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:20,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:20,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:20,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:20,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:20,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:20,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:20,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:20,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:20,551 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:20,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:20,579 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:20,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:20,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783601042] [2021-03-11 14:37:20,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:20,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:20,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269942786] [2021-03-11 14:37:20,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:20,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:20,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:20,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:20,606 INFO L87 Difference]: Start difference. First operand 393 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:20,693 INFO L93 Difference]: Finished difference Result 612 states and 1808 transitions. [2021-03-11 14:37:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:20,695 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:37:20,695 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:20,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:20,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 390. [2021-03-11 14:37:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.488431876606684) internal successors, (1357), 389 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1357 transitions. [2021-03-11 14:37:20,701 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1357 transitions. Word has length 22 [2021-03-11 14:37:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:20,701 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1357 transitions. [2021-03-11 14:37:20,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1357 transitions. [2021-03-11 14:37:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:20,702 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:20,702 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:20,702 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635 [2021-03-11 14:37:20,702 INFO L428 AbstractCegarLoop]: === Iteration 637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:20,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:20,702 INFO L82 PathProgramCache]: Analyzing trace with hash 302344491, now seen corresponding path program 631 times [2021-03-11 14:37:20,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:20,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997068518] [2021-03-11 14:37:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:20,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:20,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:20,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:20,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:20,730 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:20,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:20,748 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:20,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:20,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:20,795 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:20,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:20,823 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:20,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:20,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997068518] [2021-03-11 14:37:20,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:20,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:20,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992470269] [2021-03-11 14:37:20,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:20,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:20,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:20,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:20,849 INFO L87 Difference]: Start difference. First operand 390 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:20,925 INFO L93 Difference]: Finished difference Result 606 states and 1798 transitions. [2021-03-11 14:37:20,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:20,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:20,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:20,926 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:37:20,926 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:37:20,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:37:20,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 393. [2021-03-11 14:37:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.479591836734694) internal successors, (1364), 392 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1364 transitions. [2021-03-11 14:37:20,932 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:20,933 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1364 transitions. [2021-03-11 14:37:20,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1364 transitions. [2021-03-11 14:37:20,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:20,933 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:20,933 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:20,933 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable636 [2021-03-11 14:37:20,933 INFO L428 AbstractCegarLoop]: === Iteration 638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1913285449, now seen corresponding path program 632 times [2021-03-11 14:37:20,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:20,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349175782] [2021-03-11 14:37:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:20,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:20,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:20,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:20,946 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:20,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:20,961 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:20,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:20,979 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:20,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:21,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:21,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:21,026 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:21,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:21,053 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:21,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:21,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:21,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349175782] [2021-03-11 14:37:21,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:21,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:21,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504816632] [2021-03-11 14:37:21,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:21,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:21,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:21,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:21,080 INFO L87 Difference]: Start difference. First operand 393 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:21,181 INFO L93 Difference]: Finished difference Result 607 states and 1799 transitions. [2021-03-11 14:37:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:21,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:21,182 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:37:21,182 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:37:21,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:37:21,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 392. [2021-03-11 14:37:21,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.483375959079284) internal successors, (1362), 391 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1362 transitions. [2021-03-11 14:37:21,189 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:21,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:21,189 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1362 transitions. [2021-03-11 14:37:21,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1362 transitions. [2021-03-11 14:37:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:21,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:21,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:21,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable637 [2021-03-11 14:37:21,189 INFO L428 AbstractCegarLoop]: === Iteration 639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:21,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:21,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1885838685, now seen corresponding path program 633 times [2021-03-11 14:37:21,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:21,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075740554] [2021-03-11 14:37:21,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:21,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:21,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:21,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:21,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:21,218 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:21,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:21,237 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:21,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:21,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:21,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:21,292 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:21,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:21,320 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:21,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:21,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075740554] [2021-03-11 14:37:21,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:21,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:21,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497104738] [2021-03-11 14:37:21,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:21,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:21,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:21,351 INFO L87 Difference]: Start difference. First operand 392 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:21,418 INFO L93 Difference]: Finished difference Result 613 states and 1810 transitions. [2021-03-11 14:37:21,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:21,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:21,419 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:37:21,419 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:37:21,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:37:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 394. [2021-03-11 14:37:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4732824427480917) internal successors, (1365), 393 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1365 transitions. [2021-03-11 14:37:21,426 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:21,426 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1365 transitions. [2021-03-11 14:37:21,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,426 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1365 transitions. [2021-03-11 14:37:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:21,426 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:21,426 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:21,426 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable638 [2021-03-11 14:37:21,426 INFO L428 AbstractCegarLoop]: === Iteration 640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:21,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1871273033, now seen corresponding path program 634 times [2021-03-11 14:37:21,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:21,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100330399] [2021-03-11 14:37:21,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:21,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:21,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:21,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:21,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:21,456 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:21,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:21,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:21,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:21,499 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:21,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:21,530 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:21,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:21,558 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:21,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:21,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100330399] [2021-03-11 14:37:21,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:21,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:21,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579516764] [2021-03-11 14:37:21,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:21,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:21,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:21,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:21,584 INFO L87 Difference]: Start difference. First operand 394 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:21,661 INFO L93 Difference]: Finished difference Result 620 states and 1822 transitions. [2021-03-11 14:37:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:21,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:21,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:21,662 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:37:21,663 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:37:21,663 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:37:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 392. [2021-03-11 14:37:21,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4782608695652173) internal successors, (1360), 391 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1360 transitions. [2021-03-11 14:37:21,669 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:21,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:21,669 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1360 transitions. [2021-03-11 14:37:21,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,669 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1360 transitions. [2021-03-11 14:37:21,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:21,670 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:21,670 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:21,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable639 [2021-03-11 14:37:21,670 INFO L428 AbstractCegarLoop]: === Iteration 641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:21,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:21,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1875335581, now seen corresponding path program 635 times [2021-03-11 14:37:21,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:21,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428374868] [2021-03-11 14:37:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:21,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:21,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:21,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:21,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:21,698 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:21,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:21,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:21,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:21,742 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:21,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:21,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:21,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:21,800 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:21,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:21,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:21,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428374868] [2021-03-11 14:37:21,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:21,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:21,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838700537] [2021-03-11 14:37:21,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:21,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:21,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:21,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:21,827 INFO L87 Difference]: Start difference. First operand 392 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:21,918 INFO L93 Difference]: Finished difference Result 616 states and 1815 transitions. [2021-03-11 14:37:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:21,920 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:37:21,920 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:37:21,920 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:37:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 395. [2021-03-11 14:37:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.464467005076142) internal successors, (1365), 394 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1365 transitions. [2021-03-11 14:37:21,927 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:21,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:21,927 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1365 transitions. [2021-03-11 14:37:21,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1365 transitions. [2021-03-11 14:37:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:21,927 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:21,927 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:21,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable640 [2021-03-11 14:37:21,927 INFO L428 AbstractCegarLoop]: === Iteration 642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:21,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash 270835179, now seen corresponding path program 636 times [2021-03-11 14:37:21,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:21,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253981572] [2021-03-11 14:37:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:21,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:21,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:21,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:21,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:21,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:21,965 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:21,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:21,986 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:21,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:22,013 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:22,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:22,049 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:22,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:22,082 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:22,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:22,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253981572] [2021-03-11 14:37:22,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:22,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:22,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690788865] [2021-03-11 14:37:22,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:22,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:22,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:22,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:22,113 INFO L87 Difference]: Start difference. First operand 395 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:22,187 INFO L93 Difference]: Finished difference Result 622 states and 1824 transitions. [2021-03-11 14:37:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:22,189 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:37:22,189 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:37:22,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:22,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:37:22,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 390. [2021-03-11 14:37:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4832904884318765) internal successors, (1355), 389 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1355 transitions. [2021-03-11 14:37:22,195 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:22,195 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1355 transitions. [2021-03-11 14:37:22,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1355 transitions. [2021-03-11 14:37:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:22,196 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:22,196 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:22,196 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable641 [2021-03-11 14:37:22,196 INFO L428 AbstractCegarLoop]: === Iteration 643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 627940715, now seen corresponding path program 637 times [2021-03-11 14:37:22,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:22,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523543286] [2021-03-11 14:37:22,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:22,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:22,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:22,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:22,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:22,224 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:22,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:22,244 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:22,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:22,271 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:22,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:22,303 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:22,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:22,331 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:22,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:22,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523543286] [2021-03-11 14:37:22,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:22,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:22,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121170149] [2021-03-11 14:37:22,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:22,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:22,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:22,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:22,358 INFO L87 Difference]: Start difference. First operand 390 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:22,433 INFO L93 Difference]: Finished difference Result 620 states and 1827 transitions. [2021-03-11 14:37:22,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:22,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:22,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:22,435 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:37:22,435 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:37:22,435 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:37:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 394. [2021-03-11 14:37:22,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4707379134860052) internal successors, (1364), 393 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1364 transitions. [2021-03-11 14:37:22,441 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:22,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:22,441 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1364 transitions. [2021-03-11 14:37:22,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1364 transitions. [2021-03-11 14:37:22,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:22,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:22,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:22,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable642 [2021-03-11 14:37:22,442 INFO L428 AbstractCegarLoop]: === Iteration 644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:22,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:22,442 INFO L82 PathProgramCache]: Analyzing trace with hash -445144665, now seen corresponding path program 638 times [2021-03-11 14:37:22,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:22,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370030098] [2021-03-11 14:37:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:22,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:22,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:22,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:22,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:22,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:22,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:22,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:22,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:22,514 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:22,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:22,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:22,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:22,584 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:22,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:22,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370030098] [2021-03-11 14:37:22,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:22,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:22,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897340790] [2021-03-11 14:37:22,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:22,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:22,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:22,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:22,615 INFO L87 Difference]: Start difference. First operand 394 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:22,702 INFO L93 Difference]: Finished difference Result 625 states and 1836 transitions. [2021-03-11 14:37:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:22,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:22,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:22,703 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:37:22,703 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:37:22,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:37:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 393. [2021-03-11 14:37:22,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4744897959183674) internal successors, (1362), 392 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1362 transitions. [2021-03-11 14:37:22,709 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:22,710 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1362 transitions. [2021-03-11 14:37:22,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1362 transitions. [2021-03-11 14:37:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:22,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:22,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:22,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable643 [2021-03-11 14:37:22,710 INFO L428 AbstractCegarLoop]: === Iteration 645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:22,710 INFO L82 PathProgramCache]: Analyzing trace with hash 40195393, now seen corresponding path program 639 times [2021-03-11 14:37:22,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:22,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481369986] [2021-03-11 14:37:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:22,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:22,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:22,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:22,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:22,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:22,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:22,755 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:22,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:22,779 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:22,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:22,810 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:22,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:22,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:22,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:22,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:22,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481369986] [2021-03-11 14:37:22,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:22,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:22,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791136318] [2021-03-11 14:37:22,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:22,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:22,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:22,863 INFO L87 Difference]: Start difference. First operand 393 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:22,931 INFO L93 Difference]: Finished difference Result 623 states and 1831 transitions. [2021-03-11 14:37:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:22,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:22,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:22,933 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:37:22,933 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:37:22,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:22,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:37:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 395. [2021-03-11 14:37:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.464467005076142) internal successors, (1365), 394 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1365 transitions. [2021-03-11 14:37:22,939 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:22,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:22,939 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1365 transitions. [2021-03-11 14:37:22,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1365 transitions. [2021-03-11 14:37:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:22,940 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:22,940 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:22,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable644 [2021-03-11 14:37:22,940 INFO L428 AbstractCegarLoop]: === Iteration 646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -497660185, now seen corresponding path program 640 times [2021-03-11 14:37:22,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:22,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541787129] [2021-03-11 14:37:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:22,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:22,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:22,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:22,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:22,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:22,967 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:22,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:22,985 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:22,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:23,009 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:23,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:23,040 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:23,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:23,067 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:23,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:23,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541787129] [2021-03-11 14:37:23,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:23,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:23,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416963419] [2021-03-11 14:37:23,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:23,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:23,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:23,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:23,093 INFO L87 Difference]: Start difference. First operand 395 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:23,163 INFO L93 Difference]: Finished difference Result 630 states and 1843 transitions. [2021-03-11 14:37:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:23,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:23,164 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:37:23,164 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:37:23,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:37:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 393. [2021-03-11 14:37:23,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4693877551020407) internal successors, (1360), 392 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1360 transitions. [2021-03-11 14:37:23,170 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:23,171 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1360 transitions. [2021-03-11 14:37:23,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,171 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1360 transitions. [2021-03-11 14:37:23,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:23,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:23,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:23,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable645 [2021-03-11 14:37:23,171 INFO L428 AbstractCegarLoop]: === Iteration 647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 61201601, now seen corresponding path program 641 times [2021-03-11 14:37:23,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:23,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261961004] [2021-03-11 14:37:23,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:23,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:23,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:23,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:23,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:23,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:23,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:23,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:23,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:23,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:23,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:23,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:23,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:23,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261961004] [2021-03-11 14:37:23,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:23,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:23,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777931604] [2021-03-11 14:37:23,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:23,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:23,315 INFO L87 Difference]: Start difference. First operand 393 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:23,412 INFO L93 Difference]: Finished difference Result 639 states and 1865 transitions. [2021-03-11 14:37:23,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:23,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:23,414 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:37:23,414 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:37:23,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:37:23,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 401. [2021-03-11 14:37:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.435) internal successors, (1374), 400 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1374 transitions. [2021-03-11 14:37:23,420 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1374 transitions. Word has length 22 [2021-03-11 14:37:23,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:23,420 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1374 transitions. [2021-03-11 14:37:23,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1374 transitions. [2021-03-11 14:37:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:23,421 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:23,421 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:23,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable646 [2021-03-11 14:37:23,421 INFO L428 AbstractCegarLoop]: === Iteration 648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:23,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:23,421 INFO L82 PathProgramCache]: Analyzing trace with hash 596431403, now seen corresponding path program 642 times [2021-03-11 14:37:23,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:23,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752880143] [2021-03-11 14:37:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:23,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:23,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:23,433 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:23,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:23,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:23,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:23,467 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:23,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:23,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:23,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:23,513 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:23,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:23,540 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:23,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:23,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752880143] [2021-03-11 14:37:23,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:23,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:23,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207284890] [2021-03-11 14:37:23,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:23,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:23,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:23,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:23,566 INFO L87 Difference]: Start difference. First operand 401 states and 1374 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:23,638 INFO L93 Difference]: Finished difference Result 641 states and 1862 transitions. [2021-03-11 14:37:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:23,640 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:37:23,640 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:37:23,640 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:37:23,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 390. [2021-03-11 14:37:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.475578406169666) internal successors, (1352), 389 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1352 transitions. [2021-03-11 14:37:23,646 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:23,646 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1352 transitions. [2021-03-11 14:37:23,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1352 transitions. [2021-03-11 14:37:23,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:23,647 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:23,647 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:23,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647 [2021-03-11 14:37:23,647 INFO L428 AbstractCegarLoop]: === Iteration 649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:23,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1730489399, now seen corresponding path program 643 times [2021-03-11 14:37:23,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:23,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434566083] [2021-03-11 14:37:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:23,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:23,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:23,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:23,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:23,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:23,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:23,693 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:23,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:23,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:23,757 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:23,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:23,784 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:23,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:23,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434566083] [2021-03-11 14:37:23,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:23,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:23,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912868464] [2021-03-11 14:37:23,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:23,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:23,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:23,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:23,810 INFO L87 Difference]: Start difference. First operand 390 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:23,899 INFO L93 Difference]: Finished difference Result 627 states and 1843 transitions. [2021-03-11 14:37:23,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:23,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:23,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:23,900 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:37:23,900 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:37:23,901 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:23,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:37:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 396. [2021-03-11 14:37:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.460759493670886) internal successors, (1367), 395 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1367 transitions. [2021-03-11 14:37:23,907 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:23,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:23,907 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1367 transitions. [2021-03-11 14:37:23,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1367 transitions. [2021-03-11 14:37:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:23,907 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:23,907 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:23,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable648 [2021-03-11 14:37:23,908 INFO L428 AbstractCegarLoop]: === Iteration 650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:23,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:23,908 INFO L82 PathProgramCache]: Analyzing trace with hash -119548441, now seen corresponding path program 644 times [2021-03-11 14:37:23,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:23,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130262356] [2021-03-11 14:37:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:23,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:23,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:23,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:23,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:23,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:23,934 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:23,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:23,953 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:23,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:23,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:23,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:24,010 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:24,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:24,037 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:24,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:24,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130262356] [2021-03-11 14:37:24,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:24,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:24,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657836892] [2021-03-11 14:37:24,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:24,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:24,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:24,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:24,063 INFO L87 Difference]: Start difference. First operand 396 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:24,142 INFO L93 Difference]: Finished difference Result 631 states and 1849 transitions. [2021-03-11 14:37:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:24,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:24,143 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:37:24,143 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:37:24,144 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 181.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:24,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:37:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 394. [2021-03-11 14:37:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4656488549618323) internal successors, (1362), 393 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1362 transitions. [2021-03-11 14:37:24,150 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:24,150 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1362 transitions. [2021-03-11 14:37:24,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1362 transitions. [2021-03-11 14:37:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:24,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:24,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:24,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable649 [2021-03-11 14:37:24,150 INFO L428 AbstractCegarLoop]: === Iteration 651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1976732575, now seen corresponding path program 645 times [2021-03-11 14:37:24,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:24,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083467374] [2021-03-11 14:37:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:24,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:24,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:24,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:24,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:24,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:24,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:24,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:24,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:24,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:24,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:24,255 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:24,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:24,283 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:24,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:24,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083467374] [2021-03-11 14:37:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:24,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:24,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402851750] [2021-03-11 14:37:24,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:24,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:24,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:24,311 INFO L87 Difference]: Start difference. First operand 394 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:24,408 INFO L93 Difference]: Finished difference Result 630 states and 1846 transitions. [2021-03-11 14:37:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:24,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:24,409 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:37:24,409 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:37:24,410 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:37:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 397. [2021-03-11 14:37:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.452020202020202) internal successors, (1367), 396 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1367 transitions. [2021-03-11 14:37:24,416 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:24,416 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1367 transitions. [2021-03-11 14:37:24,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1367 transitions. [2021-03-11 14:37:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:24,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:24,417 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:24,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable650 [2021-03-11 14:37:24,417 INFO L428 AbstractCegarLoop]: === Iteration 652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash -172063961, now seen corresponding path program 646 times [2021-03-11 14:37:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:24,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545365460] [2021-03-11 14:37:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:24,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:24,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:24,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:24,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:24,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:24,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:24,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:24,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:24,491 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:24,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:24,524 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:24,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:24,554 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:24,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:24,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:24,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545365460] [2021-03-11 14:37:24,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:24,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:24,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257291219] [2021-03-11 14:37:24,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:24,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:24,582 INFO L87 Difference]: Start difference. First operand 397 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:24,651 INFO L93 Difference]: Finished difference Result 636 states and 1855 transitions. [2021-03-11 14:37:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:24,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:24,652 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:37:24,652 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:37:24,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:24,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:37:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 394. [2021-03-11 14:37:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4580152671755724) internal successors, (1359), 393 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1359 transitions. [2021-03-11 14:37:24,659 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:24,659 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1359 transitions. [2021-03-11 14:37:24,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1359 transitions. [2021-03-11 14:37:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:24,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:24,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:24,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable651 [2021-03-11 14:37:24,659 INFO L428 AbstractCegarLoop]: === Iteration 653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:24,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1987235679, now seen corresponding path program 647 times [2021-03-11 14:37:24,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:24,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880358449] [2021-03-11 14:37:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:24,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:24,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:24,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:24,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:24,686 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:24,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:24,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:24,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:24,730 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:24,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:24,752 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:24,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:24,779 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:24,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:24,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880358449] [2021-03-11 14:37:24,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:24,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:24,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032386233] [2021-03-11 14:37:24,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:24,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:24,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:24,805 INFO L87 Difference]: Start difference. First operand 394 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:24,898 INFO L93 Difference]: Finished difference Result 643 states and 1872 transitions. [2021-03-11 14:37:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:24,899 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:37:24,899 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:37:24,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:37:24,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 402. [2021-03-11 14:37:24,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.423940149625935) internal successors, (1373), 401 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1373 transitions. [2021-03-11 14:37:24,906 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:24,906 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1373 transitions. [2021-03-11 14:37:24,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1373 transitions. [2021-03-11 14:37:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:24,906 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:24,906 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:24,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable652 [2021-03-11 14:37:24,906 INFO L428 AbstractCegarLoop]: === Iteration 654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1772501815, now seen corresponding path program 648 times [2021-03-11 14:37:24,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:24,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677262414] [2021-03-11 14:37:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:24,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:24,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:24,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:24,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:24,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:24,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:24,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:24,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:24,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:24,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:24,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:25,002 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:25,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:25,029 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:25,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:25,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677262414] [2021-03-11 14:37:25,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:25,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:25,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962858765] [2021-03-11 14:37:25,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:25,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:25,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:25,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:25,055 INFO L87 Difference]: Start difference. First operand 402 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:25,121 INFO L93 Difference]: Finished difference Result 645 states and 1869 transitions. [2021-03-11 14:37:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:25,122 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:37:25,122 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:37:25,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 152.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:25,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:37:25,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 387. [2021-03-11 14:37:25,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.481865284974093) internal successors, (1344), 386 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1344 transitions. [2021-03-11 14:37:25,129 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1344 transitions. Word has length 22 [2021-03-11 14:37:25,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:25,129 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1344 transitions. [2021-03-11 14:37:25,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1344 transitions. [2021-03-11 14:37:25,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:25,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:25,129 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:25,129 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable653 [2021-03-11 14:37:25,129 INFO L428 AbstractCegarLoop]: === Iteration 655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:25,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:25,130 INFO L82 PathProgramCache]: Analyzing trace with hash 911224769, now seen corresponding path program 649 times [2021-03-11 14:37:25,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:25,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422361981] [2021-03-11 14:37:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:25,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:25,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:25,141 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:25,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:25,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:25,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:25,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:25,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:25,206 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:25,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:25,227 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:25,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:25,255 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:25,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:25,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422361981] [2021-03-11 14:37:25,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:25,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:25,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325659618] [2021-03-11 14:37:25,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:25,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:25,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:25,281 INFO L87 Difference]: Start difference. First operand 387 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:25,358 INFO L93 Difference]: Finished difference Result 594 states and 1771 transitions. [2021-03-11 14:37:25,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:25,359 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:37:25,359 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:37:25,359 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:37:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 391. [2021-03-11 14:37:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.476923076923077) internal successors, (1356), 390 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1356 transitions. [2021-03-11 14:37:25,365 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:25,365 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1356 transitions. [2021-03-11 14:37:25,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1356 transitions. [2021-03-11 14:37:25,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:25,366 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:25,366 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:25,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable654 [2021-03-11 14:37:25,366 INFO L428 AbstractCegarLoop]: === Iteration 656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1772801569, now seen corresponding path program 650 times [2021-03-11 14:37:25,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:25,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358505632] [2021-03-11 14:37:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:25,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:25,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:25,378 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:25,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:25,393 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:25,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:25,414 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:25,442 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:25,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:25,465 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:25,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:25,491 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:25,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:25,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:25,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358505632] [2021-03-11 14:37:25,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:25,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:25,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365467810] [2021-03-11 14:37:25,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:25,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:25,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:25,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:25,517 INFO L87 Difference]: Start difference. First operand 391 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:25,601 INFO L93 Difference]: Finished difference Result 595 states and 1772 transitions. [2021-03-11 14:37:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:25,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:25,603 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:37:25,603 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:37:25,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:37:25,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 390. [2021-03-11 14:37:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.480719794344473) internal successors, (1354), 389 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1354 transitions. [2021-03-11 14:37:25,609 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:25,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:25,609 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1354 transitions. [2021-03-11 14:37:25,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1354 transitions. [2021-03-11 14:37:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:25,610 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:25,610 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:25,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable655 [2021-03-11 14:37:25,610 INFO L428 AbstractCegarLoop]: === Iteration 657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:25,610 INFO L82 PathProgramCache]: Analyzing trace with hash 323479447, now seen corresponding path program 651 times [2021-03-11 14:37:25,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:25,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565723253] [2021-03-11 14:37:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:25,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:25,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:25,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:25,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:25,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:25,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:25,661 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:25,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:25,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:25,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:25,730 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:25,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:25,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:25,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:25,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565723253] [2021-03-11 14:37:25,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:25,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:25,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533232393] [2021-03-11 14:37:25,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:25,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:25,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:25,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:25,790 INFO L87 Difference]: Start difference. First operand 390 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:25,866 INFO L93 Difference]: Finished difference Result 597 states and 1776 transitions. [2021-03-11 14:37:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:25,868 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:37:25,868 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:37:25,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:25,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:37:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 391. [2021-03-11 14:37:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4743589743589745) internal successors, (1355), 390 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1355 transitions. [2021-03-11 14:37:25,875 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:25,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:25,875 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1355 transitions. [2021-03-11 14:37:25,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1355 transitions. [2021-03-11 14:37:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:25,875 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:25,875 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:25,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable656 [2021-03-11 14:37:25,875 INFO L428 AbstractCegarLoop]: === Iteration 658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:25,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1825317089, now seen corresponding path program 652 times [2021-03-11 14:37:25,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:25,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313727562] [2021-03-11 14:37:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:25,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:25,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:25,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:25,888 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:25,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:25,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:25,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:25,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:25,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:25,957 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:25,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:25,989 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:25,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:26,015 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:26,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:26,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313727562] [2021-03-11 14:37:26,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:26,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:26,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056018398] [2021-03-11 14:37:26,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:26,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:26,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:26,041 INFO L87 Difference]: Start difference. First operand 391 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:26,136 INFO L93 Difference]: Finished difference Result 601 states and 1783 transitions. [2021-03-11 14:37:26,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:26,137 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:26,137 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:37:26,137 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:37:26,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 390. [2021-03-11 14:37:26,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4781491002570695) internal successors, (1353), 389 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1353 transitions. [2021-03-11 14:37:26,144 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1353 transitions. Word has length 22 [2021-03-11 14:37:26,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:26,144 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1353 transitions. [2021-03-11 14:37:26,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,144 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1353 transitions. [2021-03-11 14:37:26,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:26,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:26,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:26,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable657 [2021-03-11 14:37:26,144 INFO L428 AbstractCegarLoop]: === Iteration 659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:26,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:26,144 INFO L82 PathProgramCache]: Analyzing trace with hash 333982551, now seen corresponding path program 653 times [2021-03-11 14:37:26,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:26,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287266445] [2021-03-11 14:37:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:26,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:26,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:26,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:26,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:26,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:26,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:26,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:26,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:26,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:26,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:26,256 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:26,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:26,283 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:26,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:26,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287266445] [2021-03-11 14:37:26,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:26,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:26,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301567913] [2021-03-11 14:37:26,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:26,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:26,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:26,309 INFO L87 Difference]: Start difference. First operand 390 states and 1353 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:26,396 INFO L93 Difference]: Finished difference Result 600 states and 1782 transitions. [2021-03-11 14:37:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:26,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:26,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:26,398 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:37:26,398 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:37:26,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:37:26,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 392. [2021-03-11 14:37:26,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4680306905370846) internal successors, (1356), 391 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1356 transitions. [2021-03-11 14:37:26,404 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:26,404 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1356 transitions. [2021-03-11 14:37:26,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,404 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1356 transitions. [2021-03-11 14:37:26,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:26,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:26,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:26,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable658 [2021-03-11 14:37:26,405 INFO L428 AbstractCegarLoop]: === Iteration 660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:26,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:26,405 INFO L82 PathProgramCache]: Analyzing trace with hash 869212353, now seen corresponding path program 654 times [2021-03-11 14:37:26,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:26,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115285767] [2021-03-11 14:37:26,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:26,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:26,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:26,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:26,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:26,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:26,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:26,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:26,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:26,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:26,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:26,517 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:26,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:26,543 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:26,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:26,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115285767] [2021-03-11 14:37:26,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:26,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:26,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39561296] [2021-03-11 14:37:26,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:26,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:26,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:26,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:26,569 INFO L87 Difference]: Start difference. First operand 392 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:26,664 INFO L93 Difference]: Finished difference Result 603 states and 1786 transitions. [2021-03-11 14:37:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:26,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:26,666 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:37:26,666 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:37:26,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:37:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 389. [2021-03-11 14:37:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.481958762886598) internal successors, (1351), 388 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1351 transitions. [2021-03-11 14:37:26,672 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1351 transitions. Word has length 22 [2021-03-11 14:37:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:26,672 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1351 transitions. [2021-03-11 14:37:26,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,672 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1351 transitions. [2021-03-11 14:37:26,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:26,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:26,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:26,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable659 [2021-03-11 14:37:26,673 INFO L428 AbstractCegarLoop]: === Iteration 661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:26,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:26,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1457708449, now seen corresponding path program 655 times [2021-03-11 14:37:26,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:26,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197553019] [2021-03-11 14:37:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:26,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:26,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:26,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:26,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:26,700 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:26,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:26,721 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:26,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:26,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:26,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:26,767 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:26,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:26,794 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:26,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:26,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197553019] [2021-03-11 14:37:26,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:26,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:26,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072388925] [2021-03-11 14:37:26,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:26,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:26,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:26,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:26,821 INFO L87 Difference]: Start difference. First operand 389 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:26,897 INFO L93 Difference]: Finished difference Result 600 states and 1782 transitions. [2021-03-11 14:37:26,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:26,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:26,899 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:37:26,899 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:26,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:26,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 392. [2021-03-11 14:37:26,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.473145780051151) internal successors, (1358), 391 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1358 transitions. [2021-03-11 14:37:26,905 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1358 transitions. Word has length 22 [2021-03-11 14:37:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:26,905 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1358 transitions. [2021-03-11 14:37:26,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1358 transitions. [2021-03-11 14:37:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:26,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:26,905 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:26,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable660 [2021-03-11 14:37:26,905 INFO L428 AbstractCegarLoop]: === Iteration 662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:26,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:26,906 INFO L82 PathProgramCache]: Analyzing trace with hash 153232509, now seen corresponding path program 656 times [2021-03-11 14:37:26,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:26,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169257432] [2021-03-11 14:37:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:26,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:26,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:26,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:26,917 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:26,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:26,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:26,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:26,953 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:26,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:26,977 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:26,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:26,999 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:27,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:27,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:27,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:27,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169257432] [2021-03-11 14:37:27,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:27,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:27,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077692605] [2021-03-11 14:37:27,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:27,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:27,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:27,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:27,052 INFO L87 Difference]: Start difference. First operand 392 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:27,144 INFO L93 Difference]: Finished difference Result 601 states and 1783 transitions. [2021-03-11 14:37:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:27,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:27,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:27,146 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:27,146 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:37:27,146 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:37:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 391. [2021-03-11 14:37:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.476923076923077) internal successors, (1356), 390 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1356 transitions. [2021-03-11 14:37:27,152 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:27,152 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1356 transitions. [2021-03-11 14:37:27,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1356 transitions. [2021-03-11 14:37:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:27,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:27,153 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:27,153 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable661 [2021-03-11 14:37:27,153 INFO L428 AbstractCegarLoop]: === Iteration 663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:27,153 INFO L82 PathProgramCache]: Analyzing trace with hash 649075671, now seen corresponding path program 657 times [2021-03-11 14:37:27,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:27,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183890754] [2021-03-11 14:37:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:27,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:27,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:27,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:27,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:27,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:27,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:27,204 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:27,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:27,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:27,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:27,259 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:27,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:27,286 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:27,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:27,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183890754] [2021-03-11 14:37:27,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:27,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:27,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580265973] [2021-03-11 14:37:27,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:27,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:27,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:27,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:27,316 INFO L87 Difference]: Start difference. First operand 391 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:27,380 INFO L93 Difference]: Finished difference Result 607 states and 1794 transitions. [2021-03-11 14:37:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:27,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:27,382 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:37:27,382 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:37:27,382 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 169.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:27,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:37:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 393. [2021-03-11 14:37:27,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4668367346938775) internal successors, (1359), 392 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1359 transitions. [2021-03-11 14:37:27,388 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:27,388 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1359 transitions. [2021-03-11 14:37:27,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1359 transitions. [2021-03-11 14:37:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:27,389 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:27,389 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:27,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable662 [2021-03-11 14:37:27,389 INFO L428 AbstractCegarLoop]: === Iteration 664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:27,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:27,389 INFO L82 PathProgramCache]: Analyzing trace with hash 111220093, now seen corresponding path program 658 times [2021-03-11 14:37:27,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:27,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892374645] [2021-03-11 14:37:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:27,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:27,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:27,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:27,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:27,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:27,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:27,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:27,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:27,461 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:27,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:27,492 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:27,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:27,519 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:27,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:27,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892374645] [2021-03-11 14:37:27,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:27,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:27,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858945538] [2021-03-11 14:37:27,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:27,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:27,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:27,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:27,545 INFO L87 Difference]: Start difference. First operand 393 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:27,620 INFO L93 Difference]: Finished difference Result 614 states and 1806 transitions. [2021-03-11 14:37:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:27,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:27,621 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:37:27,621 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:37:27,621 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:37:27,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 391. [2021-03-11 14:37:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.471794871794872) internal successors, (1354), 390 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1354 transitions. [2021-03-11 14:37:27,627 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:27,627 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1354 transitions. [2021-03-11 14:37:27,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1354 transitions. [2021-03-11 14:37:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:27,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:27,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:27,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable663 [2021-03-11 14:37:27,628 INFO L428 AbstractCegarLoop]: === Iteration 665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:27,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:27,628 INFO L82 PathProgramCache]: Analyzing trace with hash 659578775, now seen corresponding path program 659 times [2021-03-11 14:37:27,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:27,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549211083] [2021-03-11 14:37:27,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:27,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:27,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:27,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:27,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:27,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:27,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:27,676 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:27,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:27,700 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:27,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:27,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:27,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:27,758 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:27,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549211083] [2021-03-11 14:37:27,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:27,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:27,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971776364] [2021-03-11 14:37:27,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:27,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:27,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:27,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:27,784 INFO L87 Difference]: Start difference. First operand 391 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:27,880 INFO L93 Difference]: Finished difference Result 610 states and 1799 transitions. [2021-03-11 14:37:27,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:27,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:27,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:27,882 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:37:27,882 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:37:27,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:37:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 394. [2021-03-11 14:37:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4580152671755724) internal successors, (1359), 393 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1359 transitions. [2021-03-11 14:37:27,888 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:27,888 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1359 transitions. [2021-03-11 14:37:27,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1359 transitions. [2021-03-11 14:37:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:27,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:27,889 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:27,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable664 [2021-03-11 14:37:27,889 INFO L428 AbstractCegarLoop]: === Iteration 666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:27,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1489217761, now seen corresponding path program 660 times [2021-03-11 14:37:27,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:27,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583758186] [2021-03-11 14:37:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:27,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:27,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:27,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:27,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:27,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:27,916 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:27,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:27,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:27,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:27,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:27,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:27,993 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:27,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:28,020 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:28,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:28,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583758186] [2021-03-11 14:37:28,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:28,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551556180] [2021-03-11 14:37:28,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:28,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:28,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:28,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:28,047 INFO L87 Difference]: Start difference. First operand 394 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:28,120 INFO L93 Difference]: Finished difference Result 616 states and 1808 transitions. [2021-03-11 14:37:28,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:28,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:28,121 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:37:28,121 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:28,121 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:28,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 389. [2021-03-11 14:37:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4768041237113403) internal successors, (1349), 388 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1349 transitions. [2021-03-11 14:37:28,128 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1349 transitions. Word has length 22 [2021-03-11 14:37:28,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:28,128 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1349 transitions. [2021-03-11 14:37:28,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1349 transitions. [2021-03-11 14:37:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:28,128 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:28,128 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:28,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable665 [2021-03-11 14:37:28,128 INFO L428 AbstractCegarLoop]: === Iteration 667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:28,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1209277727, now seen corresponding path program 661 times [2021-03-11 14:37:28,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:28,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874809311] [2021-03-11 14:37:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:28,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:28,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:28,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:28,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:28,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:28,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:28,177 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:28,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:28,202 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:28,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:28,234 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:28,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:28,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:28,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:28,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874809311] [2021-03-11 14:37:28,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:28,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:28,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594701918] [2021-03-11 14:37:28,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:28,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:28,288 INFO L87 Difference]: Start difference. First operand 389 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:28,363 INFO L93 Difference]: Finished difference Result 609 states and 1801 transitions. [2021-03-11 14:37:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:28,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:28,364 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:37:28,364 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:37:28,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:37:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 392. [2021-03-11 14:37:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4680306905370846) internal successors, (1356), 391 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1356 transitions. [2021-03-11 14:37:28,371 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:28,371 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1356 transitions. [2021-03-11 14:37:28,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1356 transitions. [2021-03-11 14:37:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:28,371 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:28,371 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:28,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable666 [2021-03-11 14:37:28,371 INFO L428 AbstractCegarLoop]: === Iteration 668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:28,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:28,371 INFO L82 PathProgramCache]: Analyzing trace with hash -939518809, now seen corresponding path program 662 times [2021-03-11 14:37:28,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:28,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795402570] [2021-03-11 14:37:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:28,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:28,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:28,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:28,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:28,398 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:28,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:28,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:28,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:28,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:28,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:28,481 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:28,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:28,507 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:28,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:28,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795402570] [2021-03-11 14:37:28,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:28,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:28,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154143051] [2021-03-11 14:37:28,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:28,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:28,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:28,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:28,533 INFO L87 Difference]: Start difference. First operand 392 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:28,625 INFO L93 Difference]: Finished difference Result 613 states and 1808 transitions. [2021-03-11 14:37:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:28,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:28,627 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:37:28,627 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:37:28,627 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:37:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 391. [2021-03-11 14:37:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.471794871794872) internal successors, (1354), 390 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1354 transitions. [2021-03-11 14:37:28,633 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:28,633 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1354 transitions. [2021-03-11 14:37:28,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1354 transitions. [2021-03-11 14:37:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:28,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:28,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:28,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable667 [2021-03-11 14:37:28,634 INFO L428 AbstractCegarLoop]: === Iteration 669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:28,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:28,634 INFO L82 PathProgramCache]: Analyzing trace with hash -391160127, now seen corresponding path program 663 times [2021-03-11 14:37:28,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:28,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212707987] [2021-03-11 14:37:28,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:28,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:28,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:28,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:28,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:28,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:28,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:28,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:28,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:28,707 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:28,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:28,737 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:28,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:28,765 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:28,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:28,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212707987] [2021-03-11 14:37:28,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:28,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:28,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933092364] [2021-03-11 14:37:28,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:28,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:28,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:28,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:28,791 INFO L87 Difference]: Start difference. First operand 391 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:28,867 INFO L93 Difference]: Finished difference Result 613 states and 1807 transitions. [2021-03-11 14:37:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:28,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:28,869 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:37:28,869 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:37:28,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:37:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 393. [2021-03-11 14:37:28,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.461734693877551) internal successors, (1357), 392 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1357 transitions. [2021-03-11 14:37:28,875 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1357 transitions. Word has length 22 [2021-03-11 14:37:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:28,875 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1357 transitions. [2021-03-11 14:37:28,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1357 transitions. [2021-03-11 14:37:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:28,876 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:28,876 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:28,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable668 [2021-03-11 14:37:28,876 INFO L428 AbstractCegarLoop]: === Iteration 670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:28,876 INFO L82 PathProgramCache]: Analyzing trace with hash -929015705, now seen corresponding path program 664 times [2021-03-11 14:37:28,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:28,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166814226] [2021-03-11 14:37:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:28,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:28,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:28,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:28,889 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:28,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:28,905 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:28,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:28,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:28,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:28,953 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:28,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:28,986 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:28,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:29,015 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:29,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:29,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166814226] [2021-03-11 14:37:29,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:29,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:29,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686142922] [2021-03-11 14:37:29,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:29,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:29,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:29,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:29,044 INFO L87 Difference]: Start difference. First operand 393 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:29,130 INFO L93 Difference]: Finished difference Result 620 states and 1819 transitions. [2021-03-11 14:37:29,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:29,131 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:37:29,131 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:37:29,131 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:37:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 391. [2021-03-11 14:37:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.466666666666667) internal successors, (1352), 390 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1352 transitions. [2021-03-11 14:37:29,138 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:29,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:29,138 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1352 transitions. [2021-03-11 14:37:29,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,138 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1352 transitions. [2021-03-11 14:37:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:29,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:29,138 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:29,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable669 [2021-03-11 14:37:29,138 INFO L428 AbstractCegarLoop]: === Iteration 671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:29,139 INFO L82 PathProgramCache]: Analyzing trace with hash -433172543, now seen corresponding path program 665 times [2021-03-11 14:37:29,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:29,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3381210] [2021-03-11 14:37:29,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:29,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:29,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:29,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:29,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:29,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:29,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:29,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:29,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:29,224 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:29,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:29,246 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:29,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:29,273 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:29,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:29,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3381210] [2021-03-11 14:37:29,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:29,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:29,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609365270] [2021-03-11 14:37:29,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:29,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:29,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:29,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:29,299 INFO L87 Difference]: Start difference. First operand 391 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:29,390 INFO L93 Difference]: Finished difference Result 625 states and 1833 transitions. [2021-03-11 14:37:29,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:29,392 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:37:29,392 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:37:29,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:29,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:37:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 397. [2021-03-11 14:37:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.441919191919192) internal successors, (1363), 396 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1363 transitions. [2021-03-11 14:37:29,398 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1363 transitions. Word has length 22 [2021-03-11 14:37:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:29,398 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1363 transitions. [2021-03-11 14:37:29,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,398 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1363 transitions. [2021-03-11 14:37:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:29,399 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:29,399 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:29,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable670 [2021-03-11 14:37:29,399 INFO L428 AbstractCegarLoop]: === Iteration 672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1177768415, now seen corresponding path program 666 times [2021-03-11 14:37:29,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:29,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592195290] [2021-03-11 14:37:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:29,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:29,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:29,411 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:29,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:29,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:29,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:29,449 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:29,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:29,474 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:29,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:29,496 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:29,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:29,524 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:29,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:29,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592195290] [2021-03-11 14:37:29,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:29,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:29,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648813842] [2021-03-11 14:37:29,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:29,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:29,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:29,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:29,551 INFO L87 Difference]: Start difference. First operand 397 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:29,621 INFO L93 Difference]: Finished difference Result 628 states and 1833 transitions. [2021-03-11 14:37:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:29,622 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:37:29,623 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:37:29,623 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:29,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:37:29,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 389. [2021-03-11 14:37:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4716494845360826) internal successors, (1347), 388 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1347 transitions. [2021-03-11 14:37:29,629 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1347 transitions. Word has length 22 [2021-03-11 14:37:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:29,629 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1347 transitions. [2021-03-11 14:37:29,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,629 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1347 transitions. [2021-03-11 14:37:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:29,629 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:29,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:29,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable671 [2021-03-11 14:37:29,630 INFO L428 AbstractCegarLoop]: === Iteration 673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1149152387, now seen corresponding path program 667 times [2021-03-11 14:37:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822705241] [2021-03-11 14:37:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:29,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:29,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:29,642 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:29,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:29,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:29,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:29,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:29,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:29,711 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:29,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:29,748 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:29,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:29,775 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:29,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:29,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822705241] [2021-03-11 14:37:29,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:29,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:29,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587583465] [2021-03-11 14:37:29,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:29,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:29,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:29,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:29,802 INFO L87 Difference]: Start difference. First operand 389 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:29,897 INFO L93 Difference]: Finished difference Result 616 states and 1818 transitions. [2021-03-11 14:37:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:29,898 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:37:29,898 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:37:29,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:37:29,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 394. [2021-03-11 14:37:29,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.460559796437659) internal successors, (1360), 393 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1360 transitions. [2021-03-11 14:37:29,905 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:29,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:29,905 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1360 transitions. [2021-03-11 14:37:29,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:29,905 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1360 transitions. [2021-03-11 14:37:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:29,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:29,905 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:29,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable672 [2021-03-11 14:37:29,905 INFO L428 AbstractCegarLoop]: === Iteration 674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:29,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:29,906 INFO L82 PathProgramCache]: Analyzing trace with hash -613922585, now seen corresponding path program 668 times [2021-03-11 14:37:29,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:29,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420553557] [2021-03-11 14:37:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:29,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:29,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:29,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:29,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:29,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:29,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:29,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:29,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:29,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:29,984 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:29,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:30,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:30,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:30,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:30,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420553557] [2021-03-11 14:37:30,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:30,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:30,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429069310] [2021-03-11 14:37:30,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:30,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:30,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:30,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:30,076 INFO L87 Difference]: Start difference. First operand 394 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:30,160 INFO L93 Difference]: Finished difference Result 619 states and 1822 transitions. [2021-03-11 14:37:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:30,162 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:37:30,162 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:37:30,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:30,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:37:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 392. [2021-03-11 14:37:30,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.465473145780051) internal successors, (1355), 391 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1355 transitions. [2021-03-11 14:37:30,168 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:30,168 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1355 transitions. [2021-03-11 14:37:30,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1355 transitions. [2021-03-11 14:37:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:30,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:30,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:30,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable673 [2021-03-11 14:37:30,169 INFO L428 AbstractCegarLoop]: === Iteration 675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:30,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:30,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1545377055, now seen corresponding path program 669 times [2021-03-11 14:37:30,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:30,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357902029] [2021-03-11 14:37:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:30,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:30,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:30,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:30,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:30,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:30,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:30,218 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:30,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:30,247 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:30,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:30,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:30,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:30,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:30,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:30,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357902029] [2021-03-11 14:37:30,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:30,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:30,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446375116] [2021-03-11 14:37:30,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:30,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:30,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:30,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:30,334 INFO L87 Difference]: Start difference. First operand 392 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:30,426 INFO L93 Difference]: Finished difference Result 620 states and 1823 transitions. [2021-03-11 14:37:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:30,428 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:37:30,428 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:37:30,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:30,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:37:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 395. [2021-03-11 14:37:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.451776649746193) internal successors, (1360), 394 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1360 transitions. [2021-03-11 14:37:30,435 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:30,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:30,435 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1360 transitions. [2021-03-11 14:37:30,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,435 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1360 transitions. [2021-03-11 14:37:30,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:30,435 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:30,435 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:30,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable674 [2021-03-11 14:37:30,435 INFO L428 AbstractCegarLoop]: === Iteration 676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:30,436 INFO L82 PathProgramCache]: Analyzing trace with hash -603419481, now seen corresponding path program 670 times [2021-03-11 14:37:30,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:30,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210289849] [2021-03-11 14:37:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:30,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:30,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:30,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:30,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:30,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:30,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:30,491 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:30,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:30,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:30,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:30,562 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:30,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:30,594 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:30,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:30,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210289849] [2021-03-11 14:37:30,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:30,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:30,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857198973] [2021-03-11 14:37:30,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:30,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:30,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:30,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:30,624 INFO L87 Difference]: Start difference. First operand 395 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:30,701 INFO L93 Difference]: Finished difference Result 626 states and 1832 transitions. [2021-03-11 14:37:30,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:30,702 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:37:30,702 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:37:30,702 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:30,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:37:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 392. [2021-03-11 14:37:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4578005115089514) internal successors, (1352), 391 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1352 transitions. [2021-03-11 14:37:30,708 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1352 transitions. Word has length 22 [2021-03-11 14:37:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:30,709 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1352 transitions. [2021-03-11 14:37:30,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1352 transitions. [2021-03-11 14:37:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:30,709 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:30,709 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:30,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable675 [2021-03-11 14:37:30,709 INFO L428 AbstractCegarLoop]: === Iteration 677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:30,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1492861535, now seen corresponding path program 671 times [2021-03-11 14:37:30,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:30,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516432321] [2021-03-11 14:37:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:30,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:30,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:30,722 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:30,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:30,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:30,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:30,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:30,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:30,788 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:30,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:30,810 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:30,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:30,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:30,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:30,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516432321] [2021-03-11 14:37:30,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:30,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:30,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345043052] [2021-03-11 14:37:30,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:30,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:30,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:30,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:30,864 INFO L87 Difference]: Start difference. First operand 392 states and 1352 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:30,951 INFO L93 Difference]: Finished difference Result 629 states and 1841 transitions. [2021-03-11 14:37:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:30,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:30,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:30,952 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:37:30,952 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:37:30,952 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:37:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 398. [2021-03-11 14:37:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.433249370277078) internal successors, (1363), 397 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1363 transitions. [2021-03-11 14:37:30,959 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1363 transitions. Word has length 22 [2021-03-11 14:37:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:30,959 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1363 transitions. [2021-03-11 14:37:30,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1363 transitions. [2021-03-11 14:37:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:30,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:30,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:30,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable676 [2021-03-11 14:37:30,959 INFO L428 AbstractCegarLoop]: === Iteration 678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:30,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1191164803, now seen corresponding path program 672 times [2021-03-11 14:37:30,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:30,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545953321] [2021-03-11 14:37:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:30,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:30,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:30,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:30,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:30,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:30,987 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:30,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:31,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:31,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:31,037 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:31,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:31,059 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:31,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:31,088 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:31,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:31,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545953321] [2021-03-11 14:37:31,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:31,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:31,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901326223] [2021-03-11 14:37:31,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:31,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:31,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:31,115 INFO L87 Difference]: Start difference. First operand 398 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:31,190 INFO L93 Difference]: Finished difference Result 632 states and 1841 transitions. [2021-03-11 14:37:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:31,192 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:37:31,192 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:37:31,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:31,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:37:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 387. [2021-03-11 14:37:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.476683937823834) internal successors, (1342), 386 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1342 transitions. [2021-03-11 14:37:31,198 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1342 transitions. Word has length 22 [2021-03-11 14:37:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:31,198 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1342 transitions. [2021-03-11 14:37:31,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1342 transitions. [2021-03-11 14:37:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:31,199 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:31,199 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:31,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable677 [2021-03-11 14:37:31,199 INFO L428 AbstractCegarLoop]: === Iteration 679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash 814335267, now seen corresponding path program 673 times [2021-03-11 14:37:31,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:31,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448341064] [2021-03-11 14:37:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:31,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:31,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:31,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:31,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:31,227 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:31,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:31,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:31,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:31,271 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:31,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:31,303 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:31,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:31,332 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:31,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:31,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448341064] [2021-03-11 14:37:31,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:31,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:31,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570692859] [2021-03-11 14:37:31,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:31,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:31,359 INFO L87 Difference]: Start difference. First operand 387 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:31,436 INFO L93 Difference]: Finished difference Result 625 states and 1846 transitions. [2021-03-11 14:37:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:31,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:31,438 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:37:31,438 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:37:31,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:37:31,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 393. [2021-03-11 14:37:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4668367346938775) internal successors, (1359), 392 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1359 transitions. [2021-03-11 14:37:31,444 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:31,444 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1359 transitions. [2021-03-11 14:37:31,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1359 transitions. [2021-03-11 14:37:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:31,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:31,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:31,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable678 [2021-03-11 14:37:31,445 INFO L428 AbstractCegarLoop]: === Iteration 680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:31,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:31,445 INFO L82 PathProgramCache]: Analyzing trace with hash -258750113, now seen corresponding path program 674 times [2021-03-11 14:37:31,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:31,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892746109] [2021-03-11 14:37:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:31,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:31,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:31,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:31,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:31,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:31,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:31,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:31,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:31,517 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:31,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:31,550 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:31,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:31,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:31,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:31,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892746109] [2021-03-11 14:37:31,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:31,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:31,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051480584] [2021-03-11 14:37:31,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:31,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:31,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:31,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:31,604 INFO L87 Difference]: Start difference. First operand 393 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:31,697 INFO L93 Difference]: Finished difference Result 630 states and 1855 transitions. [2021-03-11 14:37:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:31,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:31,698 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:37:31,698 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:37:31,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:31,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:37:31,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 392. [2021-03-11 14:37:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4705882352941178) internal successors, (1357), 391 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1357 transitions. [2021-03-11 14:37:31,705 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1357 transitions. Word has length 22 [2021-03-11 14:37:31,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:31,705 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1357 transitions. [2021-03-11 14:37:31,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1357 transitions. [2021-03-11 14:37:31,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:31,705 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:31,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:31,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable679 [2021-03-11 14:37:31,706 INFO L428 AbstractCegarLoop]: === Iteration 681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:31,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1827027799, now seen corresponding path program 675 times [2021-03-11 14:37:31,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:31,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685959158] [2021-03-11 14:37:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:31,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:31,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:31,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:31,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:31,734 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:31,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:31,753 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:31,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:31,779 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:31,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:31,813 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:31,842 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:31,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:31,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685959158] [2021-03-11 14:37:31,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:31,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:31,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704407546] [2021-03-11 14:37:31,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:31,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:31,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:31,868 INFO L87 Difference]: Start difference. First operand 392 states and 1357 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:31,938 INFO L93 Difference]: Finished difference Result 624 states and 1843 transitions. [2021-03-11 14:37:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:31,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:31,940 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:37:31,940 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:37:31,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:37:31,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 393. [2021-03-11 14:37:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4642857142857144) internal successors, (1358), 392 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1358 transitions. [2021-03-11 14:37:31,946 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1358 transitions. Word has length 22 [2021-03-11 14:37:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:31,947 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1358 transitions. [2021-03-11 14:37:31,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1358 transitions. [2021-03-11 14:37:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:31,947 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:31,947 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:31,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable680 [2021-03-11 14:37:31,947 INFO L428 AbstractCegarLoop]: === Iteration 682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:31,947 INFO L82 PathProgramCache]: Analyzing trace with hash -321768737, now seen corresponding path program 676 times [2021-03-11 14:37:31,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:31,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139741880] [2021-03-11 14:37:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:31,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:31,960 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:31,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:31,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:31,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:31,994 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:31,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:32,020 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:32,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:32,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:32,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:32,081 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:32,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:32,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139741880] [2021-03-11 14:37:32,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:32,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:32,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991015308] [2021-03-11 14:37:32,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:32,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:32,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:32,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:32,108 INFO L87 Difference]: Start difference. First operand 393 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:32,201 INFO L93 Difference]: Finished difference Result 628 states and 1850 transitions. [2021-03-11 14:37:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:32,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:32,203 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:37:32,203 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:37:32,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:32,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:37:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 392. [2021-03-11 14:37:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4680306905370846) internal successors, (1356), 391 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1356 transitions. [2021-03-11 14:37:32,209 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:32,209 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1356 transitions. [2021-03-11 14:37:32,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,209 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1356 transitions. [2021-03-11 14:37:32,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:32,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:32,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:32,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable681 [2021-03-11 14:37:32,210 INFO L428 AbstractCegarLoop]: === Iteration 683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1848034007, now seen corresponding path program 677 times [2021-03-11 14:37:32,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:32,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286220881] [2021-03-11 14:37:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:32,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:32,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:32,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:32,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:32,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:32,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:32,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:32,283 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:32,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:32,306 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:32,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:32,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:32,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:32,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286220881] [2021-03-11 14:37:32,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:32,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:32,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165243058] [2021-03-11 14:37:32,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:32,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:32,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:32,361 INFO L87 Difference]: Start difference. First operand 392 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:32,444 INFO L93 Difference]: Finished difference Result 638 states and 1874 transitions. [2021-03-11 14:37:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:32,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:32,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:32,445 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:37:32,445 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:37:32,446 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 178.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:37:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 397. [2021-03-11 14:37:32,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.446969696969697) internal successors, (1365), 396 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1365 transitions. [2021-03-11 14:37:32,452 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:32,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:32,452 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1365 transitions. [2021-03-11 14:37:32,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1365 transitions. [2021-03-11 14:37:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:32,452 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:32,452 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:32,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable682 [2021-03-11 14:37:32,453 INFO L428 AbstractCegarLoop]: === Iteration 684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:32,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:32,453 INFO L82 PathProgramCache]: Analyzing trace with hash 772322851, now seen corresponding path program 678 times [2021-03-11 14:37:32,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:32,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160639934] [2021-03-11 14:37:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:32,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:32,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:32,465 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:32,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:32,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:32,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:32,499 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:32,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:32,524 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:32,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:32,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:32,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:32,574 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:32,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:32,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160639934] [2021-03-11 14:37:32,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:32,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:32,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077331544] [2021-03-11 14:37:32,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:32,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:32,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:32,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:32,601 INFO L87 Difference]: Start difference. First operand 397 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:32,694 INFO L93 Difference]: Finished difference Result 637 states and 1867 transitions. [2021-03-11 14:37:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:32,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:32,696 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:37:32,696 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:37:32,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:37:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 391. [2021-03-11 14:37:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.471794871794872) internal successors, (1354), 390 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1354 transitions. [2021-03-11 14:37:32,702 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:32,702 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1354 transitions. [2021-03-11 14:37:32,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1354 transitions. [2021-03-11 14:37:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:32,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:32,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:32,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable683 [2021-03-11 14:37:32,703 INFO L428 AbstractCegarLoop]: === Iteration 685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:32,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1554597951, now seen corresponding path program 679 times [2021-03-11 14:37:32,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:32,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967422003] [2021-03-11 14:37:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:32,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:32,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:32,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:32,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:32,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:32,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:32,749 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:32,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:32,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:32,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:32,807 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:32,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:32,836 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:32,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:32,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967422003] [2021-03-11 14:37:32,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:32,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:32,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918087077] [2021-03-11 14:37:32,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:32,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:32,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:32,863 INFO L87 Difference]: Start difference. First operand 391 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:32,941 INFO L93 Difference]: Finished difference Result 634 states and 1863 transitions. [2021-03-11 14:37:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:32,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:32,943 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:37:32,943 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:37:32,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:37:32,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 395. [2021-03-11 14:37:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4593908629441623) internal successors, (1363), 394 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1363 transitions. [2021-03-11 14:37:32,949 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1363 transitions. Word has length 22 [2021-03-11 14:37:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:32,949 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1363 transitions. [2021-03-11 14:37:32,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1363 transitions. [2021-03-11 14:37:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:32,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:32,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:32,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable684 [2021-03-11 14:37:32,950 INFO L428 AbstractCegarLoop]: === Iteration 686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:32,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:32,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1667283965, now seen corresponding path program 680 times [2021-03-11 14:37:32,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:32,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150579323] [2021-03-11 14:37:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:32,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:32,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:32,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:32,962 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:32,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:32,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:32,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:32,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:32,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:33,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:33,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:33,054 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:33,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:33,082 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:33,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:33,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150579323] [2021-03-11 14:37:33,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:33,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:33,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237873128] [2021-03-11 14:37:33,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:33,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:33,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:33,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:33,109 INFO L87 Difference]: Start difference. First operand 395 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:33,201 INFO L93 Difference]: Finished difference Result 639 states and 1872 transitions. [2021-03-11 14:37:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:33,203 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:37:33,203 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:37:33,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:33,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:37:33,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 394. [2021-03-11 14:37:33,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4631043256997454) internal successors, (1361), 393 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1361 transitions. [2021-03-11 14:37:33,209 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:33,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:33,209 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1361 transitions. [2021-03-11 14:37:33,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1361 transitions. [2021-03-11 14:37:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:33,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:33,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:33,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable685 [2021-03-11 14:37:33,210 INFO L428 AbstractCegarLoop]: === Iteration 687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:33,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2142343273, now seen corresponding path program 681 times [2021-03-11 14:37:33,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:33,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708420038] [2021-03-11 14:37:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:33,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:33,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:33,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:33,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:33,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:33,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:33,257 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:33,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:33,282 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:33,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:33,314 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:33,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:33,346 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:33,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:33,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708420038] [2021-03-11 14:37:33,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:33,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:33,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371122372] [2021-03-11 14:37:33,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:33,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:33,373 INFO L87 Difference]: Start difference. First operand 394 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:33,439 INFO L93 Difference]: Finished difference Result 637 states and 1867 transitions. [2021-03-11 14:37:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:33,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:33,440 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:37:33,440 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:37:33,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:37:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 396. [2021-03-11 14:37:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4531645569620255) internal successors, (1364), 395 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1364 transitions. [2021-03-11 14:37:33,447 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:33,447 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1364 transitions. [2021-03-11 14:37:33,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1364 transitions. [2021-03-11 14:37:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:33,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:33,448 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:33,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable686 [2021-03-11 14:37:33,448 INFO L428 AbstractCegarLoop]: === Iteration 688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:33,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1614768445, now seen corresponding path program 682 times [2021-03-11 14:37:33,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:33,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241052767] [2021-03-11 14:37:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:33,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:33,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:33,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:33,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:33,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:33,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:33,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:33,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:33,521 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:33,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:33,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:33,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:33,581 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:33,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:33,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241052767] [2021-03-11 14:37:33,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:33,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:33,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22992675] [2021-03-11 14:37:33,608 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:33,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:33,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:33,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:33,608 INFO L87 Difference]: Start difference. First operand 396 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:33,683 INFO L93 Difference]: Finished difference Result 644 states and 1879 transitions. [2021-03-11 14:37:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:33,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:33,685 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:37:33,685 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:37:33,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 167.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:37:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 394. [2021-03-11 14:37:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4580152671755724) internal successors, (1359), 393 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1359 transitions. [2021-03-11 14:37:33,691 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:33,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:33,691 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1359 transitions. [2021-03-11 14:37:33,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1359 transitions. [2021-03-11 14:37:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:33,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:33,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:33,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable687 [2021-03-11 14:37:33,692 INFO L428 AbstractCegarLoop]: === Iteration 689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:33,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2121337065, now seen corresponding path program 683 times [2021-03-11 14:37:33,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:33,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630259102] [2021-03-11 14:37:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:33,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:33,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:33,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:33,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:33,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:33,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:33,739 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:33,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:33,764 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:33,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:33,787 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:33,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:33,815 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:33,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:33,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630259102] [2021-03-11 14:37:33,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:33,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:33,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839389950] [2021-03-11 14:37:33,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:33,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:33,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:33,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:33,842 INFO L87 Difference]: Start difference. First operand 394 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:33,948 INFO L93 Difference]: Finished difference Result 653 states and 1901 transitions. [2021-03-11 14:37:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:33,949 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:37:33,949 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:37:33,949 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:33,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:37:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 402. [2021-03-11 14:37:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.423940149625935) internal successors, (1373), 401 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1373 transitions. [2021-03-11 14:37:33,956 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:33,956 INFO L480 AbstractCegarLoop]: Abstraction has 402 states and 1373 transitions. [2021-03-11 14:37:33,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1373 transitions. [2021-03-11 14:37:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:33,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:33,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:33,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable688 [2021-03-11 14:37:33,957 INFO L428 AbstractCegarLoop]: === Iteration 690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:33,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1586107263, now seen corresponding path program 684 times [2021-03-11 14:37:33,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:33,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493990417] [2021-03-11 14:37:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:33,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:33,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:33,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:33,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:33,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:33,985 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:33,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:34,003 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:34,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:34,029 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:34,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:34,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:34,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:34,080 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:34,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493990417] [2021-03-11 14:37:34,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:34,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:34,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31693051] [2021-03-11 14:37:34,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:34,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:34,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:34,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:34,107 INFO L87 Difference]: Start difference. First operand 402 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:34,201 INFO L93 Difference]: Finished difference Result 655 states and 1898 transitions. [2021-03-11 14:37:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:34,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:34,203 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:37:34,203 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:37:34,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 162.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:34,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:37:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 391. [2021-03-11 14:37:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4641025641025642) internal successors, (1351), 390 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1351 transitions. [2021-03-11 14:37:34,210 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1351 transitions. Word has length 22 [2021-03-11 14:37:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:34,210 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1351 transitions. [2021-03-11 14:37:34,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1351 transitions. [2021-03-11 14:37:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:34,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:34,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:34,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable689 [2021-03-11 14:37:34,211 INFO L428 AbstractCegarLoop]: === Iteration 691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:34,211 INFO L82 PathProgramCache]: Analyzing trace with hash 786792001, now seen corresponding path program 685 times [2021-03-11 14:37:34,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:34,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970097665] [2021-03-11 14:37:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:34,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:34,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:34,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:34,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:34,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:34,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:34,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:34,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:34,290 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:34,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:34,324 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:34,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:34,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:34,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:34,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970097665] [2021-03-11 14:37:34,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:34,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:34,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717974353] [2021-03-11 14:37:34,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:34,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:34,380 INFO L87 Difference]: Start difference. First operand 391 states and 1351 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:34,471 INFO L93 Difference]: Finished difference Result 629 states and 1850 transitions. [2021-03-11 14:37:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:34,472 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:37:34,472 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:37:34,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:37:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 394. [2021-03-11 14:37:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.455470737913486) internal successors, (1358), 393 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1358 transitions. [2021-03-11 14:37:34,479 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1358 transitions. Word has length 22 [2021-03-11 14:37:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:34,479 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1358 transitions. [2021-03-11 14:37:34,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1358 transitions. [2021-03-11 14:37:34,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:34,479 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:34,479 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:34,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable690 [2021-03-11 14:37:34,479 INFO L428 AbstractCegarLoop]: === Iteration 692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:34,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:34,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1362004535, now seen corresponding path program 686 times [2021-03-11 14:37:34,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:34,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814813661] [2021-03-11 14:37:34,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:34,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:34,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:34,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:34,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:34,508 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:34,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:34,527 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:34,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:34,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:34,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:34,592 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:34,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:34,620 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:34,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:34,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814813661] [2021-03-11 14:37:34,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:34,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:34,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875511101] [2021-03-11 14:37:34,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:34,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:34,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:34,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:34,647 INFO L87 Difference]: Start difference. First operand 394 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:34,758 INFO L93 Difference]: Finished difference Result 633 states and 1857 transitions. [2021-03-11 14:37:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:34,760 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:37:34,760 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:37:34,760 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 196.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:37:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 393. [2021-03-11 14:37:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4591836734693877) internal successors, (1356), 392 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1356 transitions. [2021-03-11 14:37:34,766 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1356 transitions. Word has length 22 [2021-03-11 14:37:34,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:34,766 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1356 transitions. [2021-03-11 14:37:34,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1356 transitions. [2021-03-11 14:37:34,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:34,767 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:34,767 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:34,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable691 [2021-03-11 14:37:34,767 INFO L428 AbstractCegarLoop]: === Iteration 693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash -813645853, now seen corresponding path program 687 times [2021-03-11 14:37:34,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:34,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354497978] [2021-03-11 14:37:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:34,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:34,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:34,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:34,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:34,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:34,795 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:34,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:34,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:34,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:34,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:34,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:34,875 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:34,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:34,905 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:34,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:34,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354497978] [2021-03-11 14:37:34,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:34,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:34,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399261267] [2021-03-11 14:37:34,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:34,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:34,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:34,933 INFO L87 Difference]: Start difference. First operand 393 states and 1356 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:35,020 INFO L93 Difference]: Finished difference Result 633 states and 1856 transitions. [2021-03-11 14:37:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:35,022 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:37:35,022 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:37:35,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:35,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:37:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 395. [2021-03-11 14:37:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.449238578680203) internal successors, (1359), 394 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1359 transitions. [2021-03-11 14:37:35,029 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:35,029 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1359 transitions. [2021-03-11 14:37:35,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1359 transitions. [2021-03-11 14:37:35,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:35,029 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:35,029 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:35,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable692 [2021-03-11 14:37:35,029 INFO L428 AbstractCegarLoop]: === Iteration 694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:35,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1351501431, now seen corresponding path program 688 times [2021-03-11 14:37:35,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:35,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383367512] [2021-03-11 14:37:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:35,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:35,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:35,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:35,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:35,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:35,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:35,079 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:35,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:35,107 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:35,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:35,142 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:35,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:35,173 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:35,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383367512] [2021-03-11 14:37:35,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:35,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:35,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491018616] [2021-03-11 14:37:35,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:35,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:35,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:35,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:35,201 INFO L87 Difference]: Start difference. First operand 395 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:35,299 INFO L93 Difference]: Finished difference Result 640 states and 1868 transitions. [2021-03-11 14:37:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:35,300 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:37:35,300 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:37:35,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:37:35,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 393. [2021-03-11 14:37:35,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.454081632653061) internal successors, (1354), 392 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1354 transitions. [2021-03-11 14:37:35,307 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:35,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:35,307 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1354 transitions. [2021-03-11 14:37:35,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1354 transitions. [2021-03-11 14:37:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:35,307 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:35,307 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:35,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable693 [2021-03-11 14:37:35,308 INFO L428 AbstractCegarLoop]: === Iteration 695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:35,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:35,308 INFO L82 PathProgramCache]: Analyzing trace with hash -855658269, now seen corresponding path program 689 times [2021-03-11 14:37:35,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:35,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004849670] [2021-03-11 14:37:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:35,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:35,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:35,320 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:35,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:35,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:35,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:35,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:35,382 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:35,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:35,405 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:35,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:35,433 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:35,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:35,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004849670] [2021-03-11 14:37:35,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:35,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:35,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411496569] [2021-03-11 14:37:35,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:35,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:35,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:35,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:35,461 INFO L87 Difference]: Start difference. First operand 393 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:35,574 INFO L93 Difference]: Finished difference Result 645 states and 1882 transitions. [2021-03-11 14:37:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:35,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:35,575 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:37:35,575 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:37:35,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:35,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:37:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 399. [2021-03-11 14:37:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.42964824120603) internal successors, (1365), 398 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1365 transitions. [2021-03-11 14:37:35,582 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1365 transitions. Word has length 22 [2021-03-11 14:37:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:35,582 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1365 transitions. [2021-03-11 14:37:35,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1365 transitions. [2021-03-11 14:37:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:35,583 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:35,583 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:35,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable694 [2021-03-11 14:37:35,583 INFO L428 AbstractCegarLoop]: === Iteration 696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash 755282689, now seen corresponding path program 690 times [2021-03-11 14:37:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:35,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602808018] [2021-03-11 14:37:35,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:35,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:35,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:35,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:35,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:35,612 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:35,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:35,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:35,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:35,658 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:35,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:35,681 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:35,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:35,711 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:35,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:35,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602808018] [2021-03-11 14:37:35,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:35,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:35,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47210145] [2021-03-11 14:37:35,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:35,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:35,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:35,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:35,739 INFO L87 Difference]: Start difference. First operand 399 states and 1365 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:35,836 INFO L93 Difference]: Finished difference Result 648 states and 1882 transitions. [2021-03-11 14:37:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:35,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:35,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:35,837 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:37:35,837 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:37:35,838 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 164.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:35,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:37:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 391. [2021-03-11 14:37:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.458974358974359) internal successors, (1349), 390 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1349 transitions. [2021-03-11 14:37:35,844 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1349 transitions. Word has length 22 [2021-03-11 14:37:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:35,844 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1349 transitions. [2021-03-11 14:37:35,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1349 transitions. [2021-03-11 14:37:35,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:35,845 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:35,845 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:35,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable695 [2021-03-11 14:37:35,845 INFO L428 AbstractCegarLoop]: === Iteration 697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash 364899069, now seen corresponding path program 691 times [2021-03-11 14:37:35,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:35,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196936555] [2021-03-11 14:37:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:35,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:35,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:35,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:35,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:35,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:35,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:35,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:35,896 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:35,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:35,914 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:35,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:35,936 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:35,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:35,965 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:35,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:35,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196936555] [2021-03-11 14:37:35,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:35,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:35,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463190083] [2021-03-11 14:37:35,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:35,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:35,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:35,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:35,993 INFO L87 Difference]: Start difference. First operand 391 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:36,104 INFO L93 Difference]: Finished difference Result 664 states and 1937 transitions. [2021-03-11 14:37:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:36,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:36,106 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:37:36,106 INFO L226 Difference]: Without dead ends: 650 [2021-03-11 14:37:36,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-03-11 14:37:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 404. [2021-03-11 14:37:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.431761786600496) internal successors, (1383), 403 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1383 transitions. [2021-03-11 14:37:36,112 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1383 transitions. Word has length 22 [2021-03-11 14:37:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:36,113 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 1383 transitions. [2021-03-11 14:37:36,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,113 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1383 transitions. [2021-03-11 14:37:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:36,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:36,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:36,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable696 [2021-03-11 14:37:36,113 INFO L428 AbstractCegarLoop]: === Iteration 698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:36,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:36,113 INFO L82 PathProgramCache]: Analyzing trace with hash -710812087, now seen corresponding path program 692 times [2021-03-11 14:37:36,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:36,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950451878] [2021-03-11 14:37:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:36,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:36,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:36,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:36,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:36,142 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:36,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:36,161 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:36,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:36,179 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:36,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:36,201 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:36,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:36,229 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:36,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:36,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950451878] [2021-03-11 14:37:36,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:36,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:36,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84152107] [2021-03-11 14:37:36,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:36,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:36,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:36,257 INFO L87 Difference]: Start difference. First operand 404 states and 1383 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:36,368 INFO L93 Difference]: Finished difference Result 663 states and 1930 transitions. [2021-03-11 14:37:36,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:36,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:36,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:36,370 INFO L225 Difference]: With dead ends: 663 [2021-03-11 14:37:36,370 INFO L226 Difference]: Without dead ends: 645 [2021-03-11 14:37:36,370 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:36,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-03-11 14:37:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 399. [2021-03-11 14:37:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4396984924623117) internal successors, (1369), 398 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1369 transitions. [2021-03-11 14:37:36,376 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:36,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:36,376 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1369 transitions. [2021-03-11 14:37:36,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1369 transitions. [2021-03-11 14:37:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:36,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:36,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:36,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable697 [2021-03-11 14:37:36,377 INFO L428 AbstractCegarLoop]: === Iteration 699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:36,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:36,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1235538785, now seen corresponding path program 693 times [2021-03-11 14:37:36,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:36,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103956740] [2021-03-11 14:37:36,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:36,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:36,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:36,390 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:36,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:36,406 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:36,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:36,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:36,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:36,443 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:36,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:36,467 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:36,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:36,495 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:36,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103956740] [2021-03-11 14:37:36,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:36,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:36,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900651372] [2021-03-11 14:37:36,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:36,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:36,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:36,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:36,523 INFO L87 Difference]: Start difference. First operand 399 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:36,636 INFO L93 Difference]: Finished difference Result 670 states and 1943 transitions. [2021-03-11 14:37:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:36,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:36,637 INFO L225 Difference]: With dead ends: 670 [2021-03-11 14:37:36,637 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:37:36,637 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 174.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:36,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:37:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 407. [2021-03-11 14:37:36,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 3.4064039408866993) internal successors, (1383), 406 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1383 transitions. [2021-03-11 14:37:36,644 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1383 transitions. Word has length 22 [2021-03-11 14:37:36,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:36,644 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 1383 transitions. [2021-03-11 14:37:36,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1383 transitions. [2021-03-11 14:37:36,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:36,645 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:36,645 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:36,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable698 [2021-03-11 14:37:36,645 INFO L428 AbstractCegarLoop]: === Iteration 700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash -700308983, now seen corresponding path program 694 times [2021-03-11 14:37:36,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:36,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073363291] [2021-03-11 14:37:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:36,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:36,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:36,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:36,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:36,673 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:36,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:36,693 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:36,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:36,711 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:36,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:36,734 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:36,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:36,764 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:36,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:36,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073363291] [2021-03-11 14:37:36,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:36,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:36,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552480038] [2021-03-11 14:37:36,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:36,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:36,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:36,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:36,791 INFO L87 Difference]: Start difference. First operand 407 states and 1383 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:36,885 INFO L93 Difference]: Finished difference Result 672 states and 1940 transitions. [2021-03-11 14:37:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:36,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:36,887 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:37:36,887 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:37:36,887 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 155.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:37:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 399. [2021-03-11 14:37:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.422110552763819) internal successors, (1362), 398 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1362 transitions. [2021-03-11 14:37:36,894 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1362 transitions. Word has length 22 [2021-03-11 14:37:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:36,894 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1362 transitions. [2021-03-11 14:37:36,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:36,894 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1362 transitions. [2021-03-11 14:37:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:36,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:36,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:36,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable699 [2021-03-11 14:37:36,894 INFO L428 AbstractCegarLoop]: === Iteration 701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1298557409, now seen corresponding path program 695 times [2021-03-11 14:37:36,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:36,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191929614] [2021-03-11 14:37:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:36,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:36,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:36,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:36,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:36,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:36,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:36,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:36,943 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:36,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:36,960 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:36,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:36,983 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:36,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:37,011 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:37,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191929614] [2021-03-11 14:37:37,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:37,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:37,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885098883] [2021-03-11 14:37:37,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:37,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:37,039 INFO L87 Difference]: Start difference. First operand 399 states and 1362 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:37,155 INFO L93 Difference]: Finished difference Result 666 states and 1928 transitions. [2021-03-11 14:37:37,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:37,155 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:37,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:37,156 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:37:37,156 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:37:37,156 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:37:37,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 405. [2021-03-11 14:37:37,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.3985148514851486) internal successors, (1373), 404 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1373 transitions. [2021-03-11 14:37:37,163 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1373 transitions. Word has length 22 [2021-03-11 14:37:37,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:37,163 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 1373 transitions. [2021-03-11 14:37:37,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,163 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1373 transitions. [2021-03-11 14:37:37,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:37,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:37,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:37,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable700 [2021-03-11 14:37:37,164 INFO L428 AbstractCegarLoop]: === Iteration 702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:37,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash 312383549, now seen corresponding path program 696 times [2021-03-11 14:37:37,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:37,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813137048] [2021-03-11 14:37:37,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:37,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:37,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:37,176 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:37,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:37,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:37,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:37,212 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:37,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:37,229 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:37,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:37,252 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:37,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:37,283 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:37,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:37,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:37,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813137048] [2021-03-11 14:37:37,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:37,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:37,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998666492] [2021-03-11 14:37:37,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:37,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:37,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:37,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:37,312 INFO L87 Difference]: Start difference. First operand 405 states and 1373 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:37,406 INFO L93 Difference]: Finished difference Result 669 states and 1928 transitions. [2021-03-11 14:37:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:37,408 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:37:37,408 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:37:37,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 157.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:37,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:37:37,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 387. [2021-03-11 14:37:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.466321243523316) internal successors, (1338), 386 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1338 transitions. [2021-03-11 14:37:37,415 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1338 transitions. Word has length 22 [2021-03-11 14:37:37,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:37,415 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1338 transitions. [2021-03-11 14:37:37,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,415 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1338 transitions. [2021-03-11 14:37:37,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:37,416 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:37,416 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:37,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable701 [2021-03-11 14:37:37,416 INFO L428 AbstractCegarLoop]: === Iteration 703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:37,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:37,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1966580573, now seen corresponding path program 697 times [2021-03-11 14:37:37,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:37,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579658847] [2021-03-11 14:37:37,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:37,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:37,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:37,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:37,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:37,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:37,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:37,475 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:37,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:37,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:37,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:37,540 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:37,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:37,569 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:37,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579658847] [2021-03-11 14:37:37,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:37,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853307274] [2021-03-11 14:37:37,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:37,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:37,597 INFO L87 Difference]: Start difference. First operand 387 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:37,692 INFO L93 Difference]: Finished difference Result 640 states and 1889 transitions. [2021-03-11 14:37:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:37,693 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:37:37,693 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:37:37,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:37,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:37:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 396. [2021-03-11 14:37:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.458227848101266) internal successors, (1366), 395 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1366 transitions. [2021-03-11 14:37:37,700 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1366 transitions. Word has length 22 [2021-03-11 14:37:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:37,700 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1366 transitions. [2021-03-11 14:37:37,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1366 transitions. [2021-03-11 14:37:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:37,701 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:37,701 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:37,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable702 [2021-03-11 14:37:37,701 INFO L428 AbstractCegarLoop]: === Iteration 704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash -355639615, now seen corresponding path program 698 times [2021-03-11 14:37:37,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:37,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305206156] [2021-03-11 14:37:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:37,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:37,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:37,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:37,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:37,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:37,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:37,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:37,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:37,782 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:37,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:37,817 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:37,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:37,846 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:37,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:37,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:37,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305206156] [2021-03-11 14:37:37,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:37,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:37,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146438204] [2021-03-11 14:37:37,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:37,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:37,874 INFO L87 Difference]: Start difference. First operand 396 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:37,984 INFO L93 Difference]: Finished difference Result 644 states and 1895 transitions. [2021-03-11 14:37:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:37,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:37,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:37,986 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:37:37,986 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:37:37,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 202.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:37,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:37:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 394. [2021-03-11 14:37:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4631043256997454) internal successors, (1361), 393 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1361 transitions. [2021-03-11 14:37:37,993 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:37,993 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1361 transitions. [2021-03-11 14:37:37,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1361 transitions. [2021-03-11 14:37:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:37,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:37,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:37,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable703 [2021-03-11 14:37:37,993 INFO L428 AbstractCegarLoop]: === Iteration 705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash -953888041, now seen corresponding path program 699 times [2021-03-11 14:37:37,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:37,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940202103] [2021-03-11 14:37:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:38,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:38,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:38,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:38,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:38,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:38,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:38,045 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:38,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:38,075 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:38,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:38,113 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:38,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:38,142 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:38,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940202103] [2021-03-11 14:37:38,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:38,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:38,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240307112] [2021-03-11 14:37:38,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:38,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:38,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:38,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:38,171 INFO L87 Difference]: Start difference. First operand 394 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:38,281 INFO L93 Difference]: Finished difference Result 639 states and 1885 transitions. [2021-03-11 14:37:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:38,282 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:37:38,282 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:37:38,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 206.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:37:38,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 396. [2021-03-11 14:37:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4531645569620255) internal successors, (1364), 395 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1364 transitions. [2021-03-11 14:37:38,289 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:38,289 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1364 transitions. [2021-03-11 14:37:38,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1364 transitions. [2021-03-11 14:37:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:38,290 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:38,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:38,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable704 [2021-03-11 14:37:38,290 INFO L428 AbstractCegarLoop]: === Iteration 706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:38,290 INFO L82 PathProgramCache]: Analyzing trace with hash -418658239, now seen corresponding path program 700 times [2021-03-11 14:37:38,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:38,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531400119] [2021-03-11 14:37:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:38,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:38,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:38,302 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:38,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:38,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:38,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:38,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:38,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:38,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:38,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:38,417 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:38,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:38,446 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:38,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:38,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531400119] [2021-03-11 14:37:38,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:38,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:38,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422249294] [2021-03-11 14:37:38,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:38,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:38,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:38,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:38,474 INFO L87 Difference]: Start difference. First operand 396 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:38,585 INFO L93 Difference]: Finished difference Result 642 states and 1889 transitions. [2021-03-11 14:37:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:38,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:38,587 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:37:38,587 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:37:38,587 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 213.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:38,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:37:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 394. [2021-03-11 14:37:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4580152671755724) internal successors, (1359), 393 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1359 transitions. [2021-03-11 14:37:38,593 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1359 transitions. Word has length 22 [2021-03-11 14:37:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:38,593 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1359 transitions. [2021-03-11 14:37:38,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1359 transitions. [2021-03-11 14:37:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:38,594 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:38,594 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:38,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable705 [2021-03-11 14:37:38,594 INFO L428 AbstractCegarLoop]: === Iteration 707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash -943384937, now seen corresponding path program 701 times [2021-03-11 14:37:38,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:38,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725988016] [2021-03-11 14:37:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:38,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:38,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:38,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:38,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:38,622 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:38,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:38,644 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:38,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:38,673 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:38,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:38,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:38,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:38,724 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:38,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725988016] [2021-03-11 14:37:38,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:38,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:38,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789857078] [2021-03-11 14:37:38,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:38,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:38,752 INFO L87 Difference]: Start difference. First operand 394 states and 1359 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:38,859 INFO L93 Difference]: Finished difference Result 650 states and 1908 transitions. [2021-03-11 14:37:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:38,861 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:37:38,861 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:37:38,861 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:37:38,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 399. [2021-03-11 14:37:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.437185929648241) internal successors, (1368), 398 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1368 transitions. [2021-03-11 14:37:38,867 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1368 transitions. Word has length 22 [2021-03-11 14:37:38,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:38,867 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1368 transitions. [2021-03-11 14:37:38,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:38,867 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1368 transitions. [2021-03-11 14:37:38,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:38,868 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:38,868 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:38,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable706 [2021-03-11 14:37:38,868 INFO L428 AbstractCegarLoop]: === Iteration 708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:38,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:38,868 INFO L82 PathProgramCache]: Analyzing trace with hash -2019096093, now seen corresponding path program 702 times [2021-03-11 14:37:38,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:38,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653908823] [2021-03-11 14:37:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:38,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:38,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:38,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:38,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:38,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:38,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:38,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:38,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:38,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:38,949 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:38,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:38,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:38,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:39,000 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:39,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:39,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653908823] [2021-03-11 14:37:39,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:39,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:39,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635956168] [2021-03-11 14:37:39,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:39,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:39,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:39,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:39,028 INFO L87 Difference]: Start difference. First operand 399 states and 1368 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:39,140 INFO L93 Difference]: Finished difference Result 649 states and 1901 transitions. [2021-03-11 14:37:39,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:39,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:39,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:39,141 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:37:39,141 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:37:39,141 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:37:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 392. [2021-03-11 14:37:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4629156010230178) internal successors, (1354), 391 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1354 transitions. [2021-03-11 14:37:39,148 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1354 transitions. Word has length 22 [2021-03-11 14:37:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:39,148 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1354 transitions. [2021-03-11 14:37:39,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,148 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1354 transitions. [2021-03-11 14:37:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:39,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:39,148 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:39,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable707 [2021-03-11 14:37:39,149 INFO L428 AbstractCegarLoop]: === Iteration 709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:39,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:39,149 INFO L82 PathProgramCache]: Analyzing trace with hash -40546495, now seen corresponding path program 703 times [2021-03-11 14:37:39,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:39,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062131040] [2021-03-11 14:37:39,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:39,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:39,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:39,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:39,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:39,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:39,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:39,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:39,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:39,227 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:39,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:39,262 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:39,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:39,291 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:39,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:39,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062131040] [2021-03-11 14:37:39,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:39,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:39,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772879892] [2021-03-11 14:37:39,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:39,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:39,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:39,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:39,320 INFO L87 Difference]: Start difference. First operand 392 states and 1354 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:39,414 INFO L93 Difference]: Finished difference Result 649 states and 1905 transitions. [2021-03-11 14:37:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:39,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:39,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:39,416 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:37:39,416 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:37:39,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:37:39,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 398. [2021-03-11 14:37:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.4483627204030225) internal successors, (1369), 397 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1369 transitions. [2021-03-11 14:37:39,423 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:39,423 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1369 transitions. [2021-03-11 14:37:39,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1369 transitions. [2021-03-11 14:37:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:39,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:39,423 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:39,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable708 [2021-03-11 14:37:39,423 INFO L428 AbstractCegarLoop]: === Iteration 710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1570394463, now seen corresponding path program 704 times [2021-03-11 14:37:39,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:39,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455277670] [2021-03-11 14:37:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:39,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:39,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:39,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:39,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:39,452 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:39,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:39,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:39,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:39,502 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:39,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:39,536 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:39,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:39,565 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:39,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455277670] [2021-03-11 14:37:39,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:39,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:39,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657179380] [2021-03-11 14:37:39,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:39,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:39,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:39,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:39,593 INFO L87 Difference]: Start difference. First operand 398 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:39,686 INFO L93 Difference]: Finished difference Result 653 states and 1911 transitions. [2021-03-11 14:37:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:39,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:39,687 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:37:39,687 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:37:39,688 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:39,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:37:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 396. [2021-03-11 14:37:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4531645569620255) internal successors, (1364), 395 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1364 transitions. [2021-03-11 14:37:39,697 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1364 transitions. Word has length 22 [2021-03-11 14:37:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:39,697 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1364 transitions. [2021-03-11 14:37:39,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1364 transitions. [2021-03-11 14:37:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:39,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:39,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:39,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable709 [2021-03-11 14:37:39,698 INFO L428 AbstractCegarLoop]: === Iteration 711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:39,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash -628291817, now seen corresponding path program 705 times [2021-03-11 14:37:39,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:39,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896158784] [2021-03-11 14:37:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:39,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:39,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:39,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:39,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:39,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:39,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:39,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:39,749 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:39,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:39,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:39,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:39,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:39,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:39,836 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:39,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:39,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896158784] [2021-03-11 14:37:39,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:39,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:39,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306224827] [2021-03-11 14:37:39,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:39,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:39,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:39,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:39,864 INFO L87 Difference]: Start difference. First operand 396 states and 1364 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:39,958 INFO L93 Difference]: Finished difference Result 652 states and 1908 transitions. [2021-03-11 14:37:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:39,959 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:37:39,960 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:37:39,960 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:39,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:37:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 399. [2021-03-11 14:37:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.4396984924623117) internal successors, (1369), 398 states have internal predecessors, (1369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1369 transitions. [2021-03-11 14:37:39,966 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1369 transitions. Word has length 22 [2021-03-11 14:37:39,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:39,966 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1369 transitions. [2021-03-11 14:37:39,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:39,966 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1369 transitions. [2021-03-11 14:37:39,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:39,967 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:39,967 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:39,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable710 [2021-03-11 14:37:39,967 INFO L428 AbstractCegarLoop]: === Iteration 712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:39,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1517878943, now seen corresponding path program 706 times [2021-03-11 14:37:39,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:39,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985076160] [2021-03-11 14:37:39,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:39,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:39,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:39,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:39,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:39,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:39,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:39,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:40,018 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:40,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:40,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:40,078 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:40,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:40,107 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:40,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985076160] [2021-03-11 14:37:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:40,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579073307] [2021-03-11 14:37:40,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:40,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:40,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:40,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:40,135 INFO L87 Difference]: Start difference. First operand 399 states and 1369 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:40,229 INFO L93 Difference]: Finished difference Result 658 states and 1917 transitions. [2021-03-11 14:37:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:40,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:40,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:40,230 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:37:40,230 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:37:40,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:40,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:37:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 396. [2021-03-11 14:37:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4455696202531647) internal successors, (1361), 395 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1361 transitions. [2021-03-11 14:37:40,237 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1361 transitions. Word has length 22 [2021-03-11 14:37:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:40,237 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1361 transitions. [2021-03-11 14:37:40,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1361 transitions. [2021-03-11 14:37:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:40,238 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:40,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:40,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable711 [2021-03-11 14:37:40,238 INFO L428 AbstractCegarLoop]: === Iteration 713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash -617788713, now seen corresponding path program 707 times [2021-03-11 14:37:40,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:40,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255446080] [2021-03-11 14:37:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:40,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:40,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:40,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:40,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:40,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:40,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:40,290 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:40,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:40,317 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:40,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:40,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:40,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:40,370 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:40,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:40,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255446080] [2021-03-11 14:37:40,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:40,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:40,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130539598] [2021-03-11 14:37:40,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:40,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:40,398 INFO L87 Difference]: Start difference. First operand 396 states and 1361 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:40,509 INFO L93 Difference]: Finished difference Result 665 states and 1934 transitions. [2021-03-11 14:37:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:40,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:40,511 INFO L225 Difference]: With dead ends: 665 [2021-03-11 14:37:40,511 INFO L226 Difference]: Without dead ends: 651 [2021-03-11 14:37:40,511 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-03-11 14:37:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 404. [2021-03-11 14:37:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.411910669975186) internal successors, (1375), 403 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1375 transitions. [2021-03-11 14:37:40,518 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1375 transitions. Word has length 22 [2021-03-11 14:37:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:40,518 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 1375 transitions. [2021-03-11 14:37:40,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1375 transitions. [2021-03-11 14:37:40,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:40,518 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:40,518 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:40,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable712 [2021-03-11 14:37:40,518 INFO L428 AbstractCegarLoop]: === Iteration 714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:40,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash -82558911, now seen corresponding path program 708 times [2021-03-11 14:37:40,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:40,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180560552] [2021-03-11 14:37:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:40,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:40,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:40,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:40,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:40,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:40,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:40,569 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:40,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:40,596 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:40,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:40,619 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:40,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:40,648 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:40,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:40,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180560552] [2021-03-11 14:37:40,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:40,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:40,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661822478] [2021-03-11 14:37:40,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:40,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:40,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:40,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:40,676 INFO L87 Difference]: Start difference. First operand 404 states and 1375 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:40,770 INFO L93 Difference]: Finished difference Result 667 states and 1931 transitions. [2021-03-11 14:37:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:40,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:40,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:40,771 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:37:40,771 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:37:40,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:37:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 392. [2021-03-11 14:37:40,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.452685421994885) internal successors, (1350), 391 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1350 transitions. [2021-03-11 14:37:40,778 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1350 transitions. Word has length 22 [2021-03-11 14:37:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:40,778 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1350 transitions. [2021-03-11 14:37:40,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1350 transitions. [2021-03-11 14:37:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:40,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:40,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:40,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable713 [2021-03-11 14:37:40,779 INFO L428 AbstractCegarLoop]: === Iteration 715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:40,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1994123839, now seen corresponding path program 709 times [2021-03-11 14:37:40,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:40,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754953179] [2021-03-11 14:37:40,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:40,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:40,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:40,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:40,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:40,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:40,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:40,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:40,833 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:40,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:40,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:40,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:40,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:40,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:40,934 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:40,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:40,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754953179] [2021-03-11 14:37:40,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:40,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:40,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78741166] [2021-03-11 14:37:40,971 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:40,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:40,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:40,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:40,971 INFO L87 Difference]: Start difference. First operand 392 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:41,089 INFO L93 Difference]: Finished difference Result 644 states and 1891 transitions. [2021-03-11 14:37:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:41,090 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:41,091 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:37:41,091 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:37:41,091 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 220.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:37:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 397. [2021-03-11 14:37:41,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.441919191919192) internal successors, (1363), 396 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1363 transitions. [2021-03-11 14:37:41,098 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1363 transitions. Word has length 22 [2021-03-11 14:37:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:41,098 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1363 transitions. [2021-03-11 14:37:41,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1363 transitions. [2021-03-11 14:37:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:41,098 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:41,098 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:41,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable714 [2021-03-11 14:37:41,098 INFO L428 AbstractCegarLoop]: === Iteration 716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:41,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1458894037, now seen corresponding path program 710 times [2021-03-11 14:37:41,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:41,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944453268] [2021-03-11 14:37:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:41,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:41,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:41,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:41,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:41,127 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:41,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:41,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:41,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:41,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:41,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:41,218 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:41,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:41,246 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:41,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:41,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944453268] [2021-03-11 14:37:41,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:41,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:41,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270158810] [2021-03-11 14:37:41,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:41,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:41,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:41,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:41,274 INFO L87 Difference]: Start difference. First operand 397 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:41,386 INFO L93 Difference]: Finished difference Result 647 states and 1895 transitions. [2021-03-11 14:37:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:41,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:41,387 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:37:41,387 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:37:41,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:37:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 395. [2021-03-11 14:37:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.446700507614213) internal successors, (1358), 394 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1358 transitions. [2021-03-11 14:37:41,394 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1358 transitions. Word has length 22 [2021-03-11 14:37:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:41,394 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1358 transitions. [2021-03-11 14:37:41,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1358 transitions. [2021-03-11 14:37:41,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:41,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:41,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:41,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable715 [2021-03-11 14:37:41,394 INFO L428 AbstractCegarLoop]: === Iteration 717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:41,395 INFO L82 PathProgramCache]: Analyzing trace with hash 700405603, now seen corresponding path program 711 times [2021-03-11 14:37:41,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:41,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793340483] [2021-03-11 14:37:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:41,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:41,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:41,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:41,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:41,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:41,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:41,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:41,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:41,474 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:41,507 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:41,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:41,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:41,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:41,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793340483] [2021-03-11 14:37:41,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:41,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:41,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696190236] [2021-03-11 14:37:41,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:41,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:41,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:41,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:41,563 INFO L87 Difference]: Start difference. First operand 395 states and 1358 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:41,676 INFO L93 Difference]: Finished difference Result 648 states and 1896 transitions. [2021-03-11 14:37:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:41,677 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:41,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:41,678 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:37:41,678 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:37:41,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 196.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:37:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 398. [2021-03-11 14:37:41,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.433249370277078) internal successors, (1363), 397 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1363 transitions. [2021-03-11 14:37:41,684 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1363 transitions. Word has length 22 [2021-03-11 14:37:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:41,684 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1363 transitions. [2021-03-11 14:37:41,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1363 transitions. [2021-03-11 14:37:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:41,685 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:41,685 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:41,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable716 [2021-03-11 14:37:41,685 INFO L428 AbstractCegarLoop]: === Iteration 718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:41,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1448390933, now seen corresponding path program 712 times [2021-03-11 14:37:41,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:41,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040371487] [2021-03-11 14:37:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:41,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:41,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:41,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:41,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:41,713 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:41,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:41,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:41,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:41,765 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:41,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:41,798 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:41,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:41,828 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:41,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:41,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040371487] [2021-03-11 14:37:41,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:41,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:41,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256497339] [2021-03-11 14:37:41,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:41,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:41,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:41,856 INFO L87 Difference]: Start difference. First operand 398 states and 1363 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:41,950 INFO L93 Difference]: Finished difference Result 654 states and 1905 transitions. [2021-03-11 14:37:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:41,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:41,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:41,952 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:37:41,952 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:37:41,952 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:37:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 395. [2021-03-11 14:37:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4390862944162435) internal successors, (1355), 394 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1355 transitions. [2021-03-11 14:37:41,958 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1355 transitions. Word has length 22 [2021-03-11 14:37:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:41,959 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1355 transitions. [2021-03-11 14:37:41,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1355 transitions. [2021-03-11 14:37:41,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:41,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:41,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:41,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717 [2021-03-11 14:37:41,959 INFO L428 AbstractCegarLoop]: === Iteration 719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:41,959 INFO L82 PathProgramCache]: Analyzing trace with hash 647890083, now seen corresponding path program 713 times [2021-03-11 14:37:41,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:41,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219859493] [2021-03-11 14:37:41,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:41,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:41,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:41,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:41,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:41,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:41,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:41,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:42,010 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:42,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:42,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:42,062 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:42,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:42,090 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:42,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:42,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219859493] [2021-03-11 14:37:42,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:42,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:42,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083901470] [2021-03-11 14:37:42,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:42,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:42,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:42,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:42,118 INFO L87 Difference]: Start difference. First operand 395 states and 1355 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:42,229 INFO L93 Difference]: Finished difference Result 657 states and 1914 transitions. [2021-03-11 14:37:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:42,231 INFO L225 Difference]: With dead ends: 657 [2021-03-11 14:37:42,231 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:37:42,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:42,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:37:42,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 401. [2021-03-11 14:37:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.415) internal successors, (1366), 400 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1366 transitions. [2021-03-11 14:37:42,241 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1366 transitions. Word has length 22 [2021-03-11 14:37:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:42,241 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 1366 transitions. [2021-03-11 14:37:42,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,241 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1366 transitions. [2021-03-11 14:37:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:42,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:42,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:42,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable718 [2021-03-11 14:37:42,242 INFO L428 AbstractCegarLoop]: === Iteration 720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash -2036136255, now seen corresponding path program 714 times [2021-03-11 14:37:42,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:42,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032459490] [2021-03-11 14:37:42,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:42,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:42,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:42,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:42,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:42,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:42,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:42,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:42,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:42,322 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:42,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:42,345 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:42,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:42,374 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:42,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:42,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032459490] [2021-03-11 14:37:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:42,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146309584] [2021-03-11 14:37:42,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:42,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:42,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:42,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:42,402 INFO L87 Difference]: Start difference. First operand 401 states and 1366 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:42,498 INFO L93 Difference]: Finished difference Result 660 states and 1914 transitions. [2021-03-11 14:37:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:42,500 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:37:42,500 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:37:42,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:42,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:37:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 392. [2021-03-11 14:37:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.445012787723785) internal successors, (1347), 391 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1347 transitions. [2021-03-11 14:37:42,506 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1347 transitions. Word has length 22 [2021-03-11 14:37:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:42,506 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1347 transitions. [2021-03-11 14:37:42,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,506 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1347 transitions. [2021-03-11 14:37:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:42,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:42,507 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:42,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable719 [2021-03-11 14:37:42,507 INFO L428 AbstractCegarLoop]: === Iteration 721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:42,507 INFO L82 PathProgramCache]: Analyzing trace with hash -57586657, now seen corresponding path program 715 times [2021-03-11 14:37:42,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:42,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950721676] [2021-03-11 14:37:42,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:42,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:42,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:42,520 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:42,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:42,537 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:42,561 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:42,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:42,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:42,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:42,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:42,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:42,630 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:42,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:42,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950721676] [2021-03-11 14:37:42,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:42,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:42,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108811276] [2021-03-11 14:37:42,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:42,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:42,658 INFO L87 Difference]: Start difference. First operand 392 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:42,770 INFO L93 Difference]: Finished difference Result 672 states and 1958 transitions. [2021-03-11 14:37:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:42,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:42,772 INFO L225 Difference]: With dead ends: 672 [2021-03-11 14:37:42,772 INFO L226 Difference]: Without dead ends: 658 [2021-03-11 14:37:42,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-03-11 14:37:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 405. [2021-03-11 14:37:42,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 3.4183168316831685) internal successors, (1381), 404 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1381 transitions. [2021-03-11 14:37:42,778 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1381 transitions. Word has length 22 [2021-03-11 14:37:42,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:42,778 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 1381 transitions. [2021-03-11 14:37:42,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1381 transitions. [2021-03-11 14:37:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:42,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:42,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:42,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable720 [2021-03-11 14:37:42,779 INFO L428 AbstractCegarLoop]: === Iteration 722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:42,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:42,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1133297813, now seen corresponding path program 716 times [2021-03-11 14:37:42,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:42,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440398767] [2021-03-11 14:37:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:42,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:42,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:42,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:42,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:42,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:42,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:42,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:42,830 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:42,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:42,848 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:42,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:42,871 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:42,899 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:42,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:42,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:42,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440398767] [2021-03-11 14:37:42,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:42,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:42,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565818354] [2021-03-11 14:37:42,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:42,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:42,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:42,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:42,927 INFO L87 Difference]: Start difference. First operand 405 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:43,039 INFO L93 Difference]: Finished difference Result 671 states and 1951 transitions. [2021-03-11 14:37:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:43,041 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:37:43,041 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:37:43,041 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:43,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:37:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 400. [2021-03-11 14:37:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.426065162907268) internal successors, (1367), 399 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1367 transitions. [2021-03-11 14:37:43,047 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1367 transitions. Word has length 22 [2021-03-11 14:37:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:43,047 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1367 transitions. [2021-03-11 14:37:43,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,047 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1367 transitions. [2021-03-11 14:37:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:43,048 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:43,048 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:43,048 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable721 [2021-03-11 14:37:43,048 INFO L428 AbstractCegarLoop]: === Iteration 723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1658024511, now seen corresponding path program 717 times [2021-03-11 14:37:43,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:43,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281609064] [2021-03-11 14:37:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:43,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:43,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:43,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:43,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:43,077 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:43,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:43,100 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:43,118 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:43,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:43,141 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:43,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:43,170 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:43,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:43,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281609064] [2021-03-11 14:37:43,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:43,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:43,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842874114] [2021-03-11 14:37:43,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:43,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:43,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:43,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:43,198 INFO L87 Difference]: Start difference. First operand 400 states and 1367 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:43,315 INFO L93 Difference]: Finished difference Result 678 states and 1964 transitions. [2021-03-11 14:37:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:43,316 INFO L225 Difference]: With dead ends: 678 [2021-03-11 14:37:43,316 INFO L226 Difference]: Without dead ends: 664 [2021-03-11 14:37:43,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-03-11 14:37:43,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 408. [2021-03-11 14:37:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.3931203931203933) internal successors, (1381), 407 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1381 transitions. [2021-03-11 14:37:43,323 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1381 transitions. Word has length 22 [2021-03-11 14:37:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:43,323 INFO L480 AbstractCegarLoop]: Abstraction has 408 states and 1381 transitions. [2021-03-11 14:37:43,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1381 transitions. [2021-03-11 14:37:43,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:43,324 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:43,324 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:43,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable722 [2021-03-11 14:37:43,324 INFO L428 AbstractCegarLoop]: === Iteration 724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:43,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:43,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1122794709, now seen corresponding path program 718 times [2021-03-11 14:37:43,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:43,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234490014] [2021-03-11 14:37:43,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:43,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:43,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:43,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:43,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:43,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:43,375 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:43,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:43,393 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:43,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:43,417 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:43,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:43,446 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:43,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:43,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234490014] [2021-03-11 14:37:43,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:43,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:43,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356086488] [2021-03-11 14:37:43,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:43,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:43,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:43,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:43,474 INFO L87 Difference]: Start difference. First operand 408 states and 1381 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:43,573 INFO L93 Difference]: Finished difference Result 680 states and 1961 transitions. [2021-03-11 14:37:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:43,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:43,574 INFO L225 Difference]: With dead ends: 680 [2021-03-11 14:37:43,574 INFO L226 Difference]: Without dead ends: 656 [2021-03-11 14:37:43,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:43,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-03-11 14:37:43,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 400. [2021-03-11 14:37:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.408521303258145) internal successors, (1360), 399 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1360 transitions. [2021-03-11 14:37:43,581 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1360 transitions. Word has length 22 [2021-03-11 14:37:43,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:43,581 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 1360 transitions. [2021-03-11 14:37:43,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,581 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1360 transitions. [2021-03-11 14:37:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:43,581 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:43,581 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:43,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable723 [2021-03-11 14:37:43,581 INFO L428 AbstractCegarLoop]: === Iteration 725 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1721043135, now seen corresponding path program 719 times [2021-03-11 14:37:43,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:43,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440760041] [2021-03-11 14:37:43,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:43,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:43,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:43,594 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:43,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:43,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:43,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:43,633 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:43,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:43,651 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:43,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:43,673 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:43,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:43,701 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:43,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:43,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440760041] [2021-03-11 14:37:43,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:43,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:43,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650185058] [2021-03-11 14:37:43,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:43,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:43,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:43,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:43,729 INFO L87 Difference]: Start difference. First operand 400 states and 1360 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:43,846 INFO L93 Difference]: Finished difference Result 674 states and 1949 transitions. [2021-03-11 14:37:43,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:43,847 INFO L225 Difference]: With dead ends: 674 [2021-03-11 14:37:43,847 INFO L226 Difference]: Without dead ends: 661 [2021-03-11 14:37:43,847 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-03-11 14:37:43,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 406. [2021-03-11 14:37:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.3851851851851853) internal successors, (1371), 405 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1371 transitions. [2021-03-11 14:37:43,854 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1371 transitions. Word has length 22 [2021-03-11 14:37:43,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:43,854 INFO L480 AbstractCegarLoop]: Abstraction has 406 states and 1371 transitions. [2021-03-11 14:37:43,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1371 transitions. [2021-03-11 14:37:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:43,854 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:43,854 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:43,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable724 [2021-03-11 14:37:43,855 INFO L428 AbstractCegarLoop]: === Iteration 726 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:43,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:43,855 INFO L82 PathProgramCache]: Analyzing trace with hash -110102177, now seen corresponding path program 720 times [2021-03-11 14:37:43,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:43,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291026939] [2021-03-11 14:37:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:43,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:43,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:43,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:43,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:43,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:43,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:43,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:43,906 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:43,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:43,924 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:43,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:43,947 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:43,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:43,977 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:43,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:44,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291026939] [2021-03-11 14:37:44,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:44,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:44,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315197432] [2021-03-11 14:37:44,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:44,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:44,005 INFO L87 Difference]: Start difference. First operand 406 states and 1371 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:44,109 INFO L93 Difference]: Finished difference Result 677 states and 1949 transitions. [2021-03-11 14:37:44,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:44,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:44,110 INFO L225 Difference]: With dead ends: 677 [2021-03-11 14:37:44,110 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:37:44,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:37:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 379. [2021-03-11 14:37:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.492063492063492) internal successors, (1320), 378 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1320 transitions. [2021-03-11 14:37:44,116 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1320 transitions. Word has length 22 [2021-03-11 14:37:44,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:44,117 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1320 transitions. [2021-03-11 14:37:44,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,117 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1320 transitions. [2021-03-11 14:37:44,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:44,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:44,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:44,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable725 [2021-03-11 14:37:44,117 INFO L428 AbstractCegarLoop]: === Iteration 727 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:44,117 INFO L82 PathProgramCache]: Analyzing trace with hash 785708255, now seen corresponding path program 721 times [2021-03-11 14:37:44,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:44,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755678898] [2021-03-11 14:37:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:44,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:44,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:44,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:44,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:44,150 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:44,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:44,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:44,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:44,197 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:44,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:44,219 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:44,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:44,248 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:44,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:44,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755678898] [2021-03-11 14:37:44,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:44,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:44,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935572962] [2021-03-11 14:37:44,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:44,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:44,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:44,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:44,275 INFO L87 Difference]: Start difference. First operand 379 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:44,396 INFO L93 Difference]: Finished difference Result 582 states and 1731 transitions. [2021-03-11 14:37:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:44,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:44,398 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:37:44,398 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:37:44,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:44,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:37:44,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 384. [2021-03-11 14:37:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.485639686684073) internal successors, (1335), 383 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1335 transitions. [2021-03-11 14:37:44,404 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1335 transitions. Word has length 22 [2021-03-11 14:37:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:44,404 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1335 transitions. [2021-03-11 14:37:44,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1335 transitions. [2021-03-11 14:37:44,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:44,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:44,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:44,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable726 [2021-03-11 14:37:44,405 INFO L428 AbstractCegarLoop]: === Iteration 728 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:44,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:44,405 INFO L82 PathProgramCache]: Analyzing trace with hash 940200397, now seen corresponding path program 722 times [2021-03-11 14:37:44,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:44,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117455859] [2021-03-11 14:37:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:44,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:44,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:44,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:44,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:44,434 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:44,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:44,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:44,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:44,480 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:44,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:44,504 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:44,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:44,534 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:44,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:44,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117455859] [2021-03-11 14:37:44,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:44,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:44,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427343084] [2021-03-11 14:37:44,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:44,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:44,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:44,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:44,563 INFO L87 Difference]: Start difference. First operand 384 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:44,666 INFO L93 Difference]: Finished difference Result 580 states and 1726 transitions. [2021-03-11 14:37:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:44,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:44,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:44,668 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:37:44,668 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:37:44,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 166.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:44,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:37:44,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 383. [2021-03-11 14:37:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4895287958115184) internal successors, (1333), 382 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1333 transitions. [2021-03-11 14:37:44,674 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1333 transitions. Word has length 22 [2021-03-11 14:37:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:44,674 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1333 transitions. [2021-03-11 14:37:44,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,674 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1333 transitions. [2021-03-11 14:37:44,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:44,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:44,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:44,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable727 [2021-03-11 14:37:44,675 INFO L428 AbstractCegarLoop]: === Iteration 729 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:44,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:44,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1292054521, now seen corresponding path program 723 times [2021-03-11 14:37:44,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:44,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275025405] [2021-03-11 14:37:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:44,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:44,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:44,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:44,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:44,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:44,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:44,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:44,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:44,788 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:44,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:44,821 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:44,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:44,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275025405] [2021-03-11 14:37:44,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:44,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:44,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682182098] [2021-03-11 14:37:44,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:44,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:44,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:44,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:44,850 INFO L87 Difference]: Start difference. First operand 383 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:44,976 INFO L93 Difference]: Finished difference Result 592 states and 1751 transitions. [2021-03-11 14:37:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:44,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:44,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:44,978 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:37:44,978 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:37:44,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:37:44,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 387. [2021-03-11 14:37:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.471502590673575) internal successors, (1340), 386 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1340 transitions. [2021-03-11 14:37:44,984 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1340 transitions. Word has length 22 [2021-03-11 14:37:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:44,984 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1340 transitions. [2021-03-11 14:37:44,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:44,985 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1340 transitions. [2021-03-11 14:37:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:44,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:44,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:44,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable728 [2021-03-11 14:37:44,985 INFO L428 AbstractCegarLoop]: === Iteration 730 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1365361933, now seen corresponding path program 724 times [2021-03-11 14:37:44,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:44,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745872732] [2021-03-11 14:37:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:44,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:44,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:44,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:44,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:44,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:45,014 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:45,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:45,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:45,062 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:45,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:45,099 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:45,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:45,129 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:45,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:45,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745872732] [2021-03-11 14:37:45,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:45,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:45,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474449683] [2021-03-11 14:37:45,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:45,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:45,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:45,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:45,157 INFO L87 Difference]: Start difference. First operand 387 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:45,262 INFO L93 Difference]: Finished difference Result 597 states and 1757 transitions. [2021-03-11 14:37:45,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:45,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:45,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:45,264 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:37:45,264 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:45,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:45,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 383. [2021-03-11 14:37:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4842931937172774) internal successors, (1331), 382 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1331 transitions. [2021-03-11 14:37:45,270 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:45,270 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1331 transitions. [2021-03-11 14:37:45,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1331 transitions. [2021-03-11 14:37:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:45,271 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:45,271 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:45,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable729 [2021-03-11 14:37:45,271 INFO L428 AbstractCegarLoop]: === Iteration 731 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:45,271 INFO L82 PathProgramCache]: Analyzing trace with hash -153891191, now seen corresponding path program 725 times [2021-03-11 14:37:45,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:45,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276235063] [2021-03-11 14:37:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:45,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:45,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:45,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:45,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:45,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:45,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:45,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:45,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:45,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:45,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:45,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:45,412 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:45,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:45,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276235063] [2021-03-11 14:37:45,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:45,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:45,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213606550] [2021-03-11 14:37:45,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:45,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:45,440 INFO L87 Difference]: Start difference. First operand 383 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:45,541 INFO L93 Difference]: Finished difference Result 586 states and 1735 transitions. [2021-03-11 14:37:45,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:45,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:45,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:45,543 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:37:45,543 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:45,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 385. [2021-03-11 14:37:45,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4739583333333335) internal successors, (1334), 384 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1334 transitions. [2021-03-11 14:37:45,549 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1334 transitions. Word has length 22 [2021-03-11 14:37:45,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:45,549 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1334 transitions. [2021-03-11 14:37:45,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,549 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1334 transitions. [2021-03-11 14:37:45,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:45,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:45,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:45,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable730 [2021-03-11 14:37:45,550 INFO L428 AbstractCegarLoop]: === Iteration 732 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash -691746769, now seen corresponding path program 726 times [2021-03-11 14:37:45,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:45,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307918694] [2021-03-11 14:37:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:45,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:45,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:45,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:45,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:45,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:45,599 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:45,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:45,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:45,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:45,660 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:45,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:45,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:45,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:45,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307918694] [2021-03-11 14:37:45,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:45,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:45,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278764945] [2021-03-11 14:37:45,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:45,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:45,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:45,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:45,719 INFO L87 Difference]: Start difference. First operand 385 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:45,810 INFO L93 Difference]: Finished difference Result 593 states and 1747 transitions. [2021-03-11 14:37:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:45,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:45,812 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:37:45,812 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:37:45,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:45,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:37:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 381. [2021-03-11 14:37:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4894736842105263) internal successors, (1326), 380 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1326 transitions. [2021-03-11 14:37:45,817 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1326 transitions. Word has length 22 [2021-03-11 14:37:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:45,818 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1326 transitions. [2021-03-11 14:37:45,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1326 transitions. [2021-03-11 14:37:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:45,818 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:45,818 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:45,818 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable731 [2021-03-11 14:37:45,818 INFO L428 AbstractCegarLoop]: === Iteration 733 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:45,818 INFO L82 PathProgramCache]: Analyzing trace with hash 746706937, now seen corresponding path program 727 times [2021-03-11 14:37:45,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:45,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380842554] [2021-03-11 14:37:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:45,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:45,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:45,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:45,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:45,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:45,848 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:45,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:45,869 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:45,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:45,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:45,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:45,911 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:45,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:45,940 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:45,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:45,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380842554] [2021-03-11 14:37:45,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:45,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053039065] [2021-03-11 14:37:45,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:45,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:45,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:45,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:45,969 INFO L87 Difference]: Start difference. First operand 381 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:46,064 INFO L93 Difference]: Finished difference Result 572 states and 1708 transitions. [2021-03-11 14:37:46,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:46,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:46,066 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:37:46,066 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:37:46,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:37:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 383. [2021-03-11 14:37:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.481675392670157) internal successors, (1330), 382 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1330 transitions. [2021-03-11 14:37:46,072 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1330 transitions. Word has length 22 [2021-03-11 14:37:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:46,072 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1330 transitions. [2021-03-11 14:37:46,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1330 transitions. [2021-03-11 14:37:46,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:46,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:46,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:46,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable732 [2021-03-11 14:37:46,073 INFO L428 AbstractCegarLoop]: === Iteration 734 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:46,073 INFO L82 PathProgramCache]: Analyzing trace with hash 901199079, now seen corresponding path program 728 times [2021-03-11 14:37:46,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:46,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941480827] [2021-03-11 14:37:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:46,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:46,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:46,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:46,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:46,102 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:46,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:46,129 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:46,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:46,148 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:46,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:46,171 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:46,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:46,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:46,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:46,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941480827] [2021-03-11 14:37:46,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:46,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:46,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726204855] [2021-03-11 14:37:46,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:46,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:46,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:46,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:46,229 INFO L87 Difference]: Start difference. First operand 383 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:46,303 INFO L93 Difference]: Finished difference Result 570 states and 1703 transitions. [2021-03-11 14:37:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:46,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:46,304 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:37:46,304 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:37:46,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 165.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:37:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 382. [2021-03-11 14:37:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4855643044619424) internal successors, (1328), 381 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1328 transitions. [2021-03-11 14:37:46,310 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1328 transitions. Word has length 22 [2021-03-11 14:37:46,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:46,311 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1328 transitions. [2021-03-11 14:37:46,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1328 transitions. [2021-03-11 14:37:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:46,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:46,311 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:46,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable733 [2021-03-11 14:37:46,311 INFO L428 AbstractCegarLoop]: === Iteration 735 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash -853730917, now seen corresponding path program 729 times [2021-03-11 14:37:46,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:46,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354414388] [2021-03-11 14:37:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:46,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:46,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:46,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:46,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:46,340 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:46,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:46,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:46,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:46,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:46,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:46,402 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:46,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:46,431 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:46,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:46,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354414388] [2021-03-11 14:37:46,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:46,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:46,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003100771] [2021-03-11 14:37:46,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:46,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:46,459 INFO L87 Difference]: Start difference. First operand 382 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:46,570 INFO L93 Difference]: Finished difference Result 574 states and 1712 transitions. [2021-03-11 14:37:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:46,575 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:37:46,575 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:37:46,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:46,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:37:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 384. [2021-03-11 14:37:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.475195822454308) internal successors, (1331), 383 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1331 transitions. [2021-03-11 14:37:46,581 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:46,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:46,581 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1331 transitions. [2021-03-11 14:37:46,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1331 transitions. [2021-03-11 14:37:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:46,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:46,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:46,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable734 [2021-03-11 14:37:46,582 INFO L428 AbstractCegarLoop]: === Iteration 736 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1356272469, now seen corresponding path program 730 times [2021-03-11 14:37:46,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:46,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335417829] [2021-03-11 14:37:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:46,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:46,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:46,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:46,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:46,613 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:46,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:46,635 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:46,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:46,654 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:46,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:46,679 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:46,710 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:46,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:46,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335417829] [2021-03-11 14:37:46,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:46,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:46,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113839962] [2021-03-11 14:37:46,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:46,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:46,740 INFO L87 Difference]: Start difference. First operand 384 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:46,842 INFO L93 Difference]: Finished difference Result 573 states and 1708 transitions. [2021-03-11 14:37:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:46,843 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:37:46,843 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:37:46,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:37:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 382. [2021-03-11 14:37:46,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 381 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1327 transitions. [2021-03-11 14:37:46,849 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1327 transitions. Word has length 22 [2021-03-11 14:37:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:46,849 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1327 transitions. [2021-03-11 14:37:46,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1327 transitions. [2021-03-11 14:37:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:46,850 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:46,850 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:46,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable735 [2021-03-11 14:37:46,850 INFO L428 AbstractCegarLoop]: === Iteration 737 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1995290667, now seen corresponding path program 731 times [2021-03-11 14:37:46,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:46,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162094343] [2021-03-11 14:37:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:46,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:46,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:46,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:46,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:46,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:46,880 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:46,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:46,900 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:46,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:46,919 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:46,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:46,943 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:46,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:46,973 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:46,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:47,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162094343] [2021-03-11 14:37:47,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:47,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:47,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279809777] [2021-03-11 14:37:47,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:47,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:47,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:47,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:47,002 INFO L87 Difference]: Start difference. First operand 382 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:47,074 INFO L93 Difference]: Finished difference Result 569 states and 1700 transitions. [2021-03-11 14:37:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:47,076 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:37:47,076 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:37:47,076 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 159.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:37:47,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 383. [2021-03-11 14:37:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4764397905759163) internal successors, (1328), 382 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1328 transitions. [2021-03-11 14:37:47,082 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1328 transitions. Word has length 22 [2021-03-11 14:37:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:47,082 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1328 transitions. [2021-03-11 14:37:47,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1328 transitions. [2021-03-11 14:37:47,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:47,083 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:47,083 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:47,083 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable736 [2021-03-11 14:37:47,083 INFO L428 AbstractCegarLoop]: === Iteration 738 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:47,083 INFO L82 PathProgramCache]: Analyzing trace with hash -688735671, now seen corresponding path program 732 times [2021-03-11 14:37:47,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:47,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615042218] [2021-03-11 14:37:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:47,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:47,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:47,096 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:47,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:47,112 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:47,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:47,133 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:47,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:47,154 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:47,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:47,179 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:47,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:47,208 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:47,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:47,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615042218] [2021-03-11 14:37:47,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:47,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:47,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853739072] [2021-03-11 14:37:47,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:47,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:47,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:47,236 INFO L87 Difference]: Start difference. First operand 383 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:47,331 INFO L93 Difference]: Finished difference Result 570 states and 1701 transitions. [2021-03-11 14:37:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:47,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:47,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:47,332 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:37:47,332 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:37:47,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:37:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 381. [2021-03-11 14:37:47,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.486842105263158) internal successors, (1325), 380 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1325 transitions. [2021-03-11 14:37:47,339 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1325 transitions. Word has length 22 [2021-03-11 14:37:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:47,339 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1325 transitions. [2021-03-11 14:37:47,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,339 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1325 transitions. [2021-03-11 14:37:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:47,339 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:47,339 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:47,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable737 [2021-03-11 14:37:47,339 INFO L428 AbstractCegarLoop]: === Iteration 739 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:47,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:47,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1958101441, now seen corresponding path program 733 times [2021-03-11 14:37:47,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:47,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649680888] [2021-03-11 14:37:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:47,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:47,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:47,352 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:47,368 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:47,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:47,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:47,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:47,421 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:47,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:47,444 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:47,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:47,473 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:47,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:47,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649680888] [2021-03-11 14:37:47,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:47,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:47,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101934474] [2021-03-11 14:37:47,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:47,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:47,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:47,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:47,502 INFO L87 Difference]: Start difference. First operand 381 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:47,593 INFO L93 Difference]: Finished difference Result 588 states and 1745 transitions. [2021-03-11 14:37:47,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:47,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:47,595 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:37:47,595 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:47,595 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 386. [2021-03-11 14:37:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4753246753246754) internal successors, (1338), 385 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1338 transitions. [2021-03-11 14:37:47,601 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1338 transitions. Word has length 22 [2021-03-11 14:37:47,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:47,601 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1338 transitions. [2021-03-11 14:37:47,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1338 transitions. [2021-03-11 14:37:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:47,602 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:47,602 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:47,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable738 [2021-03-11 14:37:47,602 INFO L428 AbstractCegarLoop]: === Iteration 740 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1455559889, now seen corresponding path program 734 times [2021-03-11 14:37:47,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:47,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387096452] [2021-03-11 14:37:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:47,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:47,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:47,615 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:47,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:47,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:47,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:47,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:47,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:47,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:47,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:47,705 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:47,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:47,735 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:47,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:47,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387096452] [2021-03-11 14:37:47,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:47,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:47,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115824074] [2021-03-11 14:37:47,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:47,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:47,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:47,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:47,763 INFO L87 Difference]: Start difference. First operand 386 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:47,854 INFO L93 Difference]: Finished difference Result 587 states and 1741 transitions. [2021-03-11 14:37:47,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:47,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:47,856 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:37:47,856 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:37:47,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:37:47,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 384. [2021-03-11 14:37:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.480417754569191) internal successors, (1333), 383 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1333 transitions. [2021-03-11 14:37:47,862 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1333 transitions. Word has length 22 [2021-03-11 14:37:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:47,862 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1333 transitions. [2021-03-11 14:37:47,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1333 transitions. [2021-03-11 14:37:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:47,863 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:47,863 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:47,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable739 [2021-03-11 14:37:47,863 INFO L428 AbstractCegarLoop]: === Iteration 741 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:47,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:47,863 INFO L82 PathProgramCache]: Analyzing trace with hash -230081735, now seen corresponding path program 735 times [2021-03-11 14:37:47,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:47,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102184981] [2021-03-11 14:37:47,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:47,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:47,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:47,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:47,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:47,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:47,892 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:47,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:47,913 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:47,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:47,941 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:47,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:47,977 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:47,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:48,006 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:48,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:48,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102184981] [2021-03-11 14:37:48,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:48,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:48,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384216404] [2021-03-11 14:37:48,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:48,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:48,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:48,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:48,034 INFO L87 Difference]: Start difference. First operand 384 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:48,126 INFO L93 Difference]: Finished difference Result 596 states and 1759 transitions. [2021-03-11 14:37:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:48,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:48,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:48,128 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:37:48,128 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:37:48,128 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:37:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 388. [2021-03-11 14:37:48,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.462532299741602) internal successors, (1340), 387 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1340 transitions. [2021-03-11 14:37:48,134 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1340 transitions. Word has length 22 [2021-03-11 14:37:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:48,134 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1340 transitions. [2021-03-11 14:37:48,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1340 transitions. [2021-03-11 14:37:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:48,135 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:48,135 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:48,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable740 [2021-03-11 14:37:48,135 INFO L428 AbstractCegarLoop]: === Iteration 742 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:48,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:48,135 INFO L82 PathProgramCache]: Analyzing trace with hash -156774323, now seen corresponding path program 736 times [2021-03-11 14:37:48,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:48,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025958549] [2021-03-11 14:37:48,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:48,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:48,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:48,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:48,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:48,164 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:48,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:48,184 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:48,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:48,211 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:48,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:48,247 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:48,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:48,277 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:48,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:48,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025958549] [2021-03-11 14:37:48,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:48,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:48,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145424252] [2021-03-11 14:37:48,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:48,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:48,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:48,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:48,305 INFO L87 Difference]: Start difference. First operand 388 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:48,385 INFO L93 Difference]: Finished difference Result 601 states and 1765 transitions. [2021-03-11 14:37:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:48,386 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:48,387 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:48,387 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:37:48,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:37:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 384. [2021-03-11 14:37:48,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4725848563968666) internal successors, (1330), 383 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1330 transitions. [2021-03-11 14:37:48,393 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1330 transitions. Word has length 22 [2021-03-11 14:37:48,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:48,393 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1330 transitions. [2021-03-11 14:37:48,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,393 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1330 transitions. [2021-03-11 14:37:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:48,394 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:48,394 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:48,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable741 [2021-03-11 14:37:48,394 INFO L428 AbstractCegarLoop]: === Iteration 743 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:48,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:48,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370097, now seen corresponding path program 737 times [2021-03-11 14:37:48,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:48,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006288257] [2021-03-11 14:37:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:48,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:48,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:48,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:48,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:48,423 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:48,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:48,444 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:48,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:48,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:48,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:48,512 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:48,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:48,542 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:48,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:48,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006288257] [2021-03-11 14:37:48,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:48,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:48,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540608394] [2021-03-11 14:37:48,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:48,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:48,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:48,570 INFO L87 Difference]: Start difference. First operand 384 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:48,663 INFO L93 Difference]: Finished difference Result 593 states and 1749 transitions. [2021-03-11 14:37:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:48,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:48,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:48,664 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:37:48,665 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:37:48,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 205.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:48,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:37:48,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 387. [2021-03-11 14:37:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4585492227979273) internal successors, (1335), 386 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1335 transitions. [2021-03-11 14:37:48,671 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1335 transitions. Word has length 22 [2021-03-11 14:37:48,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:48,671 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1335 transitions. [2021-03-11 14:37:48,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1335 transitions. [2021-03-11 14:37:48,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:48,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:48,671 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:48,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable742 [2021-03-11 14:37:48,672 INFO L428 AbstractCegarLoop]: === Iteration 744 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:48,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:48,672 INFO L82 PathProgramCache]: Analyzing trace with hash -432212793, now seen corresponding path program 738 times [2021-03-11 14:37:48,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:48,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63919739] [2021-03-11 14:37:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:48,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:48,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:48,688 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:48,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:48,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:48,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:48,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:48,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:48,753 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:48,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:48,793 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:48,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:48,823 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:48,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63919739] [2021-03-11 14:37:48,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:48,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:48,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111641423] [2021-03-11 14:37:48,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:48,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:48,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:48,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:48,851 INFO L87 Difference]: Start difference. First operand 387 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:48,928 INFO L93 Difference]: Finished difference Result 599 states and 1758 transitions. [2021-03-11 14:37:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:48,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:48,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:48,930 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:37:48,930 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:48,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:48,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 381. [2021-03-11 14:37:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.481578947368421) internal successors, (1323), 380 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1323 transitions. [2021-03-11 14:37:48,936 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1323 transitions. Word has length 22 [2021-03-11 14:37:48,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:48,936 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1323 transitions. [2021-03-11 14:37:48,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:48,936 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1323 transitions. [2021-03-11 14:37:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:48,937 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:48,937 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:48,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable743 [2021-03-11 14:37:48,937 INFO L428 AbstractCegarLoop]: === Iteration 745 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:48,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1856777489, now seen corresponding path program 739 times [2021-03-11 14:37:48,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:48,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798425642] [2021-03-11 14:37:48,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:48,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:48,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:48,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:48,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:48,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:48,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:48,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:48,986 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:48,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:49,019 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:49,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:49,043 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:49,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:49,073 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:49,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:49,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798425642] [2021-03-11 14:37:49,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:49,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:49,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713414499] [2021-03-11 14:37:49,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:49,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:49,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:49,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:49,101 INFO L87 Difference]: Start difference. First operand 381 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:49,172 INFO L93 Difference]: Finished difference Result 577 states and 1715 transitions. [2021-03-11 14:37:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:49,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:49,174 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:37:49,174 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:37:49,174 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:37:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 384. [2021-03-11 14:37:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4725848563968666) internal successors, (1330), 383 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1330 transitions. [2021-03-11 14:37:49,180 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1330 transitions. Word has length 22 [2021-03-11 14:37:49,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:49,180 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1330 transitions. [2021-03-11 14:37:49,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,180 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1330 transitions. [2021-03-11 14:37:49,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:49,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:49,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:49,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable744 [2021-03-11 14:37:49,181 INFO L428 AbstractCegarLoop]: === Iteration 746 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:49,181 INFO L82 PathProgramCache]: Analyzing trace with hash -245836531, now seen corresponding path program 740 times [2021-03-11 14:37:49,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:49,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154397564] [2021-03-11 14:37:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:49,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:49,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:49,194 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:49,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:49,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:49,231 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:49,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:49,263 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:49,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:49,287 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:49,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:49,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:49,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:49,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154397564] [2021-03-11 14:37:49,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:49,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:49,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731576349] [2021-03-11 14:37:49,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:49,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:49,346 INFO L87 Difference]: Start difference. First operand 384 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:49,448 INFO L93 Difference]: Finished difference Result 578 states and 1716 transitions. [2021-03-11 14:37:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:49,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:49,450 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:37:49,450 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:37:49,450 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:49,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:37:49,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 383. [2021-03-11 14:37:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4764397905759163) internal successors, (1328), 382 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1328 transitions. [2021-03-11 14:37:49,456 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1328 transitions. Word has length 22 [2021-03-11 14:37:49,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:49,456 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1328 transitions. [2021-03-11 14:37:49,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1328 transitions. [2021-03-11 14:37:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:49,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:49,457 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:49,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable745 [2021-03-11 14:37:49,457 INFO L428 AbstractCegarLoop]: === Iteration 747 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:49,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash 250006631, now seen corresponding path program 741 times [2021-03-11 14:37:49,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:49,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891826092] [2021-03-11 14:37:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:49,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:49,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:49,470 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:49,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:49,486 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:49,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:49,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:49,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:49,539 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:49,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:49,572 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:49,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:49,602 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:49,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:49,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891826092] [2021-03-11 14:37:49,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:49,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:49,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492755994] [2021-03-11 14:37:49,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:49,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:49,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:49,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:49,631 INFO L87 Difference]: Start difference. First operand 383 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:49,702 INFO L93 Difference]: Finished difference Result 584 states and 1727 transitions. [2021-03-11 14:37:49,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:49,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:49,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:49,703 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:37:49,703 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:37:49,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:49,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:37:49,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 385. [2021-03-11 14:37:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4661458333333335) internal successors, (1331), 384 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1331 transitions. [2021-03-11 14:37:49,709 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:49,709 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1331 transitions. [2021-03-11 14:37:49,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1331 transitions. [2021-03-11 14:37:49,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:49,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:49,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:49,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable746 [2021-03-11 14:37:49,710 INFO L428 AbstractCegarLoop]: === Iteration 748 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash -287848947, now seen corresponding path program 742 times [2021-03-11 14:37:49,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:49,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176923420] [2021-03-11 14:37:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:49,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:49,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:49,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:49,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:49,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:49,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:49,762 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:49,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:49,794 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:49,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:49,827 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:49,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:49,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:49,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:49,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176923420] [2021-03-11 14:37:49,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:49,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:49,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858759751] [2021-03-11 14:37:49,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:49,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:49,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:49,886 INFO L87 Difference]: Start difference. First operand 385 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:49,973 INFO L93 Difference]: Finished difference Result 591 states and 1739 transitions. [2021-03-11 14:37:49,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:49,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:49,974 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:37:49,975 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:37:49,975 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:37:49,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 383. [2021-03-11 14:37:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4712041884816753) internal successors, (1326), 382 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1326 transitions. [2021-03-11 14:37:49,984 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1326 transitions. Word has length 22 [2021-03-11 14:37:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:49,984 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1326 transitions. [2021-03-11 14:37:49,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1326 transitions. [2021-03-11 14:37:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:49,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:49,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:49,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable747 [2021-03-11 14:37:49,985 INFO L428 AbstractCegarLoop]: === Iteration 749 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash 260509735, now seen corresponding path program 743 times [2021-03-11 14:37:49,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:49,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651111862] [2021-03-11 14:37:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:49,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:49,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:49,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:49,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:49,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:50,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:50,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:50,036 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:50,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:50,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:50,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:50,110 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:50,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:50,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:50,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:50,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651111862] [2021-03-11 14:37:50,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:50,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:50,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044436699] [2021-03-11 14:37:50,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:50,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:50,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:50,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:50,169 INFO L87 Difference]: Start difference. First operand 383 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:50,262 INFO L93 Difference]: Finished difference Result 587 states and 1732 transitions. [2021-03-11 14:37:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:50,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:50,263 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:37:50,263 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:37:50,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 213.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:50,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:37:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 386. [2021-03-11 14:37:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4571428571428573) internal successors, (1331), 385 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1331 transitions. [2021-03-11 14:37:50,270 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:50,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:50,270 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1331 transitions. [2021-03-11 14:37:50,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,270 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1331 transitions. [2021-03-11 14:37:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:50,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:50,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:50,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable748 [2021-03-11 14:37:50,271 INFO L428 AbstractCegarLoop]: === Iteration 750 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:50,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:50,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1888286801, now seen corresponding path program 744 times [2021-03-11 14:37:50,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:50,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296766665] [2021-03-11 14:37:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:50,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:50,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:50,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:50,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:50,301 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:37:50,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:37:50,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:50,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:50,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:50,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:50,397 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:50,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:50,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:50,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:50,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296766665] [2021-03-11 14:37:50,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:50,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:50,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669568399] [2021-03-11 14:37:50,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:50,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:50,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:50,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:50,457 INFO L87 Difference]: Start difference. First operand 386 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:50,537 INFO L93 Difference]: Finished difference Result 593 states and 1741 transitions. [2021-03-11 14:37:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:50,539 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:37:50,539 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:37:50,539 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:37:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 379. [2021-03-11 14:37:50,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.486772486772487) internal successors, (1318), 378 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1318 transitions. [2021-03-11 14:37:50,545 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1318 transitions. Word has length 22 [2021-03-11 14:37:50,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:50,545 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1318 transitions. [2021-03-11 14:37:50,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1318 transitions. [2021-03-11 14:37:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:50,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:50,546 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:50,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable749 [2021-03-11 14:37:50,546 INFO L428 AbstractCegarLoop]: === Iteration 751 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:50,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:50,546 INFO L82 PathProgramCache]: Analyzing trace with hash 573552637, now seen corresponding path program 745 times [2021-03-11 14:37:50,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9087627] [2021-03-11 14:37:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:50,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:50,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:50,559 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:50,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:50,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:50,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:50,599 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:50,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:50,627 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:50,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:50,650 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:50,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:50,679 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:50,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:50,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9087627] [2021-03-11 14:37:50,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:50,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:50,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83324552] [2021-03-11 14:37:50,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:50,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:50,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:50,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:50,708 INFO L87 Difference]: Start difference. First operand 379 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:50,803 INFO L93 Difference]: Finished difference Result 596 states and 1764 transitions. [2021-03-11 14:37:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:50,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:50,805 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:37:50,805 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:37:50,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:50,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:37:50,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 385. [2021-03-11 14:37:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4791666666666665) internal successors, (1336), 384 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1336 transitions. [2021-03-11 14:37:50,811 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1336 transitions. Word has length 22 [2021-03-11 14:37:50,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:50,811 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1336 transitions. [2021-03-11 14:37:50,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:50,811 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1336 transitions. [2021-03-11 14:37:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:50,812 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:50,812 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:50,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable750 [2021-03-11 14:37:50,812 INFO L428 AbstractCegarLoop]: === Iteration 752 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash 728044779, now seen corresponding path program 746 times [2021-03-11 14:37:50,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:50,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576832600] [2021-03-11 14:37:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:50,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:50,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:50,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:50,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:50,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:50,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:50,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:50,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:50,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:50,893 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:50,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:50,916 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:50,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:50,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:50,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:50,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576832600] [2021-03-11 14:37:50,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:50,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:50,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412818057] [2021-03-11 14:37:50,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:50,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:50,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:50,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:50,977 INFO L87 Difference]: Start difference. First operand 385 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:51,051 INFO L93 Difference]: Finished difference Result 594 states and 1759 transitions. [2021-03-11 14:37:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:51,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:51,053 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:37:51,053 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:37:51,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 173.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:37:51,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 384. [2021-03-11 14:37:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4830287206266317) internal successors, (1334), 383 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1334 transitions. [2021-03-11 14:37:51,059 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1334 transitions. Word has length 22 [2021-03-11 14:37:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:51,059 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1334 transitions. [2021-03-11 14:37:51,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1334 transitions. [2021-03-11 14:37:51,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:51,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:51,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:51,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable751 [2021-03-11 14:37:51,060 INFO L428 AbstractCegarLoop]: === Iteration 753 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:51,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1079898903, now seen corresponding path program 747 times [2021-03-11 14:37:51,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:51,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683350392] [2021-03-11 14:37:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:51,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:51,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:51,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:51,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:51,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:51,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:51,113 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:51,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:51,141 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:51,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:51,178 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:51,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:51,208 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:51,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:51,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683350392] [2021-03-11 14:37:51,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:51,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:51,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231472959] [2021-03-11 14:37:51,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:51,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:51,237 INFO L87 Difference]: Start difference. First operand 384 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:51,342 INFO L93 Difference]: Finished difference Result 606 states and 1784 transitions. [2021-03-11 14:37:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:51,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:51,343 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:37:51,343 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:51,344 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 211.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 388. [2021-03-11 14:37:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4651162790697674) internal successors, (1341), 387 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1341 transitions. [2021-03-11 14:37:51,350 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1341 transitions. Word has length 22 [2021-03-11 14:37:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:51,350 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1341 transitions. [2021-03-11 14:37:51,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1341 transitions. [2021-03-11 14:37:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:51,350 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:51,350 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:51,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable752 [2021-03-11 14:37:51,350 INFO L428 AbstractCegarLoop]: === Iteration 754 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1153206315, now seen corresponding path program 748 times [2021-03-11 14:37:51,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:51,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208768106] [2021-03-11 14:37:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:51,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:51,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:51,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:51,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:51,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:51,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:51,404 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:51,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:51,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:51,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:51,469 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:51,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:51,500 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:51,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:51,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:51,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208768106] [2021-03-11 14:37:51,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:51,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:51,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436742620] [2021-03-11 14:37:51,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:51,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:51,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:51,530 INFO L87 Difference]: Start difference. First operand 388 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:51,615 INFO L93 Difference]: Finished difference Result 611 states and 1790 transitions. [2021-03-11 14:37:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:51,617 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:37:51,617 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:51,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 384. [2021-03-11 14:37:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4778067885117494) internal successors, (1332), 383 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1332 transitions. [2021-03-11 14:37:51,624 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1332 transitions. Word has length 22 [2021-03-11 14:37:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:51,624 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1332 transitions. [2021-03-11 14:37:51,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,624 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1332 transitions. [2021-03-11 14:37:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:51,624 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:51,624 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:51,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable753 [2021-03-11 14:37:51,624 INFO L428 AbstractCegarLoop]: === Iteration 755 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:51,625 INFO L82 PathProgramCache]: Analyzing trace with hash -366046809, now seen corresponding path program 749 times [2021-03-11 14:37:51,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:51,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267899251] [2021-03-11 14:37:51,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:51,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:51,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:51,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:51,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:51,655 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:51,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:51,680 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:51,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:51,710 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:51,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:51,745 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:51,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:51,777 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:51,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:51,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267899251] [2021-03-11 14:37:51,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:51,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:51,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679027946] [2021-03-11 14:37:51,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:51,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:51,808 INFO L87 Difference]: Start difference. First operand 384 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:51,888 INFO L93 Difference]: Finished difference Result 600 states and 1768 transitions. [2021-03-11 14:37:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:51,890 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:37:51,890 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:37:51,890 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:51,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:37:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 386. [2021-03-11 14:37:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4675324675324677) internal successors, (1335), 385 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1335 transitions. [2021-03-11 14:37:51,896 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1335 transitions. Word has length 22 [2021-03-11 14:37:51,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:51,896 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1335 transitions. [2021-03-11 14:37:51,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1335 transitions. [2021-03-11 14:37:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:51,897 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:51,897 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:51,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable754 [2021-03-11 14:37:51,897 INFO L428 AbstractCegarLoop]: === Iteration 756 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:51,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -903902387, now seen corresponding path program 750 times [2021-03-11 14:37:51,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:51,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461886504] [2021-03-11 14:37:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:51,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:51,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:51,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:51,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:51,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:51,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:51,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:51,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:51,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:51,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:51,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:52,017 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:52,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:52,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:52,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:52,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461886504] [2021-03-11 14:37:52,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:52,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:52,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56120211] [2021-03-11 14:37:52,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:52,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:52,080 INFO L87 Difference]: Start difference. First operand 386 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:52,158 INFO L93 Difference]: Finished difference Result 607 states and 1780 transitions. [2021-03-11 14:37:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:52,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:52,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:52,159 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:37:52,159 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:37:52,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:37:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 382. [2021-03-11 14:37:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 381 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1327 transitions. [2021-03-11 14:37:52,166 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1327 transitions. Word has length 22 [2021-03-11 14:37:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:52,166 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1327 transitions. [2021-03-11 14:37:52,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1327 transitions. [2021-03-11 14:37:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:52,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:52,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:52,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable755 [2021-03-11 14:37:52,166 INFO L428 AbstractCegarLoop]: === Iteration 757 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:52,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:52,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2038099671, now seen corresponding path program 751 times [2021-03-11 14:37:52,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:52,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517426635] [2021-03-11 14:37:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:52,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:52,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:52,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:52,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:52,196 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:52,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:52,220 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:52,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:52,252 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:52,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:52,276 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:52,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:52,306 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:52,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:52,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:52,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517426635] [2021-03-11 14:37:52,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:52,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:52,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172051697] [2021-03-11 14:37:52,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:52,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:52,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:52,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:52,335 INFO L87 Difference]: Start difference. First operand 382 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:52,431 INFO L93 Difference]: Finished difference Result 591 states and 1752 transitions. [2021-03-11 14:37:52,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:52,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:52,433 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:37:52,433 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:37:52,433 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:37:52,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 384. [2021-03-11 14:37:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.475195822454308) internal successors, (1331), 383 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1331 transitions. [2021-03-11 14:37:52,439 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1331 transitions. Word has length 22 [2021-03-11 14:37:52,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:52,439 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1331 transitions. [2021-03-11 14:37:52,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,439 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1331 transitions. [2021-03-11 14:37:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:52,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:52,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:52,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable756 [2021-03-11 14:37:52,440 INFO L428 AbstractCegarLoop]: === Iteration 758 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash -2102375483, now seen corresponding path program 752 times [2021-03-11 14:37:52,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:52,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140734017] [2021-03-11 14:37:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:52,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:52,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:52,453 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:52,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:52,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:52,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:52,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:52,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:52,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:52,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:52,549 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:52,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:52,580 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:52,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:52,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140734017] [2021-03-11 14:37:52,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:52,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326694515] [2021-03-11 14:37:52,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:52,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:52,616 INFO L87 Difference]: Start difference. First operand 384 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:52,691 INFO L93 Difference]: Finished difference Result 589 states and 1747 transitions. [2021-03-11 14:37:52,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:52,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:52,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:52,692 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:37:52,692 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:37:52,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:52,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:37:52,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 383. [2021-03-11 14:37:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.479057591623037) internal successors, (1329), 382 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1329 transitions. [2021-03-11 14:37:52,699 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1329 transitions. Word has length 22 [2021-03-11 14:37:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:52,699 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1329 transitions. [2021-03-11 14:37:52,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1329 transitions. [2021-03-11 14:37:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:52,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:52,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:52,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable757 [2021-03-11 14:37:52,699 INFO L428 AbstractCegarLoop]: === Iteration 759 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:52,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1162776037, now seen corresponding path program 753 times [2021-03-11 14:37:52,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:52,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78154401] [2021-03-11 14:37:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:52,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:52,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:52,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:52,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:52,729 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:52,753 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:52,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:52,786 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:52,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:52,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:52,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:52,858 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:52,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:52,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78154401] [2021-03-11 14:37:52,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:52,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:52,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779249748] [2021-03-11 14:37:52,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:52,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:52,888 INFO L87 Difference]: Start difference. First operand 383 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:52,983 INFO L93 Difference]: Finished difference Result 598 states and 1767 transitions. [2021-03-11 14:37:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:52,985 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:37:52,985 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:37:52,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 217.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:37:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 386. [2021-03-11 14:37:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.464935064935065) internal successors, (1334), 385 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1334 transitions. [2021-03-11 14:37:52,991 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1334 transitions. Word has length 22 [2021-03-11 14:37:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:52,991 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1334 transitions. [2021-03-11 14:37:52,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1334 transitions. [2021-03-11 14:37:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:52,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:52,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:52,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable758 [2021-03-11 14:37:52,992 INFO L428 AbstractCegarLoop]: === Iteration 760 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:52,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:52,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2080380037, now seen corresponding path program 754 times [2021-03-11 14:37:52,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:52,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069781873] [2021-03-11 14:37:52,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:52,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:52,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:52,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:53,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:53,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:53,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:53,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:53,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:53,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:53,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:53,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:53,117 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:53,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:53,148 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:53,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069781873] [2021-03-11 14:37:53,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:53,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:53,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201356908] [2021-03-11 14:37:53,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:53,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:53,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:53,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:53,177 INFO L87 Difference]: Start difference. First operand 386 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:53,278 INFO L93 Difference]: Finished difference Result 601 states and 1770 transitions. [2021-03-11 14:37:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:53,280 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:37:53,280 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:37:53,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 215.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:37:53,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 383. [2021-03-11 14:37:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4764397905759163) internal successors, (1328), 382 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1328 transitions. [2021-03-11 14:37:53,286 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1328 transitions. Word has length 22 [2021-03-11 14:37:53,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:53,286 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1328 transitions. [2021-03-11 14:37:53,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1328 transitions. [2021-03-11 14:37:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:53,287 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:53,287 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:53,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable759 [2021-03-11 14:37:53,287 INFO L428 AbstractCegarLoop]: === Iteration 761 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:53,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:53,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1686245547, now seen corresponding path program 755 times [2021-03-11 14:37:53,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:53,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331331088] [2021-03-11 14:37:53,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:53,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:53,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:53,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:53,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:53,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:53,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:53,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:53,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:53,372 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:53,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:53,407 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:53,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:53,438 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:53,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:53,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331331088] [2021-03-11 14:37:53,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:53,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:53,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598719515] [2021-03-11 14:37:53,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:53,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:53,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:53,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:53,467 INFO L87 Difference]: Start difference. First operand 383 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:53,541 INFO L93 Difference]: Finished difference Result 592 states and 1752 transitions. [2021-03-11 14:37:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:53,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:53,542 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:37:53,542 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:37:53,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:37:53,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 384. [2021-03-11 14:37:53,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 383 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1329 transitions. [2021-03-11 14:37:53,549 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1329 transitions. Word has length 22 [2021-03-11 14:37:53,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:53,549 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1329 transitions. [2021-03-11 14:37:53,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,549 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1329 transitions. [2021-03-11 14:37:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:53,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:53,549 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:53,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable760 [2021-03-11 14:37:53,549 INFO L428 AbstractCegarLoop]: === Iteration 762 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:53,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:53,549 INFO L82 PathProgramCache]: Analyzing trace with hash 613160167, now seen corresponding path program 756 times [2021-03-11 14:37:53,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:53,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607232450] [2021-03-11 14:37:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:53,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:53,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:53,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:53,579 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:53,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:53,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:53,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:53,635 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:53,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:53,670 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:53,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:53,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:53,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:53,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607232450] [2021-03-11 14:37:53,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:53,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:53,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908391239] [2021-03-11 14:37:53,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:53,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:53,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:53,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:53,729 INFO L87 Difference]: Start difference. First operand 384 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:53,842 INFO L93 Difference]: Finished difference Result 597 states and 1761 transitions. [2021-03-11 14:37:53,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:53,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:53,843 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:37:53,843 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:37:53,843 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:53,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:37:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 382. [2021-03-11 14:37:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4803149606299213) internal successors, (1326), 381 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1326 transitions. [2021-03-11 14:37:53,849 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1326 transitions. Word has length 22 [2021-03-11 14:37:53,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:53,849 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1326 transitions. [2021-03-11 14:37:53,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:53,850 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1326 transitions. [2021-03-11 14:37:53,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:53,850 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:53,850 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:53,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable761 [2021-03-11 14:37:53,850 INFO L428 AbstractCegarLoop]: === Iteration 763 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:53,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:53,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1649056321, now seen corresponding path program 757 times [2021-03-11 14:37:53,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:53,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947822533] [2021-03-11 14:37:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:53,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:53,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:53,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:53,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:53,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:53,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:53,904 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:53,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:53,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:53,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:53,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:54,014 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:54,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:54,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947822533] [2021-03-11 14:37:54,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:54,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:54,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596884673] [2021-03-11 14:37:54,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:54,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:54,043 INFO L87 Difference]: Start difference. First operand 382 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:54,137 INFO L93 Difference]: Finished difference Result 619 states and 1819 transitions. [2021-03-11 14:37:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:54,139 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:37:54,139 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:37:54,139 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 222.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:37:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 390. [2021-03-11 14:37:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.462724935732648) internal successors, (1347), 389 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1347 transitions. [2021-03-11 14:37:54,145 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1347 transitions. Word has length 22 [2021-03-11 14:37:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:54,145 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1347 transitions. [2021-03-11 14:37:54,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1347 transitions. [2021-03-11 14:37:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:54,146 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:54,146 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:54,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable762 [2021-03-11 14:37:54,146 INFO L428 AbstractCegarLoop]: === Iteration 764 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:54,146 INFO L82 PathProgramCache]: Analyzing trace with hash 597245099, now seen corresponding path program 758 times [2021-03-11 14:37:54,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:54,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026033246] [2021-03-11 14:37:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:54,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:54,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:54,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:54,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:54,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:54,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:54,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:54,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:54,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:54,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:54,271 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:54,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:54,301 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:54,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:54,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026033246] [2021-03-11 14:37:54,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:54,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:54,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637968635] [2021-03-11 14:37:54,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:54,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:54,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:54,331 INFO L87 Difference]: Start difference. First operand 390 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:54,425 INFO L93 Difference]: Finished difference Result 622 states and 1822 transitions. [2021-03-11 14:37:54,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:54,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:54,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:54,427 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:37:54,427 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:37:54,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 215.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:37:54,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 387. [2021-03-11 14:37:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4689119170984455) internal successors, (1339), 386 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1339 transitions. [2021-03-11 14:37:54,433 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1339 transitions. Word has length 22 [2021-03-11 14:37:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:54,433 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1339 transitions. [2021-03-11 14:37:54,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1339 transitions. [2021-03-11 14:37:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:54,434 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:54,434 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:54,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable763 [2021-03-11 14:37:54,434 INFO L428 AbstractCegarLoop]: === Iteration 765 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:54,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1061310999, now seen corresponding path program 759 times [2021-03-11 14:37:54,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:54,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319339137] [2021-03-11 14:37:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:54,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:54,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:54,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:54,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:54,464 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:54,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:54,488 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:54,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:54,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:54,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:54,556 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:54,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:54,586 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:54,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:54,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319339137] [2021-03-11 14:37:54,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:54,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:54,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410847241] [2021-03-11 14:37:54,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:54,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:54,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:54,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:54,615 INFO L87 Difference]: Start difference. First operand 387 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:54,710 INFO L93 Difference]: Finished difference Result 622 states and 1821 transitions. [2021-03-11 14:37:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:54,712 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:37:54,712 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:37:54,712 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 211.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:54,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:37:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 391. [2021-03-11 14:37:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4512820512820515) internal successors, (1346), 390 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1346 transitions. [2021-03-11 14:37:54,718 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1346 transitions. Word has length 22 [2021-03-11 14:37:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:54,718 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1346 transitions. [2021-03-11 14:37:54,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1346 transitions. [2021-03-11 14:37:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:54,719 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:54,719 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:54,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable764 [2021-03-11 14:37:54,719 INFO L428 AbstractCegarLoop]: === Iteration 766 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1134618411, now seen corresponding path program 760 times [2021-03-11 14:37:54,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:54,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128311327] [2021-03-11 14:37:54,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:54,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:54,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:54,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:54,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:54,748 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:54,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:54,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:54,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:54,804 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:54,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:54,843 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:54,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:54,874 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:54,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:54,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128311327] [2021-03-11 14:37:54,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:54,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:54,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253736673] [2021-03-11 14:37:54,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:54,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:54,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:54,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:54,904 INFO L87 Difference]: Start difference. First operand 391 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:54,981 INFO L93 Difference]: Finished difference Result 627 states and 1827 transitions. [2021-03-11 14:37:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:54,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:54,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:54,983 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:37:54,983 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:37:54,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:37:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 387. [2021-03-11 14:37:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4585492227979273) internal successors, (1335), 386 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1335 transitions. [2021-03-11 14:37:54,989 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1335 transitions. Word has length 22 [2021-03-11 14:37:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:54,989 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1335 transitions. [2021-03-11 14:37:54,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1335 transitions. [2021-03-11 14:37:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:54,990 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:54,990 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:54,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable765 [2021-03-11 14:37:54,990 INFO L428 AbstractCegarLoop]: === Iteration 767 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:54,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1425192425, now seen corresponding path program 761 times [2021-03-11 14:37:54,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:54,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679094457] [2021-03-11 14:37:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:54,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:54,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:54,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:55,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:55,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:55,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:55,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:55,045 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:55,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:55,077 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:55,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:55,102 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:55,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:55,132 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:55,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:55,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679094457] [2021-03-11 14:37:55,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:55,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:55,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248652421] [2021-03-11 14:37:55,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:55,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:55,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:55,161 INFO L87 Difference]: Start difference. First operand 387 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:55,258 INFO L93 Difference]: Finished difference Result 632 states and 1839 transitions. [2021-03-11 14:37:55,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:55,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:55,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:55,262 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:37:55,262 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:37:55,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 202.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:37:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 395. [2021-03-11 14:37:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4238578680203045) internal successors, (1349), 394 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1349 transitions. [2021-03-11 14:37:55,269 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1349 transitions. Word has length 22 [2021-03-11 14:37:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:55,269 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1349 transitions. [2021-03-11 14:37:55,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1349 transitions. [2021-03-11 14:37:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:55,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:55,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:55,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable766 [2021-03-11 14:37:55,270 INFO L428 AbstractCegarLoop]: === Iteration 768 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1406758399, now seen corresponding path program 762 times [2021-03-11 14:37:55,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:55,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507578417] [2021-03-11 14:37:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:55,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:55,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:55,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:55,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:55,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:55,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:55,325 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:37:55,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:37:55,357 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:55,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:55,381 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:55,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:55,412 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:55,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:55,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507578417] [2021-03-11 14:37:55,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:55,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:55,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875297493] [2021-03-11 14:37:55,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:55,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:55,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:55,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:55,442 INFO L87 Difference]: Start difference. First operand 395 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:55,533 INFO L93 Difference]: Finished difference Result 634 states and 1836 transitions. [2021-03-11 14:37:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:55,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:55,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:55,535 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:37:55,535 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:37:55,535 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:37:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 382. [2021-03-11 14:37:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 381 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1323 transitions. [2021-03-11 14:37:55,541 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1323 transitions. Word has length 22 [2021-03-11 14:37:55,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:55,541 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1323 transitions. [2021-03-11 14:37:55,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,541 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1323 transitions. [2021-03-11 14:37:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:55,541 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:55,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:55,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable767 [2021-03-11 14:37:55,542 INFO L428 AbstractCegarLoop]: === Iteration 769 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:55,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2129144687, now seen corresponding path program 763 times [2021-03-11 14:37:55,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:55,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130702058] [2021-03-11 14:37:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:55,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:55,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:55,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:55,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:55,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:55,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:55,597 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:55,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:55,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:55,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:55,659 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:55,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:55,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:55,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:55,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130702058] [2021-03-11 14:37:55,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:55,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861321316] [2021-03-11 14:37:55,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:55,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:55,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:55,719 INFO L87 Difference]: Start difference. First operand 382 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:55,798 INFO L93 Difference]: Finished difference Result 605 states and 1778 transitions. [2021-03-11 14:37:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:55,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:55,799 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:37:55,799 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:37:55,799 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 184.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:55,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:37:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 386. [2021-03-11 14:37:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4597402597402596) internal successors, (1332), 385 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1332 transitions. [2021-03-11 14:37:55,806 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1332 transitions. Word has length 22 [2021-03-11 14:37:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:55,806 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1332 transitions. [2021-03-11 14:37:55,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1332 transitions. [2021-03-11 14:37:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:55,806 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:55,806 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:55,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable768 [2021-03-11 14:37:55,806 INFO L428 AbstractCegarLoop]: === Iteration 770 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:55,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1056059307, now seen corresponding path program 764 times [2021-03-11 14:37:55,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:55,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138258777] [2021-03-11 14:37:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:55,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:55,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:55,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:55,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:55,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:55,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:55,860 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:55,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:55,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:37:55,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:37:55,922 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:55,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:55,952 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:55,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:55,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138258777] [2021-03-11 14:37:55,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:55,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:55,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429529987] [2021-03-11 14:37:55,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:55,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:55,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:55,981 INFO L87 Difference]: Start difference. First operand 386 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:56,076 INFO L93 Difference]: Finished difference Result 610 states and 1787 transitions. [2021-03-11 14:37:56,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:56,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:56,078 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:37:56,078 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:37:56,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 205.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:56,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:37:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 385. [2021-03-11 14:37:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4635416666666665) internal successors, (1330), 384 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1330 transitions. [2021-03-11 14:37:56,084 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1330 transitions. Word has length 22 [2021-03-11 14:37:56,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:56,084 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1330 transitions. [2021-03-11 14:37:56,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1330 transitions. [2021-03-11 14:37:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:56,084 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:56,084 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:56,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable769 [2021-03-11 14:37:56,085 INFO L428 AbstractCegarLoop]: === Iteration 771 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1541399365, now seen corresponding path program 765 times [2021-03-11 14:37:56,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:56,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715142836] [2021-03-11 14:37:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:56,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:56,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:56,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:56,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:56,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:56,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:56,139 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:56,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:56,166 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:56,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:56,200 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:56,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:56,231 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:56,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:56,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715142836] [2021-03-11 14:37:56,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:56,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:56,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344170754] [2021-03-11 14:37:56,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:56,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:56,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:56,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:56,260 INFO L87 Difference]: Start difference. First operand 385 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:56,333 INFO L93 Difference]: Finished difference Result 608 states and 1782 transitions. [2021-03-11 14:37:56,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:56,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:56,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:56,335 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:37:56,335 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:37:56,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 185.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:37:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 387. [2021-03-11 14:37:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4533678756476682) internal successors, (1333), 386 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1333 transitions. [2021-03-11 14:37:56,341 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1333 transitions. Word has length 22 [2021-03-11 14:37:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:56,341 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1333 transitions. [2021-03-11 14:37:56,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1333 transitions. [2021-03-11 14:37:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:56,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:56,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:56,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable770 [2021-03-11 14:37:56,342 INFO L428 AbstractCegarLoop]: === Iteration 772 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:56,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1003543787, now seen corresponding path program 766 times [2021-03-11 14:37:56,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:56,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565701662] [2021-03-11 14:37:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:56,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:56,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:56,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:56,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:56,372 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:56,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:56,397 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:56,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:56,424 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:56,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:56,458 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:56,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:56,489 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:56,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:56,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:56,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565701662] [2021-03-11 14:37:56,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:56,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:56,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964111418] [2021-03-11 14:37:56,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:56,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:56,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:56,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:56,518 INFO L87 Difference]: Start difference. First operand 387 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:56,598 INFO L93 Difference]: Finished difference Result 615 states and 1794 transitions. [2021-03-11 14:37:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:56,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:56,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:56,599 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:37:56,599 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:37:56,599 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:37:56,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 385. [2021-03-11 14:37:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4583333333333335) internal successors, (1328), 384 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1328 transitions. [2021-03-11 14:37:56,606 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1328 transitions. Word has length 22 [2021-03-11 14:37:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:56,606 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1328 transitions. [2021-03-11 14:37:56,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1328 transitions. [2021-03-11 14:37:56,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:56,606 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:56,606 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:56,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable771 [2021-03-11 14:37:56,606 INFO L428 AbstractCegarLoop]: === Iteration 773 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:56,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1562405573, now seen corresponding path program 767 times [2021-03-11 14:37:56,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:56,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189647166] [2021-03-11 14:37:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:56,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:56,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:56,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:56,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:56,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:56,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:56,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:56,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:56,687 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:56,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:56,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:56,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:56,742 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:56,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:56,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189647166] [2021-03-11 14:37:56,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:56,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:56,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663155455] [2021-03-11 14:37:56,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:56,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:56,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:56,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:56,771 INFO L87 Difference]: Start difference. First operand 385 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:56,870 INFO L93 Difference]: Finished difference Result 624 states and 1816 transitions. [2021-03-11 14:37:56,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:56,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:56,871 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:37:56,871 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:37:56,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:37:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 393. [2021-03-11 14:37:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.423469387755102) internal successors, (1342), 392 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1342 transitions. [2021-03-11 14:37:56,878 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1342 transitions. Word has length 22 [2021-03-11 14:37:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:56,878 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1342 transitions. [2021-03-11 14:37:56,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:56,878 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1342 transitions. [2021-03-11 14:37:56,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:56,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:56,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:56,879 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable772 [2021-03-11 14:37:56,879 INFO L428 AbstractCegarLoop]: === Iteration 774 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:56,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2097635375, now seen corresponding path program 768 times [2021-03-11 14:37:56,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:56,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219198019] [2021-03-11 14:37:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:56,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:56,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:56,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:56,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:56,910 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:56,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:56,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:56,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:56,964 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:56,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:56,988 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:56,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:57,019 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:57,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:57,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219198019] [2021-03-11 14:37:57,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:57,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:57,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814956996] [2021-03-11 14:37:57,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:57,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:57,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:57,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:57,049 INFO L87 Difference]: Start difference. First operand 393 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:57,127 INFO L93 Difference]: Finished difference Result 626 states and 1813 transitions. [2021-03-11 14:37:57,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:57,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:57,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:57,129 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:37:57,129 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:37:57,129 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:37:57,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 379. [2021-03-11 14:37:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4788359788359786) internal successors, (1315), 378 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1315 transitions. [2021-03-11 14:37:57,135 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1315 transitions. Word has length 22 [2021-03-11 14:37:57,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:57,135 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1315 transitions. [2021-03-11 14:37:57,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1315 transitions. [2021-03-11 14:37:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:57,136 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:57,136 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:57,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable773 [2021-03-11 14:37:57,136 INFO L428 AbstractCegarLoop]: === Iteration 775 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:57,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1096975265, now seen corresponding path program 769 times [2021-03-11 14:37:57,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:57,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562599065] [2021-03-11 14:37:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:57,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:57,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:57,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:57,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:57,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:57,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:57,190 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:57,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:57,210 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:57,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:57,235 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:57,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:57,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:57,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:57,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562599065] [2021-03-11 14:37:57,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:57,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:57,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169183258] [2021-03-11 14:37:57,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:57,294 INFO L87 Difference]: Start difference. First operand 379 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:57,397 INFO L93 Difference]: Finished difference Result 563 states and 1683 transitions. [2021-03-11 14:37:57,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:57,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:57,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:57,399 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:37:57,399 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:37:57,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:57,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:37:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 382. [2021-03-11 14:37:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 381 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1323 transitions. [2021-03-11 14:37:57,405 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1323 transitions. Word has length 22 [2021-03-11 14:37:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:57,405 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1323 transitions. [2021-03-11 14:37:57,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1323 transitions. [2021-03-11 14:37:57,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:57,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:57,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:57,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable774 [2021-03-11 14:37:57,405 INFO L428 AbstractCegarLoop]: === Iteration 776 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:57,406 INFO L82 PathProgramCache]: Analyzing trace with hash -942483123, now seen corresponding path program 770 times [2021-03-11 14:37:57,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:57,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821612937] [2021-03-11 14:37:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:57,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:57,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:57,419 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:57,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:57,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:57,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:57,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:57,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:57,479 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:57,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:57,504 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:57,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:57,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:57,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:57,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821612937] [2021-03-11 14:37:57,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:57,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:57,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886331132] [2021-03-11 14:37:57,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:57,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:57,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:57,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:57,565 INFO L87 Difference]: Start difference. First operand 382 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:57,641 INFO L93 Difference]: Finished difference Result 561 states and 1678 transitions. [2021-03-11 14:37:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:57,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:57,642 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:37:57,642 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:37:57,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:57,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:37:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 381. [2021-03-11 14:37:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4763157894736842) internal successors, (1321), 380 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1321 transitions. [2021-03-11 14:37:57,649 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1321 transitions. Word has length 22 [2021-03-11 14:37:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:57,649 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1321 transitions. [2021-03-11 14:37:57,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1321 transitions. [2021-03-11 14:37:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:57,649 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:57,649 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:57,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable775 [2021-03-11 14:37:57,649 INFO L428 AbstractCegarLoop]: === Iteration 777 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1597554177, now seen corresponding path program 771 times [2021-03-11 14:37:57,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:57,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080326350] [2021-03-11 14:37:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:57,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:57,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:57,663 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:57,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:57,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:57,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:57,712 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:57,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:57,737 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:57,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:57,764 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:57,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:57,796 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:57,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080326350] [2021-03-11 14:37:57,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:57,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:57,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491285069] [2021-03-11 14:37:57,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:57,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:57,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:57,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:57,828 INFO L87 Difference]: Start difference. First operand 381 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:57,941 INFO L93 Difference]: Finished difference Result 565 states and 1687 transitions. [2021-03-11 14:37:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:57,943 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:37:57,943 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:37:57,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:57,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:37:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 383. [2021-03-11 14:37:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4659685863874348) internal successors, (1324), 382 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1324 transitions. [2021-03-11 14:37:57,949 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1324 transitions. Word has length 22 [2021-03-11 14:37:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:57,949 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1324 transitions. [2021-03-11 14:37:57,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:57,949 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1324 transitions. [2021-03-11 14:37:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:57,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:57,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:57,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable776 [2021-03-11 14:37:57,950 INFO L428 AbstractCegarLoop]: === Iteration 778 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:57,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:57,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1095012625, now seen corresponding path program 772 times [2021-03-11 14:37:57,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:57,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147873186] [2021-03-11 14:37:57,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:57,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:57,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:57,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:57,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:57,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:57,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:58,004 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:58,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:58,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:58,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:58,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:58,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:58,079 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:58,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:58,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147873186] [2021-03-11 14:37:58,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:58,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:58,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752470667] [2021-03-11 14:37:58,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:58,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:58,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:58,110 INFO L87 Difference]: Start difference. First operand 383 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:58,227 INFO L93 Difference]: Finished difference Result 564 states and 1683 transitions. [2021-03-11 14:37:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:58,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:58,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:58,228 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:37:58,229 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:37:58,229 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:58,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:37:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 381. [2021-03-11 14:37:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.473684210526316) internal successors, (1320), 380 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1320 transitions. [2021-03-11 14:37:58,235 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1320 transitions. Word has length 22 [2021-03-11 14:37:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:58,235 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1320 transitions. [2021-03-11 14:37:58,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1320 transitions. [2021-03-11 14:37:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:58,235 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:58,235 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:58,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable777 [2021-03-11 14:37:58,235 INFO L428 AbstractCegarLoop]: === Iteration 779 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash 151608465, now seen corresponding path program 773 times [2021-03-11 14:37:58,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:58,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353601254] [2021-03-11 14:37:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:58,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:58,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:58,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:58,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:58,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:58,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:58,291 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:58,310 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:58,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:58,336 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:58,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:58,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:58,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:58,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353601254] [2021-03-11 14:37:58,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:58,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:58,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501053869] [2021-03-11 14:37:58,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:58,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:58,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:58,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:58,399 INFO L87 Difference]: Start difference. First operand 381 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:58,475 INFO L93 Difference]: Finished difference Result 560 states and 1675 transitions. [2021-03-11 14:37:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:58,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:58,476 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:37:58,476 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:37:58,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:58,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:37:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 382. [2021-03-11 14:37:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4671916010498687) internal successors, (1321), 381 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1321 transitions. [2021-03-11 14:37:58,482 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1321 transitions. Word has length 22 [2021-03-11 14:37:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:58,482 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1321 transitions. [2021-03-11 14:37:58,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,483 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1321 transitions. [2021-03-11 14:37:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:58,483 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:58,483 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:58,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable778 [2021-03-11 14:37:58,483 INFO L428 AbstractCegarLoop]: === Iteration 780 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1762549423, now seen corresponding path program 774 times [2021-03-11 14:37:58,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:58,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376288212] [2021-03-11 14:37:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:58,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:58,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:58,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:58,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:58,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:58,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:58,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:37:58,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:37:58,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:37:58,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:37:58,587 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:58,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:58,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:58,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:58,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376288212] [2021-03-11 14:37:58,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:58,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:58,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994897629] [2021-03-11 14:37:58,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:58,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:58,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:58,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:58,646 INFO L87 Difference]: Start difference. First operand 382 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:58,759 INFO L93 Difference]: Finished difference Result 561 states and 1676 transitions. [2021-03-11 14:37:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:58,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:58,761 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:37:58,761 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:37:58,761 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:37:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 380. [2021-03-11 14:37:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4775725593667546) internal successors, (1318), 379 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1318 transitions. [2021-03-11 14:37:58,767 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1318 transitions. Word has length 22 [2021-03-11 14:37:58,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:58,767 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1318 transitions. [2021-03-11 14:37:58,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:58,767 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1318 transitions. [2021-03-11 14:37:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:58,768 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:58,768 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:58,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable779 [2021-03-11 14:37:58,768 INFO L428 AbstractCegarLoop]: === Iteration 781 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash 829058813, now seen corresponding path program 775 times [2021-03-11 14:37:58,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:58,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12631182] [2021-03-11 14:37:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:58,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:58,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:58,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:58,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:58,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:58,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:58,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:58,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:58,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:58,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:58,880 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:58,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:58,911 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:58,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:58,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12631182] [2021-03-11 14:37:58,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:58,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:58,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721399829] [2021-03-11 14:37:58,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:58,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:58,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:58,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:58,941 INFO L87 Difference]: Start difference. First operand 380 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:59,045 INFO L93 Difference]: Finished difference Result 568 states and 1693 transitions. [2021-03-11 14:37:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:59,046 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:37:59,046 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:37:59,047 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:37:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 382. [2021-03-11 14:37:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4698162729658795) internal successors, (1322), 381 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1322 transitions. [2021-03-11 14:37:59,053 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1322 transitions. Word has length 22 [2021-03-11 14:37:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:59,053 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1322 transitions. [2021-03-11 14:37:59,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1322 transitions. [2021-03-11 14:37:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:59,053 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:59,053 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:59,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable780 [2021-03-11 14:37:59,053 INFO L428 AbstractCegarLoop]: === Iteration 782 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:59,054 INFO L82 PathProgramCache]: Analyzing trace with hash 983550955, now seen corresponding path program 776 times [2021-03-11 14:37:59,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:59,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358587274] [2021-03-11 14:37:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:59,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:59,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:59,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:59,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:59,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:59,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:59,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:59,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:59,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:37:59,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:37:59,173 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:37:59,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:37:59,205 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:59,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:59,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358587274] [2021-03-11 14:37:59,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:59,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:59,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061800537] [2021-03-11 14:37:59,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:59,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:59,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:59,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:59,235 INFO L87 Difference]: Start difference. First operand 382 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:59,324 INFO L93 Difference]: Finished difference Result 566 states and 1688 transitions. [2021-03-11 14:37:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:59,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:59,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:59,325 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:37:59,325 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:37:59,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:37:59,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 381. [2021-03-11 14:37:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.473684210526316) internal successors, (1320), 380 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1320 transitions. [2021-03-11 14:37:59,331 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1320 transitions. Word has length 22 [2021-03-11 14:37:59,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:59,331 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1320 transitions. [2021-03-11 14:37:59,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1320 transitions. [2021-03-11 14:37:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:59,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:59,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:59,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable781 [2021-03-11 14:37:59,332 INFO L428 AbstractCegarLoop]: === Iteration 783 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:59,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:59,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1923150401, now seen corresponding path program 777 times [2021-03-11 14:37:59,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:59,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192738426] [2021-03-11 14:37:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:59,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:59,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:59,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:59,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:59,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:59,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:59,386 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:59,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:59,419 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:59,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:59,460 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:59,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:59,491 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:59,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192738426] [2021-03-11 14:37:59,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:59,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:59,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941950126] [2021-03-11 14:37:59,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:59,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:59,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:59,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:59,521 INFO L87 Difference]: Start difference. First operand 381 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:59,622 INFO L93 Difference]: Finished difference Result 575 states and 1708 transitions. [2021-03-11 14:37:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:59,624 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:37:59,624 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:37:59,624 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:37:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 384. [2021-03-11 14:37:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4595300261096606) internal successors, (1325), 383 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1325 transitions. [2021-03-11 14:37:59,630 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1325 transitions. Word has length 22 [2021-03-11 14:37:59,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:59,630 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1325 transitions. [2021-03-11 14:37:59,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,630 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1325 transitions. [2021-03-11 14:37:59,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:59,630 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:59,630 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:59,630 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable782 [2021-03-11 14:37:59,630 INFO L428 AbstractCegarLoop]: === Iteration 784 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:59,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:59,631 INFO L82 PathProgramCache]: Analyzing trace with hash 871339179, now seen corresponding path program 778 times [2021-03-11 14:37:59,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:59,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017889519] [2021-03-11 14:37:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:59,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:59,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:59,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:59,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:59,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:59,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:59,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:59,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:37:59,717 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:37:59,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:37:59,758 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:37:59,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:37:59,789 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:37:59,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:37:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:37:59,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017889519] [2021-03-11 14:37:59,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:37:59,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:37:59,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000155091] [2021-03-11 14:37:59,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:37:59,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:37:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:37:59,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:37:59,819 INFO L87 Difference]: Start difference. First operand 384 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:37:59,924 INFO L93 Difference]: Finished difference Result 578 states and 1711 transitions. [2021-03-11 14:37:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:37:59,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:37:59,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:37:59,925 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:37:59,925 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:37:59,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 220.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:37:59,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:37:59,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 381. [2021-03-11 14:37:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.471052631578947) internal successors, (1319), 380 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1319 transitions. [2021-03-11 14:37:59,931 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1319 transitions. Word has length 22 [2021-03-11 14:37:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:37:59,932 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1319 transitions. [2021-03-11 14:37:59,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:37:59,932 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1319 transitions. [2021-03-11 14:37:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:37:59,932 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:37:59,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:37:59,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable783 [2021-03-11 14:37:59,932 INFO L428 AbstractCegarLoop]: === Iteration 785 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:37:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:37:59,932 INFO L82 PathProgramCache]: Analyzing trace with hash 477204689, now seen corresponding path program 779 times [2021-03-11 14:37:59,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:37:59,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828407785] [2021-03-11 14:37:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:37:59,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:37:59,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:37:59,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:37:59,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:37:59,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:37:59,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:37:59,967 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:37:59,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:37:59,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:37:59,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:00,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:00,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:00,063 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:00,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:00,094 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:00,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:00,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:00,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828407785] [2021-03-11 14:38:00,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:00,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:00,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345443293] [2021-03-11 14:38:00,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:00,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:00,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:00,124 INFO L87 Difference]: Start difference. First operand 381 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:00,204 INFO L93 Difference]: Finished difference Result 569 states and 1693 transitions. [2021-03-11 14:38:00,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:00,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:00,205 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:38:00,205 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:38:00,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:38:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 382. [2021-03-11 14:38:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:38:00,212 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:00,212 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:38:00,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:38:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:00,212 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:00,212 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:00,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable784 [2021-03-11 14:38:00,212 INFO L428 AbstractCegarLoop]: === Iteration 786 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:00,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash -595880691, now seen corresponding path program 780 times [2021-03-11 14:38:00,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:00,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346048367] [2021-03-11 14:38:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:00,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:00,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:00,226 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:00,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:00,244 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:00,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:00,270 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:00,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:00,302 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:00,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:00,338 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:00,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:00,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:00,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:00,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346048367] [2021-03-11 14:38:00,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:00,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:00,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558116370] [2021-03-11 14:38:00,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:00,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:00,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:00,400 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:00,505 INFO L93 Difference]: Finished difference Result 574 states and 1702 transitions. [2021-03-11 14:38:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:00,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:00,507 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:38:00,507 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:38:00,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:38:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 380. [2021-03-11 14:38:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.474934036939314) internal successors, (1317), 379 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1317 transitions. [2021-03-11 14:38:00,513 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:00,513 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1317 transitions. [2021-03-11 14:38:00,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1317 transitions. [2021-03-11 14:38:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:00,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:00,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:00,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable785 [2021-03-11 14:38:00,514 INFO L428 AbstractCegarLoop]: === Iteration 787 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:00,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1154655037, now seen corresponding path program 781 times [2021-03-11 14:38:00,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:00,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067496020] [2021-03-11 14:38:00,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:00,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:00,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:00,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:00,545 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:00,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:00,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:00,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:00,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:00,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:00,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:00,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:00,662 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:00,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:00,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067496020] [2021-03-11 14:38:00,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:00,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:00,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847339295] [2021-03-11 14:38:00,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:00,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:00,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:00,694 INFO L87 Difference]: Start difference. First operand 380 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:00,812 INFO L93 Difference]: Finished difference Result 574 states and 1709 transitions. [2021-03-11 14:38:00,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:00,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:00,814 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:38:00,814 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:00,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 384. [2021-03-11 14:38:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:38:00,820 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:00,820 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:38:00,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:38:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:00,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:00,821 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:00,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable786 [2021-03-11 14:38:00,821 INFO L428 AbstractCegarLoop]: === Iteration 788 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:00,821 INFO L82 PathProgramCache]: Analyzing trace with hash 652113485, now seen corresponding path program 782 times [2021-03-11 14:38:00,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:00,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588872289] [2021-03-11 14:38:00,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:00,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:00,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:00,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:00,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:00,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:00,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:00,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:00,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:00,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:00,908 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:00,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:00,933 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:00,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:00,964 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:00,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:00,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588872289] [2021-03-11 14:38:00,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:00,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:00,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030816825] [2021-03-11 14:38:00,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:00,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:00,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:00,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:00,994 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:01,095 INFO L93 Difference]: Finished difference Result 573 states and 1705 transitions. [2021-03-11 14:38:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:01,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:01,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:01,097 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:38:01,097 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:01,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:01,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 382. [2021-03-11 14:38:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4698162729658795) internal successors, (1322), 381 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1322 transitions. [2021-03-11 14:38:01,103 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1322 transitions. Word has length 22 [2021-03-11 14:38:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:01,103 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1322 transitions. [2021-03-11 14:38:01,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1322 transitions. [2021-03-11 14:38:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:01,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:01,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:01,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable787 [2021-03-11 14:38:01,103 INFO L428 AbstractCegarLoop]: === Iteration 789 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:01,104 INFO L82 PathProgramCache]: Analyzing trace with hash -445782817, now seen corresponding path program 783 times [2021-03-11 14:38:01,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:01,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563124755] [2021-03-11 14:38:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:01,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:01,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:01,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:01,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:01,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:01,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:01,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:01,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:01,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:01,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:01,233 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:01,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:01,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:01,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:01,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:01,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563124755] [2021-03-11 14:38:01,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:01,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:01,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803510964] [2021-03-11 14:38:01,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:01,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:01,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:01,295 INFO L87 Difference]: Start difference. First operand 382 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:01,397 INFO L93 Difference]: Finished difference Result 579 states and 1718 transitions. [2021-03-11 14:38:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:01,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:01,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:01,398 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:01,398 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:38:01,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 222.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:38:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 385. [2021-03-11 14:38:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:38:01,405 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:01,405 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:38:01,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:38:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:01,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:01,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:01,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable788 [2021-03-11 14:38:01,405 INFO L428 AbstractCegarLoop]: === Iteration 790 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:01,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1497594039, now seen corresponding path program 784 times [2021-03-11 14:38:01,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:01,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563675610] [2021-03-11 14:38:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:01,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:01,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:01,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:01,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:01,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:01,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:01,461 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:01,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:01,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:01,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:01,536 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:01,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:01,567 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:01,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563675610] [2021-03-11 14:38:01,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:01,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:01,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002870849] [2021-03-11 14:38:01,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:01,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:01,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:01,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:01,597 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:01,702 INFO L93 Difference]: Finished difference Result 582 states and 1721 transitions. [2021-03-11 14:38:01,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:01,703 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:01,704 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:38:01,704 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:38:01,704 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:38:01,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 382. [2021-03-11 14:38:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:38:01,710 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:01,710 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:38:01,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:38:01,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:01,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:01,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:01,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable789 [2021-03-11 14:38:01,711 INFO L428 AbstractCegarLoop]: === Iteration 791 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:01,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1795666315, now seen corresponding path program 785 times [2021-03-11 14:38:01,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:01,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909477650] [2021-03-11 14:38:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:01,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:01,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:01,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:01,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:01,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:01,741 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:01,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:01,766 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:01,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:01,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:01,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:01,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:01,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:01,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:01,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:01,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909477650] [2021-03-11 14:38:01,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:01,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:01,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511008919] [2021-03-11 14:38:01,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:01,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:01,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:01,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:01,904 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:02,007 INFO L93 Difference]: Finished difference Result 576 states and 1709 transitions. [2021-03-11 14:38:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:02,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:02,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:02,009 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:38:02,009 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:38:02,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 226.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:38:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 384. [2021-03-11 14:38:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.454308093994778) internal successors, (1323), 383 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1323 transitions. [2021-03-11 14:38:02,019 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:02,019 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1323 transitions. [2021-03-11 14:38:02,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1323 transitions. [2021-03-11 14:38:02,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:02,019 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:02,019 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:02,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable790 [2021-03-11 14:38:02,019 INFO L428 AbstractCegarLoop]: === Iteration 792 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 103487033, now seen corresponding path program 786 times [2021-03-11 14:38:02,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:02,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524883282] [2021-03-11 14:38:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:02,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:02,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:02,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:02,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:02,050 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:02,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:02,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:02,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:02,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:02,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:02,151 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:02,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:02,182 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:02,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:02,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524883282] [2021-03-11 14:38:02,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:02,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:02,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246003402] [2021-03-11 14:38:02,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:02,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:02,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:02,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:02,213 INFO L87 Difference]: Start difference. First operand 384 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:02,323 INFO L93 Difference]: Finished difference Result 580 states and 1715 transitions. [2021-03-11 14:38:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:02,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:02,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:02,325 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:38:02,325 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:38:02,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:38:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 380. [2021-03-11 14:38:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4722955145118735) internal successors, (1316), 379 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1316 transitions. [2021-03-11 14:38:02,331 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:02,331 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1316 transitions. [2021-03-11 14:38:02,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1316 transitions. [2021-03-11 14:38:02,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:02,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:02,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:02,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable791 [2021-03-11 14:38:02,332 INFO L428 AbstractCegarLoop]: === Iteration 793 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:02,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1634743403, now seen corresponding path program 787 times [2021-03-11 14:38:02,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:02,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778172119] [2021-03-11 14:38:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:02,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:02,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:02,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:02,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:02,363 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:02,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:02,388 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:02,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:02,421 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:02,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:02,447 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:02,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:02,480 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:02,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:02,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778172119] [2021-03-11 14:38:02,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:02,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:02,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615210080] [2021-03-11 14:38:02,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:02,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:02,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:02,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:02,510 INFO L87 Difference]: Start difference. First operand 380 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:02,591 INFO L93 Difference]: Finished difference Result 563 states and 1680 transitions. [2021-03-11 14:38:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:02,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:02,593 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:38:02,593 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:38:02,593 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:38:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 382. [2021-03-11 14:38:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:38:02,599 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:02,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:02,599 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:38:02,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,599 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:38:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:02,599 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:02,599 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:02,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable792 [2021-03-11 14:38:02,599 INFO L428 AbstractCegarLoop]: === Iteration 794 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1049282935, now seen corresponding path program 788 times [2021-03-11 14:38:02,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:02,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960442776] [2021-03-11 14:38:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:02,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:02,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:02,613 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:02,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:02,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:02,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:02,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:02,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:02,688 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:02,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:02,714 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:02,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:02,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:02,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:02,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960442776] [2021-03-11 14:38:02,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:02,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:02,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841012289] [2021-03-11 14:38:02,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:02,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:02,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:02,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:02,777 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:02,879 INFO L93 Difference]: Finished difference Result 564 states and 1681 transitions. [2021-03-11 14:38:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:02,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:02,880 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:38:02,880 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:02,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 381. [2021-03-11 14:38:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.468421052631579) internal successors, (1318), 380 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1318 transitions. [2021-03-11 14:38:02,886 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:02,886 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1318 transitions. [2021-03-11 14:38:02,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1318 transitions. [2021-03-11 14:38:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:02,887 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:02,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:02,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable793 [2021-03-11 14:38:02,887 INFO L428 AbstractCegarLoop]: === Iteration 795 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 34305549, now seen corresponding path program 789 times [2021-03-11 14:38:02,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:02,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522055428] [2021-03-11 14:38:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:02,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:02,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:02,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:02,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:02,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:02,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:02,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:02,950 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:02,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:02,984 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:02,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:03,023 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:03,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:03,057 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:03,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:03,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522055428] [2021-03-11 14:38:03,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:03,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:03,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863156164] [2021-03-11 14:38:03,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:03,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:03,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:03,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:03,088 INFO L87 Difference]: Start difference. First operand 381 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:03,168 INFO L93 Difference]: Finished difference Result 567 states and 1687 transitions. [2021-03-11 14:38:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:03,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:03,170 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:38:03,170 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:38:03,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:03,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:38:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 382. [2021-03-11 14:38:03,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:38:03,176 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:03,176 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:38:03,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:38:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:03,177 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:03,177 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:03,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable794 [2021-03-11 14:38:03,177 INFO L428 AbstractCegarLoop]: === Iteration 796 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:03,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1038779831, now seen corresponding path program 790 times [2021-03-11 14:38:03,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:03,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142967599] [2021-03-11 14:38:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:03,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:03,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:03,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:03,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:03,208 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:03,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:03,233 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:03,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:03,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:03,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:03,302 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:03,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:03,333 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:03,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:03,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142967599] [2021-03-11 14:38:03,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:03,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:03,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632430377] [2021-03-11 14:38:03,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:03,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:03,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:03,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:03,364 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:03,470 INFO L93 Difference]: Finished difference Result 572 states and 1696 transitions. [2021-03-11 14:38:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:03,471 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:03,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:03,472 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:38:03,472 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:38:03,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:38:03,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 381. [2021-03-11 14:38:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4657894736842105) internal successors, (1317), 380 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1317 transitions. [2021-03-11 14:38:03,478 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:03,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:03,478 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1317 transitions. [2021-03-11 14:38:03,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1317 transitions. [2021-03-11 14:38:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:03,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:03,478 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:03,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable795 [2021-03-11 14:38:03,478 INFO L428 AbstractCegarLoop]: === Iteration 797 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:03,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:03,479 INFO L82 PathProgramCache]: Analyzing trace with hash 44808653, now seen corresponding path program 791 times [2021-03-11 14:38:03,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:03,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308657998] [2021-03-11 14:38:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:03,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:03,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:03,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:03,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:03,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:03,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:03,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:03,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:03,567 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:03,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:03,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:03,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:03,640 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:03,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:03,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308657998] [2021-03-11 14:38:03,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:03,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:03,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670802956] [2021-03-11 14:38:03,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:03,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:03,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:03,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:03,671 INFO L87 Difference]: Start difference. First operand 381 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:03,776 INFO L93 Difference]: Finished difference Result 570 states and 1693 transitions. [2021-03-11 14:38:03,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:03,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:03,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:03,778 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:38:03,778 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:38:03,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:38:03,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 383. [2021-03-11 14:38:03,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:38:03,784 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:03,785 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:38:03,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:38:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:03,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:03,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:03,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable796 [2021-03-11 14:38:03,785 INFO L428 AbstractCegarLoop]: === Iteration 798 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1655749611, now seen corresponding path program 792 times [2021-03-11 14:38:03,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:03,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23969215] [2021-03-11 14:38:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:03,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:03,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:03,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:03,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:03,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:03,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:03,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:03,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:03,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:03,872 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:03,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:03,909 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:03,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:03,936 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:03,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:03,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23969215] [2021-03-11 14:38:03,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:03,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:03,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731498905] [2021-03-11 14:38:03,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:03,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:03,963 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:04,074 INFO L93 Difference]: Finished difference Result 574 states and 1699 transitions. [2021-03-11 14:38:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:04,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:04,076 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:38:04,076 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:38:04,076 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:38:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 379. [2021-03-11 14:38:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4761904761904763) internal successors, (1314), 378 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1314 transitions. [2021-03-11 14:38:04,082 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:04,082 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1314 transitions. [2021-03-11 14:38:04,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1314 transitions. [2021-03-11 14:38:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:04,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:04,082 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:04,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable797 [2021-03-11 14:38:04,082 INFO L428 AbstractCegarLoop]: === Iteration 799 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1872855081, now seen corresponding path program 793 times [2021-03-11 14:38:04,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:04,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214787389] [2021-03-11 14:38:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:04,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:04,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:04,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:04,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:04,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:04,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:04,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:04,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:04,160 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:04,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:04,181 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:04,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:04,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:04,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:04,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214787389] [2021-03-11 14:38:04,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:04,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:04,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29099681] [2021-03-11 14:38:04,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:04,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:04,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:04,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:04,235 INFO L87 Difference]: Start difference. First operand 379 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:04,331 INFO L93 Difference]: Finished difference Result 605 states and 1795 transitions. [2021-03-11 14:38:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:04,333 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:38:04,333 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:38:04,333 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:38:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 387. [2021-03-11 14:38:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.471502590673575) internal successors, (1340), 386 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1340 transitions. [2021-03-11 14:38:04,339 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1340 transitions. Word has length 22 [2021-03-11 14:38:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:04,339 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1340 transitions. [2021-03-11 14:38:04,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1340 transitions. [2021-03-11 14:38:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:04,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:04,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:04,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable798 [2021-03-11 14:38:04,340 INFO L428 AbstractCegarLoop]: === Iteration 800 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1919570663, now seen corresponding path program 794 times [2021-03-11 14:38:04,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:04,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850761354] [2021-03-11 14:38:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:04,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:04,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:04,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:04,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:04,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:04,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:04,391 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:04,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:04,420 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:04,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:04,442 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:04,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:04,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:04,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:04,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850761354] [2021-03-11 14:38:04,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:04,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:04,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850420619] [2021-03-11 14:38:04,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:04,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:04,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:04,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:04,496 INFO L87 Difference]: Start difference. First operand 387 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:04,583 INFO L93 Difference]: Finished difference Result 604 states and 1791 transitions. [2021-03-11 14:38:04,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:04,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:04,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:04,584 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:38:04,584 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:38:04,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:38:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 385. [2021-03-11 14:38:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4765625) internal successors, (1335), 384 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1335 transitions. [2021-03-11 14:38:04,590 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1335 transitions. Word has length 22 [2021-03-11 14:38:04,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:04,590 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1335 transitions. [2021-03-11 14:38:04,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1335 transitions. [2021-03-11 14:38:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:04,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:04,591 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:04,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable799 [2021-03-11 14:38:04,591 INFO L428 AbstractCegarLoop]: === Iteration 801 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:04,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash 821674361, now seen corresponding path program 795 times [2021-03-11 14:38:04,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:04,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842959057] [2021-03-11 14:38:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:04,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:04,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:04,603 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:04,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:04,618 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:04,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:04,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:04,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:04,676 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:04,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:04,713 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:04,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:04,740 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:04,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:04,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:04,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842959057] [2021-03-11 14:38:04,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:04,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:04,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69225395] [2021-03-11 14:38:04,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:04,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:04,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:04,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:04,766 INFO L87 Difference]: Start difference. First operand 385 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:04,854 INFO L93 Difference]: Finished difference Result 610 states and 1804 transitions. [2021-03-11 14:38:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:04,855 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:38:04,855 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:38:04,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:38:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 388. [2021-03-11 14:38:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.462532299741602) internal successors, (1340), 387 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1340 transitions. [2021-03-11 14:38:04,862 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1340 transitions. Word has length 22 [2021-03-11 14:38:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:04,862 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1340 transitions. [2021-03-11 14:38:04,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1340 transitions. [2021-03-11 14:38:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:04,862 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:04,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:04,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable800 [2021-03-11 14:38:04,862 INFO L428 AbstractCegarLoop]: === Iteration 802 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:04,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash -230136861, now seen corresponding path program 796 times [2021-03-11 14:38:04,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:04,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702731900] [2021-03-11 14:38:04,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:04,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:04,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:04,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:04,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:04,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:04,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:04,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:04,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:04,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:04,942 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:04,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:04,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:04,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:05,007 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:05,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:05,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702731900] [2021-03-11 14:38:05,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:05,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:05,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118641981] [2021-03-11 14:38:05,034 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:05,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:05,034 INFO L87 Difference]: Start difference. First operand 388 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:05,122 INFO L93 Difference]: Finished difference Result 613 states and 1807 transitions. [2021-03-11 14:38:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:05,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:05,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:05,124 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:38:05,124 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:38:05,124 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:38:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 385. [2021-03-11 14:38:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4713541666666665) internal successors, (1333), 384 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1333 transitions. [2021-03-11 14:38:05,130 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1333 transitions. Word has length 22 [2021-03-11 14:38:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:05,130 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1333 transitions. [2021-03-11 14:38:05,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,130 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1333 transitions. [2021-03-11 14:38:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:05,131 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:05,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:05,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable801 [2021-03-11 14:38:05,131 INFO L428 AbstractCegarLoop]: === Iteration 803 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:05,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1231843803, now seen corresponding path program 797 times [2021-03-11 14:38:05,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:05,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266505315] [2021-03-11 14:38:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:05,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:05,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:05,143 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:05,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:05,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:05,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:05,180 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:05,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:05,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:05,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:05,246 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:05,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:05,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:05,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:05,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266505315] [2021-03-11 14:38:05,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:05,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:05,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668016224] [2021-03-11 14:38:05,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:05,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:05,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:05,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:05,301 INFO L87 Difference]: Start difference. First operand 385 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:05,387 INFO L93 Difference]: Finished difference Result 607 states and 1795 transitions. [2021-03-11 14:38:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:05,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:05,389 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:38:05,389 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:38:05,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:38:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 387. [2021-03-11 14:38:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.461139896373057) internal successors, (1336), 386 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1336 transitions. [2021-03-11 14:38:05,395 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1336 transitions. Word has length 22 [2021-03-11 14:38:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:05,395 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1336 transitions. [2021-03-11 14:38:05,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1336 transitions. [2021-03-11 14:38:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:05,395 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:05,395 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:05,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable802 [2021-03-11 14:38:05,396 INFO L428 AbstractCegarLoop]: === Iteration 804 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:05,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1370944211, now seen corresponding path program 798 times [2021-03-11 14:38:05,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:05,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646641094] [2021-03-11 14:38:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:05,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:05,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:05,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:05,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:05,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:05,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:05,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:05,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:05,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:05,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:05,522 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:05,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:05,549 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:05,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:05,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646641094] [2021-03-11 14:38:05,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:05,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:05,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214670369] [2021-03-11 14:38:05,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:05,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:05,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:05,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:05,576 INFO L87 Difference]: Start difference. First operand 387 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:05,664 INFO L93 Difference]: Finished difference Result 611 states and 1801 transitions. [2021-03-11 14:38:05,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:05,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:05,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:05,666 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:38:05,666 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:38:05,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:38:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 383. [2021-03-11 14:38:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4764397905759163) internal successors, (1328), 382 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1328 transitions. [2021-03-11 14:38:05,672 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:05,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:05,672 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1328 transitions. [2021-03-11 14:38:05,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1328 transitions. [2021-03-11 14:38:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:05,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:05,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:05,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable803 [2021-03-11 14:38:05,673 INFO L428 AbstractCegarLoop]: === Iteration 805 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:05,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:05,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1381876417, now seen corresponding path program 799 times [2021-03-11 14:38:05,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:05,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554766103] [2021-03-11 14:38:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:05,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:05,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:05,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:05,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:05,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:05,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:05,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:05,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:05,749 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:05,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:05,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:05,799 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:05,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:05,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554766103] [2021-03-11 14:38:05,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:05,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:05,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219129551] [2021-03-11 14:38:05,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:05,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:05,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:05,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:05,826 INFO L87 Difference]: Start difference. First operand 383 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:05,916 INFO L93 Difference]: Finished difference Result 610 states and 1803 transitions. [2021-03-11 14:38:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:05,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:05,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:05,918 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:38:05,918 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:38:05,918 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 181.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:38:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 388. [2021-03-11 14:38:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4651162790697674) internal successors, (1341), 387 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1341 transitions. [2021-03-11 14:38:05,924 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1341 transitions. Word has length 22 [2021-03-11 14:38:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:05,924 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1341 transitions. [2021-03-11 14:38:05,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1341 transitions. [2021-03-11 14:38:05,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:05,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:05,925 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:05,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable804 [2021-03-11 14:38:05,925 INFO L428 AbstractCegarLoop]: === Iteration 806 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:05,925 INFO L82 PathProgramCache]: Analyzing trace with hash 879334865, now seen corresponding path program 800 times [2021-03-11 14:38:05,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:05,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52052915] [2021-03-11 14:38:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:05,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:05,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:05,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:05,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:05,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:05,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:05,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:06,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:06,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:06,022 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:06,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:06,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:06,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:06,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52052915] [2021-03-11 14:38:06,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:06,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713655029] [2021-03-11 14:38:06,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:06,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:06,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:06,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:06,076 INFO L87 Difference]: Start difference. First operand 388 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:06,164 INFO L93 Difference]: Finished difference Result 609 states and 1799 transitions. [2021-03-11 14:38:06,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:06,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:06,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:06,166 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:38:06,166 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:38:06,166 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:38:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 386. [2021-03-11 14:38:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.47012987012987) internal successors, (1336), 385 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1336 transitions. [2021-03-11 14:38:06,172 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1336 transitions. Word has length 22 [2021-03-11 14:38:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:06,172 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1336 transitions. [2021-03-11 14:38:06,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1336 transitions. [2021-03-11 14:38:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:06,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:06,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:06,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable805 [2021-03-11 14:38:06,173 INFO L428 AbstractCegarLoop]: === Iteration 807 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash -806306759, now seen corresponding path program 801 times [2021-03-11 14:38:06,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:06,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209510361] [2021-03-11 14:38:06,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:06,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:06,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:06,185 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:06,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:06,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:06,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:06,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:06,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:06,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:06,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:06,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:06,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:06,311 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:06,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:06,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209510361] [2021-03-11 14:38:06,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:06,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:06,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682423327] [2021-03-11 14:38:06,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:06,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:06,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:06,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:06,338 INFO L87 Difference]: Start difference. First operand 386 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:06,427 INFO L93 Difference]: Finished difference Result 618 states and 1817 transitions. [2021-03-11 14:38:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:06,429 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:38:06,429 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:38:06,429 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:38:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 390. [2021-03-11 14:38:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4524421593830334) internal successors, (1343), 389 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1343 transitions. [2021-03-11 14:38:06,435 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1343 transitions. Word has length 22 [2021-03-11 14:38:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:06,435 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1343 transitions. [2021-03-11 14:38:06,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1343 transitions. [2021-03-11 14:38:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:06,436 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:06,436 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:06,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable806 [2021-03-11 14:38:06,436 INFO L428 AbstractCegarLoop]: === Iteration 808 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash -732999347, now seen corresponding path program 802 times [2021-03-11 14:38:06,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:06,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214670276] [2021-03-11 14:38:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:06,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:06,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:06,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:06,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:06,464 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:06,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:06,486 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:06,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:06,512 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:06,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:06,547 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:06,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:06,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:06,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:06,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214670276] [2021-03-11 14:38:06,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:06,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:06,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226875283] [2021-03-11 14:38:06,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:06,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:06,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:06,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:06,602 INFO L87 Difference]: Start difference. First operand 390 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:06,685 INFO L93 Difference]: Finished difference Result 623 states and 1823 transitions. [2021-03-11 14:38:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:06,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:06,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:06,686 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:38:06,686 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:38:06,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:38:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 386. [2021-03-11 14:38:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4623376623376623) internal successors, (1333), 385 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1333 transitions. [2021-03-11 14:38:06,692 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1333 transitions. Word has length 22 [2021-03-11 14:38:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:06,692 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1333 transitions. [2021-03-11 14:38:06,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1333 transitions. [2021-03-11 14:38:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:06,693 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:06,693 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:06,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable807 [2021-03-11 14:38:06,693 INFO L428 AbstractCegarLoop]: === Iteration 809 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:06,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:06,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1970372175, now seen corresponding path program 803 times [2021-03-11 14:38:06,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:06,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465212688] [2021-03-11 14:38:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:06,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:06,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:06,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:06,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:06,721 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:06,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:06,743 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:06,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:06,769 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:06,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:06,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:06,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:06,835 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:06,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:06,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465212688] [2021-03-11 14:38:06,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:06,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:06,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892917357] [2021-03-11 14:38:06,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:06,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:06,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:06,862 INFO L87 Difference]: Start difference. First operand 386 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:06,948 INFO L93 Difference]: Finished difference Result 615 states and 1807 transitions. [2021-03-11 14:38:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:06,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:06,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:06,949 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:38:06,950 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:38:06,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:38:06,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 389. [2021-03-11 14:38:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.448453608247423) internal successors, (1338), 388 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1338 transitions. [2021-03-11 14:38:06,956 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1338 transitions. Word has length 22 [2021-03-11 14:38:06,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:06,956 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1338 transitions. [2021-03-11 14:38:06,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1338 transitions. [2021-03-11 14:38:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:06,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:06,956 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:06,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable808 [2021-03-11 14:38:06,956 INFO L428 AbstractCegarLoop]: === Iteration 810 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:06,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1008437817, now seen corresponding path program 804 times [2021-03-11 14:38:06,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:06,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679165554] [2021-03-11 14:38:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:06,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:06,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:06,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:06,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:06,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:06,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:06,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:07,006 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:07,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:07,033 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:07,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:07,072 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:07,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:07,104 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:07,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:07,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679165554] [2021-03-11 14:38:07,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:07,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:07,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875404235] [2021-03-11 14:38:07,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:07,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:07,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:07,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:07,131 INFO L87 Difference]: Start difference. First operand 389 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:07,201 INFO L93 Difference]: Finished difference Result 621 states and 1816 transitions. [2021-03-11 14:38:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:07,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:07,202 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:38:07,202 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:38:07,202 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 180.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:38:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 383. [2021-03-11 14:38:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.468586387434555) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1325 transitions. [2021-03-11 14:38:07,208 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1325 transitions. Word has length 22 [2021-03-11 14:38:07,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:07,208 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1325 transitions. [2021-03-11 14:38:07,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1325 transitions. [2021-03-11 14:38:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:07,209 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:07,209 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:07,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable809 [2021-03-11 14:38:07,209 INFO L428 AbstractCegarLoop]: === Iteration 811 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:07,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1707472641, now seen corresponding path program 805 times [2021-03-11 14:38:07,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:07,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166908170] [2021-03-11 14:38:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:07,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:07,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:07,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:07,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:07,237 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:07,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:07,259 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:07,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:07,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:07,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:07,326 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:07,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:07,354 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:07,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:07,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166908170] [2021-03-11 14:38:07,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:07,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:07,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819538385] [2021-03-11 14:38:07,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:07,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:07,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:07,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:07,381 INFO L87 Difference]: Start difference. First operand 383 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:07,479 INFO L93 Difference]: Finished difference Result 627 states and 1841 transitions. [2021-03-11 14:38:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:07,481 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:38:07,481 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:38:07,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:07,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:38:07,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 391. [2021-03-11 14:38:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4512820512820515) internal successors, (1346), 390 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1346 transitions. [2021-03-11 14:38:07,487 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1346 transitions. Word has length 22 [2021-03-11 14:38:07,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:07,487 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1346 transitions. [2021-03-11 14:38:07,487 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,487 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1346 transitions. [2021-03-11 14:38:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:07,488 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:07,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:07,488 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable810 [2021-03-11 14:38:07,488 INFO L428 AbstractCegarLoop]: === Iteration 812 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash 655661419, now seen corresponding path program 806 times [2021-03-11 14:38:07,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:07,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239869154] [2021-03-11 14:38:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:07,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:07,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:07,500 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:07,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:07,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:07,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:07,538 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:07,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:07,568 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:07,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:07,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:07,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:07,633 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:07,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:07,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239869154] [2021-03-11 14:38:07,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:07,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:07,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913720844] [2021-03-11 14:38:07,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:07,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:07,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:07,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:07,660 INFO L87 Difference]: Start difference. First operand 391 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:07,747 INFO L93 Difference]: Finished difference Result 630 states and 1844 transitions. [2021-03-11 14:38:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:07,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:07,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:07,749 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:38:07,749 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:38:07,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:38:07,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 388. [2021-03-11 14:38:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4573643410852712) internal successors, (1338), 387 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1338 transitions. [2021-03-11 14:38:07,755 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1338 transitions. Word has length 22 [2021-03-11 14:38:07,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:07,755 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1338 transitions. [2021-03-11 14:38:07,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1338 transitions. [2021-03-11 14:38:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:07,755 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:07,755 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:07,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable811 [2021-03-11 14:38:07,756 INFO L428 AbstractCegarLoop]: === Iteration 813 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1119727319, now seen corresponding path program 807 times [2021-03-11 14:38:07,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:07,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140267658] [2021-03-11 14:38:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:07,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:07,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:07,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:07,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:07,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:07,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:07,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:07,806 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:07,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:07,837 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:07,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:07,873 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:07,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:07,901 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:07,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:07,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140267658] [2021-03-11 14:38:07,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:07,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:07,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837821780] [2021-03-11 14:38:07,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:07,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:07,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:07,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:07,929 INFO L87 Difference]: Start difference. First operand 388 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:08,019 INFO L93 Difference]: Finished difference Result 630 states and 1843 transitions. [2021-03-11 14:38:08,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:08,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:08,020 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:38:08,020 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:38:08,020 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:38:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 392. [2021-03-11 14:38:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4398976982097187) internal successors, (1345), 391 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1345 transitions. [2021-03-11 14:38:08,027 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1345 transitions. Word has length 22 [2021-03-11 14:38:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:08,027 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1345 transitions. [2021-03-11 14:38:08,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1345 transitions. [2021-03-11 14:38:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:08,027 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:08,027 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:08,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable812 [2021-03-11 14:38:08,027 INFO L428 AbstractCegarLoop]: === Iteration 814 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1193034731, now seen corresponding path program 808 times [2021-03-11 14:38:08,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:08,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692656705] [2021-03-11 14:38:08,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:08,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:08,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:08,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:08,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:08,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:08,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:08,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:08,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:08,108 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:08,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:08,144 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:08,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:08,173 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:08,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:08,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692656705] [2021-03-11 14:38:08,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:08,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:08,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766275278] [2021-03-11 14:38:08,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:08,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:08,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:08,200 INFO L87 Difference]: Start difference. First operand 392 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:08,271 INFO L93 Difference]: Finished difference Result 635 states and 1849 transitions. [2021-03-11 14:38:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:08,272 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:08,273 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:38:08,273 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:38:08,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 181.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:38:08,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 388. [2021-03-11 14:38:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.44702842377261) internal successors, (1334), 387 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1334 transitions. [2021-03-11 14:38:08,279 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1334 transitions. Word has length 22 [2021-03-11 14:38:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:08,279 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1334 transitions. [2021-03-11 14:38:08,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1334 transitions. [2021-03-11 14:38:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:08,280 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:08,280 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:08,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable813 [2021-03-11 14:38:08,280 INFO L428 AbstractCegarLoop]: === Iteration 815 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:08,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1366776105, now seen corresponding path program 809 times [2021-03-11 14:38:08,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:08,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492575524] [2021-03-11 14:38:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:08,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:08,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:08,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:08,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:08,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:08,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:08,333 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:08,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:08,363 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:08,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:08,386 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:08,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:08,413 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:08,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:08,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492575524] [2021-03-11 14:38:08,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:08,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:08,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509285279] [2021-03-11 14:38:08,440 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:08,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:08,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:08,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:08,440 INFO L87 Difference]: Start difference. First operand 388 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:08,531 INFO L93 Difference]: Finished difference Result 640 states and 1861 transitions. [2021-03-11 14:38:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:08,532 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:38:08,532 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:38:08,532 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:38:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 396. [2021-03-11 14:38:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4126582278481012) internal successors, (1348), 395 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1348 transitions. [2021-03-11 14:38:08,538 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1348 transitions. Word has length 22 [2021-03-11 14:38:08,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:08,539 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1348 transitions. [2021-03-11 14:38:08,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,539 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1348 transitions. [2021-03-11 14:38:08,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:08,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:08,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:08,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable814 [2021-03-11 14:38:08,539 INFO L428 AbstractCegarLoop]: === Iteration 816 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1348342079, now seen corresponding path program 810 times [2021-03-11 14:38:08,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:08,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974826092] [2021-03-11 14:38:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:08,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:08,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:08,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:08,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:08,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:08,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:08,593 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:08,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:08,626 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:08,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:08,651 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:08,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:08,682 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:08,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:08,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974826092] [2021-03-11 14:38:08,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:08,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:08,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102285241] [2021-03-11 14:38:08,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:08,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:08,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:08,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:08,712 INFO L87 Difference]: Start difference. First operand 396 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:08,795 INFO L93 Difference]: Finished difference Result 642 states and 1858 transitions. [2021-03-11 14:38:08,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:08,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:08,797 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:38:08,797 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:38:08,797 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:38:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 383. [2021-03-11 14:38:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4581151832460733) internal successors, (1321), 382 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1321 transitions. [2021-03-11 14:38:08,803 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:08,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:08,803 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1321 transitions. [2021-03-11 14:38:08,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1321 transitions. [2021-03-11 14:38:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:08,804 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:08,804 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:08,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable815 [2021-03-11 14:38:08,804 INFO L428 AbstractCegarLoop]: === Iteration 817 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1769425561, now seen corresponding path program 811 times [2021-03-11 14:38:08,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:08,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912086611] [2021-03-11 14:38:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:08,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:08,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:08,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:08,817 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:08,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:08,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:08,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:08,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:08,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:08,898 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:08,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:08,939 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:08,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:08,969 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:08,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:08,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912086611] [2021-03-11 14:38:08,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:08,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:08,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053033068] [2021-03-11 14:38:08,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:08,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:08,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:08,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:08,999 INFO L87 Difference]: Start difference. First operand 383 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:09,109 INFO L93 Difference]: Finished difference Result 620 states and 1818 transitions. [2021-03-11 14:38:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:09,111 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:38:09,111 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:38:09,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:38:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 389. [2021-03-11 14:38:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.443298969072165) internal successors, (1336), 388 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1336 transitions. [2021-03-11 14:38:09,117 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1336 transitions. Word has length 22 [2021-03-11 14:38:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:09,117 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1336 transitions. [2021-03-11 14:38:09,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1336 transitions. [2021-03-11 14:38:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:09,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:09,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:09,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable816 [2021-03-11 14:38:09,118 INFO L428 AbstractCegarLoop]: === Iteration 818 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash 833362453, now seen corresponding path program 812 times [2021-03-11 14:38:09,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:09,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874167412] [2021-03-11 14:38:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:09,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:09,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:09,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:09,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:09,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:09,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:09,172 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:09,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:09,204 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:09,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:09,243 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:09,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:09,271 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:09,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:09,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874167412] [2021-03-11 14:38:09,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:09,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:09,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164273299] [2021-03-11 14:38:09,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:09,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:09,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:09,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:09,299 INFO L87 Difference]: Start difference. First operand 389 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:09,402 INFO L93 Difference]: Finished difference Result 624 states and 1824 transitions. [2021-03-11 14:38:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:09,404 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:38:09,404 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:38:09,404 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:09,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:38:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 387. [2021-03-11 14:38:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.448186528497409) internal successors, (1331), 386 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1331 transitions. [2021-03-11 14:38:09,410 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:09,410 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1331 transitions. [2021-03-11 14:38:09,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1331 transitions. [2021-03-11 14:38:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:09,411 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:09,411 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:09,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable817 [2021-03-11 14:38:09,411 INFO L428 AbstractCegarLoop]: === Iteration 819 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:09,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:09,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1234195759, now seen corresponding path program 813 times [2021-03-11 14:38:09,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498875308] [2021-03-11 14:38:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:09,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:09,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:09,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:09,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:09,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:09,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:09,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:09,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:09,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:09,552 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:09,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:09,588 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:09,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:09,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498875308] [2021-03-11 14:38:09,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:09,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:09,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428377423] [2021-03-11 14:38:09,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:09,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:09,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:09,622 INFO L87 Difference]: Start difference. First operand 387 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:09,745 INFO L93 Difference]: Finished difference Result 623 states and 1821 transitions. [2021-03-11 14:38:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:09,746 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:38:09,747 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:38:09,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:09,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:38:09,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 390. [2021-03-11 14:38:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4344473007712084) internal successors, (1336), 389 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1336 transitions. [2021-03-11 14:38:09,753 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1336 transitions. Word has length 22 [2021-03-11 14:38:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:09,753 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1336 transitions. [2021-03-11 14:38:09,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1336 transitions. [2021-03-11 14:38:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:09,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:09,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:09,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable818 [2021-03-11 14:38:09,754 INFO L428 AbstractCegarLoop]: === Iteration 820 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:09,754 INFO L82 PathProgramCache]: Analyzing trace with hash 81961545, now seen corresponding path program 814 times [2021-03-11 14:38:09,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:09,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381709129] [2021-03-11 14:38:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:09,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:09,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:09,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:09,771 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:09,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:09,797 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:09,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:09,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:09,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:09,863 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:09,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:09,911 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:09,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:09,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:09,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:09,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381709129] [2021-03-11 14:38:09,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:09,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:09,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442419797] [2021-03-11 14:38:09,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:09,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:09,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:09,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:09,980 INFO L87 Difference]: Start difference. First operand 390 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:10,072 INFO L93 Difference]: Finished difference Result 629 states and 1830 transitions. [2021-03-11 14:38:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:10,074 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:38:10,074 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:38:10,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 234.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:38:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 387. [2021-03-11 14:38:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4404145077720205) internal successors, (1328), 386 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1328 transitions. [2021-03-11 14:38:10,080 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:10,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:10,080 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1328 transitions. [2021-03-11 14:38:10,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,081 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1328 transitions. [2021-03-11 14:38:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:10,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:10,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:10,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable819 [2021-03-11 14:38:10,081 INFO L428 AbstractCegarLoop]: === Iteration 821 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:10,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:10,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1315434083, now seen corresponding path program 815 times [2021-03-11 14:38:10,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:10,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45141861] [2021-03-11 14:38:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:10,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:10,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:10,095 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:10,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:10,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:10,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:10,143 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:10,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:10,182 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:10,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:10,212 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:10,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:10,247 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:10,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:10,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45141861] [2021-03-11 14:38:10,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:10,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:10,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804646267] [2021-03-11 14:38:10,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:10,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:10,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:10,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:10,278 INFO L87 Difference]: Start difference. First operand 387 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:10,415 INFO L93 Difference]: Finished difference Result 636 states and 1847 transitions. [2021-03-11 14:38:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:10,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:10,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:10,417 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:38:10,417 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:38:10,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:38:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 395. [2021-03-11 14:38:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4060913705583755) internal successors, (1342), 394 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1342 transitions. [2021-03-11 14:38:10,423 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1342 transitions. Word has length 22 [2021-03-11 14:38:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:10,423 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1342 transitions. [2021-03-11 14:38:10,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1342 transitions. [2021-03-11 14:38:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:10,424 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:10,424 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:10,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable820 [2021-03-11 14:38:10,424 INFO L428 AbstractCegarLoop]: === Iteration 822 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1040530897, now seen corresponding path program 816 times [2021-03-11 14:38:10,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:10,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320266342] [2021-03-11 14:38:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:10,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:10,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:10,438 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:10,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:10,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:10,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:10,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:10,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:10,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:10,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:10,554 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:10,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:10,588 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:10,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:10,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320266342] [2021-03-11 14:38:10,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:10,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:10,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679955595] [2021-03-11 14:38:10,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:10,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:10,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:10,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:10,622 INFO L87 Difference]: Start difference. First operand 395 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:10,723 INFO L93 Difference]: Finished difference Result 638 states and 1844 transitions. [2021-03-11 14:38:10,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:10,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:10,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:10,725 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:38:10,725 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:38:10,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 211.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:10,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:38:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 379. [2021-03-11 14:38:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4682539682539684) internal successors, (1311), 378 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1311 transitions. [2021-03-11 14:38:10,731 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1311 transitions. Word has length 22 [2021-03-11 14:38:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:10,731 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1311 transitions. [2021-03-11 14:38:10,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:10,731 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1311 transitions. [2021-03-11 14:38:10,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:10,732 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:10,732 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:10,732 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable821 [2021-03-11 14:38:10,732 INFO L428 AbstractCegarLoop]: === Iteration 823 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:10,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1815252441, now seen corresponding path program 817 times [2021-03-11 14:38:10,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:10,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596210079] [2021-03-11 14:38:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:10,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:10,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:10,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:10,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:10,767 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:10,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:10,795 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:10,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:10,833 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:10,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:10,861 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:10,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:10,896 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:10,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:10,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596210079] [2021-03-11 14:38:10,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:10,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:10,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259956787] [2021-03-11 14:38:10,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:10,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:10,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:10,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:10,930 INFO L87 Difference]: Start difference. First operand 379 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:11,012 INFO L93 Difference]: Finished difference Result 582 states and 1724 transitions. [2021-03-11 14:38:11,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:11,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:11,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:11,014 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:38:11,014 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:38:11,014 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:38:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 384. [2021-03-11 14:38:11,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.462140992167102) internal successors, (1326), 383 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1326 transitions. [2021-03-11 14:38:11,021 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:11,021 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1326 transitions. [2021-03-11 14:38:11,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1326 transitions. [2021-03-11 14:38:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:11,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:11,021 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:11,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable822 [2021-03-11 14:38:11,021 INFO L428 AbstractCegarLoop]: === Iteration 824 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash -204311483, now seen corresponding path program 818 times [2021-03-11 14:38:11,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:11,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315550917] [2021-03-11 14:38:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:11,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:11,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:11,035 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:11,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:11,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:11,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:11,081 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:11,119 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:11,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:11,148 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:11,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:11,183 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:11,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:11,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315550917] [2021-03-11 14:38:11,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:11,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:11,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658266964] [2021-03-11 14:38:11,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:11,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:11,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:11,225 INFO L87 Difference]: Start difference. First operand 384 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:11,335 INFO L93 Difference]: Finished difference Result 583 states and 1725 transitions. [2021-03-11 14:38:11,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:11,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:11,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:11,337 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:38:11,337 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:38:11,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 240.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:38:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 383. [2021-03-11 14:38:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4659685863874348) internal successors, (1324), 382 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1324 transitions. [2021-03-11 14:38:11,343 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:11,343 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1324 transitions. [2021-03-11 14:38:11,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1324 transitions. [2021-03-11 14:38:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:11,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:11,344 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:11,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable823 [2021-03-11 14:38:11,344 INFO L428 AbstractCegarLoop]: === Iteration 825 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:11,344 INFO L82 PathProgramCache]: Analyzing trace with hash 879277001, now seen corresponding path program 819 times [2021-03-11 14:38:11,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:11,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484131688] [2021-03-11 14:38:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:11,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:11,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:11,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:11,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:11,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:11,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:11,410 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:11,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:11,452 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:11,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:11,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:11,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:11,527 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:11,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:11,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484131688] [2021-03-11 14:38:11,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:11,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:11,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108861557] [2021-03-11 14:38:11,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:11,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:11,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:11,560 INFO L87 Difference]: Start difference. First operand 383 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:11,649 INFO L93 Difference]: Finished difference Result 586 states and 1731 transitions. [2021-03-11 14:38:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:11,651 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:38:11,651 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:38:11,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:38:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 384. [2021-03-11 14:38:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4595300261096606) internal successors, (1325), 383 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1325 transitions. [2021-03-11 14:38:11,657 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1325 transitions. Word has length 22 [2021-03-11 14:38:11,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:11,657 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1325 transitions. [2021-03-11 14:38:11,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1325 transitions. [2021-03-11 14:38:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:11,658 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:11,658 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:11,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable824 [2021-03-11 14:38:11,658 INFO L428 AbstractCegarLoop]: === Iteration 826 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:11,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:11,658 INFO L82 PathProgramCache]: Analyzing trace with hash -193808379, now seen corresponding path program 820 times [2021-03-11 14:38:11,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:11,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893964646] [2021-03-11 14:38:11,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:11,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:11,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:11,671 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:11,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:11,691 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:11,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:11,719 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:11,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:11,755 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:11,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:11,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:11,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:11,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:11,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:11,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893964646] [2021-03-11 14:38:11,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:11,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:11,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865572078] [2021-03-11 14:38:11,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:11,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:11,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:11,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:11,858 INFO L87 Difference]: Start difference. First operand 384 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:11,981 INFO L93 Difference]: Finished difference Result 591 states and 1740 transitions. [2021-03-11 14:38:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:11,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:11,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:11,983 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:38:11,983 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:38:11,983 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 234.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:38:11,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 383. [2021-03-11 14:38:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4633507853403143) internal successors, (1323), 382 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1323 transitions. [2021-03-11 14:38:11,990 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:11,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:11,990 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1323 transitions. [2021-03-11 14:38:11,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1323 transitions. [2021-03-11 14:38:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:11,990 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:11,990 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:11,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable825 [2021-03-11 14:38:11,990 INFO L428 AbstractCegarLoop]: === Iteration 827 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:11,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:11,990 INFO L82 PathProgramCache]: Analyzing trace with hash 889780105, now seen corresponding path program 821 times [2021-03-11 14:38:11,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:11,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662403714] [2021-03-11 14:38:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:11,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:12,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:12,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:12,025 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:12,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:12,054 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:12,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:12,092 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:12,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:12,142 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:12,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:12,180 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:12,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:12,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662403714] [2021-03-11 14:38:12,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:12,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:12,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473524567] [2021-03-11 14:38:12,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:12,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:12,213 INFO L87 Difference]: Start difference. First operand 383 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:12,320 INFO L93 Difference]: Finished difference Result 589 states and 1737 transitions. [2021-03-11 14:38:12,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:12,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:12,322 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:38:12,322 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:38:12,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:12,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:38:12,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 385. [2021-03-11 14:38:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.453125) internal successors, (1326), 384 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1326 transitions. [2021-03-11 14:38:12,328 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:12,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:12,328 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1326 transitions. [2021-03-11 14:38:12,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,328 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1326 transitions. [2021-03-11 14:38:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:12,329 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:12,329 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:12,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable826 [2021-03-11 14:38:12,329 INFO L428 AbstractCegarLoop]: === Iteration 828 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:12,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1794246233, now seen corresponding path program 822 times [2021-03-11 14:38:12,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:12,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428695820] [2021-03-11 14:38:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:12,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:12,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:12,343 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:12,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:12,364 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:12,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:12,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:12,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:12,430 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:12,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:12,473 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:12,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:12,508 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:12,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:12,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428695820] [2021-03-11 14:38:12,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:12,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:12,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484629610] [2021-03-11 14:38:12,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:12,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:12,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:12,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:12,542 INFO L87 Difference]: Start difference. First operand 385 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:12,652 INFO L93 Difference]: Finished difference Result 593 states and 1743 transitions. [2021-03-11 14:38:12,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:12,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:12,654 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:38:12,654 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:38:12,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 249.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:38:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 382. [2021-03-11 14:38:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4671916010498687) internal successors, (1321), 381 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1321 transitions. [2021-03-11 14:38:12,660 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:12,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:12,660 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1321 transitions. [2021-03-11 14:38:12,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,660 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1321 transitions. [2021-03-11 14:38:12,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:12,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:12,661 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:12,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable827 [2021-03-11 14:38:12,661 INFO L428 AbstractCegarLoop]: === Iteration 829 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1439479057, now seen corresponding path program 823 times [2021-03-11 14:38:12,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:12,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249625736] [2021-03-11 14:38:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:12,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:12,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:12,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:12,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:12,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:12,695 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:12,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:12,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:12,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:12,763 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:12,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:12,791 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:12,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:12,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:12,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:12,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249625736] [2021-03-11 14:38:12,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:12,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:12,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201401038] [2021-03-11 14:38:12,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:12,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:12,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:12,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:12,857 INFO L87 Difference]: Start difference. First operand 382 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:12,943 INFO L93 Difference]: Finished difference Result 587 states and 1733 transitions. [2021-03-11 14:38:12,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:12,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:12,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:12,945 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:12,945 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:38:12,945 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 208.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:38:12,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 385. [2021-03-11 14:38:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4583333333333335) internal successors, (1328), 384 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1328 transitions. [2021-03-11 14:38:12,952 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:12,952 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1328 transitions. [2021-03-11 14:38:12,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1328 transitions. [2021-03-11 14:38:12,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:12,952 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:12,952 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:12,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable828 [2021-03-11 14:38:12,952 INFO L428 AbstractCegarLoop]: === Iteration 830 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:12,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1244547281, now seen corresponding path program 824 times [2021-03-11 14:38:12,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:12,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569611619] [2021-03-11 14:38:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:12,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:12,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:12,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:12,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:12,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:12,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:12,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:13,018 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:13,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:13,056 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:13,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:13,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:13,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:13,120 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:13,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:13,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569611619] [2021-03-11 14:38:13,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:13,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:13,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192839867] [2021-03-11 14:38:13,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:13,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:13,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:13,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:13,151 INFO L87 Difference]: Start difference. First operand 385 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:13,264 INFO L93 Difference]: Finished difference Result 588 states and 1734 transitions. [2021-03-11 14:38:13,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:13,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:13,266 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:38:13,266 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:38:13,266 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:38:13,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 384. [2021-03-11 14:38:13,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.462140992167102) internal successors, (1326), 383 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1326 transitions. [2021-03-11 14:38:13,272 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:13,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:13,272 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1326 transitions. [2021-03-11 14:38:13,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,272 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1326 transitions. [2021-03-11 14:38:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:13,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:13,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:13,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable829 [2021-03-11 14:38:13,273 INFO L428 AbstractCegarLoop]: === Iteration 831 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:13,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:13,273 INFO L82 PathProgramCache]: Analyzing trace with hash -748704119, now seen corresponding path program 825 times [2021-03-11 14:38:13,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:13,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594403654] [2021-03-11 14:38:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:13,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:13,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:13,288 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:13,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:13,308 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:13,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:13,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:13,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:13,375 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:13,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:13,413 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:13,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:13,443 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:13,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:13,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594403654] [2021-03-11 14:38:13,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:13,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:13,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934842879] [2021-03-11 14:38:13,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:13,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:13,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:13,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:13,471 INFO L87 Difference]: Start difference. First operand 384 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:13,539 INFO L93 Difference]: Finished difference Result 594 states and 1745 transitions. [2021-03-11 14:38:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:13,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:13,540 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:38:13,540 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:38:13,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:13,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:38:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 386. [2021-03-11 14:38:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.451948051948052) internal successors, (1329), 385 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1329 transitions. [2021-03-11 14:38:13,546 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1329 transitions. Word has length 22 [2021-03-11 14:38:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:13,546 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1329 transitions. [2021-03-11 14:38:13,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1329 transitions. [2021-03-11 14:38:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:13,547 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:13,547 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:13,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable830 [2021-03-11 14:38:13,547 INFO L428 AbstractCegarLoop]: === Iteration 832 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:13,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1286559697, now seen corresponding path program 826 times [2021-03-11 14:38:13,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:13,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951125982] [2021-03-11 14:38:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:13,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:13,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:13,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:13,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:13,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:13,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:13,599 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:13,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:13,637 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:13,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:13,674 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:13,712 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:13,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951125982] [2021-03-11 14:38:13,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:13,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:13,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488595031] [2021-03-11 14:38:13,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:13,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:13,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:13,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:13,749 INFO L87 Difference]: Start difference. First operand 386 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:13,846 INFO L93 Difference]: Finished difference Result 601 states and 1757 transitions. [2021-03-11 14:38:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:13,848 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:38:13,848 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:38:13,848 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:38:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 384. [2021-03-11 14:38:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4569190600522193) internal successors, (1324), 383 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1324 transitions. [2021-03-11 14:38:13,854 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:13,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:13,854 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1324 transitions. [2021-03-11 14:38:13,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1324 transitions. [2021-03-11 14:38:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:13,855 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:13,855 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:13,855 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable831 [2021-03-11 14:38:13,855 INFO L428 AbstractCegarLoop]: === Iteration 833 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:13,855 INFO L82 PathProgramCache]: Analyzing trace with hash -738201015, now seen corresponding path program 827 times [2021-03-11 14:38:13,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:13,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048453482] [2021-03-11 14:38:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:13,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:13,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:13,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:13,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:13,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:13,890 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:13,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:13,918 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:13,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:13,957 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:13,997 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:13,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:14,025 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:14,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:14,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048453482] [2021-03-11 14:38:14,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:14,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:14,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782721370] [2021-03-11 14:38:14,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:14,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:14,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:14,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:14,053 INFO L87 Difference]: Start difference. First operand 384 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:14,153 INFO L93 Difference]: Finished difference Result 597 states and 1750 transitions. [2021-03-11 14:38:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:14,154 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:38:14,154 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:38:14,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:14,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:38:14,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 387. [2021-03-11 14:38:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.44300518134715) internal successors, (1329), 386 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1329 transitions. [2021-03-11 14:38:14,163 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1329 transitions. Word has length 22 [2021-03-11 14:38:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:14,163 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1329 transitions. [2021-03-11 14:38:14,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1329 transitions. [2021-03-11 14:38:14,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:14,164 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:14,164 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:14,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable832 [2021-03-11 14:38:14,164 INFO L428 AbstractCegarLoop]: === Iteration 834 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:14,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1407969745, now seen corresponding path program 828 times [2021-03-11 14:38:14,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:14,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763703820] [2021-03-11 14:38:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:14,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:14,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:14,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:14,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:14,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:14,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:14,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:14,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:14,266 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:14,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:14,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:14,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:14,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:14,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:14,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763703820] [2021-03-11 14:38:14,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:14,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:14,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886156119] [2021-03-11 14:38:14,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:14,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:14,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:14,380 INFO L87 Difference]: Start difference. First operand 387 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:14,468 INFO L93 Difference]: Finished difference Result 603 states and 1759 transitions. [2021-03-11 14:38:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:14,470 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:38:14,470 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:38:14,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 226.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:38:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 382. [2021-03-11 14:38:14,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:38:14,476 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:14,476 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:38:14,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:38:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:14,477 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:14,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:14,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable833 [2021-03-11 14:38:14,477 INFO L428 AbstractCegarLoop]: === Iteration 835 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:14,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1765075281, now seen corresponding path program 829 times [2021-03-11 14:38:14,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:14,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56346077] [2021-03-11 14:38:14,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:14,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:14,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:14,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:14,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:14,513 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:14,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:14,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:14,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:14,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:14,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:14,614 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:14,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:14,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:14,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:14,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56346077] [2021-03-11 14:38:14,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:14,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:14,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752152381] [2021-03-11 14:38:14,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:14,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:14,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:14,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:14,703 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:14,790 INFO L93 Difference]: Finished difference Result 601 states and 1762 transitions. [2021-03-11 14:38:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:14,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:14,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:14,792 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:38:14,792 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:38:14,792 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:14,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:38:14,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 386. [2021-03-11 14:38:14,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.449350649350649) internal successors, (1328), 385 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1328 transitions. [2021-03-11 14:38:14,798 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:14,798 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1328 transitions. [2021-03-11 14:38:14,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1328 transitions. [2021-03-11 14:38:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:14,799 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:14,799 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:14,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable834 [2021-03-11 14:38:14,799 INFO L428 AbstractCegarLoop]: === Iteration 836 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:14,799 INFO L82 PathProgramCache]: Analyzing trace with hash 691989901, now seen corresponding path program 830 times [2021-03-11 14:38:14,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:14,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467021377] [2021-03-11 14:38:14,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:14,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:14,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:14,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:14,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:14,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:14,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:14,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:14,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:14,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:14,879 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:14,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:14,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:14,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:14,939 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:14,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:14,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467021377] [2021-03-11 14:38:14,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:14,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:14,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802351051] [2021-03-11 14:38:14,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:14,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:14,967 INFO L87 Difference]: Start difference. First operand 386 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:15,078 INFO L93 Difference]: Finished difference Result 606 states and 1771 transitions. [2021-03-11 14:38:15,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:15,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:15,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:15,080 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:38:15,080 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:38:15,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:15,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:38:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 385. [2021-03-11 14:38:15,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.453125) internal successors, (1326), 384 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1326 transitions. [2021-03-11 14:38:15,087 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:15,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:15,087 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1326 transitions. [2021-03-11 14:38:15,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,087 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1326 transitions. [2021-03-11 14:38:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:15,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:15,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:15,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable835 [2021-03-11 14:38:15,087 INFO L428 AbstractCegarLoop]: === Iteration 837 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1177329959, now seen corresponding path program 831 times [2021-03-11 14:38:15,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:15,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806847848] [2021-03-11 14:38:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:15,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:15,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:15,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:15,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:15,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:15,154 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:15,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:15,187 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:15,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:15,228 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:15,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:15,264 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:15,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:15,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806847848] [2021-03-11 14:38:15,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:15,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:15,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555246491] [2021-03-11 14:38:15,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:15,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:15,298 INFO L87 Difference]: Start difference. First operand 385 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:15,371 INFO L93 Difference]: Finished difference Result 604 states and 1766 transitions. [2021-03-11 14:38:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:15,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:15,372 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:38:15,372 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:38:15,373 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 215.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:15,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:38:15,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 387. [2021-03-11 14:38:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.44300518134715) internal successors, (1329), 386 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1329 transitions. [2021-03-11 14:38:15,379 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1329 transitions. Word has length 22 [2021-03-11 14:38:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:15,379 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1329 transitions. [2021-03-11 14:38:15,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1329 transitions. [2021-03-11 14:38:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:15,379 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:15,379 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:15,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable836 [2021-03-11 14:38:15,379 INFO L428 AbstractCegarLoop]: === Iteration 838 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:15,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:15,379 INFO L82 PathProgramCache]: Analyzing trace with hash 639474381, now seen corresponding path program 832 times [2021-03-11 14:38:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:15,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613513238] [2021-03-11 14:38:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:15,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:15,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:15,392 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:15,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:15,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:15,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:15,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:15,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:15,456 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:15,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:15,487 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:15,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:15,518 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:15,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:15,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613513238] [2021-03-11 14:38:15,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:15,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:15,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902356599] [2021-03-11 14:38:15,549 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:15,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:15,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:15,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:15,550 INFO L87 Difference]: Start difference. First operand 387 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:15,646 INFO L93 Difference]: Finished difference Result 611 states and 1778 transitions. [2021-03-11 14:38:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:15,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:15,648 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:38:15,648 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:38:15,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 185.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:15,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:38:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 385. [2021-03-11 14:38:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4479166666666665) internal successors, (1324), 384 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1324 transitions. [2021-03-11 14:38:15,655 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:15,655 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1324 transitions. [2021-03-11 14:38:15,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1324 transitions. [2021-03-11 14:38:15,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:15,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:15,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:15,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable837 [2021-03-11 14:38:15,655 INFO L428 AbstractCegarLoop]: === Iteration 839 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:15,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:15,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1198336167, now seen corresponding path program 833 times [2021-03-11 14:38:15,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:15,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235280366] [2021-03-11 14:38:15,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:15,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:15,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:15,669 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:15,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:15,688 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:15,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:15,718 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:15,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:15,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:15,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:15,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:15,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:15,801 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:15,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:15,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235280366] [2021-03-11 14:38:15,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:15,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:15,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552840825] [2021-03-11 14:38:15,830 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:15,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:15,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:15,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:15,830 INFO L87 Difference]: Start difference. First operand 385 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:15,920 INFO L93 Difference]: Finished difference Result 620 states and 1800 transitions. [2021-03-11 14:38:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:15,921 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:38:15,921 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:38:15,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:15,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:38:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 393. [2021-03-11 14:38:15,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.413265306122449) internal successors, (1338), 392 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1338 transitions. [2021-03-11 14:38:15,927 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1338 transitions. Word has length 22 [2021-03-11 14:38:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:15,927 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1338 transitions. [2021-03-11 14:38:15,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:15,928 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1338 transitions. [2021-03-11 14:38:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:15,928 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:15,928 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:15,928 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable838 [2021-03-11 14:38:15,928 INFO L428 AbstractCegarLoop]: === Iteration 840 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:15,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1733565969, now seen corresponding path program 834 times [2021-03-11 14:38:15,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:15,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758688047] [2021-03-11 14:38:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:15,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:15,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:15,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:15,941 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:15,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:15,957 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:15,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:15,980 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:15,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:16,005 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:16,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:16,032 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:16,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:16,065 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:16,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:16,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758688047] [2021-03-11 14:38:16,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:16,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:16,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410699297] [2021-03-11 14:38:16,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:16,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:16,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:16,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:16,100 INFO L87 Difference]: Start difference. First operand 393 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:16,203 INFO L93 Difference]: Finished difference Result 622 states and 1797 transitions. [2021-03-11 14:38:16,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:16,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:16,205 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:38:16,205 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:38:16,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 186.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:38:16,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 382. [2021-03-11 14:38:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:38:16,211 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:16,211 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:38:16,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:38:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:16,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:16,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:16,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable839 [2021-03-11 14:38:16,211 INFO L428 AbstractCegarLoop]: === Iteration 841 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:16,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -593354833, now seen corresponding path program 835 times [2021-03-11 14:38:16,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:16,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173027990] [2021-03-11 14:38:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:16,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:16,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:16,225 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:16,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:16,243 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:16,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:16,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:16,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:16,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:16,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:16,338 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:16,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:16,367 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:16,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:16,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:16,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173027990] [2021-03-11 14:38:16,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:16,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:16,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513753718] [2021-03-11 14:38:16,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:16,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:16,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:16,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:16,394 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:16,495 INFO L93 Difference]: Finished difference Result 608 states and 1778 transitions. [2021-03-11 14:38:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:16,497 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:38:16,497 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:38:16,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:38:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 388. [2021-03-11 14:38:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4392764857881137) internal successors, (1331), 387 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1331 transitions. [2021-03-11 14:38:16,504 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:16,504 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1331 transitions. [2021-03-11 14:38:16,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,504 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1331 transitions. [2021-03-11 14:38:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:16,504 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:16,504 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:16,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable840 [2021-03-11 14:38:16,504 INFO L428 AbstractCegarLoop]: === Iteration 842 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:16,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1017586125, now seen corresponding path program 836 times [2021-03-11 14:38:16,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:16,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488499632] [2021-03-11 14:38:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:16,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:16,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:16,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:16,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:16,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:16,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:16,567 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:16,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:16,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:16,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:16,655 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:16,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:16,691 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:16,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:16,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488499632] [2021-03-11 14:38:16,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:16,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:16,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588398902] [2021-03-11 14:38:16,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:16,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:16,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:16,723 INFO L87 Difference]: Start difference. First operand 388 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:16,826 INFO L93 Difference]: Finished difference Result 612 states and 1784 transitions. [2021-03-11 14:38:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:16,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:16,828 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:38:16,828 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:38:16,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:16,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:38:16,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 386. [2021-03-11 14:38:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.444155844155844) internal successors, (1326), 385 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1326 transitions. [2021-03-11 14:38:16,834 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:16,834 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1326 transitions. [2021-03-11 14:38:16,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:16,834 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1326 transitions. [2021-03-11 14:38:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:16,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:16,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:16,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable841 [2021-03-11 14:38:16,835 INFO L428 AbstractCegarLoop]: === Iteration 843 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1181100155, now seen corresponding path program 837 times [2021-03-11 14:38:16,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:16,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382802867] [2021-03-11 14:38:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:16,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:16,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:16,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:16,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:16,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:16,868 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:16,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:16,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:16,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:16,934 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:16,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:16,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:16,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:17,021 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:17,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:17,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382802867] [2021-03-11 14:38:17,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:17,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:17,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239050881] [2021-03-11 14:38:17,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:17,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:17,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:17,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:17,052 INFO L87 Difference]: Start difference. First operand 386 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:17,150 INFO L93 Difference]: Finished difference Result 611 states and 1781 transitions. [2021-03-11 14:38:17,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:17,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:17,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:17,152 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:38:17,152 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:38:17,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 247.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:17,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:38:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 389. [2021-03-11 14:38:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4304123711340204) internal successors, (1331), 388 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1331 transitions. [2021-03-11 14:38:17,158 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:17,159 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1331 transitions. [2021-03-11 14:38:17,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1331 transitions. [2021-03-11 14:38:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:17,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:17,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:17,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable842 [2021-03-11 14:38:17,159 INFO L428 AbstractCegarLoop]: === Iteration 844 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:17,159 INFO L82 PathProgramCache]: Analyzing trace with hash 965070605, now seen corresponding path program 838 times [2021-03-11 14:38:17,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:17,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064067017] [2021-03-11 14:38:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:17,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:17,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:17,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:17,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:17,205 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:17,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:17,230 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:17,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:17,263 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:17,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:17,306 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:17,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:17,339 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:17,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:17,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064067017] [2021-03-11 14:38:17,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:17,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:17,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248007413] [2021-03-11 14:38:17,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:17,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:17,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:17,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:17,373 INFO L87 Difference]: Start difference. First operand 389 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:17,464 INFO L93 Difference]: Finished difference Result 617 states and 1790 transitions. [2021-03-11 14:38:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:17,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:17,466 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:38:17,466 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:38:17,466 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 211.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:38:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 386. [2021-03-11 14:38:17,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4363636363636365) internal successors, (1323), 385 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1323 transitions. [2021-03-11 14:38:17,472 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:17,472 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1323 transitions. [2021-03-11 14:38:17,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1323 transitions. [2021-03-11 14:38:17,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:17,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:17,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:17,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable843 [2021-03-11 14:38:17,473 INFO L428 AbstractCegarLoop]: === Iteration 845 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:17,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1170597051, now seen corresponding path program 839 times [2021-03-11 14:38:17,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:17,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744851502] [2021-03-11 14:38:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:17,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:17,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:17,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:17,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:17,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:17,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:17,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:17,530 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:17,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:17,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:17,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:17,595 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:17,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:17,628 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:17,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:17,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:17,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744851502] [2021-03-11 14:38:17,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:17,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:17,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530555376] [2021-03-11 14:38:17,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:17,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:17,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:17,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:17,661 INFO L87 Difference]: Start difference. First operand 386 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:17,772 INFO L93 Difference]: Finished difference Result 624 states and 1807 transitions. [2021-03-11 14:38:17,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:17,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:17,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:17,774 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:38:17,774 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:38:17,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:17,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:38:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 394. [2021-03-11 14:38:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4020356234096694) internal successors, (1337), 393 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1337 transitions. [2021-03-11 14:38:17,780 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1337 transitions. Word has length 22 [2021-03-11 14:38:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:17,781 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1337 transitions. [2021-03-11 14:38:17,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1337 transitions. [2021-03-11 14:38:17,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:17,781 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:17,781 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:17,781 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable844 [2021-03-11 14:38:17,781 INFO L428 AbstractCegarLoop]: === Iteration 846 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:17,781 INFO L82 PathProgramCache]: Analyzing trace with hash -635367249, now seen corresponding path program 840 times [2021-03-11 14:38:17,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:17,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023117462] [2021-03-11 14:38:17,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:17,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:17,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:17,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:17,795 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:17,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:17,814 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:17,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:17,842 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:17,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:17,879 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:17,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:17,908 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:17,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:17,942 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:17,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:17,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:17,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023117462] [2021-03-11 14:38:17,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:17,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:17,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554938863] [2021-03-11 14:38:17,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:17,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:17,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:17,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:17,974 INFO L87 Difference]: Start difference. First operand 394 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:18,064 INFO L93 Difference]: Finished difference Result 626 states and 1804 transitions. [2021-03-11 14:38:18,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:18,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:18,066 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:38:18,066 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:38:18,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:38:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 376. [2021-03-11 14:38:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.474666666666667) internal successors, (1303), 375 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1303 transitions. [2021-03-11 14:38:18,072 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1303 transitions. Word has length 22 [2021-03-11 14:38:18,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:18,072 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1303 transitions. [2021-03-11 14:38:18,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1303 transitions. [2021-03-11 14:38:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:18,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:18,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:18,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable845 [2021-03-11 14:38:18,072 INFO L428 AbstractCegarLoop]: === Iteration 847 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:18,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1354378685, now seen corresponding path program 841 times [2021-03-11 14:38:18,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:18,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812582388] [2021-03-11 14:38:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:18,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:18,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:18,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:18,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:18,105 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:18,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:18,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:18,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:18,163 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:18,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:18,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:18,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:18,224 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:18,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:18,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812582388] [2021-03-11 14:38:18,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:18,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:18,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670123632] [2021-03-11 14:38:18,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:18,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:18,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:18,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:18,256 INFO L87 Difference]: Start difference. First operand 376 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:18,387 INFO L93 Difference]: Finished difference Result 568 states and 1690 transitions. [2021-03-11 14:38:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:18,389 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:38:18,389 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:38:18,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 218.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:18,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:38:18,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 383. [2021-03-11 14:38:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4764397905759163) internal successors, (1328), 382 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1328 transitions. [2021-03-11 14:38:18,395 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:18,395 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1328 transitions. [2021-03-11 14:38:18,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1328 transitions. [2021-03-11 14:38:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:18,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:18,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:18,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable846 [2021-03-11 14:38:18,396 INFO L428 AbstractCegarLoop]: === Iteration 848 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:18,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1199886543, now seen corresponding path program 842 times [2021-03-11 14:38:18,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:18,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591856652] [2021-03-11 14:38:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:18,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:18,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:18,410 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:18,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:18,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:18,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:18,449 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:18,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:18,482 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:18,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:18,507 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:18,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:18,539 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:18,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:18,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:18,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591856652] [2021-03-11 14:38:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:18,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:18,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061408006] [2021-03-11 14:38:18,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:18,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:18,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:18,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:18,574 INFO L87 Difference]: Start difference. First operand 383 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:18,663 INFO L93 Difference]: Finished difference Result 566 states and 1685 transitions. [2021-03-11 14:38:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:18,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:18,665 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:38:18,665 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:38:18,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:38:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 382. [2021-03-11 14:38:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4803149606299213) internal successors, (1326), 381 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1326 transitions. [2021-03-11 14:38:18,671 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:18,671 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1326 transitions. [2021-03-11 14:38:18,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1326 transitions. [2021-03-11 14:38:18,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:18,671 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:18,671 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:18,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable847 [2021-03-11 14:38:18,671 INFO L428 AbstractCegarLoop]: === Iteration 849 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:18,672 INFO L82 PathProgramCache]: Analyzing trace with hash -848032419, now seen corresponding path program 843 times [2021-03-11 14:38:18,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:18,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076090210] [2021-03-11 14:38:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:18,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:18,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:18,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:18,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:18,701 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:18,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:18,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:18,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:18,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:18,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:18,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:18,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:18,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:18,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:18,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076090210] [2021-03-11 14:38:18,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:18,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:18,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009462092] [2021-03-11 14:38:18,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:18,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:18,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:18,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:18,855 INFO L87 Difference]: Start difference. First operand 382 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:18,960 INFO L93 Difference]: Finished difference Result 578 states and 1710 transitions. [2021-03-11 14:38:18,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:18,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:18,961 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:38:18,961 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:18,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 215.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:18,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 386. [2021-03-11 14:38:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4623376623376623) internal successors, (1333), 385 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1333 transitions. [2021-03-11 14:38:18,967 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1333 transitions. Word has length 22 [2021-03-11 14:38:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:18,967 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1333 transitions. [2021-03-11 14:38:18,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1333 transitions. [2021-03-11 14:38:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:18,968 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:18,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:18,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable848 [2021-03-11 14:38:18,968 INFO L428 AbstractCegarLoop]: === Iteration 850 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:18,968 INFO L82 PathProgramCache]: Analyzing trace with hash -774725007, now seen corresponding path program 844 times [2021-03-11 14:38:18,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:18,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150906506] [2021-03-11 14:38:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:18,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:18,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:18,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:18,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:18,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:18,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:18,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:19,018 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:19,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:19,049 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:19,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:19,090 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:19,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:19,122 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:19,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:19,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150906506] [2021-03-11 14:38:19,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:19,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:19,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741510232] [2021-03-11 14:38:19,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:19,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:19,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:19,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:19,152 INFO L87 Difference]: Start difference. First operand 386 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:19,233 INFO L93 Difference]: Finished difference Result 583 states and 1716 transitions. [2021-03-11 14:38:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:19,234 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:38:19,234 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:19,234 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 382. [2021-03-11 14:38:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4750656167979) internal successors, (1324), 381 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1324 transitions. [2021-03-11 14:38:19,240 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:19,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:19,240 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1324 transitions. [2021-03-11 14:38:19,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1324 transitions. [2021-03-11 14:38:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:19,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:19,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:19,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable849 [2021-03-11 14:38:19,241 INFO L428 AbstractCegarLoop]: === Iteration 851 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:19,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2000989165, now seen corresponding path program 845 times [2021-03-11 14:38:19,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:19,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342984817] [2021-03-11 14:38:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:19,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:19,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:19,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:19,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:19,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:19,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:19,287 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:19,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:19,314 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:19,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:19,346 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:19,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:19,377 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:19,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:19,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342984817] [2021-03-11 14:38:19,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:19,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:19,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209033767] [2021-03-11 14:38:19,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:19,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:19,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:19,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:19,411 INFO L87 Difference]: Start difference. First operand 382 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:19,499 INFO L93 Difference]: Finished difference Result 572 states and 1694 transitions. [2021-03-11 14:38:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:19,500 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:38:19,500 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:19,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 182.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:19,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 384. [2021-03-11 14:38:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:38:19,506 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:19,506 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:38:19,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:38:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:19,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:19,507 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:19,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable850 [2021-03-11 14:38:19,507 INFO L428 AbstractCegarLoop]: === Iteration 852 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:19,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1463133587, now seen corresponding path program 846 times [2021-03-11 14:38:19,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:19,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030528252] [2021-03-11 14:38:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:19,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:19,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:19,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:19,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:19,538 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:19,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:19,561 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:19,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:19,590 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:19,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:19,627 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:19,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:19,661 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:19,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:19,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:19,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030528252] [2021-03-11 14:38:19,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:19,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:19,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619972897] [2021-03-11 14:38:19,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:19,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:19,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:19,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:19,694 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:19,787 INFO L93 Difference]: Finished difference Result 579 states and 1706 transitions. [2021-03-11 14:38:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:19,789 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:19,789 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:38:19,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:38:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 380. [2021-03-11 14:38:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.480211081794195) internal successors, (1319), 379 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1319 transitions. [2021-03-11 14:38:19,795 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:19,795 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1319 transitions. [2021-03-11 14:38:19,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1319 transitions. [2021-03-11 14:38:19,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:19,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:19,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:19,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable851 [2021-03-11 14:38:19,796 INFO L428 AbstractCegarLoop]: === Iteration 853 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:19,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1393380003, now seen corresponding path program 847 times [2021-03-11 14:38:19,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:19,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492273289] [2021-03-11 14:38:19,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:19,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:19,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:19,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:19,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:19,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:19,828 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:19,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:19,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:19,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:19,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:19,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:19,902 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:19,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:19,933 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:19,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:19,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492273289] [2021-03-11 14:38:19,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:19,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:19,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848354252] [2021-03-11 14:38:19,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:19,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:19,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:19,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:19,962 INFO L87 Difference]: Start difference. First operand 380 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:20,091 INFO L93 Difference]: Finished difference Result 558 states and 1667 transitions. [2021-03-11 14:38:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:20,093 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:38:20,093 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:38:20,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:38:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 382. [2021-03-11 14:38:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 381 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1323 transitions. [2021-03-11 14:38:20,099 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:20,099 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1323 transitions. [2021-03-11 14:38:20,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1323 transitions. [2021-03-11 14:38:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:20,100 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:20,100 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:20,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable852 [2021-03-11 14:38:20,100 INFO L428 AbstractCegarLoop]: === Iteration 854 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:20,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:20,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1238887861, now seen corresponding path program 848 times [2021-03-11 14:38:20,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:20,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254921430] [2021-03-11 14:38:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:20,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:20,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:20,113 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:20,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:20,130 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:20,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:20,152 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:20,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:20,174 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:20,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:20,199 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:20,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:20,234 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:20,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:20,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254921430] [2021-03-11 14:38:20,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:20,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:20,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17751483] [2021-03-11 14:38:20,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:20,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:20,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:20,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:20,263 INFO L87 Difference]: Start difference. First operand 382 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:20,337 INFO L93 Difference]: Finished difference Result 556 states and 1662 transitions. [2021-03-11 14:38:20,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:20,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:20,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:20,339 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:38:20,339 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:38:20,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:38:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 381. [2021-03-11 14:38:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4763157894736842) internal successors, (1321), 380 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1321 transitions. [2021-03-11 14:38:20,345 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:20,345 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1321 transitions. [2021-03-11 14:38:20,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1321 transitions. [2021-03-11 14:38:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:20,345 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:20,345 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:20,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable853 [2021-03-11 14:38:20,345 INFO L428 AbstractCegarLoop]: === Iteration 855 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:20,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1301149439, now seen corresponding path program 849 times [2021-03-11 14:38:20,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:20,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738373964] [2021-03-11 14:38:20,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:20,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:20,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:20,358 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:20,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:20,372 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:20,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:20,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:20,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:20,410 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:20,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:20,433 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:20,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:20,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:20,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:20,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738373964] [2021-03-11 14:38:20,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:20,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:20,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912767662] [2021-03-11 14:38:20,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:20,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:20,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:20,504 INFO L87 Difference]: Start difference. First operand 381 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:20,614 INFO L93 Difference]: Finished difference Result 560 states and 1671 transitions. [2021-03-11 14:38:20,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:20,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:20,616 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:38:20,616 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:38:20,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:38:20,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 383. [2021-03-11 14:38:20,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4659685863874348) internal successors, (1324), 382 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1324 transitions. [2021-03-11 14:38:20,622 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:20,622 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1324 transitions. [2021-03-11 14:38:20,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1324 transitions. [2021-03-11 14:38:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:20,622 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:20,623 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:20,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable854 [2021-03-11 14:38:20,623 INFO L428 AbstractCegarLoop]: === Iteration 856 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:20,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:20,623 INFO L82 PathProgramCache]: Analyzing trace with hash 798607887, now seen corresponding path program 850 times [2021-03-11 14:38:20,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:20,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781778333] [2021-03-11 14:38:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:20,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:20,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:20,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:20,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:20,652 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:20,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:20,674 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:20,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:20,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:20,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:20,720 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:20,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:20,751 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:20,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:20,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781778333] [2021-03-11 14:38:20,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:20,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:20,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401035260] [2021-03-11 14:38:20,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:20,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:20,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:20,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:20,781 INFO L87 Difference]: Start difference. First operand 383 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:20,897 INFO L93 Difference]: Finished difference Result 559 states and 1667 transitions. [2021-03-11 14:38:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:20,899 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:38:20,899 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:38:20,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:20,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:38:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 381. [2021-03-11 14:38:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.473684210526316) internal successors, (1320), 380 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1320 transitions. [2021-03-11 14:38:20,905 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:20,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:20,905 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1320 transitions. [2021-03-11 14:38:20,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1320 transitions. [2021-03-11 14:38:20,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:20,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:20,905 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:20,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable855 [2021-03-11 14:38:20,905 INFO L428 AbstractCegarLoop]: === Iteration 857 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:20,906 INFO L82 PathProgramCache]: Analyzing trace with hash -144796273, now seen corresponding path program 851 times [2021-03-11 14:38:20,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:20,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929879095] [2021-03-11 14:38:20,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:20,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:20,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:20,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:20,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:20,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:20,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:20,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:20,962 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:20,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:20,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:20,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:21,013 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:21,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:21,047 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:21,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:21,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929879095] [2021-03-11 14:38:21,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:21,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:21,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34843822] [2021-03-11 14:38:21,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:21,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:21,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:21,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:21,079 INFO L87 Difference]: Start difference. First operand 381 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:21,160 INFO L93 Difference]: Finished difference Result 555 states and 1659 transitions. [2021-03-11 14:38:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:21,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:21,162 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:38:21,162 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:38:21,162 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 183.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:38:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 382. [2021-03-11 14:38:21,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4671916010498687) internal successors, (1321), 381 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1321 transitions. [2021-03-11 14:38:21,168 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:21,168 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1321 transitions. [2021-03-11 14:38:21,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1321 transitions. [2021-03-11 14:38:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:21,168 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:21,168 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:21,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable856 [2021-03-11 14:38:21,168 INFO L428 AbstractCegarLoop]: === Iteration 858 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:21,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1466144685, now seen corresponding path program 852 times [2021-03-11 14:38:21,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:21,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569841992] [2021-03-11 14:38:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:21,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:21,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:21,182 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:21,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:21,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:21,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:21,220 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:21,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:21,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:21,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:21,271 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:21,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:21,302 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:21,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:21,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569841992] [2021-03-11 14:38:21,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:21,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:21,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740835547] [2021-03-11 14:38:21,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:21,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:21,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:21,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:21,332 INFO L87 Difference]: Start difference. First operand 382 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:21,437 INFO L93 Difference]: Finished difference Result 556 states and 1660 transitions. [2021-03-11 14:38:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:21,438 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:38:21,439 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:38:21,439 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:38:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 380. [2021-03-11 14:38:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4775725593667546) internal successors, (1318), 379 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1318 transitions. [2021-03-11 14:38:21,444 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:21,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:21,444 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1318 transitions. [2021-03-11 14:38:21,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,445 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1318 transitions. [2021-03-11 14:38:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:21,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:21,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:21,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable857 [2021-03-11 14:38:21,445 INFO L428 AbstractCegarLoop]: === Iteration 859 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:21,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:21,445 INFO L82 PathProgramCache]: Analyzing trace with hash -181985499, now seen corresponding path program 853 times [2021-03-11 14:38:21,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:21,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934442970] [2021-03-11 14:38:21,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:21,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:21,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:21,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:21,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:21,474 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:21,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:21,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:21,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:21,525 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:21,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:21,551 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:21,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:21,582 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:21,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:21,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934442970] [2021-03-11 14:38:21,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:21,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:21,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115019626] [2021-03-11 14:38:21,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:21,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:21,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:21,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:21,612 INFO L87 Difference]: Start difference. First operand 380 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:21,716 INFO L93 Difference]: Finished difference Result 574 states and 1704 transitions. [2021-03-11 14:38:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:21,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:21,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:21,718 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:38:21,718 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:21,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 385. [2021-03-11 14:38:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4661458333333335) internal successors, (1331), 384 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1331 transitions. [2021-03-11 14:38:21,724 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:21,724 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1331 transitions. [2021-03-11 14:38:21,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1331 transitions. [2021-03-11 14:38:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:21,724 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:21,724 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:21,724 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable858 [2021-03-11 14:38:21,724 INFO L428 AbstractCegarLoop]: === Iteration 860 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash -684527051, now seen corresponding path program 854 times [2021-03-11 14:38:21,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:21,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140389213] [2021-03-11 14:38:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:21,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:21,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:21,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:21,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:21,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:21,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:21,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:21,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:21,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:21,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:21,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:21,828 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:21,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:21,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:21,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:21,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140389213] [2021-03-11 14:38:21,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:21,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:21,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216805153] [2021-03-11 14:38:21,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:21,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:21,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:21,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:21,884 INFO L87 Difference]: Start difference. First operand 385 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:21,992 INFO L93 Difference]: Finished difference Result 573 states and 1700 transitions. [2021-03-11 14:38:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:21,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:21,994 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:38:21,994 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:21,994 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 383. [2021-03-11 14:38:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4712041884816753) internal successors, (1326), 382 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1326 transitions. [2021-03-11 14:38:22,001 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:22,001 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1326 transitions. [2021-03-11 14:38:22,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1326 transitions. [2021-03-11 14:38:22,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:22,001 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:22,001 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:22,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable859 [2021-03-11 14:38:22,001 INFO L428 AbstractCegarLoop]: === Iteration 861 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:22,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1924798621, now seen corresponding path program 855 times [2021-03-11 14:38:22,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:22,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94416865] [2021-03-11 14:38:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:22,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:22,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:22,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:22,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:22,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:22,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:22,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:22,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:22,090 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:22,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:22,131 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:22,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:22,162 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:22,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:22,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94416865] [2021-03-11 14:38:22,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:22,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:22,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975271425] [2021-03-11 14:38:22,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:22,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:22,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:22,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:22,192 INFO L87 Difference]: Start difference. First operand 383 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:22,293 INFO L93 Difference]: Finished difference Result 582 states and 1718 transitions. [2021-03-11 14:38:22,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:22,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:22,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:22,295 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:38:22,295 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:38:22,295 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 220.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:22,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:38:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 387. [2021-03-11 14:38:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4533678756476682) internal successors, (1333), 386 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1333 transitions. [2021-03-11 14:38:22,301 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1333 transitions. Word has length 22 [2021-03-11 14:38:22,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:22,301 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1333 transitions. [2021-03-11 14:38:22,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,301 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1333 transitions. [2021-03-11 14:38:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:22,302 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:22,302 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:22,302 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable860 [2021-03-11 14:38:22,302 INFO L428 AbstractCegarLoop]: === Iteration 862 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:22,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1998106033, now seen corresponding path program 856 times [2021-03-11 14:38:22,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:22,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204678577] [2021-03-11 14:38:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:22,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:22,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:22,317 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:22,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:22,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:22,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:22,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:22,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:22,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:22,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:22,430 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:22,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:22,464 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:22,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:22,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204678577] [2021-03-11 14:38:22,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:22,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:22,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21365226] [2021-03-11 14:38:22,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:22,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:22,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:22,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:22,495 INFO L87 Difference]: Start difference. First operand 387 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:22,580 INFO L93 Difference]: Finished difference Result 587 states and 1724 transitions. [2021-03-11 14:38:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:22,582 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:22,582 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:22,582 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 202.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:22,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 383. [2021-03-11 14:38:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4633507853403143) internal successors, (1323), 382 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1323 transitions. [2021-03-11 14:38:22,588 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:22,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:22,588 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1323 transitions. [2021-03-11 14:38:22,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1323 transitions. [2021-03-11 14:38:22,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:22,588 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:22,589 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:22,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable861 [2021-03-11 14:38:22,589 INFO L428 AbstractCegarLoop]: === Iteration 863 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:22,589 INFO L82 PathProgramCache]: Analyzing trace with hash 406510259, now seen corresponding path program 857 times [2021-03-11 14:38:22,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:22,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946665428] [2021-03-11 14:38:22,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:22,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:22,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:22,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:22,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:22,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:22,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:22,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:22,648 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:22,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:22,678 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:22,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:22,724 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:22,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:22,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:22,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:22,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946665428] [2021-03-11 14:38:22,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:22,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:22,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29953684] [2021-03-11 14:38:22,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:22,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:22,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:22,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:22,788 INFO L87 Difference]: Start difference. First operand 383 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:22,910 INFO L93 Difference]: Finished difference Result 579 states and 1708 transitions. [2021-03-11 14:38:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:22,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:22,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:22,912 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:22,912 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:38:22,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:38:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 386. [2021-03-11 14:38:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.449350649350649) internal successors, (1328), 385 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1328 transitions. [2021-03-11 14:38:22,918 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:22,918 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1328 transitions. [2021-03-11 14:38:22,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1328 transitions. [2021-03-11 14:38:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:22,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:22,918 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:22,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable862 [2021-03-11 14:38:22,918 INFO L428 AbstractCegarLoop]: === Iteration 864 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:22,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1722667563, now seen corresponding path program 858 times [2021-03-11 14:38:22,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:22,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042268621] [2021-03-11 14:38:22,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:22,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:22,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:22,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:22,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:22,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:22,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:22,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:22,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:22,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:23,000 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:23,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:23,044 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:23,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:23,077 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:23,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:23,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042268621] [2021-03-11 14:38:23,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:23,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:23,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631970187] [2021-03-11 14:38:23,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:23,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:23,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:23,109 INFO L87 Difference]: Start difference. First operand 386 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:23,192 INFO L93 Difference]: Finished difference Result 585 states and 1717 transitions. [2021-03-11 14:38:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:23,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:23,193 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:38:23,193 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:23,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 380. [2021-03-11 14:38:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4722955145118735) internal successors, (1316), 379 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1316 transitions. [2021-03-11 14:38:23,199 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:23,199 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1316 transitions. [2021-03-11 14:38:23,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1316 transitions. [2021-03-11 14:38:23,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:23,200 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:23,200 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:23,200 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable863 [2021-03-11 14:38:23,200 INFO L428 AbstractCegarLoop]: === Iteration 865 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:23,200 INFO L82 PathProgramCache]: Analyzing trace with hash 298102867, now seen corresponding path program 859 times [2021-03-11 14:38:23,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:23,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103784829] [2021-03-11 14:38:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:23,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:23,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:23,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:23,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:23,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:23,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:23,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:23,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:23,281 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:23,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:23,305 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:23,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:23,339 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:23,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103784829] [2021-03-11 14:38:23,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:23,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:23,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188684651] [2021-03-11 14:38:23,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:23,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:23,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:23,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:23,376 INFO L87 Difference]: Start difference. First operand 380 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:23,482 INFO L93 Difference]: Finished difference Result 563 states and 1674 transitions. [2021-03-11 14:38:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:23,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:23,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:23,484 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:38:23,484 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:38:23,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:23,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:38:23,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 383. [2021-03-11 14:38:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4633507853403143) internal successors, (1323), 382 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1323 transitions. [2021-03-11 14:38:23,490 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:23,490 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1323 transitions. [2021-03-11 14:38:23,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1323 transitions. [2021-03-11 14:38:23,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:23,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:23,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:23,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable864 [2021-03-11 14:38:23,491 INFO L428 AbstractCegarLoop]: === Iteration 866 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:23,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:23,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1909043825, now seen corresponding path program 860 times [2021-03-11 14:38:23,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:23,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448665745] [2021-03-11 14:38:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:23,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:23,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:23,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:23,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:23,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:23,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:23,545 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:23,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:23,581 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:23,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:23,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:23,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:23,638 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:23,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448665745] [2021-03-11 14:38:23,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:23,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:23,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301369353] [2021-03-11 14:38:23,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:23,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:23,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:23,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:23,669 INFO L87 Difference]: Start difference. First operand 383 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:23,772 INFO L93 Difference]: Finished difference Result 564 states and 1675 transitions. [2021-03-11 14:38:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:23,773 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:38:23,774 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:23,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 382. [2021-03-11 14:38:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4671916010498687) internal successors, (1321), 381 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1321 transitions. [2021-03-11 14:38:23,780 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:23,780 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1321 transitions. [2021-03-11 14:38:23,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1321 transitions. [2021-03-11 14:38:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:23,780 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:23,780 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:23,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable865 [2021-03-11 14:38:23,780 INFO L428 AbstractCegarLoop]: === Iteration 867 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1890080309, now seen corresponding path program 861 times [2021-03-11 14:38:23,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:23,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239491449] [2021-03-11 14:38:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:23,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:23,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:23,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:23,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:23,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:23,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:23,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:23,836 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:23,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:23,876 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:23,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:23,915 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:23,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:23,951 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:23,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:23,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239491449] [2021-03-11 14:38:23,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:23,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:23,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583475136] [2021-03-11 14:38:23,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:23,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:23,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:23,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:23,986 INFO L87 Difference]: Start difference. First operand 382 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:24,078 INFO L93 Difference]: Finished difference Result 570 states and 1686 transitions. [2021-03-11 14:38:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:24,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:24,080 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:38:24,080 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:24,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 216.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 384. [2021-03-11 14:38:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4569190600522193) internal successors, (1324), 383 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1324 transitions. [2021-03-11 14:38:24,089 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:24,089 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1324 transitions. [2021-03-11 14:38:24,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,089 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1324 transitions. [2021-03-11 14:38:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:24,090 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:24,090 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:24,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable866 [2021-03-11 14:38:24,090 INFO L428 AbstractCegarLoop]: === Iteration 868 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1867031409, now seen corresponding path program 862 times [2021-03-11 14:38:24,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:24,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940924191] [2021-03-11 14:38:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:24,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:24,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:24,104 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:24,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:24,123 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:24,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:24,149 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:24,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:24,189 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:24,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:24,226 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:24,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:24,258 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:24,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940924191] [2021-03-11 14:38:24,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:24,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:24,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391084159] [2021-03-11 14:38:24,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:24,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:24,288 INFO L87 Difference]: Start difference. First operand 384 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:24,377 INFO L93 Difference]: Finished difference Result 577 states and 1698 transitions. [2021-03-11 14:38:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:24,378 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:38:24,378 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:38:24,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:38:24,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 382. [2021-03-11 14:38:24,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:38:24,384 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:24,384 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:38:24,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:38:24,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:24,385 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:24,385 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:24,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable867 [2021-03-11 14:38:24,385 INFO L428 AbstractCegarLoop]: === Iteration 869 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:24,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1879577205, now seen corresponding path program 863 times [2021-03-11 14:38:24,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:24,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213601208] [2021-03-11 14:38:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:24,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:24,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:24,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:24,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:24,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:24,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:24,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:24,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:24,472 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:24,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:24,515 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:24,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:24,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:24,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:24,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213601208] [2021-03-11 14:38:24,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:24,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:24,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623042009] [2021-03-11 14:38:24,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:24,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:24,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:24,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:24,579 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:24,684 INFO L93 Difference]: Finished difference Result 573 states and 1691 transitions. [2021-03-11 14:38:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:24,686 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:38:24,686 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:24,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:24,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 385. [2021-03-11 14:38:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4479166666666665) internal successors, (1324), 384 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1324 transitions. [2021-03-11 14:38:24,692 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:24,692 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1324 transitions. [2021-03-11 14:38:24,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1324 transitions. [2021-03-11 14:38:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:24,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:24,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:24,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable868 [2021-03-11 14:38:24,692 INFO L428 AbstractCegarLoop]: === Iteration 870 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash 266593555, now seen corresponding path program 864 times [2021-03-11 14:38:24,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:24,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908899866] [2021-03-11 14:38:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:24,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:24,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:24,706 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:24,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:24,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:24,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:24,746 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:24,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:24,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:24,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:24,829 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:24,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:24,862 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:24,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:24,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908899866] [2021-03-11 14:38:24,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:24,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:24,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655773919] [2021-03-11 14:38:24,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:24,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:24,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:24,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:24,894 INFO L87 Difference]: Start difference. First operand 385 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:24,976 INFO L93 Difference]: Finished difference Result 579 states and 1700 transitions. [2021-03-11 14:38:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:24,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:24,978 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:24,978 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:38:24,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 208.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:24,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:38:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 378. [2021-03-11 14:38:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.477453580901857) internal successors, (1311), 377 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1311 transitions. [2021-03-11 14:38:24,984 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1311 transitions. Word has length 22 [2021-03-11 14:38:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:24,984 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1311 transitions. [2021-03-11 14:38:24,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:24,984 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1311 transitions. [2021-03-11 14:38:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:24,984 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:24,984 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:24,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable869 [2021-03-11 14:38:24,984 INFO L428 AbstractCegarLoop]: === Iteration 871 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:24,985 INFO L82 PathProgramCache]: Analyzing trace with hash -81444977, now seen corresponding path program 865 times [2021-03-11 14:38:24,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:24,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500320412] [2021-03-11 14:38:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:24,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:24,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:24,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:24,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:24,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:25,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:25,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:25,033 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:25,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:25,061 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:25,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:25,084 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:25,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:25,113 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:25,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:25,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500320412] [2021-03-11 14:38:25,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:25,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:25,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261136242] [2021-03-11 14:38:25,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:25,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:25,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:25,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:25,147 INFO L87 Difference]: Start difference. First operand 378 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:25,283 INFO L93 Difference]: Finished difference Result 572 states and 1699 transitions. [2021-03-11 14:38:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:25,284 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:25,284 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:38:25,285 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:25,285 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 383. [2021-03-11 14:38:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4712041884816753) internal successors, (1326), 382 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1326 transitions. [2021-03-11 14:38:25,291 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:25,291 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1326 transitions. [2021-03-11 14:38:25,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1326 transitions. [2021-03-11 14:38:25,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:25,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:25,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:25,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable870 [2021-03-11 14:38:25,291 INFO L428 AbstractCegarLoop]: === Iteration 872 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 73047165, now seen corresponding path program 866 times [2021-03-11 14:38:25,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:25,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843914114] [2021-03-11 14:38:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:25,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:25,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:25,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:25,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:25,323 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:25,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:25,350 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:25,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:25,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:25,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:25,412 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:25,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:25,448 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:25,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:25,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843914114] [2021-03-11 14:38:25,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:25,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:25,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839311139] [2021-03-11 14:38:25,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:25,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:25,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:25,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:25,482 INFO L87 Difference]: Start difference. First operand 383 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:25,582 INFO L93 Difference]: Finished difference Result 570 states and 1694 transitions. [2021-03-11 14:38:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:25,584 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:38:25,584 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:38:25,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:38:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 382. [2021-03-11 14:38:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4750656167979) internal successors, (1324), 381 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1324 transitions. [2021-03-11 14:38:25,590 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:25,590 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1324 transitions. [2021-03-11 14:38:25,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1324 transitions. [2021-03-11 14:38:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:25,591 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:25,591 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:25,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable871 [2021-03-11 14:38:25,591 INFO L428 AbstractCegarLoop]: === Iteration 873 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash 424901289, now seen corresponding path program 867 times [2021-03-11 14:38:25,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:25,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259528234] [2021-03-11 14:38:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:25,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:25,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:25,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:25,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:25,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:25,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:25,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:25,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:25,683 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:25,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:25,728 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:25,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:25,763 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:25,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:25,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259528234] [2021-03-11 14:38:25,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:25,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:25,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388571139] [2021-03-11 14:38:25,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:25,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:25,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:25,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:25,797 INFO L87 Difference]: Start difference. First operand 382 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:25,903 INFO L93 Difference]: Finished difference Result 582 states and 1719 transitions. [2021-03-11 14:38:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:25,904 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:38:25,904 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:38:25,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:38:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 386. [2021-03-11 14:38:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4571428571428573) internal successors, (1331), 385 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1331 transitions. [2021-03-11 14:38:25,910 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:25,910 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1331 transitions. [2021-03-11 14:38:25,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1331 transitions. [2021-03-11 14:38:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:25,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:25,911 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:25,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable872 [2021-03-11 14:38:25,911 INFO L428 AbstractCegarLoop]: === Iteration 874 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash 498208701, now seen corresponding path program 868 times [2021-03-11 14:38:25,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:25,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023031171] [2021-03-11 14:38:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:25,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:25,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:25,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:25,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:25,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:25,942 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:25,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:25,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:25,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:25,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:25,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:26,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:26,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:26,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:26,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:26,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023031171] [2021-03-11 14:38:26,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:26,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:26,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450924979] [2021-03-11 14:38:26,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:26,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:26,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:26,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:26,105 INFO L87 Difference]: Start difference. First operand 386 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:26,196 INFO L93 Difference]: Finished difference Result 587 states and 1725 transitions. [2021-03-11 14:38:26,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:26,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:26,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:26,198 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:26,198 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:26,198 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:26,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 382. [2021-03-11 14:38:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4698162729658795) internal successors, (1322), 381 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1322 transitions. [2021-03-11 14:38:26,204 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1322 transitions. Word has length 22 [2021-03-11 14:38:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:26,204 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1322 transitions. [2021-03-11 14:38:26,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1322 transitions. [2021-03-11 14:38:26,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:26,205 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:26,205 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:26,205 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable873 [2021-03-11 14:38:26,205 INFO L428 AbstractCegarLoop]: === Iteration 875 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:26,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1021044423, now seen corresponding path program 869 times [2021-03-11 14:38:26,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:26,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139423562] [2021-03-11 14:38:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:26,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:26,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:26,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:26,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:26,235 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:26,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:26,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:26,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:26,290 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:26,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:26,326 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:26,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:26,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:26,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:26,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139423562] [2021-03-11 14:38:26,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:26,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:26,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242617734] [2021-03-11 14:38:26,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:26,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:26,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:26,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:26,391 INFO L87 Difference]: Start difference. First operand 382 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:26,465 INFO L93 Difference]: Finished difference Result 576 states and 1703 transitions. [2021-03-11 14:38:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:26,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:26,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:26,467 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:38:26,467 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:26,467 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 384. [2021-03-11 14:38:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4595300261096606) internal successors, (1325), 383 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1325 transitions. [2021-03-11 14:38:26,472 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1325 transitions. Word has length 22 [2021-03-11 14:38:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:26,473 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1325 transitions. [2021-03-11 14:38:26,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1325 transitions. [2021-03-11 14:38:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:26,473 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:26,473 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:26,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable874 [2021-03-11 14:38:26,473 INFO L428 AbstractCegarLoop]: === Iteration 876 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:26,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:26,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1558900001, now seen corresponding path program 870 times [2021-03-11 14:38:26,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:26,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018120192] [2021-03-11 14:38:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:26,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:26,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:26,486 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:26,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:26,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:26,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:26,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:26,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:26,549 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:26,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:26,581 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:26,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:26,616 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:26,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:26,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018120192] [2021-03-11 14:38:26,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:26,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:26,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331679756] [2021-03-11 14:38:26,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:26,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:26,652 INFO L87 Difference]: Start difference. First operand 384 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:26,742 INFO L93 Difference]: Finished difference Result 583 states and 1715 transitions. [2021-03-11 14:38:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:26,744 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:38:26,744 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:26,744 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:26,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 380. [2021-03-11 14:38:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.474934036939314) internal successors, (1317), 379 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1317 transitions. [2021-03-11 14:38:26,750 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:26,750 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1317 transitions. [2021-03-11 14:38:26,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1317 transitions. [2021-03-11 14:38:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:26,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:26,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:26,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable875 [2021-03-11 14:38:26,751 INFO L428 AbstractCegarLoop]: === Iteration 877 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:26,751 INFO L82 PathProgramCache]: Analyzing trace with hash -551801815, now seen corresponding path program 871 times [2021-03-11 14:38:26,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:26,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590347445] [2021-03-11 14:38:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:26,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:26,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:26,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:26,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:26,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:26,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:26,804 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:26,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:26,824 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:26,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:26,850 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:26,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:26,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:26,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:26,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590347445] [2021-03-11 14:38:26,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:26,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:26,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026449011] [2021-03-11 14:38:26,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:26,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:26,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:26,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:26,912 INFO L87 Difference]: Start difference. First operand 380 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:27,056 INFO L93 Difference]: Finished difference Result 564 states and 1681 transitions. [2021-03-11 14:38:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:27,058 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:38:27,058 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:27,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:27,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 382. [2021-03-11 14:38:27,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4671916010498687) internal successors, (1321), 381 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1321 transitions. [2021-03-11 14:38:27,064 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:27,064 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1321 transitions. [2021-03-11 14:38:27,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1321 transitions. [2021-03-11 14:38:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:27,064 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:27,064 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:27,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable876 [2021-03-11 14:38:27,064 INFO L428 AbstractCegarLoop]: === Iteration 878 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:27,064 INFO L82 PathProgramCache]: Analyzing trace with hash -397309673, now seen corresponding path program 872 times [2021-03-11 14:38:27,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:27,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153423173] [2021-03-11 14:38:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:27,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:27,078 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:27,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:27,094 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:27,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:27,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:27,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:27,138 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:27,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:27,166 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:27,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:27,201 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:27,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:27,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153423173] [2021-03-11 14:38:27,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:27,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:27,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146110173] [2021-03-11 14:38:27,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:27,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:27,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:27,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:27,233 INFO L87 Difference]: Start difference. First operand 382 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:27,330 INFO L93 Difference]: Finished difference Result 562 states and 1676 transitions. [2021-03-11 14:38:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:27,332 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:38:27,332 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:38:27,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 181.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:38:27,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 381. [2021-03-11 14:38:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.471052631578947) internal successors, (1319), 380 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1319 transitions. [2021-03-11 14:38:27,338 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:27,338 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1319 transitions. [2021-03-11 14:38:27,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,338 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1319 transitions. [2021-03-11 14:38:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:27,338 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:27,338 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:27,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable877 [2021-03-11 14:38:27,339 INFO L428 AbstractCegarLoop]: === Iteration 879 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:27,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:27,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1139547137, now seen corresponding path program 873 times [2021-03-11 14:38:27,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:27,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739999245] [2021-03-11 14:38:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:27,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:27,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:27,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:27,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:27,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:27,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:27,394 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:27,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:27,415 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:27,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:27,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:27,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:27,474 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:27,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:27,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739999245] [2021-03-11 14:38:27,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:27,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:27,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225786154] [2021-03-11 14:38:27,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:27,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:27,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:27,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:27,508 INFO L87 Difference]: Start difference. First operand 381 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:27,642 INFO L93 Difference]: Finished difference Result 566 states and 1687 transitions. [2021-03-11 14:38:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:27,643 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:27,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:27,644 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:38:27,644 INFO L226 Difference]: Without dead ends: 555 [2021-03-11 14:38:27,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:27,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-11 14:38:27,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 384. [2021-03-11 14:38:27,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4569190600522193) internal successors, (1324), 383 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1324 transitions. [2021-03-11 14:38:27,650 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:27,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:27,650 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1324 transitions. [2021-03-11 14:38:27,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,650 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1324 transitions. [2021-03-11 14:38:27,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:27,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:27,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:27,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable878 [2021-03-11 14:38:27,650 INFO L428 AbstractCegarLoop]: === Iteration 880 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1101794647, now seen corresponding path program 874 times [2021-03-11 14:38:27,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:27,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351998782] [2021-03-11 14:38:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:27,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:27,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:27,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:27,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:27,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:27,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:27,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:27,726 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:27,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:27,751 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:27,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:27,783 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:27,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:27,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:27,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351998782] [2021-03-11 14:38:27,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:27,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:27,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246155895] [2021-03-11 14:38:27,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:27,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:27,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:27,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:27,815 INFO L87 Difference]: Start difference. First operand 384 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:27,934 INFO L93 Difference]: Finished difference Result 558 states and 1678 transitions. [2021-03-11 14:38:27,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:27,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:27,936 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:38:27,936 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:38:27,936 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:38:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 381. [2021-03-11 14:38:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.468421052631579) internal successors, (1318), 380 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1318 transitions. [2021-03-11 14:38:27,942 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:27,942 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1318 transitions. [2021-03-11 14:38:27,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1318 transitions. [2021-03-11 14:38:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:27,942 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:27,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:27,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable879 [2021-03-11 14:38:27,942 INFO L428 AbstractCegarLoop]: === Iteration 881 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:27,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1709474447, now seen corresponding path program 875 times [2021-03-11 14:38:27,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:27,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962963180] [2021-03-11 14:38:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:27,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:27,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:27,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:27,956 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:27,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:27,972 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:27,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:27,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:27,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:28,019 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:28,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:28,064 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:28,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:28,097 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:28,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:28,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962963180] [2021-03-11 14:38:28,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:28,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:28,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118329945] [2021-03-11 14:38:28,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:28,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:28,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:28,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:28,128 INFO L87 Difference]: Start difference. First operand 381 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:28,221 INFO L93 Difference]: Finished difference Result 562 states and 1676 transitions. [2021-03-11 14:38:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:28,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:28,222 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:38:28,222 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:28,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 193.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 382. [2021-03-11 14:38:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:38:28,228 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:28,228 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:38:28,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:38:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:28,228 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:28,228 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:28,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable880 [2021-03-11 14:38:28,229 INFO L428 AbstractCegarLoop]: === Iteration 882 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:28,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:28,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2050263047, now seen corresponding path program 876 times [2021-03-11 14:38:28,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:28,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958855349] [2021-03-11 14:38:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:28,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:28,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:28,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:28,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:28,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:28,277 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:28,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:28,295 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:28,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:28,334 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:28,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:28,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:28,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:28,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958855349] [2021-03-11 14:38:28,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:28,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:28,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197778378] [2021-03-11 14:38:28,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:28,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:28,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:28,393 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:28,557 INFO L93 Difference]: Finished difference Result 556 states and 1673 transitions. [2021-03-11 14:38:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:28,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:28,559 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:38:28,559 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:38:28,559 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 206.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:38:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 380. [2021-03-11 14:38:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4722955145118735) internal successors, (1316), 379 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1316 transitions. [2021-03-11 14:38:28,565 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:28,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:28,565 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1316 transitions. [2021-03-11 14:38:28,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1316 transitions. [2021-03-11 14:38:28,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:28,566 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:28,566 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:28,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable881 [2021-03-11 14:38:28,566 INFO L428 AbstractCegarLoop]: === Iteration 883 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:28,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1672285221, now seen corresponding path program 877 times [2021-03-11 14:38:28,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:28,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045946149] [2021-03-11 14:38:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:28,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:28,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:28,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:28,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:28,601 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:28,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:28,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:28,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:28,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:28,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:28,701 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:28,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:28,738 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:28,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:28,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045946149] [2021-03-11 14:38:28,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:28,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:28,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567567703] [2021-03-11 14:38:28,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:28,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:28,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:28,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:28,773 INFO L87 Difference]: Start difference. First operand 380 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:28,906 INFO L93 Difference]: Finished difference Result 587 states and 1737 transitions. [2021-03-11 14:38:28,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:28,907 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:28,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:28,908 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:28,908 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:38:28,908 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 238.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:28,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:38:28,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 387. [2021-03-11 14:38:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4585492227979273) internal successors, (1335), 386 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1335 transitions. [2021-03-11 14:38:28,914 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1335 transitions. Word has length 22 [2021-03-11 14:38:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:28,914 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1335 transitions. [2021-03-11 14:38:28,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1335 transitions. [2021-03-11 14:38:28,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:28,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:28,914 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:28,914 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable882 [2021-03-11 14:38:28,915 INFO L428 AbstractCegarLoop]: === Iteration 884 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:28,915 INFO L82 PathProgramCache]: Analyzing trace with hash -381340291, now seen corresponding path program 878 times [2021-03-11 14:38:28,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:28,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513682256] [2021-03-11 14:38:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:28,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:28,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:28,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:28,932 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:28,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:28,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:28,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:28,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:28,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:29,010 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:29,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:29,036 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:29,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:29,071 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:29,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:29,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513682256] [2021-03-11 14:38:29,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:29,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:29,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449695377] [2021-03-11 14:38:29,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:29,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:29,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:29,103 INFO L87 Difference]: Start difference. First operand 387 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:29,223 INFO L93 Difference]: Finished difference Result 588 states and 1736 transitions. [2021-03-11 14:38:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:29,224 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:29,225 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:38:29,225 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:38:29,225 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:38:29,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 384. [2021-03-11 14:38:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:38:29,231 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:29,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:29,231 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:38:29,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:38:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:29,231 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:29,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:29,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable883 [2021-03-11 14:38:29,231 INFO L428 AbstractCegarLoop]: === Iteration 885 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:29,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:29,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1528590487, now seen corresponding path program 879 times [2021-03-11 14:38:29,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:29,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045267672] [2021-03-11 14:38:29,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:29,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:29,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:29,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:29,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:29,267 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:29,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:29,297 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:29,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:29,337 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:29,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:29,385 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:29,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:29,424 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:29,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:29,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:29,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045267672] [2021-03-11 14:38:29,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:29,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:29,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515652658] [2021-03-11 14:38:29,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:29,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:29,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:29,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:29,462 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:29,617 INFO L93 Difference]: Finished difference Result 588 states and 1733 transitions. [2021-03-11 14:38:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:29,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:29,619 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:38:29,619 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:38:29,619 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:29,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:38:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 388. [2021-03-11 14:38:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.44702842377261) internal successors, (1334), 387 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1334 transitions. [2021-03-11 14:38:29,625 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1334 transitions. Word has length 22 [2021-03-11 14:38:29,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:29,625 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1334 transitions. [2021-03-11 14:38:29,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,625 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1334 transitions. [2021-03-11 14:38:29,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:29,626 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:29,626 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:29,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable884 [2021-03-11 14:38:29,626 INFO L428 AbstractCegarLoop]: === Iteration 886 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:29,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1455283075, now seen corresponding path program 880 times [2021-03-11 14:38:29,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:29,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853843230] [2021-03-11 14:38:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:29,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:29,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:29,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:29,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:29,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:29,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:29,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:29,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:29,718 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:29,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:29,760 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:29,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:29,794 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:29,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:29,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853843230] [2021-03-11 14:38:29,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:29,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:29,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111701609] [2021-03-11 14:38:29,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:29,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:29,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:29,830 INFO L87 Difference]: Start difference. First operand 388 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:29,957 INFO L93 Difference]: Finished difference Result 593 states and 1739 transitions. [2021-03-11 14:38:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:29,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:29,959 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:38:29,959 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:38:29,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:29,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:38:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 384. [2021-03-11 14:38:29,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.454308093994778) internal successors, (1323), 383 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1323 transitions. [2021-03-11 14:38:29,965 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:29,965 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1323 transitions. [2021-03-11 14:38:29,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1323 transitions. [2021-03-11 14:38:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:29,965 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:29,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:29,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable885 [2021-03-11 14:38:29,966 INFO L428 AbstractCegarLoop]: === Iteration 887 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:29,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1891189481, now seen corresponding path program 881 times [2021-03-11 14:38:29,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:29,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556680594] [2021-03-11 14:38:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:29,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:29,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:29,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:29,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:29,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:29,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:29,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:30,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:30,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:30,060 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:30,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:30,104 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:30,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:30,137 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:30,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:30,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556680594] [2021-03-11 14:38:30,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:30,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:30,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255663423] [2021-03-11 14:38:30,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:30,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:30,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:30,169 INFO L87 Difference]: Start difference. First operand 384 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:30,287 INFO L93 Difference]: Finished difference Result 591 states and 1736 transitions. [2021-03-11 14:38:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:30,289 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:38:30,289 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:38:30,289 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 238.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:38:30,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 389. [2021-03-11 14:38:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4329896907216493) internal successors, (1332), 388 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1332 transitions. [2021-03-11 14:38:30,295 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1332 transitions. Word has length 22 [2021-03-11 14:38:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:30,295 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1332 transitions. [2021-03-11 14:38:30,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,295 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1332 transitions. [2021-03-11 14:38:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:30,296 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:30,296 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:30,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable886 [2021-03-11 14:38:30,296 INFO L428 AbstractCegarLoop]: === Iteration 888 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -693164507, now seen corresponding path program 882 times [2021-03-11 14:38:30,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:30,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772687537] [2021-03-11 14:38:30,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:30,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:30,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:30,310 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:30,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:30,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:30,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:30,352 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:30,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:30,386 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:30,434 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:30,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:30,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:30,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772687537] [2021-03-11 14:38:30,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:30,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:30,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739294781] [2021-03-11 14:38:30,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:30,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:30,501 INFO L87 Difference]: Start difference. First operand 389 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:30,626 INFO L93 Difference]: Finished difference Result 587 states and 1725 transitions. [2021-03-11 14:38:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:30,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:30,628 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:30,628 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:38:30,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 216.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:38:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 380. [2021-03-11 14:38:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.467018469656992) internal successors, (1314), 379 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1314 transitions. [2021-03-11 14:38:30,633 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:30,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:30,634 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1314 transitions. [2021-03-11 14:38:30,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1314 transitions. [2021-03-11 14:38:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:30,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:30,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:30,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable887 [2021-03-11 14:38:30,634 INFO L428 AbstractCegarLoop]: === Iteration 889 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:30,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:30,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2142593709, now seen corresponding path program 883 times [2021-03-11 14:38:30,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:30,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958260069] [2021-03-11 14:38:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:30,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:30,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:30,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:30,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:30,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:30,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:30,692 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:30,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:30,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:30,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:30,777 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:30,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:30,812 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:30,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:30,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958260069] [2021-03-11 14:38:30,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:30,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:30,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032805968] [2021-03-11 14:38:30,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:30,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:30,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:30,844 INFO L87 Difference]: Start difference. First operand 380 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:30,953 INFO L93 Difference]: Finished difference Result 573 states and 1697 transitions. [2021-03-11 14:38:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:30,955 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:38:30,955 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:38:30,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:38:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 383. [2021-03-11 14:38:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4581151832460733) internal successors, (1321), 382 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1321 transitions. [2021-03-11 14:38:30,961 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:30,961 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1321 transitions. [2021-03-11 14:38:30,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1321 transitions. [2021-03-11 14:38:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:30,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:30,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:30,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable888 [2021-03-11 14:38:30,962 INFO L428 AbstractCegarLoop]: === Iteration 890 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:30,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1607363907, now seen corresponding path program 884 times [2021-03-11 14:38:30,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:30,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655486081] [2021-03-11 14:38:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:30,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:30,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:30,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:30,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:30,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:30,993 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:30,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:31,019 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:31,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:31,055 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:31,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:31,103 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:31,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:31,138 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:31,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:31,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655486081] [2021-03-11 14:38:31,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:31,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:31,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782843681] [2021-03-11 14:38:31,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:31,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:31,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:31,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:31,168 INFO L87 Difference]: Start difference. First operand 383 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:31,271 INFO L93 Difference]: Finished difference Result 576 states and 1702 transitions. [2021-03-11 14:38:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:31,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:31,272 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:38:31,272 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:31,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:31,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 382. [2021-03-11 14:38:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:38:31,278 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:31,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:31,278 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:38:31,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,278 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:38:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:31,279 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:31,279 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:31,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable889 [2021-03-11 14:38:31,279 INFO L428 AbstractCegarLoop]: === Iteration 891 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:31,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:31,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1048502121, now seen corresponding path program 885 times [2021-03-11 14:38:31,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:31,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125125060] [2021-03-11 14:38:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:31,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:31,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:31,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:31,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:31,308 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:31,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:31,330 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:31,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:31,369 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:31,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:31,412 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:31,450 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:31,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:31,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125125060] [2021-03-11 14:38:31,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:31,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:31,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803201119] [2021-03-11 14:38:31,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:31,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:31,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:31,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:31,485 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:31,582 INFO L93 Difference]: Finished difference Result 576 states and 1701 transitions. [2021-03-11 14:38:31,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:31,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:31,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:31,584 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:38:31,584 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:31,584 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 384. [2021-03-11 14:38:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:38:31,590 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:38:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:31,590 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:38:31,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:38:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:31,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:31,590 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:31,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable890 [2021-03-11 14:38:31,590 INFO L428 AbstractCegarLoop]: === Iteration 892 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:31,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:31,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1586357699, now seen corresponding path program 886 times [2021-03-11 14:38:31,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:31,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146284834] [2021-03-11 14:38:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:31,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:31,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:31,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:31,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:31,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:31,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:31,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:31,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:31,692 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:31,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:31,733 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:31,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:31,768 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:31,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:31,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146284834] [2021-03-11 14:38:31,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:31,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:31,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059911310] [2021-03-11 14:38:31,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:31,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:31,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:31,800 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:31,903 INFO L93 Difference]: Finished difference Result 583 states and 1713 transitions. [2021-03-11 14:38:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:31,905 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:38:31,905 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:38:31,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 220.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:31,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:38:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 382. [2021-03-11 14:38:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.456692913385827) internal successors, (1317), 381 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1317 transitions. [2021-03-11 14:38:31,910 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:31,911 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1317 transitions. [2021-03-11 14:38:31,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1317 transitions. [2021-03-11 14:38:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:31,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:31,911 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:31,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable891 [2021-03-11 14:38:31,911 INFO L428 AbstractCegarLoop]: === Iteration 893 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:31,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1101017641, now seen corresponding path program 887 times [2021-03-11 14:38:31,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:31,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968372393] [2021-03-11 14:38:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:31,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:31,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:31,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:31,925 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:31,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:31,942 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:31,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:31,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:31,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:32,004 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:32,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:32,047 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:32,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:32,082 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:32,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:32,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968372393] [2021-03-11 14:38:32,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:32,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:32,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964028138] [2021-03-11 14:38:32,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:32,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:32,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:32,114 INFO L87 Difference]: Start difference. First operand 382 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:32,229 INFO L93 Difference]: Finished difference Result 585 states and 1720 transitions. [2021-03-11 14:38:32,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:32,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:32,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:32,231 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:38:32,231 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:38:32,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:38:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 387. [2021-03-11 14:38:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.435233160621762) internal successors, (1326), 386 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1326 transitions. [2021-03-11 14:38:32,237 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:32,237 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1326 transitions. [2021-03-11 14:38:32,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1326 transitions. [2021-03-11 14:38:32,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:32,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:32,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:32,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable892 [2021-03-11 14:38:32,238 INFO L428 AbstractCegarLoop]: === Iteration 894 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:32,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2120864275, now seen corresponding path program 888 times [2021-03-11 14:38:32,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:32,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045308127] [2021-03-11 14:38:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:32,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:32,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:32,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:32,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:32,268 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:32,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:32,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:32,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:32,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:32,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:32,373 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:32,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:32,407 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:32,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:32,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045308127] [2021-03-11 14:38:32,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:32,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:32,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992838701] [2021-03-11 14:38:32,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:32,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:32,439 INFO L87 Difference]: Start difference. First operand 387 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:32,553 INFO L93 Difference]: Finished difference Result 581 states and 1709 transitions. [2021-03-11 14:38:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:32,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:32,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:32,555 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:38:32,555 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:38:32,555 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 212.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:32,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:38:32,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 378. [2021-03-11 14:38:32,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4721485411140582) internal successors, (1309), 377 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1309 transitions. [2021-03-11 14:38:32,561 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1309 transitions. Word has length 22 [2021-03-11 14:38:32,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:32,561 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1309 transitions. [2021-03-11 14:38:32,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,561 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1309 transitions. [2021-03-11 14:38:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:32,562 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:32,562 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:32,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable893 [2021-03-11 14:38:32,562 INFO L428 AbstractCegarLoop]: === Iteration 895 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1205427203, now seen corresponding path program 889 times [2021-03-11 14:38:32,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:32,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407472233] [2021-03-11 14:38:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:32,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:32,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:32,576 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:32,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:32,593 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:32,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:32,609 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:32,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:32,630 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:32,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:32,657 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:32,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:32,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:32,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:32,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407472233] [2021-03-11 14:38:32,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:32,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:32,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501183126] [2021-03-11 14:38:32,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:32,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:32,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:32,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:32,723 INFO L87 Difference]: Start difference. First operand 378 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:32,837 INFO L93 Difference]: Finished difference Result 546 states and 1636 transitions. [2021-03-11 14:38:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:32,839 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:38:32,839 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:38:32,839 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 189.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:38:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 381. [2021-03-11 14:38:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4657894736842105) internal successors, (1317), 380 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1317 transitions. [2021-03-11 14:38:32,844 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:32,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:32,844 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1317 transitions. [2021-03-11 14:38:32,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1317 transitions. [2021-03-11 14:38:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:32,845 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:32,845 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:32,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable894 [2021-03-11 14:38:32,845 INFO L428 AbstractCegarLoop]: === Iteration 896 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1359919345, now seen corresponding path program 890 times [2021-03-11 14:38:32,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:32,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577108820] [2021-03-11 14:38:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:32,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:32,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:32,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:32,868 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:32,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:32,883 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:32,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:32,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:32,916 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:32,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:32,944 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:32,983 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:32,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:33,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577108820] [2021-03-11 14:38:33,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:33,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:33,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585350291] [2021-03-11 14:38:33,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:33,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:33,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:33,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:33,018 INFO L87 Difference]: Start difference. First operand 381 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:33,128 INFO L93 Difference]: Finished difference Result 544 states and 1631 transitions. [2021-03-11 14:38:33,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:33,130 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:38:33,130 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:38:33,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 175.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:33,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:38:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 380. [2021-03-11 14:38:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.469656992084433) internal successors, (1315), 379 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1315 transitions. [2021-03-11 14:38:33,136 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1315 transitions. Word has length 22 [2021-03-11 14:38:33,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:33,136 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1315 transitions. [2021-03-11 14:38:33,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1315 transitions. [2021-03-11 14:38:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:33,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:33,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:33,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable895 [2021-03-11 14:38:33,137 INFO L428 AbstractCegarLoop]: === Iteration 897 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:33,137 INFO L82 PathProgramCache]: Analyzing trace with hash -395010651, now seen corresponding path program 891 times [2021-03-11 14:38:33,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:33,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531385749] [2021-03-11 14:38:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:33,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:33,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:33,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:33,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:33,168 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:33,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:33,183 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:33,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:33,205 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:33,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:33,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:33,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:33,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:33,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:33,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531385749] [2021-03-11 14:38:33,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:33,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:33,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499566019] [2021-03-11 14:38:33,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:33,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:33,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:33,297 INFO L87 Difference]: Start difference. First operand 380 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:33,414 INFO L93 Difference]: Finished difference Result 548 states and 1640 transitions. [2021-03-11 14:38:33,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:33,416 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:38:33,416 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:38:33,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:38:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 382. [2021-03-11 14:38:33,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.459317585301837) internal successors, (1318), 381 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1318 transitions. [2021-03-11 14:38:33,422 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:33,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:33,422 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1318 transitions. [2021-03-11 14:38:33,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,422 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1318 transitions. [2021-03-11 14:38:33,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:33,423 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:33,423 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:33,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable896 [2021-03-11 14:38:33,423 INFO L428 AbstractCegarLoop]: === Iteration 898 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:33,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:33,423 INFO L82 PathProgramCache]: Analyzing trace with hash -897552203, now seen corresponding path program 892 times [2021-03-11 14:38:33,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:33,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553342704] [2021-03-11 14:38:33,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:33,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:33,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:33,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:33,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:33,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:33,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:33,481 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:33,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:33,502 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:33,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:33,529 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:33,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:33,563 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:33,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:33,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:33,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553342704] [2021-03-11 14:38:33,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:33,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:33,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900311972] [2021-03-11 14:38:33,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:33,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:33,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:33,597 INFO L87 Difference]: Start difference. First operand 382 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:33,727 INFO L93 Difference]: Finished difference Result 547 states and 1636 transitions. [2021-03-11 14:38:33,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:33,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:33,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:33,729 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:38:33,729 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:38:33,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 212.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:38:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 380. [2021-03-11 14:38:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.467018469656992) internal successors, (1314), 379 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1314 transitions. [2021-03-11 14:38:33,735 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:33,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:33,735 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1314 transitions. [2021-03-11 14:38:33,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1314 transitions. [2021-03-11 14:38:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:33,736 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:33,736 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:33,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable897 [2021-03-11 14:38:33,736 INFO L428 AbstractCegarLoop]: === Iteration 899 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1840956363, now seen corresponding path program 893 times [2021-03-11 14:38:33,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:33,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332238183] [2021-03-11 14:38:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:33,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:33,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:33,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:33,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:33,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:33,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:33,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:33,789 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:33,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:33,814 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:33,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:33,845 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:33,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:33,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:33,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:33,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332238183] [2021-03-11 14:38:33,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:33,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:33,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090889050] [2021-03-11 14:38:33,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:33,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:33,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:33,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:33,917 INFO L87 Difference]: Start difference. First operand 380 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:34,016 INFO L93 Difference]: Finished difference Result 543 states and 1628 transitions. [2021-03-11 14:38:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:34,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:34,018 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:38:34,018 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:38:34,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 190.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:38:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 381. [2021-03-11 14:38:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.460526315789474) internal successors, (1315), 380 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1315 transitions. [2021-03-11 14:38:34,024 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1315 transitions. Word has length 22 [2021-03-11 14:38:34,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:34,024 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1315 transitions. [2021-03-11 14:38:34,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,024 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1315 transitions. [2021-03-11 14:38:34,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:34,025 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:34,025 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:34,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable898 [2021-03-11 14:38:34,025 INFO L428 AbstractCegarLoop]: === Iteration 900 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:34,025 INFO L82 PathProgramCache]: Analyzing trace with hash -230015405, now seen corresponding path program 894 times [2021-03-11 14:38:34,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:34,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56096499] [2021-03-11 14:38:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:34,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:34,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:34,039 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:34,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:34,057 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:34,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:34,072 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:38:34,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:38:34,094 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:34,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:34,121 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:34,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:34,154 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:34,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:34,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56096499] [2021-03-11 14:38:34,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:34,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:34,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780599224] [2021-03-11 14:38:34,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:34,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:34,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:34,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:34,186 INFO L87 Difference]: Start difference. First operand 381 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:34,332 INFO L93 Difference]: Finished difference Result 544 states and 1629 transitions. [2021-03-11 14:38:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:34,333 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:34,334 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:38:34,334 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:38:34,334 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:38:34,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 379. [2021-03-11 14:38:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4708994708994707) internal successors, (1312), 378 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1312 transitions. [2021-03-11 14:38:34,340 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1312 transitions. Word has length 22 [2021-03-11 14:38:34,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:34,340 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1312 transitions. [2021-03-11 14:38:34,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1312 transitions. [2021-03-11 14:38:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:34,340 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:34,340 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:34,340 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable899 [2021-03-11 14:38:34,340 INFO L428 AbstractCegarLoop]: === Iteration 901 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:34,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1760842673, now seen corresponding path program 895 times [2021-03-11 14:38:34,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:34,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275899669] [2021-03-11 14:38:34,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:34,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:34,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:34,354 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:34,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:34,372 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:34,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:34,388 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:34,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:34,409 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:34,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:34,436 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:34,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:34,469 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:34,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:34,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275899669] [2021-03-11 14:38:34,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:34,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:34,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627965746] [2021-03-11 14:38:34,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:34,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:34,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:34,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:34,501 INFO L87 Difference]: Start difference. First operand 379 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:34,634 INFO L93 Difference]: Finished difference Result 548 states and 1640 transitions. [2021-03-11 14:38:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:34,636 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:38:34,636 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:38:34,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:34,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:38:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 381. [2021-03-11 14:38:34,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.463157894736842) internal successors, (1316), 380 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1316 transitions. [2021-03-11 14:38:34,642 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:34,642 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1316 transitions. [2021-03-11 14:38:34,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1316 transitions. [2021-03-11 14:38:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:34,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:34,643 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:34,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable900 [2021-03-11 14:38:34,643 INFO L428 AbstractCegarLoop]: === Iteration 902 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:34,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:34,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1606350531, now seen corresponding path program 896 times [2021-03-11 14:38:34,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:34,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729547552] [2021-03-11 14:38:34,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:34,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:34,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:34,657 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:34,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:34,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:34,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:34,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:34,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:34,711 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:34,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:34,738 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:34,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:34,773 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:34,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:34,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729547552] [2021-03-11 14:38:34,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:34,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:34,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098769053] [2021-03-11 14:38:34,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:34,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:34,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:34,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:34,805 INFO L87 Difference]: Start difference. First operand 381 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:34,899 INFO L93 Difference]: Finished difference Result 546 states and 1635 transitions. [2021-03-11 14:38:34,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:34,901 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:38:34,901 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:38:34,901 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:38:34,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 380. [2021-03-11 14:38:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.467018469656992) internal successors, (1314), 379 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1314 transitions. [2021-03-11 14:38:34,907 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:34,907 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1314 transitions. [2021-03-11 14:38:34,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:34,907 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1314 transitions. [2021-03-11 14:38:34,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:34,908 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:34,908 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:34,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable901 [2021-03-11 14:38:34,908 INFO L428 AbstractCegarLoop]: === Iteration 903 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:34,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1946379301, now seen corresponding path program 897 times [2021-03-11 14:38:34,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:34,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529905051] [2021-03-11 14:38:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:34,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:34,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:34,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:34,922 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:34,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:34,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:34,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:34,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:34,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:34,975 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:34,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:35,002 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:35,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:35,035 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:35,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:35,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529905051] [2021-03-11 14:38:35,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:35,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:35,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649755544] [2021-03-11 14:38:35,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:35,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:35,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:35,068 INFO L87 Difference]: Start difference. First operand 380 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:35,211 INFO L93 Difference]: Finished difference Result 550 states and 1646 transitions. [2021-03-11 14:38:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:35,212 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:35,213 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:38:35,213 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:38:35,213 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:38:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 383. [2021-03-11 14:38:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4528795811518322) internal successors, (1319), 382 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1319 transitions. [2021-03-11 14:38:35,219 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:35,219 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1319 transitions. [2021-03-11 14:38:35,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1319 transitions. [2021-03-11 14:38:35,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:35,219 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:35,219 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:35,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable902 [2021-03-11 14:38:35,219 INFO L428 AbstractCegarLoop]: === Iteration 904 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:35,220 INFO L82 PathProgramCache]: Analyzing trace with hash -107246211, now seen corresponding path program 898 times [2021-03-11 14:38:35,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:35,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556989025] [2021-03-11 14:38:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:35,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:35,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:35,233 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:35,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:35,250 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:35,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:35,266 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:35,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:35,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:35,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:35,312 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:35,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:35,345 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:35,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:35,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556989025] [2021-03-11 14:38:35,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:35,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:35,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861095060] [2021-03-11 14:38:35,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:35,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:35,378 INFO L87 Difference]: Start difference. First operand 383 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:35,506 INFO L93 Difference]: Finished difference Result 542 states and 1637 transitions. [2021-03-11 14:38:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:35,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:35,507 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:38:35,507 INFO L226 Difference]: Without dead ends: 527 [2021-03-11 14:38:35,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 188.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:35,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-03-11 14:38:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 380. [2021-03-11 14:38:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4643799472295513) internal successors, (1313), 379 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1313 transitions. [2021-03-11 14:38:35,513 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1313 transitions. Word has length 22 [2021-03-11 14:38:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:35,513 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1313 transitions. [2021-03-11 14:38:35,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1313 transitions. [2021-03-11 14:38:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:35,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:35,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:35,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable903 [2021-03-11 14:38:35,514 INFO L428 AbstractCegarLoop]: === Iteration 905 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash 500433589, now seen corresponding path program 899 times [2021-03-11 14:38:35,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:35,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851726459] [2021-03-11 14:38:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:35,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:35,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:35,527 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:35,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:35,542 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:35,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:35,556 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:35,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:35,579 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:35,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:35,629 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:35,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:35,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:35,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:35,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851726459] [2021-03-11 14:38:35,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:35,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:35,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716637929] [2021-03-11 14:38:35,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:35,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:35,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:35,700 INFO L87 Difference]: Start difference. First operand 380 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:35,820 INFO L93 Difference]: Finished difference Result 546 states and 1635 transitions. [2021-03-11 14:38:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:35,822 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:38:35,822 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:38:35,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:38:35,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 381. [2021-03-11 14:38:35,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:38:35,828 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:35,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:35,828 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:38:35,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:35,828 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:38:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:35,829 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:35,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:35,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable904 [2021-03-11 14:38:35,829 INFO L428 AbstractCegarLoop]: === Iteration 906 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:35,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1035663391, now seen corresponding path program 900 times [2021-03-11 14:38:35,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:35,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350056665] [2021-03-11 14:38:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:35,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:35,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:35,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:35,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:35,860 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:35,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:35,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:35,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:35,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:35,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:35,944 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:35,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:35,981 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:35,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:36,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:36,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350056665] [2021-03-11 14:38:36,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:36,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:36,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447046304] [2021-03-11 14:38:36,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:36,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:36,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:36,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:36,014 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:36,138 INFO L93 Difference]: Finished difference Result 540 states and 1632 transitions. [2021-03-11 14:38:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:36,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:36,140 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:38:36,140 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:38:36,140 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 224.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:36,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:38:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 379. [2021-03-11 14:38:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4682539682539684) internal successors, (1311), 378 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1311 transitions. [2021-03-11 14:38:36,146 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1311 transitions. Word has length 22 [2021-03-11 14:38:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:36,146 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1311 transitions. [2021-03-11 14:38:36,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1311 transitions. [2021-03-11 14:38:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:36,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:36,147 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:36,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable905 [2021-03-11 14:38:36,147 INFO L428 AbstractCegarLoop]: === Iteration 907 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:36,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:36,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1435246449, now seen corresponding path program 901 times [2021-03-11 14:38:36,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:36,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673233086] [2021-03-11 14:38:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:36,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:36,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:36,161 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:36,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:36,178 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:36,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:36,194 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:36,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:36,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:36,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:36,242 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:36,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:36,278 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:36,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:36,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673233086] [2021-03-11 14:38:36,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:36,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:36,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417362430] [2021-03-11 14:38:36,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:36,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:36,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:36,311 INFO L87 Difference]: Start difference. First operand 379 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:36,425 INFO L93 Difference]: Finished difference Result 553 states and 1653 transitions. [2021-03-11 14:38:36,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:36,427 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:38:36,427 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:38:36,427 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 199.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:38:36,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 383. [2021-03-11 14:38:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4581151832460733) internal successors, (1321), 382 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1321 transitions. [2021-03-11 14:38:36,433 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:36,433 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1321 transitions. [2021-03-11 14:38:36,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1321 transitions. [2021-03-11 14:38:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:36,433 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:36,433 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:36,434 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable906 [2021-03-11 14:38:36,434 INFO L428 AbstractCegarLoop]: === Iteration 908 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1937788001, now seen corresponding path program 902 times [2021-03-11 14:38:36,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:36,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180969035] [2021-03-11 14:38:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:36,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:36,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:36,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:36,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:36,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:36,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:36,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:36,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:36,501 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:36,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:36,528 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:36,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:36,562 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:36,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:36,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:36,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180969035] [2021-03-11 14:38:36,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:36,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:36,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352976284] [2021-03-11 14:38:36,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:36,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:36,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:36,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:36,595 INFO L87 Difference]: Start difference. First operand 383 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:36,717 INFO L93 Difference]: Finished difference Result 552 states and 1649 transitions. [2021-03-11 14:38:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:36,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:36,718 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:38:36,718 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:38:36,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:38:36,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 381. [2021-03-11 14:38:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.463157894736842) internal successors, (1316), 380 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1316 transitions. [2021-03-11 14:38:36,724 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:36,724 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1316 transitions. [2021-03-11 14:38:36,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1316 transitions. [2021-03-11 14:38:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:36,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:36,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:36,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable907 [2021-03-11 14:38:36,725 INFO L428 AbstractCegarLoop]: === Iteration 909 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:36,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:36,725 INFO L82 PathProgramCache]: Analyzing trace with hash -422553917, now seen corresponding path program 903 times [2021-03-11 14:38:36,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:36,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449288161] [2021-03-11 14:38:36,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:36,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:36,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:36,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:36,739 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:36,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:36,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:36,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:36,772 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:36,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:36,793 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:36,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:36,820 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:36,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:36,854 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:36,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:36,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:36,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449288161] [2021-03-11 14:38:36,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:36,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:36,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670059451] [2021-03-11 14:38:36,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:36,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:36,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:36,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:36,887 INFO L87 Difference]: Start difference. First operand 381 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:36,996 INFO L93 Difference]: Finished difference Result 553 states and 1653 transitions. [2021-03-11 14:38:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:36,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:36,998 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:38:36,998 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:38:36,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:38:37,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 384. [2021-03-11 14:38:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:38:37,004 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:37,004 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:38:37,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:38:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:37,004 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:37,004 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:37,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable908 [2021-03-11 14:38:37,004 INFO L428 AbstractCegarLoop]: === Iteration 910 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:37,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1818787867, now seen corresponding path program 904 times [2021-03-11 14:38:37,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:37,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996510030] [2021-03-11 14:38:37,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:37,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:37,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:37,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:37,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:37,033 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:37,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:37,047 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:37,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:37,065 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:37,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:37,094 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:37,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:37,130 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:37,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:37,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996510030] [2021-03-11 14:38:37,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:37,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:37,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597020310] [2021-03-11 14:38:37,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:37,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:37,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:37,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:37,167 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:37,302 INFO L93 Difference]: Finished difference Result 545 states and 1644 transitions. [2021-03-11 14:38:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:37,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:37,304 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:38:37,304 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:38:37,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 203.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:38:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 381. [2021-03-11 14:38:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:38:37,311 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:37,311 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:38:37,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:38:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:37,311 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:37,311 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:37,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable909 [2021-03-11 14:38:37,311 INFO L428 AbstractCegarLoop]: === Iteration 911 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:37,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash -867756899, now seen corresponding path program 905 times [2021-03-11 14:38:37,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:37,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742382544] [2021-03-11 14:38:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:37,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:37,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:37,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:37,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:37,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:37,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:37,363 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:37,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:37,387 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:37,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:37,417 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:37,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:37,457 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:37,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:37,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742382544] [2021-03-11 14:38:37,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:37,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:37,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097299417] [2021-03-11 14:38:37,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:37,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:37,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:37,493 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:37,627 INFO L93 Difference]: Finished difference Result 551 states and 1646 transitions. [2021-03-11 14:38:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:37,629 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:38:37,629 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:38:37,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 222.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:38:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 383. [2021-03-11 14:38:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4476439790575917) internal successors, (1317), 382 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1317 transitions. [2021-03-11 14:38:37,635 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:37,635 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1317 transitions. [2021-03-11 14:38:37,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1317 transitions. [2021-03-11 14:38:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:37,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:37,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:37,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable910 [2021-03-11 14:38:37,636 INFO L428 AbstractCegarLoop]: === Iteration 912 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1041004591, now seen corresponding path program 906 times [2021-03-11 14:38:37,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:37,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484911540] [2021-03-11 14:38:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:37,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:37,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:37,650 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:37,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:37,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:37,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:37,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:37,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:37,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:37,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:37,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:37,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:37,766 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:37,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:37,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484911540] [2021-03-11 14:38:37,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:37,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495626012] [2021-03-11 14:38:37,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:37,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:37,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:37,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:37,799 INFO L87 Difference]: Start difference. First operand 383 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:37,930 INFO L93 Difference]: Finished difference Result 544 states and 1640 transitions. [2021-03-11 14:38:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:37,931 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:37,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:37,931 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:38:37,932 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:38:37,932 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 198.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:38:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 379. [2021-03-11 14:38:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4656084656084656) internal successors, (1310), 378 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1310 transitions. [2021-03-11 14:38:37,937 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1310 transitions. Word has length 22 [2021-03-11 14:38:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:37,937 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1310 transitions. [2021-03-11 14:38:37,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1310 transitions. [2021-03-11 14:38:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:37,938 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:37,938 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:37,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable911 [2021-03-11 14:38:37,938 INFO L428 AbstractCegarLoop]: === Iteration 913 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -955158083, now seen corresponding path program 907 times [2021-03-11 14:38:37,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:37,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616011149] [2021-03-11 14:38:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:37,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:37,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:37,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:37,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:37,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:37,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:37,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:37,986 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:37,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:38,007 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:38,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:38,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:38,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:38,073 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:38,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:38,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616011149] [2021-03-11 14:38:38,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:38,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:38,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411154703] [2021-03-11 14:38:38,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:38,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:38,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:38,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:38,109 INFO L87 Difference]: Start difference. First operand 379 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:38,215 INFO L93 Difference]: Finished difference Result 543 states and 1627 transitions. [2021-03-11 14:38:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:38,216 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:38:38,216 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:38:38,216 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 179.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:38:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 381. [2021-03-11 14:38:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:38:38,222 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:38,222 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:38:38,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:38:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:38,223 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:38,223 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:38,223 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable912 [2021-03-11 14:38:38,223 INFO L428 AbstractCegarLoop]: === Iteration 914 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash 655782875, now seen corresponding path program 908 times [2021-03-11 14:38:38,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:38,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905963380] [2021-03-11 14:38:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:38,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:38,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:38,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:38,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:38,251 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:38,266 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:38,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:38,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:38,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:38,310 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:38,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:38,340 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:38,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:38,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905963380] [2021-03-11 14:38:38,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:38,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:38,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427322357] [2021-03-11 14:38:38,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:38,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:38,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:38,377 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:38,514 INFO L93 Difference]: Finished difference Result 544 states and 1628 transitions. [2021-03-11 14:38:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:38,515 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:38:38,516 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:38:38,516 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 195.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:38:38,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 380. [2021-03-11 14:38:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.461741424802111) internal successors, (1312), 379 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1312 transitions. [2021-03-11 14:38:38,521 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1312 transitions. Word has length 22 [2021-03-11 14:38:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:38,522 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1312 transitions. [2021-03-11 14:38:38,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1312 transitions. [2021-03-11 14:38:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:38,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:38,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:38,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable913 [2021-03-11 14:38:38,522 INFO L428 AbstractCegarLoop]: === Iteration 915 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 57534449, now seen corresponding path program 909 times [2021-03-11 14:38:38,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:38,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367260351] [2021-03-11 14:38:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:38,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:38,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:38,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:38,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:38,558 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:38,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:38,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:38,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:38,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:38,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:38,650 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:38,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:38,687 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:38,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:38,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367260351] [2021-03-11 14:38:38,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:38,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:38,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640520804] [2021-03-11 14:38:38,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:38,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:38,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:38,723 INFO L87 Difference]: Start difference. First operand 380 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:38,824 INFO L93 Difference]: Finished difference Result 544 states and 1629 transitions. [2021-03-11 14:38:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:38,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:38,826 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:38:38,826 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:38:38,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 211.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:38:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 381. [2021-03-11 14:38:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.455263157894737) internal successors, (1313), 380 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1313 transitions. [2021-03-11 14:38:38,832 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1313 transitions. Word has length 22 [2021-03-11 14:38:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:38,832 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1313 transitions. [2021-03-11 14:38:38,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1313 transitions. [2021-03-11 14:38:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:38,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:38,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:38,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable914 [2021-03-11 14:38:38,833 INFO L428 AbstractCegarLoop]: === Iteration 916 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:38,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:38,833 INFO L82 PathProgramCache]: Analyzing trace with hash 592764251, now seen corresponding path program 910 times [2021-03-11 14:38:38,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:38,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697369018] [2021-03-11 14:38:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:38,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:38,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:38,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:38,848 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:38,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:38,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:38,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:38,886 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:38,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:38,908 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:38,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:38,954 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:38,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:38,990 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:38,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:39,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697369018] [2021-03-11 14:38:39,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:39,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:39,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563785304] [2021-03-11 14:38:39,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:39,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:39,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:39,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:39,022 INFO L87 Difference]: Start difference. First operand 381 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:39,148 INFO L93 Difference]: Finished difference Result 538 states and 1626 transitions. [2021-03-11 14:38:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:39,149 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:38:39,149 INFO L226 Difference]: Without dead ends: 525 [2021-03-11 14:38:39,149 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:39,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-03-11 14:38:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 380. [2021-03-11 14:38:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:38:39,158 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:38:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:39,158 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:38:39,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:38:39,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:39,158 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:39,158 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:39,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable915 [2021-03-11 14:38:39,158 INFO L428 AbstractCegarLoop]: === Iteration 917 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:39,159 INFO L82 PathProgramCache]: Analyzing trace with hash 68037553, now seen corresponding path program 911 times [2021-03-11 14:38:39,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:39,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55813462] [2021-03-11 14:38:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:39,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:39,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:39,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:39,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:39,195 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:39,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:39,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:39,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:39,238 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:39,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:39,262 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:39,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:39,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:39,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:39,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55813462] [2021-03-11 14:38:39,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:39,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:39,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049218170] [2021-03-11 14:38:39,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:39,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:39,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:39,323 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:39,449 INFO L93 Difference]: Finished difference Result 546 states and 1633 transitions. [2021-03-11 14:38:39,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:39,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:39,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:39,451 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:38:39,451 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:38:39,451 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:38:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 382. [2021-03-11 14:38:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:38:39,457 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:39,457 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:38:39,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:38:39,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:39,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:39,457 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:39,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable916 [2021-03-11 14:38:39,457 INFO L428 AbstractCegarLoop]: === Iteration 918 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:39,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1007673603, now seen corresponding path program 912 times [2021-03-11 14:38:39,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:39,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093589261] [2021-03-11 14:38:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:39,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:39,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:39,472 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:39,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:39,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:38:39,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:38:39,506 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:39,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:39,527 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:39,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:39,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:39,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:39,587 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:39,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:39,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093589261] [2021-03-11 14:38:39,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:39,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:39,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504656193] [2021-03-11 14:38:39,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:39,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:39,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:39,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:39,621 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:39,774 INFO L93 Difference]: Finished difference Result 539 states and 1627 transitions. [2021-03-11 14:38:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:39,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:39,776 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:38:39,776 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:38:39,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:38:39,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 378. [2021-03-11 14:38:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4694960212201593) internal successors, (1308), 377 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1308 transitions. [2021-03-11 14:38:39,781 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1308 transitions. Word has length 22 [2021-03-11 14:38:39,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:39,781 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1308 transitions. [2021-03-11 14:38:39,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:39,782 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1308 transitions. [2021-03-11 14:38:39,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:39,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:39,782 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:39,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable917 [2021-03-11 14:38:39,782 INFO L428 AbstractCegarLoop]: === Iteration 919 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash -167789271, now seen corresponding path program 913 times [2021-03-11 14:38:39,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:39,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554054848] [2021-03-11 14:38:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:39,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:39,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:39,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:39,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:39,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:39,814 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:39,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:39,841 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:39,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:39,865 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:39,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:39,894 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:39,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:39,928 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:39,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:39,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554054848] [2021-03-11 14:38:39,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:39,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:39,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710379993] [2021-03-11 14:38:39,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:39,961 INFO L87 Difference]: Start difference. First operand 378 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:40,082 INFO L93 Difference]: Finished difference Result 581 states and 1733 transitions. [2021-03-11 14:38:40,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:40,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:40,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:40,084 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:38:40,084 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:38:40,084 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:40,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:38:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 385. [2021-03-11 14:38:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4661458333333335) internal successors, (1331), 384 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1331 transitions. [2021-03-11 14:38:40,090 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:40,090 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1331 transitions. [2021-03-11 14:38:40,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1331 transitions. [2021-03-11 14:38:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:40,091 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:40,091 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:40,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable918 [2021-03-11 14:38:40,091 INFO L428 AbstractCegarLoop]: === Iteration 920 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:40,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:40,091 INFO L82 PathProgramCache]: Analyzing trace with hash -670330823, now seen corresponding path program 914 times [2021-03-11 14:38:40,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:40,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410442647] [2021-03-11 14:38:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:40,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:40,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:40,105 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:40,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:40,122 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:40,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:40,148 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:40,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:40,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:40,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:40,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:40,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:40,233 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:40,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:40,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410442647] [2021-03-11 14:38:40,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:40,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:40,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626167932] [2021-03-11 14:38:40,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:40,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:40,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:40,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:40,267 INFO L87 Difference]: Start difference. First operand 385 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:40,384 INFO L93 Difference]: Finished difference Result 580 states and 1729 transitions. [2021-03-11 14:38:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:40,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:40,386 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:38:40,386 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:38:40,386 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 212.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:38:40,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 383. [2021-03-11 14:38:40,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4712041884816753) internal successors, (1326), 382 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1326 transitions. [2021-03-11 14:38:40,392 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:40,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:40,392 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1326 transitions. [2021-03-11 14:38:40,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,392 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1326 transitions. [2021-03-11 14:38:40,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:40,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:40,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:40,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable919 [2021-03-11 14:38:40,393 INFO L428 AbstractCegarLoop]: === Iteration 921 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash 844903261, now seen corresponding path program 915 times [2021-03-11 14:38:40,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:40,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935674305] [2021-03-11 14:38:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:40,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:40,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:40,407 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:40,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:40,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:40,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:40,451 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:40,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:40,472 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:40,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:40,500 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:40,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:40,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:40,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:40,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935674305] [2021-03-11 14:38:40,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:40,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:40,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215796066] [2021-03-11 14:38:40,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:40,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:40,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:40,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:40,565 INFO L87 Difference]: Start difference. First operand 383 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:40,669 INFO L93 Difference]: Finished difference Result 584 states and 1738 transitions. [2021-03-11 14:38:40,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:40,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:40,670 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:38:40,670 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:38:40,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 202.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:38:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 386. [2021-03-11 14:38:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4571428571428573) internal successors, (1331), 385 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1331 transitions. [2021-03-11 14:38:40,679 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:40,679 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1331 transitions. [2021-03-11 14:38:40,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1331 transitions. [2021-03-11 14:38:40,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:40,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:40,680 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:40,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable920 [2021-03-11 14:38:40,680 INFO L428 AbstractCegarLoop]: === Iteration 922 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:40,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1208722251, now seen corresponding path program 916 times [2021-03-11 14:38:40,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:40,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975929342] [2021-03-11 14:38:40,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:40,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:40,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:40,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:40,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:40,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:40,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:40,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:40,737 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:40,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:40,761 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:40,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:40,792 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:40,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:40,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:40,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:40,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:40,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975929342] [2021-03-11 14:38:40,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:40,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:40,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742461175] [2021-03-11 14:38:40,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:40,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:40,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:40,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:40,867 INFO L87 Difference]: Start difference. First operand 386 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:41,031 INFO L93 Difference]: Finished difference Result 585 states and 1737 transitions. [2021-03-11 14:38:41,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:41,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:41,033 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:38:41,033 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:38:41,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 229.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:41,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:38:41,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 383. [2021-03-11 14:38:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4659685863874348) internal successors, (1324), 382 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1324 transitions. [2021-03-11 14:38:41,039 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:41,039 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1324 transitions. [2021-03-11 14:38:41,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1324 transitions. [2021-03-11 14:38:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:41,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:41,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:41,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable921 [2021-03-11 14:38:41,040 INFO L428 AbstractCegarLoop]: === Iteration 923 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:41,040 INFO L82 PathProgramCache]: Analyzing trace with hash 399700279, now seen corresponding path program 917 times [2021-03-11 14:38:41,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:41,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669151318] [2021-03-11 14:38:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:41,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:41,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:41,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:41,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:41,075 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:41,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:41,104 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:41,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:41,126 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:41,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:41,155 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:41,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:41,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:41,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:41,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669151318] [2021-03-11 14:38:41,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:41,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:41,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676386358] [2021-03-11 14:38:41,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:41,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:41,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:41,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:41,224 INFO L87 Difference]: Start difference. First operand 383 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:41,352 INFO L93 Difference]: Finished difference Result 581 states and 1729 transitions. [2021-03-11 14:38:41,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:41,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:41,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:41,354 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:38:41,354 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:38:41,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:38:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 385. [2021-03-11 14:38:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:38:41,360 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:41,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:41,360 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:38:41,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:38:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:41,360 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:41,360 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:41,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable922 [2021-03-11 14:38:41,360 INFO L428 AbstractCegarLoop]: === Iteration 924 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash 226452587, now seen corresponding path program 918 times [2021-03-11 14:38:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:41,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970972133] [2021-03-11 14:38:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:41,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:41,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:41,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:41,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:41,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:41,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:41,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:41,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:41,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:41,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:41,474 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:41,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:41,509 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:41,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:41,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970972133] [2021-03-11 14:38:41,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:41,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:41,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497666714] [2021-03-11 14:38:41,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:41,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:41,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:41,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:41,542 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:41,664 INFO L93 Difference]: Finished difference Result 583 states and 1731 transitions. [2021-03-11 14:38:41,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:41,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:41,666 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:38:41,666 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:38:41,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 210.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:38:41,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 381. [2021-03-11 14:38:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.471052631578947) internal successors, (1319), 380 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1319 transitions. [2021-03-11 14:38:41,672 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:41,672 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1319 transitions. [2021-03-11 14:38:41,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1319 transitions. [2021-03-11 14:38:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:41,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:41,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:41,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable923 [2021-03-11 14:38:41,672 INFO L428 AbstractCegarLoop]: === Iteration 925 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:41,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash -610688411, now seen corresponding path program 919 times [2021-03-11 14:38:41,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:41,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145996730] [2021-03-11 14:38:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:41,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:41,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:41,687 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:41,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:41,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:41,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:41,730 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:41,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:41,764 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:41,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:41,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:41,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:41,827 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:41,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:41,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145996730] [2021-03-11 14:38:41,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:41,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:41,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350829449] [2021-03-11 14:38:41,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:41,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:41,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:41,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:41,856 INFO L87 Difference]: Start difference. First operand 381 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:41,983 INFO L93 Difference]: Finished difference Result 585 states and 1735 transitions. [2021-03-11 14:38:41,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:41,985 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:38:41,985 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:38:41,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:41,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:38:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 386. [2021-03-11 14:38:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4597402597402596) internal successors, (1332), 385 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1332 transitions. [2021-03-11 14:38:41,991 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1332 transitions. Word has length 22 [2021-03-11 14:38:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:41,991 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1332 transitions. [2021-03-11 14:38:41,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:41,991 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1332 transitions. [2021-03-11 14:38:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:41,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:41,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:41,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable924 [2021-03-11 14:38:41,992 INFO L428 AbstractCegarLoop]: === Iteration 926 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:41,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:41,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1113229963, now seen corresponding path program 920 times [2021-03-11 14:38:41,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:41,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046712122] [2021-03-11 14:38:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:41,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:41,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:42,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:42,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:42,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:42,027 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:42,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:42,056 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:42,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:42,089 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:42,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:42,118 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:42,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:42,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:42,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:42,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046712122] [2021-03-11 14:38:42,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:42,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:42,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962684694] [2021-03-11 14:38:42,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:42,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:42,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:42,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:42,188 INFO L87 Difference]: Start difference. First operand 386 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:42,301 INFO L93 Difference]: Finished difference Result 584 states and 1731 transitions. [2021-03-11 14:38:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:42,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:42,303 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:38:42,303 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:38:42,303 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:38:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 384. [2021-03-11 14:38:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:38:42,309 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:42,309 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:38:42,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,309 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:38:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:42,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:42,310 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:42,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable925 [2021-03-11 14:38:42,310 INFO L428 AbstractCegarLoop]: === Iteration 927 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:42,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1496095709, now seen corresponding path program 921 times [2021-03-11 14:38:42,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:42,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213485449] [2021-03-11 14:38:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:42,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:42,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:42,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:42,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:42,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:42,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:42,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:42,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:42,403 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:42,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:42,447 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:42,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:42,483 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:42,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:42,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213485449] [2021-03-11 14:38:42,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:42,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:42,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675952263] [2021-03-11 14:38:42,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:42,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:42,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:42,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:42,517 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:42,633 INFO L93 Difference]: Finished difference Result 593 states and 1749 transitions. [2021-03-11 14:38:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:42,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:42,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:42,635 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:38:42,635 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:38:42,635 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 242.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:42,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:38:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 388. [2021-03-11 14:38:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.44702842377261) internal successors, (1334), 387 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1334 transitions. [2021-03-11 14:38:42,641 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1334 transitions. Word has length 22 [2021-03-11 14:38:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:42,641 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1334 transitions. [2021-03-11 14:38:42,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1334 transitions. [2021-03-11 14:38:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:42,642 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:42,642 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:42,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable926 [2021-03-11 14:38:42,642 INFO L428 AbstractCegarLoop]: === Iteration 928 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1569403121, now seen corresponding path program 922 times [2021-03-11 14:38:42,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:42,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038884730] [2021-03-11 14:38:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:42,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:42,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:42,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:42,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:42,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:42,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:42,711 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:42,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:42,745 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:42,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:42,789 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:42,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:42,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:42,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:42,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038884730] [2021-03-11 14:38:42,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:42,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:42,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344492986] [2021-03-11 14:38:42,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:42,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:42,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:42,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:42,858 INFO L87 Difference]: Start difference. First operand 388 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:42,957 INFO L93 Difference]: Finished difference Result 598 states and 1755 transitions. [2021-03-11 14:38:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:42,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:42,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:42,959 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:38:42,959 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:38:42,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:38:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 384. [2021-03-11 14:38:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4569190600522193) internal successors, (1324), 383 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1324 transitions. [2021-03-11 14:38:42,965 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:42,965 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1324 transitions. [2021-03-11 14:38:42,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1324 transitions. [2021-03-11 14:38:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:42,966 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:42,966 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:42,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable927 [2021-03-11 14:38:42,966 INFO L428 AbstractCegarLoop]: === Iteration 929 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash -22192653, now seen corresponding path program 923 times [2021-03-11 14:38:42,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:42,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993616076] [2021-03-11 14:38:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:42,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:42,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:42,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:42,988 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:42,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:43,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:43,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:43,044 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:43,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:43,078 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:43,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:43,131 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:43,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:43,169 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:43,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:43,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993616076] [2021-03-11 14:38:43,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:43,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:43,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173710569] [2021-03-11 14:38:43,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:43,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:43,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:43,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:43,204 INFO L87 Difference]: Start difference. First operand 384 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:43,319 INFO L93 Difference]: Finished difference Result 590 states and 1739 transitions. [2021-03-11 14:38:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:43,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:43,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:43,321 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:38:43,321 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:38:43,321 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 265.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:43,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:38:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 387. [2021-03-11 14:38:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.44300518134715) internal successors, (1329), 386 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1329 transitions. [2021-03-11 14:38:43,327 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1329 transitions. Word has length 22 [2021-03-11 14:38:43,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:43,327 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1329 transitions. [2021-03-11 14:38:43,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1329 transitions. [2021-03-11 14:38:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:43,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:43,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:43,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable928 [2021-03-11 14:38:43,328 INFO L428 AbstractCegarLoop]: === Iteration 930 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:43,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:43,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1293964651, now seen corresponding path program 924 times [2021-03-11 14:38:43,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:43,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59338107] [2021-03-11 14:38:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:43,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:43,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:43,342 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:43,360 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:43,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:43,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:43,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:43,420 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:43,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:43,468 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:43,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:43,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59338107] [2021-03-11 14:38:43,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:43,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:43,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164137418] [2021-03-11 14:38:43,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:43,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:43,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:43,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:43,538 INFO L87 Difference]: Start difference. First operand 387 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:43,637 INFO L93 Difference]: Finished difference Result 596 states and 1748 transitions. [2021-03-11 14:38:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:43,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:43,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:43,638 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:38:43,638 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:38:43,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 223.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:38:43,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 381. [2021-03-11 14:38:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.463157894736842) internal successors, (1316), 380 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1316 transitions. [2021-03-11 14:38:43,644 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:43,644 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1316 transitions. [2021-03-11 14:38:43,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1316 transitions. [2021-03-11 14:38:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:43,645 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:43,645 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:43,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable929 [2021-03-11 14:38:43,645 INFO L428 AbstractCegarLoop]: === Iteration 931 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1730701541, now seen corresponding path program 925 times [2021-03-11 14:38:43,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:43,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084678258] [2021-03-11 14:38:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:43,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:43,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:43,660 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:43,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:43,679 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:43,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:43,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:43,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:43,742 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:43,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:43,770 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:43,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:43,805 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:43,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:43,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084678258] [2021-03-11 14:38:43,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:43,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:43,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900598700] [2021-03-11 14:38:43,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:43,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:43,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:43,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:43,842 INFO L87 Difference]: Start difference. First operand 381 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:43,949 INFO L93 Difference]: Finished difference Result 594 states and 1756 transitions. [2021-03-11 14:38:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:43,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:43,951 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:38:43,952 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:38:43,952 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:38:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 388. [2021-03-11 14:38:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.449612403100775) internal successors, (1335), 387 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1335 transitions. [2021-03-11 14:38:43,958 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1335 transitions. Word has length 22 [2021-03-11 14:38:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:43,958 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1335 transitions. [2021-03-11 14:38:43,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1335 transitions. [2021-03-11 14:38:43,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:43,959 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:43,959 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:43,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable930 [2021-03-11 14:38:43,959 INFO L428 AbstractCegarLoop]: === Iteration 932 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash -322923971, now seen corresponding path program 926 times [2021-03-11 14:38:43,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:43,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686552008] [2021-03-11 14:38:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:43,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:43,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:43,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:43,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:43,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:44,006 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:44,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:44,040 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:44,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:44,087 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:44,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:44,120 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:44,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:44,160 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:44,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:44,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:44,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686552008] [2021-03-11 14:38:44,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:44,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:44,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380942847] [2021-03-11 14:38:44,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:44,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:44,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:44,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:44,198 INFO L87 Difference]: Start difference. First operand 388 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:44,323 INFO L93 Difference]: Finished difference Result 595 states and 1755 transitions. [2021-03-11 14:38:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:44,325 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:38:44,325 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:38:44,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 272.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:38:44,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 385. [2021-03-11 14:38:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:38:44,331 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:44,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:44,331 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:38:44,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:38:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:44,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:44,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:44,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable931 [2021-03-11 14:38:44,332 INFO L428 AbstractCegarLoop]: === Iteration 933 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:44,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1470174167, now seen corresponding path program 927 times [2021-03-11 14:38:44,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:44,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78535535] [2021-03-11 14:38:44,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:44,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:44,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:44,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:44,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:44,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:44,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:44,393 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:44,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:44,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:44,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:44,476 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:44,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:44,511 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:44,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:44,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78535535] [2021-03-11 14:38:44,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:44,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:44,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859777903] [2021-03-11 14:38:44,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:44,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:44,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:44,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:44,546 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:44,659 INFO L93 Difference]: Finished difference Result 595 states and 1752 transitions. [2021-03-11 14:38:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:44,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:44,661 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:38:44,661 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:38:44,661 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:38:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 389. [2021-03-11 14:38:44,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4381443298969074) internal successors, (1334), 388 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1334 transitions. [2021-03-11 14:38:44,667 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1334 transitions. Word has length 22 [2021-03-11 14:38:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:44,667 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1334 transitions. [2021-03-11 14:38:44,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1334 transitions. [2021-03-11 14:38:44,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:44,667 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:44,667 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:44,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable932 [2021-03-11 14:38:44,668 INFO L428 AbstractCegarLoop]: === Iteration 934 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1396866755, now seen corresponding path program 928 times [2021-03-11 14:38:44,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:44,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551680323] [2021-03-11 14:38:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:44,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:44,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:44,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:44,700 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:44,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:44,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:44,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:44,761 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:44,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:44,805 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:44,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:44,841 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:44,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:44,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551680323] [2021-03-11 14:38:44,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:44,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:44,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163158827] [2021-03-11 14:38:44,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:44,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:44,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:44,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:44,874 INFO L87 Difference]: Start difference. First operand 389 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:44,968 INFO L93 Difference]: Finished difference Result 600 states and 1758 transitions. [2021-03-11 14:38:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:44,970 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:38:44,970 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:38:44,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:38:44,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 385. [2021-03-11 14:38:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4453125) internal successors, (1323), 384 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1323 transitions. [2021-03-11 14:38:44,976 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:44,976 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1323 transitions. [2021-03-11 14:38:44,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1323 transitions. [2021-03-11 14:38:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:44,977 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:44,977 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:44,977 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable933 [2021-03-11 14:38:44,977 INFO L428 AbstractCegarLoop]: === Iteration 935 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:44,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1949605801, now seen corresponding path program 929 times [2021-03-11 14:38:44,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:44,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175861826] [2021-03-11 14:38:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:44,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:44,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:44,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:44,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:44,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:45,009 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:45,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:45,036 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:45,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:45,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:45,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:45,118 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:45,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:45,149 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:45,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:45,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175861826] [2021-03-11 14:38:45,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:45,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239080008] [2021-03-11 14:38:45,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:45,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:45,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:45,178 INFO L87 Difference]: Start difference. First operand 385 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:45,290 INFO L93 Difference]: Finished difference Result 598 states and 1755 transitions. [2021-03-11 14:38:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:45,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:45,292 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:38:45,292 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:38:45,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:45,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:38:45,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 390. [2021-03-11 14:38:45,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.424164524421594) internal successors, (1332), 389 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1332 transitions. [2021-03-11 14:38:45,299 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1332 transitions. Word has length 22 [2021-03-11 14:38:45,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:45,299 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1332 transitions. [2021-03-11 14:38:45,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,299 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1332 transitions. [2021-03-11 14:38:45,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:45,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:45,299 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:45,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable934 [2021-03-11 14:38:45,299 INFO L428 AbstractCegarLoop]: === Iteration 936 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:45,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:45,300 INFO L82 PathProgramCache]: Analyzing trace with hash -634748187, now seen corresponding path program 930 times [2021-03-11 14:38:45,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:45,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8766281] [2021-03-11 14:38:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:45,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:45,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:45,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:45,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:45,335 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:45,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:45,365 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:45,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:45,412 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:45,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:45,463 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:45,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:45,503 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:45,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:45,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8766281] [2021-03-11 14:38:45,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:45,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:45,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221172486] [2021-03-11 14:38:45,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:45,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:45,540 INFO L87 Difference]: Start difference. First operand 390 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:45,641 INFO L93 Difference]: Finished difference Result 594 states and 1744 transitions. [2021-03-11 14:38:45,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:45,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:45,643 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:38:45,643 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:38:45,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 256.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:38:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 381. [2021-03-11 14:38:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.455263157894737) internal successors, (1313), 380 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1313 transitions. [2021-03-11 14:38:45,649 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1313 transitions. Word has length 22 [2021-03-11 14:38:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:45,649 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1313 transitions. [2021-03-11 14:38:45,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1313 transitions. [2021-03-11 14:38:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:45,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:45,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:45,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable935 [2021-03-11 14:38:45,650 INFO L428 AbstractCegarLoop]: === Iteration 937 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:45,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:45,650 INFO L82 PathProgramCache]: Analyzing trace with hash -137881479, now seen corresponding path program 931 times [2021-03-11 14:38:45,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:45,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262282082] [2021-03-11 14:38:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:45,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:45,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:45,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:45,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:45,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:45,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:45,710 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:45,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:45,746 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:45,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:45,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:45,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:45,810 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:45,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262282082] [2021-03-11 14:38:45,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:45,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:45,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429908944] [2021-03-11 14:38:45,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:45,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:45,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:45,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:45,843 INFO L87 Difference]: Start difference. First operand 381 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:45,973 INFO L93 Difference]: Finished difference Result 587 states and 1734 transitions. [2021-03-11 14:38:45,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:45,975 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:38:45,976 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:38:45,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:45,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:38:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 386. [2021-03-11 14:38:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.444155844155844) internal successors, (1326), 385 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1326 transitions. [2021-03-11 14:38:45,982 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:45,982 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1326 transitions. [2021-03-11 14:38:45,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:45,982 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1326 transitions. [2021-03-11 14:38:45,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:45,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:45,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:45,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable936 [2021-03-11 14:38:45,982 INFO L428 AbstractCegarLoop]: === Iteration 938 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash -311129171, now seen corresponding path program 932 times [2021-03-11 14:38:45,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:45,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333271468] [2021-03-11 14:38:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:45,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:45,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:45,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:45,997 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:45,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:46,015 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:46,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:46,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:46,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:46,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:46,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:46,105 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:46,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:46,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:46,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:46,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333271468] [2021-03-11 14:38:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:46,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123950113] [2021-03-11 14:38:46,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:46,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:46,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:46,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:46,188 INFO L87 Difference]: Start difference. First operand 386 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:46,314 INFO L93 Difference]: Finished difference Result 589 states and 1736 transitions. [2021-03-11 14:38:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:46,316 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:38:46,316 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:38:46,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 257.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:46,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:38:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 384. [2021-03-11 14:38:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:38:46,322 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:46,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:46,322 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:38:46,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:38:46,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:46,323 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:46,323 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:46,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable937 [2021-03-11 14:38:46,323 INFO L428 AbstractCegarLoop]: === Iteration 939 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1210966859, now seen corresponding path program 933 times [2021-03-11 14:38:46,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:46,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176005119] [2021-03-11 14:38:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:46,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:46,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:46,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:46,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:46,337 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:46,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:46,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:46,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:46,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:46,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:46,417 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:46,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:46,466 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:46,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:46,502 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:46,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176005119] [2021-03-11 14:38:46,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:46,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:46,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276679110] [2021-03-11 14:38:46,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:46,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:46,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:46,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:46,536 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:46,656 INFO L93 Difference]: Finished difference Result 589 states and 1734 transitions. [2021-03-11 14:38:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:46,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:46,658 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:38:46,658 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:38:46,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 251.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:46,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:38:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 387. [2021-03-11 14:38:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.435233160621762) internal successors, (1326), 386 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1326 transitions. [2021-03-11 14:38:46,664 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:46,664 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1326 transitions. [2021-03-11 14:38:46,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1326 transitions. [2021-03-11 14:38:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:46,664 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:46,665 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:46,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable938 [2021-03-11 14:38:46,665 INFO L428 AbstractCegarLoop]: === Iteration 940 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:46,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:46,665 INFO L82 PathProgramCache]: Analyzing trace with hash 105190445, now seen corresponding path program 934 times [2021-03-11 14:38:46,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:46,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106961909] [2021-03-11 14:38:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:46,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:46,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:46,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:46,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:46,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:46,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:46,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:46,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:46,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:46,754 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:46,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:46,799 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:46,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:46,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:46,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:46,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106961909] [2021-03-11 14:38:46,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:46,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834079539] [2021-03-11 14:38:46,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:46,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:46,861 INFO L87 Difference]: Start difference. First operand 387 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:46,984 INFO L93 Difference]: Finished difference Result 595 states and 1743 transitions. [2021-03-11 14:38:46,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:46,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:46,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:46,986 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:38:46,986 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:38:46,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 213.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:38:46,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 384. [2021-03-11 14:38:46,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.441253263707572) internal successors, (1318), 383 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1318 transitions. [2021-03-11 14:38:46,992 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:46,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:46,992 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1318 transitions. [2021-03-11 14:38:46,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:46,992 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1318 transitions. [2021-03-11 14:38:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:46,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:46,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:46,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable939 [2021-03-11 14:38:46,993 INFO L428 AbstractCegarLoop]: === Iteration 941 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:46,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:46,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1835041589, now seen corresponding path program 935 times [2021-03-11 14:38:46,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:46,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265660382] [2021-03-11 14:38:46,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:46,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:46,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:46,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:47,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:47,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:47,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:47,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:47,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:47,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:47,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:47,102 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:47,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:47,150 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:47,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:47,185 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:47,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:47,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265660382] [2021-03-11 14:38:47,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:47,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:47,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792886928] [2021-03-11 14:38:47,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:47,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:47,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:47,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:47,220 INFO L87 Difference]: Start difference. First operand 384 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:47,339 INFO L93 Difference]: Finished difference Result 595 states and 1745 transitions. [2021-03-11 14:38:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:47,341 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:38:47,341 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:38:47,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 260.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:38:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 389. [2021-03-11 14:38:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.420103092783505) internal successors, (1327), 388 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1327 transitions. [2021-03-11 14:38:47,347 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1327 transitions. Word has length 22 [2021-03-11 14:38:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:47,347 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1327 transitions. [2021-03-11 14:38:47,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1327 transitions. [2021-03-11 14:38:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:47,348 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:47,348 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:47,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable940 [2021-03-11 14:38:47,348 INFO L428 AbstractCegarLoop]: === Iteration 942 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -970520711, now seen corresponding path program 936 times [2021-03-11 14:38:47,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:47,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508295079] [2021-03-11 14:38:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:47,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:47,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:47,362 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:47,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:47,381 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:47,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:47,408 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:47,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:47,443 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:47,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:47,490 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:47,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:47,529 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:47,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:47,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508295079] [2021-03-11 14:38:47,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:47,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:47,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198394611] [2021-03-11 14:38:47,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:47,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:47,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:47,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:47,564 INFO L87 Difference]: Start difference. First operand 389 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:47,670 INFO L93 Difference]: Finished difference Result 591 states and 1734 transitions. [2021-03-11 14:38:47,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:47,672 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:38:47,672 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:38:47,672 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:38:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 378. [2021-03-11 14:38:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4641909814323606) internal successors, (1306), 377 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1306 transitions. [2021-03-11 14:38:47,678 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1306 transitions. Word has length 22 [2021-03-11 14:38:47,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:47,678 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1306 transitions. [2021-03-11 14:38:47,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,678 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1306 transitions. [2021-03-11 14:38:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:47,679 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:47,679 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:47,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable941 [2021-03-11 14:38:47,679 INFO L428 AbstractCegarLoop]: === Iteration 943 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:47,679 INFO L82 PathProgramCache]: Analyzing trace with hash -110186631, now seen corresponding path program 937 times [2021-03-11 14:38:47,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:47,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071837021] [2021-03-11 14:38:47,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:47,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:47,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:47,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:47,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:47,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:47,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:47,739 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:47,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:47,761 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:47,790 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:47,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:47,827 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:47,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:47,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071837021] [2021-03-11 14:38:47,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:47,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:47,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890719012] [2021-03-11 14:38:47,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:47,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:47,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:47,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:47,861 INFO L87 Difference]: Start difference. First operand 378 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:47,963 INFO L93 Difference]: Finished difference Result 558 states and 1663 transitions. [2021-03-11 14:38:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:47,965 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:38:47,965 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:38:47,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:38:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 382. [2021-03-11 14:38:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.459317585301837) internal successors, (1318), 381 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1318 transitions. [2021-03-11 14:38:47,971 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:47,971 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1318 transitions. [2021-03-11 14:38:47,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1318 transitions. [2021-03-11 14:38:47,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:47,971 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:47,971 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:47,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable942 [2021-03-11 14:38:47,971 INFO L428 AbstractCegarLoop]: === Iteration 944 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:47,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:47,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1500754327, now seen corresponding path program 938 times [2021-03-11 14:38:47,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:47,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024147161] [2021-03-11 14:38:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:47,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:47,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:47,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:47,986 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:47,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:48,004 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:48,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:48,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:48,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:48,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:48,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:48,083 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:48,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:48,118 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:48,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:48,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024147161] [2021-03-11 14:38:48,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:48,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:48,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142171016] [2021-03-11 14:38:48,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:48,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:48,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:48,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:48,152 INFO L87 Difference]: Start difference. First operand 382 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:48,261 INFO L93 Difference]: Finished difference Result 559 states and 1664 transitions. [2021-03-11 14:38:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:48,263 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:38:48,263 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:38:48,264 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 217.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:38:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 381. [2021-03-11 14:38:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.463157894736842) internal successors, (1316), 380 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1316 transitions. [2021-03-11 14:38:48,269 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:48,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:48,269 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1316 transitions. [2021-03-11 14:38:48,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1316 transitions. [2021-03-11 14:38:48,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:48,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:48,270 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:48,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable943 [2021-03-11 14:38:48,270 INFO L428 AbstractCegarLoop]: === Iteration 945 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash 902505901, now seen corresponding path program 939 times [2021-03-11 14:38:48,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:48,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118749280] [2021-03-11 14:38:48,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:48,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:48,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:48,284 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:48,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:48,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:48,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:48,329 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:48,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:48,352 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:48,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:48,399 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:48,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:48,436 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:48,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:48,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118749280] [2021-03-11 14:38:48,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:48,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:48,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359710358] [2021-03-11 14:38:48,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:48,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:48,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:48,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:48,470 INFO L87 Difference]: Start difference. First operand 381 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:48,562 INFO L93 Difference]: Finished difference Result 560 states and 1666 transitions. [2021-03-11 14:38:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:48,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:48,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:48,564 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:38:48,564 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:38:48,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 212.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:48,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:38:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 382. [2021-03-11 14:38:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.456692913385827) internal successors, (1317), 381 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1317 transitions. [2021-03-11 14:38:48,570 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:48,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:48,570 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1317 transitions. [2021-03-11 14:38:48,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1317 transitions. [2021-03-11 14:38:48,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:48,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:48,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:48,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable944 [2021-03-11 14:38:48,571 INFO L428 AbstractCegarLoop]: === Iteration 946 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:48,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:48,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1437735703, now seen corresponding path program 940 times [2021-03-11 14:38:48,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:48,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049875225] [2021-03-11 14:38:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:48,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:48,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:48,591 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:48,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:48,612 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:48,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:48,640 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:48,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:48,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:48,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:48,711 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:48,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:48,745 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:48,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:48,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:48,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049875225] [2021-03-11 14:38:48,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:48,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:48,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029678004] [2021-03-11 14:38:48,781 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:48,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:48,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:48,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:48,781 INFO L87 Difference]: Start difference. First operand 382 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:48,910 INFO L93 Difference]: Finished difference Result 563 states and 1671 transitions. [2021-03-11 14:38:48,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:48,912 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:38:48,912 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:38:48,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 241.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:38:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 381. [2021-03-11 14:38:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.460526315789474) internal successors, (1315), 380 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1315 transitions. [2021-03-11 14:38:48,918 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1315 transitions. Word has length 22 [2021-03-11 14:38:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:48,918 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1315 transitions. [2021-03-11 14:38:48,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1315 transitions. [2021-03-11 14:38:48,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:48,918 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:48,918 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:48,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable945 [2021-03-11 14:38:48,919 INFO L428 AbstractCegarLoop]: === Iteration 947 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:48,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:48,919 INFO L82 PathProgramCache]: Analyzing trace with hash 913009005, now seen corresponding path program 941 times [2021-03-11 14:38:48,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:48,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780414369] [2021-03-11 14:38:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:48,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:48,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:48,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:48,933 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:48,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:48,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:48,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:48,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:48,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:49,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:49,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:49,033 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:49,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:49,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:49,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:49,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780414369] [2021-03-11 14:38:49,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:49,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:49,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593117659] [2021-03-11 14:38:49,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:49,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:49,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:49,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:49,111 INFO L87 Difference]: Start difference. First operand 381 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:49,231 INFO L93 Difference]: Finished difference Result 563 states and 1672 transitions. [2021-03-11 14:38:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:49,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:49,233 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:38:49,233 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:49,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 229.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:49,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 383. [2021-03-11 14:38:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.450261780104712) internal successors, (1318), 382 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1318 transitions. [2021-03-11 14:38:49,239 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:49,239 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1318 transitions. [2021-03-11 14:38:49,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1318 transitions. [2021-03-11 14:38:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:49,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:49,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:49,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable946 [2021-03-11 14:38:49,239 INFO L428 AbstractCegarLoop]: === Iteration 948 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash -162702151, now seen corresponding path program 942 times [2021-03-11 14:38:49,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:49,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544829320] [2021-03-11 14:38:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:49,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:49,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:49,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:49,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:49,273 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:49,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:49,299 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:38:49,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:38:49,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:49,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:49,348 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:49,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:49,382 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:49,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:49,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544829320] [2021-03-11 14:38:49,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:49,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:49,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294203440] [2021-03-11 14:38:49,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:49,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:49,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:49,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:49,417 INFO L87 Difference]: Start difference. First operand 383 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:49,528 INFO L93 Difference]: Finished difference Result 565 states and 1674 transitions. [2021-03-11 14:38:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:49,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:49,530 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:38:49,530 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:38:49,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:38:49,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 380. [2021-03-11 14:38:49,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4643799472295513) internal successors, (1313), 379 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1313 transitions. [2021-03-11 14:38:49,536 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1313 transitions. Word has length 22 [2021-03-11 14:38:49,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:49,536 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1313 transitions. [2021-03-11 14:38:49,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1313 transitions. [2021-03-11 14:38:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:49,536 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:49,536 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:49,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable947 [2021-03-11 14:38:49,536 INFO L428 AbstractCegarLoop]: === Iteration 949 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:49,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:49,536 INFO L82 PathProgramCache]: Analyzing trace with hash -553085771, now seen corresponding path program 943 times [2021-03-11 14:38:49,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:49,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462862025] [2021-03-11 14:38:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:49,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:49,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:49,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:49,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:49,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:49,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:49,599 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:49,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:49,642 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:49,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:49,670 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:49,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:49,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:49,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:49,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:49,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462862025] [2021-03-11 14:38:49,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:49,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:49,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058360699] [2021-03-11 14:38:49,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:49,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:49,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:49,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:49,735 INFO L87 Difference]: Start difference. First operand 380 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:49,825 INFO L93 Difference]: Finished difference Result 563 states and 1670 transitions. [2021-03-11 14:38:49,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:49,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:49,827 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:38:49,827 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:38:49,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:38:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 383. [2021-03-11 14:38:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:38:49,833 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:38:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:49,833 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:38:49,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:38:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:49,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:49,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:49,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable948 [2021-03-11 14:38:49,833 INFO L428 AbstractCegarLoop]: === Iteration 950 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:49,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:49,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1057855187, now seen corresponding path program 944 times [2021-03-11 14:38:49,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:49,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712603004] [2021-03-11 14:38:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:49,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:49,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:49,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:49,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:49,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:49,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:49,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:49,897 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:49,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:49,937 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:38:49,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:38:49,967 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:49,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:50,003 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:50,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:50,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712603004] [2021-03-11 14:38:50,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:50,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:50,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036992202] [2021-03-11 14:38:50,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:50,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:50,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:50,038 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:50,161 INFO L93 Difference]: Finished difference Result 564 states and 1671 transitions. [2021-03-11 14:38:50,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:50,162 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:50,163 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:38:50,163 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:38:50,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 241.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:50,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:38:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 382. [2021-03-11 14:38:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.459317585301837) internal successors, (1318), 381 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1318 transitions. [2021-03-11 14:38:50,169 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:50,169 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1318 transitions. [2021-03-11 14:38:50,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1318 transitions. [2021-03-11 14:38:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:50,169 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:50,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:50,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable949 [2021-03-11 14:38:50,169 INFO L428 AbstractCegarLoop]: === Iteration 951 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:50,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:50,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1553698349, now seen corresponding path program 945 times [2021-03-11 14:38:50,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:50,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334846349] [2021-03-11 14:38:50,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:50,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:50,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:50,187 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:50,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:50,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:50,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:50,234 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:50,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:50,274 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:50,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:50,315 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:50,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:50,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:50,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:50,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334846349] [2021-03-11 14:38:50,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:50,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:50,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078672864] [2021-03-11 14:38:50,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:50,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:50,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:50,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:50,388 INFO L87 Difference]: Start difference. First operand 382 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:50,478 INFO L93 Difference]: Finished difference Result 570 states and 1682 transitions. [2021-03-11 14:38:50,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:50,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:50,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:50,480 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:38:50,480 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:50,480 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 228.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:50,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:50,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 384. [2021-03-11 14:38:50,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:38:50,486 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:50,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:50,486 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:38:50,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,486 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:38:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:50,486 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:50,487 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:50,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable950 [2021-03-11 14:38:50,487 INFO L428 AbstractCegarLoop]: === Iteration 952 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1015842771, now seen corresponding path program 946 times [2021-03-11 14:38:50,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:50,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254543129] [2021-03-11 14:38:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:50,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:50,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:50,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:50,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:50,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:50,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:50,548 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:50,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:50,588 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:50,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:50,629 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:50,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:50,665 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:50,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:50,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:50,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254543129] [2021-03-11 14:38:50,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:50,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:50,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763537576] [2021-03-11 14:38:50,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:50,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:50,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:50,699 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:50,802 INFO L93 Difference]: Finished difference Result 577 states and 1694 transitions. [2021-03-11 14:38:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:50,804 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:38:50,804 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:38:50,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:38:50,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 382. [2021-03-11 14:38:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:38:50,810 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:50,810 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:38:50,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:38:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:50,810 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:50,810 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:50,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable951 [2021-03-11 14:38:50,810 INFO L428 AbstractCegarLoop]: === Iteration 953 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:50,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1564201453, now seen corresponding path program 947 times [2021-03-11 14:38:50,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:50,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528156104] [2021-03-11 14:38:50,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:50,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:50,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:50,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:50,825 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:50,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:50,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:50,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:50,870 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:50,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:50,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:50,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:50,949 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:50,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:50,980 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:50,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:51,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:51,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528156104] [2021-03-11 14:38:51,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:51,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:51,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721748091] [2021-03-11 14:38:51,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:51,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:51,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:51,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:51,011 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:51,136 INFO L93 Difference]: Finished difference Result 573 states and 1687 transitions. [2021-03-11 14:38:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:51,138 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:38:51,138 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:51,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 242.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:51,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 385. [2021-03-11 14:38:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4401041666666665) internal successors, (1321), 384 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1321 transitions. [2021-03-11 14:38:51,144 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1321 transitions. Word has length 22 [2021-03-11 14:38:51,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:51,144 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1321 transitions. [2021-03-11 14:38:51,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,144 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1321 transitions. [2021-03-11 14:38:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:51,145 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:51,145 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:51,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable952 [2021-03-11 14:38:51,145 INFO L428 AbstractCegarLoop]: === Iteration 954 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:51,145 INFO L82 PathProgramCache]: Analyzing trace with hash -584595083, now seen corresponding path program 948 times [2021-03-11 14:38:51,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:51,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764206196] [2021-03-11 14:38:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:51,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:51,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:51,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:51,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:51,178 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:51,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:51,206 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:51,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:51,246 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:51,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:51,297 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:51,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:51,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:51,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:51,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:51,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764206196] [2021-03-11 14:38:51,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:51,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:51,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942497410] [2021-03-11 14:38:51,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:51,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:51,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:51,368 INFO L87 Difference]: Start difference. First operand 385 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:51,468 INFO L93 Difference]: Finished difference Result 579 states and 1696 transitions. [2021-03-11 14:38:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:51,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:51,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:51,470 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:51,470 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:38:51,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:38:51,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 380. [2021-03-11 14:38:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:38:51,476 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:38:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:51,477 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:38:51,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:38:51,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:51,477 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:51,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:51,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable953 [2021-03-11 14:38:51,477 INFO L428 AbstractCegarLoop]: === Iteration 955 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:51,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1788304181, now seen corresponding path program 949 times [2021-03-11 14:38:51,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:51,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809927199] [2021-03-11 14:38:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:51,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:51,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:51,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:51,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:51,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:51,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:51,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:51,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:51,577 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:51,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:51,624 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:51,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:51,662 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:51,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:51,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809927199] [2021-03-11 14:38:51,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:51,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:51,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19765470] [2021-03-11 14:38:51,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:51,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:51,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:51,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:51,698 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:51,801 INFO L93 Difference]: Finished difference Result 569 states and 1682 transitions. [2021-03-11 14:38:51,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:51,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:51,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:51,803 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:38:51,803 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:38:51,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 232.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:51,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:38:51,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 383. [2021-03-11 14:38:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.450261780104712) internal successors, (1318), 382 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1318 transitions. [2021-03-11 14:38:51,809 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1318 transitions. Word has length 22 [2021-03-11 14:38:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:51,809 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1318 transitions. [2021-03-11 14:38:51,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1318 transitions. [2021-03-11 14:38:51,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:51,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:51,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:51,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable954 [2021-03-11 14:38:51,809 INFO L428 AbstractCegarLoop]: === Iteration 956 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:51,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1971433313, now seen corresponding path program 950 times [2021-03-11 14:38:51,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:51,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885591036] [2021-03-11 14:38:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:51,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:51,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:51,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:51,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:51,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:51,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:51,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:51,863 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:51,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:51,895 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:51,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:51,936 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:51,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:51,972 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:51,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:52,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885591036] [2021-03-11 14:38:52,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:52,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:52,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869374286] [2021-03-11 14:38:52,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:52,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:52,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:52,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:52,009 INFO L87 Difference]: Start difference. First operand 383 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:52,142 INFO L93 Difference]: Finished difference Result 572 states and 1687 transitions. [2021-03-11 14:38:52,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:52,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:52,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:52,144 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:38:52,144 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:38:52,144 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 244.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:52,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:38:52,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 382. [2021-03-11 14:38:52,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:38:52,150 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:38:52,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:52,150 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:38:52,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,151 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:38:52,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:52,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:52,151 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:52,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable955 [2021-03-11 14:38:52,151 INFO L428 AbstractCegarLoop]: === Iteration 957 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1412571527, now seen corresponding path program 951 times [2021-03-11 14:38:52,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:52,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192495348] [2021-03-11 14:38:52,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:52,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:52,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:52,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:52,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:52,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:52,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:52,213 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:52,250 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:52,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:52,294 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:52,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:52,336 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:52,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:52,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192495348] [2021-03-11 14:38:52,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:52,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:52,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729039182] [2021-03-11 14:38:52,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:52,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:52,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:52,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:52,375 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:52,463 INFO L93 Difference]: Finished difference Result 572 states and 1686 transitions. [2021-03-11 14:38:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:52,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:52,465 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:38:52,465 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:38:52,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:38:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 384. [2021-03-11 14:38:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4438642297650133) internal successors, (1319), 383 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1319 transitions. [2021-03-11 14:38:52,471 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1319 transitions. Word has length 22 [2021-03-11 14:38:52,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:52,471 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1319 transitions. [2021-03-11 14:38:52,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1319 transitions. [2021-03-11 14:38:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:52,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:52,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:52,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable956 [2021-03-11 14:38:52,472 INFO L428 AbstractCegarLoop]: === Iteration 958 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:52,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1950427105, now seen corresponding path program 952 times [2021-03-11 14:38:52,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:52,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675605953] [2021-03-11 14:38:52,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:52,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:52,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:52,487 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:52,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:52,506 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:52,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:52,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:52,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:52,572 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:52,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:52,613 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:52,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:52,650 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:52,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:52,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:52,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675605953] [2021-03-11 14:38:52,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:52,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:52,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119907428] [2021-03-11 14:38:52,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:52,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:52,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:52,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:52,685 INFO L87 Difference]: Start difference. First operand 384 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:52,795 INFO L93 Difference]: Finished difference Result 579 states and 1698 transitions. [2021-03-11 14:38:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:52,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:52,797 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:38:52,797 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:38:52,797 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 226.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:52,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:38:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 382. [2021-03-11 14:38:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:38:52,803 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:52,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:52,803 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:38:52,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:38:52,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:52,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:52,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:52,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable957 [2021-03-11 14:38:52,803 INFO L428 AbstractCegarLoop]: === Iteration 959 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:52,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:52,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1465087047, now seen corresponding path program 953 times [2021-03-11 14:38:52,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:52,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493293845] [2021-03-11 14:38:52,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:52,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:52,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:52,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:52,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:52,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:52,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:52,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:52,865 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:52,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:52,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:52,951 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:52,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:52,988 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:52,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:53,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493293845] [2021-03-11 14:38:53,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:53,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:53,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816244693] [2021-03-11 14:38:53,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:53,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:53,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:53,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:53,020 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:53,118 INFO L93 Difference]: Finished difference Result 581 states and 1705 transitions. [2021-03-11 14:38:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:53,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:53,119 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:38:53,119 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:38:53,119 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 247.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:38:53,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 387. [2021-03-11 14:38:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4274611398963732) internal successors, (1323), 386 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1323 transitions. [2021-03-11 14:38:53,125 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:53,125 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1323 transitions. [2021-03-11 14:38:53,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1323 transitions. [2021-03-11 14:38:53,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:53,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:53,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:53,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable958 [2021-03-11 14:38:53,126 INFO L428 AbstractCegarLoop]: === Iteration 960 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:53,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:53,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1756794869, now seen corresponding path program 954 times [2021-03-11 14:38:53,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:53,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573576360] [2021-03-11 14:38:53,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:53,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:53,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:53,140 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:53,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:53,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:53,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:53,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:53,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:53,220 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:53,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:53,270 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:53,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:53,310 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:53,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:53,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573576360] [2021-03-11 14:38:53,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:53,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:53,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805030705] [2021-03-11 14:38:53,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:53,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:53,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:53,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:53,357 INFO L87 Difference]: Start difference. First operand 387 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:53,473 INFO L93 Difference]: Finished difference Result 577 states and 1694 transitions. [2021-03-11 14:38:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:53,475 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:38:53,475 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:38:53,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 244.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:38:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 380. [2021-03-11 14:38:53,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:38:53,481 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:38:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:53,481 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:38:53,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:38:53,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:53,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:53,481 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:53,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable959 [2021-03-11 14:38:53,482 INFO L428 AbstractCegarLoop]: === Iteration 961 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:53,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:53,482 INFO L82 PathProgramCache]: Analyzing trace with hash -570125933, now seen corresponding path program 955 times [2021-03-11 14:38:53,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:53,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519463928] [2021-03-11 14:38:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:53,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:53,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:53,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:53,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:53,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:53,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:53,545 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:53,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:53,581 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:53,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:53,609 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:53,646 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:53,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:53,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519463928] [2021-03-11 14:38:53,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:53,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:53,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909586073] [2021-03-11 14:38:53,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:53,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:53,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:53,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:53,681 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:53,812 INFO L93 Difference]: Finished difference Result 576 states and 1699 transitions. [2021-03-11 14:38:53,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:53,814 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:38:53,814 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:38:53,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 240.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:38:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 385. [2021-03-11 14:38:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4427083333333335) internal successors, (1322), 384 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1322 transitions. [2021-03-11 14:38:53,820 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1322 transitions. Word has length 22 [2021-03-11 14:38:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:53,820 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1322 transitions. [2021-03-11 14:38:53,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1322 transitions. [2021-03-11 14:38:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:53,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:53,821 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:53,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable960 [2021-03-11 14:38:53,821 INFO L428 AbstractCegarLoop]: === Iteration 962 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:53,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1645837089, now seen corresponding path program 956 times [2021-03-11 14:38:53,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:53,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515145406] [2021-03-11 14:38:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:53,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:53,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:53,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:53,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:53,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:53,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:53,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:53,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:53,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:53,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:53,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:53,950 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:53,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:53,987 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:53,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:54,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515145406] [2021-03-11 14:38:54,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:54,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:54,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989594477] [2021-03-11 14:38:54,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:54,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:54,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:54,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:54,022 INFO L87 Difference]: Start difference. First operand 385 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:54,148 INFO L93 Difference]: Finished difference Result 578 states and 1701 transitions. [2021-03-11 14:38:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:54,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:54,150 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:38:54,150 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:38:54,150 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 238.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:54,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:38:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 383. [2021-03-11 14:38:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4476439790575917) internal successors, (1317), 382 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1317 transitions. [2021-03-11 14:38:54,156 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1317 transitions. Word has length 22 [2021-03-11 14:38:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:54,156 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1317 transitions. [2021-03-11 14:38:54,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1317 transitions. [2021-03-11 14:38:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:54,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:54,157 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:54,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable961 [2021-03-11 14:38:54,157 INFO L428 AbstractCegarLoop]: === Iteration 963 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:54,157 INFO L82 PathProgramCache]: Analyzing trace with hash 523965655, now seen corresponding path program 957 times [2021-03-11 14:38:54,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011391636] [2021-03-11 14:38:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:54,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:54,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:54,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:54,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:54,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:54,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:54,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:54,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:54,258 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:54,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:54,309 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:54,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:54,347 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:54,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:54,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011391636] [2021-03-11 14:38:54,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:54,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:54,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880347272] [2021-03-11 14:38:54,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:54,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:54,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:54,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:54,384 INFO L87 Difference]: Start difference. First operand 383 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:54,501 INFO L93 Difference]: Finished difference Result 578 states and 1699 transitions. [2021-03-11 14:38:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:54,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:54,503 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:38:54,503 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:38:54,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 258.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:54,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:38:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 386. [2021-03-11 14:38:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.433766233766234) internal successors, (1322), 385 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1322 transitions. [2021-03-11 14:38:54,509 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1322 transitions. Word has length 22 [2021-03-11 14:38:54,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:54,509 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1322 transitions. [2021-03-11 14:38:54,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1322 transitions. [2021-03-11 14:38:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:54,509 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:54,509 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:54,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable962 [2021-03-11 14:38:54,509 INFO L428 AbstractCegarLoop]: === Iteration 964 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:54,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1624830881, now seen corresponding path program 958 times [2021-03-11 14:38:54,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:54,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658973998] [2021-03-11 14:38:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:54,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:54,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:54,523 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:54,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:54,539 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:54,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:54,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:54,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:54,596 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:54,654 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:54,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:54,696 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:54,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:54,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658973998] [2021-03-11 14:38:54,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:54,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:54,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952402950] [2021-03-11 14:38:54,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:54,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:54,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:54,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:54,737 INFO L87 Difference]: Start difference. First operand 386 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:54,847 INFO L93 Difference]: Finished difference Result 584 states and 1708 transitions. [2021-03-11 14:38:54,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:54,849 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:38:54,849 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:38:54,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 241.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:38:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 383. [2021-03-11 14:38:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43979057591623) internal successors, (1314), 382 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1314 transitions. [2021-03-11 14:38:54,855 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1314 transitions. Word has length 22 [2021-03-11 14:38:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:54,855 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1314 transitions. [2021-03-11 14:38:54,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1314 transitions. [2021-03-11 14:38:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:54,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:54,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:54,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable963 [2021-03-11 14:38:54,856 INFO L428 AbstractCegarLoop]: === Iteration 965 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:54,856 INFO L82 PathProgramCache]: Analyzing trace with hash 460947031, now seen corresponding path program 959 times [2021-03-11 14:38:54,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:54,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483447778] [2021-03-11 14:38:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:54,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:54,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:54,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:54,871 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:54,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:54,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:54,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:54,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:54,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:54,955 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:54,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:55,012 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:55,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:55,050 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:55,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:55,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483447778] [2021-03-11 14:38:55,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:55,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:55,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313470687] [2021-03-11 14:38:55,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:55,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:55,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:55,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:55,086 INFO L87 Difference]: Start difference. First operand 383 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:55,207 INFO L93 Difference]: Finished difference Result 584 states and 1710 transitions. [2021-03-11 14:38:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:55,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:55,209 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:38:55,209 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:38:55,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 267.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:38:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 388. [2021-03-11 14:38:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4186046511627906) internal successors, (1323), 387 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1323 transitions. [2021-03-11 14:38:55,215 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:55,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:55,215 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1323 transitions. [2021-03-11 14:38:55,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1323 transitions. [2021-03-11 14:38:55,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:55,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:55,216 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:55,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable964 [2021-03-11 14:38:55,216 INFO L428 AbstractCegarLoop]: === Iteration 966 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash -612138349, now seen corresponding path program 960 times [2021-03-11 14:38:55,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:55,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896635308] [2021-03-11 14:38:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:55,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:55,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:55,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:38:55,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:38:55,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:55,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:55,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:55,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:55,314 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:55,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:55,363 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:55,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:55,401 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:55,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:55,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896635308] [2021-03-11 14:38:55,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:55,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:55,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701576938] [2021-03-11 14:38:55,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:55,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:55,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:55,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:55,436 INFO L87 Difference]: Start difference. First operand 388 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:55,531 INFO L93 Difference]: Finished difference Result 580 states and 1699 transitions. [2021-03-11 14:38:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:55,532 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:55,533 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:38:55,533 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:38:55,533 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:38:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 376. [2021-03-11 14:38:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.469333333333333) internal successors, (1301), 375 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1301 transitions. [2021-03-11 14:38:55,539 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1301 transitions. Word has length 22 [2021-03-11 14:38:55,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:55,539 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1301 transitions. [2021-03-11 14:38:55,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,539 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1301 transitions. [2021-03-11 14:38:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:55,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:55,540 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:55,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable965 [2021-03-11 14:38:55,540 INFO L428 AbstractCegarLoop]: === Iteration 967 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:55,540 INFO L82 PathProgramCache]: Analyzing trace with hash 446576131, now seen corresponding path program 961 times [2021-03-11 14:38:55,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:55,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941851227] [2021-03-11 14:38:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:55,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:55,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:55,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:55,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:55,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:55,596 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:55,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:55,632 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:55,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:55,661 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:55,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:55,697 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:55,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:55,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941851227] [2021-03-11 14:38:55,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:55,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:55,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173371322] [2021-03-11 14:38:55,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:55,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:55,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:55,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:55,732 INFO L87 Difference]: Start difference. First operand 376 states and 1301 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:55,850 INFO L93 Difference]: Finished difference Result 605 states and 1790 transitions. [2021-03-11 14:38:55,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:55,852 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:55,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:55,852 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:38:55,852 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:38:55,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:55,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:38:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 385. [2021-03-11 14:38:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4713541666666665) internal successors, (1333), 384 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1333 transitions. [2021-03-11 14:38:55,859 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1333 transitions. Word has length 22 [2021-03-11 14:38:55,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:55,859 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1333 transitions. [2021-03-11 14:38:55,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:55,859 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1333 transitions. [2021-03-11 14:38:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:55,859 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:55,859 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:55,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable966 [2021-03-11 14:38:55,859 INFO L428 AbstractCegarLoop]: === Iteration 968 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:55,859 INFO L82 PathProgramCache]: Analyzing trace with hash 601068273, now seen corresponding path program 962 times [2021-03-11 14:38:55,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:55,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523478187] [2021-03-11 14:38:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:55,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:55,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:55,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:55,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:55,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:55,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:55,917 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:55,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:55,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:55,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:55,982 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:55,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:56,021 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:56,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:56,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523478187] [2021-03-11 14:38:56,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:56,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:56,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890554979] [2021-03-11 14:38:56,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:56,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:56,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:56,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:56,056 INFO L87 Difference]: Start difference. First operand 385 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:56,154 INFO L93 Difference]: Finished difference Result 603 states and 1785 transitions. [2021-03-11 14:38:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:56,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:56,157 INFO L225 Difference]: With dead ends: 603 [2021-03-11 14:38:56,157 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:38:56,157 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 210.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:38:56,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 384. [2021-03-11 14:38:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.475195822454308) internal successors, (1331), 383 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1331 transitions. [2021-03-11 14:38:56,163 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:56,163 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1331 transitions. [2021-03-11 14:38:56,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,163 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1331 transitions. [2021-03-11 14:38:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:56,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:56,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:56,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable967 [2021-03-11 14:38:56,163 INFO L428 AbstractCegarLoop]: === Iteration 969 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:56,164 INFO L82 PathProgramCache]: Analyzing trace with hash 952922397, now seen corresponding path program 963 times [2021-03-11 14:38:56,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:56,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974273336] [2021-03-11 14:38:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:56,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:56,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:56,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:56,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:56,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:56,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:56,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:56,254 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:56,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:56,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:56,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:56,325 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:56,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:56,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974273336] [2021-03-11 14:38:56,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:56,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:56,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116033288] [2021-03-11 14:38:56,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:56,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:56,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:56,355 INFO L87 Difference]: Start difference. First operand 384 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:56,462 INFO L93 Difference]: Finished difference Result 615 states and 1810 transitions. [2021-03-11 14:38:56,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:56,463 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:56,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:56,464 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:38:56,464 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:38:56,464 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:56,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:38:56,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 388. [2021-03-11 14:38:56,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4573643410852712) internal successors, (1338), 387 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1338 transitions. [2021-03-11 14:38:56,470 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1338 transitions. Word has length 22 [2021-03-11 14:38:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:56,470 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1338 transitions. [2021-03-11 14:38:56,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1338 transitions. [2021-03-11 14:38:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:56,471 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:56,471 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:56,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable968 [2021-03-11 14:38:56,471 INFO L428 AbstractCegarLoop]: === Iteration 970 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1026229809, now seen corresponding path program 964 times [2021-03-11 14:38:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316278469] [2021-03-11 14:38:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:56,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:56,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:56,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:56,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:56,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:56,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:56,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:56,580 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:56,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:56,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:56,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:56,675 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:56,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:56,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316278469] [2021-03-11 14:38:56,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:56,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:56,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273079496] [2021-03-11 14:38:56,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:56,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:56,713 INFO L87 Difference]: Start difference. First operand 388 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:56,816 INFO L93 Difference]: Finished difference Result 620 states and 1816 transitions. [2021-03-11 14:38:56,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:56,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:56,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:56,819 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:38:56,819 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:38:56,819 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:56,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:38:56,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 384. [2021-03-11 14:38:56,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 383 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1329 transitions. [2021-03-11 14:38:56,825 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1329 transitions. Word has length 22 [2021-03-11 14:38:56,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:56,825 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1329 transitions. [2021-03-11 14:38:56,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:56,825 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1329 transitions. [2021-03-11 14:38:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:56,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:56,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:56,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable969 [2021-03-11 14:38:56,826 INFO L428 AbstractCegarLoop]: === Iteration 971 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash -493023315, now seen corresponding path program 965 times [2021-03-11 14:38:56,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:56,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281863382] [2021-03-11 14:38:56,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:56,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:56,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:56,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:56,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:56,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:56,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:56,885 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:56,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:56,921 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:56,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:56,964 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:56,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:57,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:57,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:57,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281863382] [2021-03-11 14:38:57,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:57,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:57,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397865612] [2021-03-11 14:38:57,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:57,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:57,038 INFO L87 Difference]: Start difference. First operand 384 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:57,128 INFO L93 Difference]: Finished difference Result 609 states and 1794 transitions. [2021-03-11 14:38:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:57,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:57,130 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:38:57,130 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:38:57,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:38:57,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 386. [2021-03-11 14:38:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4597402597402596) internal successors, (1332), 385 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1332 transitions. [2021-03-11 14:38:57,136 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1332 transitions. Word has length 22 [2021-03-11 14:38:57,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:57,136 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1332 transitions. [2021-03-11 14:38:57,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,136 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1332 transitions. [2021-03-11 14:38:57,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:57,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:57,137 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:57,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable970 [2021-03-11 14:38:57,137 INFO L428 AbstractCegarLoop]: === Iteration 972 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:57,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:57,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1030878893, now seen corresponding path program 966 times [2021-03-11 14:38:57,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:57,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259653488] [2021-03-11 14:38:57,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:57,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:57,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:57,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:57,164 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:57,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:57,194 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:57,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:57,230 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:57,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:57,271 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:57,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:57,310 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:57,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:57,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259653488] [2021-03-11 14:38:57,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:57,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:57,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396819927] [2021-03-11 14:38:57,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:57,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:57,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:57,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:57,345 INFO L87 Difference]: Start difference. First operand 386 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:57,441 INFO L93 Difference]: Finished difference Result 616 states and 1806 transitions. [2021-03-11 14:38:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:57,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:57,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:57,443 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:38:57,443 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:38:57,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:38:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 382. [2021-03-11 14:38:57,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4750656167979) internal successors, (1324), 381 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1324 transitions. [2021-03-11 14:38:57,449 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1324 transitions. Word has length 22 [2021-03-11 14:38:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:57,449 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1324 transitions. [2021-03-11 14:38:57,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1324 transitions. [2021-03-11 14:38:57,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:57,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:57,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:57,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable971 [2021-03-11 14:38:57,450 INFO L428 AbstractCegarLoop]: === Iteration 973 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:57,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1911123165, now seen corresponding path program 967 times [2021-03-11 14:38:57,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:57,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232163707] [2021-03-11 14:38:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:57,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:57,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:57,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:57,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:57,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:57,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:57,539 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:57,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:57,565 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:57,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:57,596 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:57,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:57,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232163707] [2021-03-11 14:38:57,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:57,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:57,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707513340] [2021-03-11 14:38:57,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:57,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:57,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:57,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:57,627 INFO L87 Difference]: Start difference. First operand 382 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:57,739 INFO L93 Difference]: Finished difference Result 600 states and 1778 transitions. [2021-03-11 14:38:57,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:57,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:57,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:57,741 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:38:57,741 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:38:57,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 218.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:57,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:38:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 384. [2021-03-11 14:38:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4673629242819843) internal successors, (1328), 383 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1328 transitions. [2021-03-11 14:38:57,747 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1328 transitions. Word has length 22 [2021-03-11 14:38:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:57,747 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1328 transitions. [2021-03-11 14:38:57,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1328 transitions. [2021-03-11 14:38:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:57,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:57,748 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:57,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable972 [2021-03-11 14:38:57,748 INFO L428 AbstractCegarLoop]: === Iteration 974 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:57,748 INFO L82 PathProgramCache]: Analyzing trace with hash 2065615307, now seen corresponding path program 968 times [2021-03-11 14:38:57,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:57,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482907898] [2021-03-11 14:38:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:57,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:57,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:57,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:57,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:57,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:57,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:57,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:57,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:57,851 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:38:57,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:38:57,884 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:57,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:57,923 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:57,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:57,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482907898] [2021-03-11 14:38:57,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:57,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:57,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434835868] [2021-03-11 14:38:57,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:57,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:57,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:57,958 INFO L87 Difference]: Start difference. First operand 384 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:58,062 INFO L93 Difference]: Finished difference Result 598 states and 1773 transitions. [2021-03-11 14:38:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:58,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:58,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:58,065 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:38:58,065 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:38:58,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 226.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:38:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 383. [2021-03-11 14:38:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4712041884816753) internal successors, (1326), 382 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1326 transitions. [2021-03-11 14:38:58,071 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:58,071 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1326 transitions. [2021-03-11 14:38:58,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1326 transitions. [2021-03-11 14:38:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:58,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:58,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:58,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable973 [2021-03-11 14:38:58,072 INFO L428 AbstractCegarLoop]: === Iteration 975 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:58,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1289752543, now seen corresponding path program 969 times [2021-03-11 14:38:58,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:58,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404094768] [2021-03-11 14:38:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:58,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:58,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:58,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:58,102 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:58,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:58,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:58,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:58,182 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:58,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:58,241 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:58,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:58,283 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:58,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404094768] [2021-03-11 14:38:58,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:58,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:58,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316458989] [2021-03-11 14:38:58,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:58,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:58,324 INFO L87 Difference]: Start difference. First operand 383 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:58,463 INFO L93 Difference]: Finished difference Result 607 states and 1793 transitions. [2021-03-11 14:38:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:58,465 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:38:58,465 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:38:58,465 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 297.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:38:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 386. [2021-03-11 14:38:58,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4571428571428573) internal successors, (1331), 385 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1331 transitions. [2021-03-11 14:38:58,472 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1331 transitions. Word has length 22 [2021-03-11 14:38:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:58,472 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1331 transitions. [2021-03-11 14:38:58,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1331 transitions. [2021-03-11 14:38:58,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:58,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:58,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:58,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable974 [2021-03-11 14:38:58,472 INFO L428 AbstractCegarLoop]: === Iteration 976 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:58,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:58,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1953403531, now seen corresponding path program 970 times [2021-03-11 14:38:58,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:58,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946704634] [2021-03-11 14:38:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:58,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:58,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:58,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:58,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:58,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:58,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:58,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:58,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:58,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:58,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:58,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:58,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:58,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:58,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946704634] [2021-03-11 14:38:58,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:58,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:58,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376429566] [2021-03-11 14:38:58,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:58,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:58,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:58,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:58,703 INFO L87 Difference]: Start difference. First operand 386 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:58,831 INFO L93 Difference]: Finished difference Result 610 states and 1796 transitions. [2021-03-11 14:38:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:58,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:58,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:58,833 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:38:58,833 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:38:58,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 269.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:58,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:38:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 383. [2021-03-11 14:38:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.468586387434555) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1325 transitions. [2021-03-11 14:38:58,839 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1325 transitions. Word has length 22 [2021-03-11 14:38:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:58,840 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1325 transitions. [2021-03-11 14:38:58,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1325 transitions. [2021-03-11 14:38:58,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:58,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:58,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:58,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable975 [2021-03-11 14:38:58,840 INFO L428 AbstractCegarLoop]: === Iteration 977 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1559269041, now seen corresponding path program 971 times [2021-03-11 14:38:58,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:58,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391598723] [2021-03-11 14:38:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:58,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:58,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:58,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:58,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:58,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:58,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:58,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:58,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:58,929 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:58,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:58,966 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:38:58,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:38:58,999 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:59,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:59,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391598723] [2021-03-11 14:38:59,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:59,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:59,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549977319] [2021-03-11 14:38:59,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:59,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:59,030 INFO L87 Difference]: Start difference. First operand 383 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:59,142 INFO L93 Difference]: Finished difference Result 601 states and 1778 transitions. [2021-03-11 14:38:59,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:59,144 INFO L225 Difference]: With dead ends: 601 [2021-03-11 14:38:59,144 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:38:59,144 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:59,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:38:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 384. [2021-03-11 14:38:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.462140992167102) internal successors, (1326), 383 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1326 transitions. [2021-03-11 14:38:59,150 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1326 transitions. Word has length 22 [2021-03-11 14:38:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:59,150 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1326 transitions. [2021-03-11 14:38:59,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1326 transitions. [2021-03-11 14:38:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:59,151 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:59,151 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:59,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable976 [2021-03-11 14:38:59,151 INFO L428 AbstractCegarLoop]: === Iteration 978 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:59,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:59,151 INFO L82 PathProgramCache]: Analyzing trace with hash 486183661, now seen corresponding path program 972 times [2021-03-11 14:38:59,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:59,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174069113] [2021-03-11 14:38:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:59,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:59,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:59,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:59,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:59,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:59,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:38:59,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:38:59,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:38:59,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:38:59,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:59,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:59,334 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:59,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:59,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174069113] [2021-03-11 14:38:59,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:59,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:59,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855217888] [2021-03-11 14:38:59,371 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:59,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:59,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:59,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:59,371 INFO L87 Difference]: Start difference. First operand 384 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:59,508 INFO L93 Difference]: Finished difference Result 606 states and 1787 transitions. [2021-03-11 14:38:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:59,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:59,510 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:38:59,510 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:38:59,510 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:38:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 382. [2021-03-11 14:38:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 381 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1323 transitions. [2021-03-11 14:38:59,516 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1323 transitions. Word has length 22 [2021-03-11 14:38:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:59,516 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1323 transitions. [2021-03-11 14:38:59,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1323 transitions. [2021-03-11 14:38:59,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:59,517 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:59,517 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:59,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable977 [2021-03-11 14:38:59,517 INFO L428 AbstractCegarLoop]: === Iteration 979 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:59,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1522079815, now seen corresponding path program 973 times [2021-03-11 14:38:59,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:59,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134239721] [2021-03-11 14:38:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:59,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:59,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:59,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:59,544 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:59,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:59,575 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:59,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:59,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:59,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:38:59,667 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:38:59,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:38:59,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:38:59,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:38:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:38:59,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134239721] [2021-03-11 14:38:59,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:38:59,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:38:59,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942830297] [2021-03-11 14:38:59,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:38:59,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:38:59,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:38:59,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:38:59,741 INFO L87 Difference]: Start difference. First operand 382 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:38:59,872 INFO L93 Difference]: Finished difference Result 628 states and 1845 transitions. [2021-03-11 14:38:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:38:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:38:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:38:59,874 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:38:59,874 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:38:59,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:38:59,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:38:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 390. [2021-03-11 14:38:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.455012853470437) internal successors, (1344), 389 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1344 transitions. [2021-03-11 14:38:59,881 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1344 transitions. Word has length 22 [2021-03-11 14:38:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:38:59,884 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1344 transitions. [2021-03-11 14:38:59,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:38:59,884 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1344 transitions. [2021-03-11 14:38:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:38:59,884 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:38:59,884 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:38:59,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable978 [2021-03-11 14:38:59,884 INFO L428 AbstractCegarLoop]: === Iteration 980 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:38:59,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:38:59,884 INFO L82 PathProgramCache]: Analyzing trace with hash 470268593, now seen corresponding path program 974 times [2021-03-11 14:38:59,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:38:59,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325484682] [2021-03-11 14:38:59,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:38:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:38:59,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:38:59,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:38:59,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:38:59,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:38:59,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:38:59,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:38:59,942 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:38:59,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:38:59,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:38:59,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:00,033 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:00,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:00,072 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:00,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:00,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325484682] [2021-03-11 14:39:00,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:00,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:00,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961468579] [2021-03-11 14:39:00,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:00,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:00,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:00,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:00,110 INFO L87 Difference]: Start difference. First operand 390 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:00,233 INFO L93 Difference]: Finished difference Result 631 states and 1848 transitions. [2021-03-11 14:39:00,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:00,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:00,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:00,234 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:39:00,235 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:39:00,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 257.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:39:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 387. [2021-03-11 14:39:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.461139896373057) internal successors, (1336), 386 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1336 transitions. [2021-03-11 14:39:00,241 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1336 transitions. Word has length 22 [2021-03-11 14:39:00,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:00,241 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1336 transitions. [2021-03-11 14:39:00,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,241 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1336 transitions. [2021-03-11 14:39:00,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:00,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:00,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:00,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable979 [2021-03-11 14:39:00,242 INFO L428 AbstractCegarLoop]: === Iteration 981 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:00,242 INFO L82 PathProgramCache]: Analyzing trace with hash 934334493, now seen corresponding path program 975 times [2021-03-11 14:39:00,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:00,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649413082] [2021-03-11 14:39:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:00,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:00,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:00,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:00,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:00,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:00,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:00,326 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:00,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:00,366 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:00,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:00,409 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:00,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:00,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649413082] [2021-03-11 14:39:00,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:00,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:00,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15337248] [2021-03-11 14:39:00,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:00,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:00,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:00,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:00,450 INFO L87 Difference]: Start difference. First operand 387 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:00,587 INFO L93 Difference]: Finished difference Result 631 states and 1847 transitions. [2021-03-11 14:39:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:00,589 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:39:00,589 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:39:00,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 248.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:39:00,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 391. [2021-03-11 14:39:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.443589743589744) internal successors, (1343), 390 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1343 transitions. [2021-03-11 14:39:00,595 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1343 transitions. Word has length 22 [2021-03-11 14:39:00,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:00,595 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1343 transitions. [2021-03-11 14:39:00,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,595 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1343 transitions. [2021-03-11 14:39:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:00,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:00,596 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:00,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable980 [2021-03-11 14:39:00,596 INFO L428 AbstractCegarLoop]: === Iteration 982 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:00,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1007641905, now seen corresponding path program 976 times [2021-03-11 14:39:00,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:00,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842994190] [2021-03-11 14:39:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:00,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:00,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:00,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:00,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:00,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:00,655 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:00,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:00,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:00,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:00,745 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:00,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:00,784 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:00,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:00,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842994190] [2021-03-11 14:39:00,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:00,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:00,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945099673] [2021-03-11 14:39:00,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:00,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:00,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:00,822 INFO L87 Difference]: Start difference. First operand 391 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:00,947 INFO L93 Difference]: Finished difference Result 636 states and 1853 transitions. [2021-03-11 14:39:00,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:00,948 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:00,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:00,949 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:00,949 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:39:00,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 245.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:39:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 387. [2021-03-11 14:39:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4507772020725387) internal successors, (1332), 386 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1332 transitions. [2021-03-11 14:39:00,956 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1332 transitions. Word has length 22 [2021-03-11 14:39:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:00,956 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1332 transitions. [2021-03-11 14:39:00,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1332 transitions. [2021-03-11 14:39:00,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:00,956 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:00,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:00,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable981 [2021-03-11 14:39:00,957 INFO L428 AbstractCegarLoop]: === Iteration 983 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1552168931, now seen corresponding path program 977 times [2021-03-11 14:39:00,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:00,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063786698] [2021-03-11 14:39:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:00,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:00,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:00,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:00,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:00,985 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:00,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:01,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:01,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:01,059 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:01,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:01,091 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:01,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:01,130 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:01,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:01,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063786698] [2021-03-11 14:39:01,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:01,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997403841] [2021-03-11 14:39:01,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:01,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:01,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:01,167 INFO L87 Difference]: Start difference. First operand 387 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:01,308 INFO L93 Difference]: Finished difference Result 641 states and 1865 transitions. [2021-03-11 14:39:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:01,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:01,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:01,310 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:39:01,310 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:39:01,310 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:39:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 395. [2021-03-11 14:39:01,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.416243654822335) internal successors, (1346), 394 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1346 transitions. [2021-03-11 14:39:01,316 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1346 transitions. Word has length 22 [2021-03-11 14:39:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:01,317 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1346 transitions. [2021-03-11 14:39:01,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1346 transitions. [2021-03-11 14:39:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:01,317 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:01,317 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:01,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable982 [2021-03-11 14:39:01,317 INFO L428 AbstractCegarLoop]: === Iteration 984 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:01,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:01,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1533734905, now seen corresponding path program 978 times [2021-03-11 14:39:01,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:01,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016599800] [2021-03-11 14:39:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:01,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:01,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:01,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:01,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:01,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:01,376 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:01,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:01,417 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:01,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:01,450 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:01,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:01,489 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:01,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:01,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016599800] [2021-03-11 14:39:01,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:01,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:01,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654292204] [2021-03-11 14:39:01,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:01,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:01,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:01,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:01,525 INFO L87 Difference]: Start difference. First operand 395 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:01,646 INFO L93 Difference]: Finished difference Result 643 states and 1862 transitions. [2021-03-11 14:39:01,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:01,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:01,648 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:39:01,648 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:39:01,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 222.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:39:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 382. [2021-03-11 14:39:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:39:01,654 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:01,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:01,654 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:39:01,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:39:01,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:01,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:01,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:01,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable983 [2021-03-11 14:39:01,655 INFO L428 AbstractCegarLoop]: === Iteration 985 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash 2002168181, now seen corresponding path program 979 times [2021-03-11 14:39:01,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:01,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316484999] [2021-03-11 14:39:01,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:01,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:01,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:01,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:01,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:01,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:01,704 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:01,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:01,733 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:01,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:01,771 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:01,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:01,804 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:01,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:01,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316484999] [2021-03-11 14:39:01,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:01,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:01,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269213715] [2021-03-11 14:39:01,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:01,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:01,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:01,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:01,835 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:01,940 INFO L93 Difference]: Finished difference Result 614 states and 1804 transitions. [2021-03-11 14:39:01,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:01,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:01,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:01,942 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:39:01,942 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:39:01,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:39:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 386. [2021-03-11 14:39:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.451948051948052) internal successors, (1329), 385 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1329 transitions. [2021-03-11 14:39:01,948 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1329 transitions. Word has length 22 [2021-03-11 14:39:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:01,948 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1329 transitions. [2021-03-11 14:39:01,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:01,948 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1329 transitions. [2021-03-11 14:39:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:01,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:01,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:01,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable984 [2021-03-11 14:39:01,949 INFO L428 AbstractCegarLoop]: === Iteration 986 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:01,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:01,949 INFO L82 PathProgramCache]: Analyzing trace with hash 929082801, now seen corresponding path program 980 times [2021-03-11 14:39:01,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:01,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240213034] [2021-03-11 14:39:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:01,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:01,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:01,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:01,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:01,976 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:01,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:02,008 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:02,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:02,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:02,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:02,087 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:02,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:02,125 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:02,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:02,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240213034] [2021-03-11 14:39:02,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:02,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:02,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599303712] [2021-03-11 14:39:02,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:02,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:02,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:02,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:02,162 INFO L87 Difference]: Start difference. First operand 386 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:02,309 INFO L93 Difference]: Finished difference Result 619 states and 1813 transitions. [2021-03-11 14:39:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:02,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:02,311 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:39:02,311 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:39:02,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:39:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 385. [2021-03-11 14:39:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:39:02,318 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:39:02,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:02,318 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:39:02,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,318 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:39:02,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:02,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:02,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:02,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable985 [2021-03-11 14:39:02,318 INFO L428 AbstractCegarLoop]: === Iteration 987 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:02,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1414422859, now seen corresponding path program 981 times [2021-03-11 14:39:02,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:02,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114711927] [2021-03-11 14:39:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:02,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:02,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:02,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:02,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:02,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:02,378 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:02,414 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:02,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:02,457 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:02,496 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:02,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:02,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114711927] [2021-03-11 14:39:02,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:02,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:02,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146904382] [2021-03-11 14:39:02,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:02,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:02,532 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:02,652 INFO L93 Difference]: Finished difference Result 617 states and 1808 transitions. [2021-03-11 14:39:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:02,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:02,654 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:39:02,654 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:39:02,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:39:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 387. [2021-03-11 14:39:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4455958549222796) internal successors, (1330), 386 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1330 transitions. [2021-03-11 14:39:02,660 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1330 transitions. Word has length 22 [2021-03-11 14:39:02,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:02,660 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1330 transitions. [2021-03-11 14:39:02,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,661 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1330 transitions. [2021-03-11 14:39:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:02,661 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:02,661 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:02,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable986 [2021-03-11 14:39:02,661 INFO L428 AbstractCegarLoop]: === Iteration 988 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:02,661 INFO L82 PathProgramCache]: Analyzing trace with hash 876567281, now seen corresponding path program 982 times [2021-03-11 14:39:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:02,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901536952] [2021-03-11 14:39:02,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:02,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:02,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:02,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:02,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:02,689 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:02,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:02,721 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:02,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:02,755 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:02,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:02,799 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:02,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:02,838 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:02,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:02,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901536952] [2021-03-11 14:39:02,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:02,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:02,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110637610] [2021-03-11 14:39:02,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:02,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:02,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:02,874 INFO L87 Difference]: Start difference. First operand 387 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:02,984 INFO L93 Difference]: Finished difference Result 624 states and 1820 transitions. [2021-03-11 14:39:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:02,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:02,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:02,986 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:39:02,986 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:39:02,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 226.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:02,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:39:02,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 385. [2021-03-11 14:39:02,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4505208333333335) internal successors, (1325), 384 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1325 transitions. [2021-03-11 14:39:02,992 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:02,992 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1325 transitions. [2021-03-11 14:39:02,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1325 transitions. [2021-03-11 14:39:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:02,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:02,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:02,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable987 [2021-03-11 14:39:02,993 INFO L428 AbstractCegarLoop]: === Iteration 989 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1435429067, now seen corresponding path program 983 times [2021-03-11 14:39:02,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:02,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478147208] [2021-03-11 14:39:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:02,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:03,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:03,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:03,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:03,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:03,052 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:03,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:03,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:03,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:03,117 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:03,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:03,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:03,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:03,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478147208] [2021-03-11 14:39:03,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:03,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:03,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410120719] [2021-03-11 14:39:03,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:03,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:03,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:03,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:03,192 INFO L87 Difference]: Start difference. First operand 385 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:03,333 INFO L93 Difference]: Finished difference Result 633 states and 1842 transitions. [2021-03-11 14:39:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:03,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:03,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:03,335 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:39:03,335 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:39:03,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 239.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:39:03,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 393. [2021-03-11 14:39:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4158163265306123) internal successors, (1339), 392 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1339 transitions. [2021-03-11 14:39:03,341 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1339 transitions. Word has length 22 [2021-03-11 14:39:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:03,341 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1339 transitions. [2021-03-11 14:39:03,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1339 transitions. [2021-03-11 14:39:03,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:03,342 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:03,342 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:03,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable988 [2021-03-11 14:39:03,342 INFO L428 AbstractCegarLoop]: === Iteration 990 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:03,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1970658869, now seen corresponding path program 984 times [2021-03-11 14:39:03,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:03,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325872974] [2021-03-11 14:39:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:03,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:03,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:03,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:03,369 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:03,398 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:03,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:03,427 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:03,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:03,454 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:03,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:03,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:03,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:03,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325872974] [2021-03-11 14:39:03,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:03,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:03,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332705745] [2021-03-11 14:39:03,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:03,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:03,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:03,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:03,517 INFO L87 Difference]: Start difference. First operand 393 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:03,628 INFO L93 Difference]: Finished difference Result 635 states and 1839 transitions. [2021-03-11 14:39:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:03,630 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:39:03,630 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:39:03,630 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 192.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:39:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 379. [2021-03-11 14:39:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4708994708994707) internal successors, (1312), 378 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1312 transitions. [2021-03-11 14:39:03,636 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1312 transitions. Word has length 22 [2021-03-11 14:39:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:03,636 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1312 transitions. [2021-03-11 14:39:03,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1312 transitions. [2021-03-11 14:39:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:03,637 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:03,637 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:03,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable989 [2021-03-11 14:39:03,637 INFO L428 AbstractCegarLoop]: === Iteration 991 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:03,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1931665457, now seen corresponding path program 985 times [2021-03-11 14:39:03,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:03,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702363581] [2021-03-11 14:39:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:03,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:03,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:03,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:03,664 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:03,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:03,693 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:03,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:03,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:03,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:03,760 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:03,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:03,798 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:03,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:03,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702363581] [2021-03-11 14:39:03,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:03,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:03,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327268405] [2021-03-11 14:39:03,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:03,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:03,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:03,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:03,835 INFO L87 Difference]: Start difference. First operand 379 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:03,980 INFO L93 Difference]: Finished difference Result 595 states and 1763 transitions. [2021-03-11 14:39:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:03,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:03,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:03,982 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:39:03,982 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:39:03,982 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:39:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 384. [2021-03-11 14:39:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:39:03,988 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:39:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:03,988 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:39:03,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:39:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:03,988 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:03,988 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:03,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable990 [2021-03-11 14:39:03,988 INFO L428 AbstractCegarLoop]: === Iteration 992 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:03,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:03,989 INFO L82 PathProgramCache]: Analyzing trace with hash 2086157599, now seen corresponding path program 986 times [2021-03-11 14:39:03,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:03,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658765409] [2021-03-11 14:39:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:03,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:03,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:03,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:04,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:04,016 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:04,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:04,045 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:04,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:04,083 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:04,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:04,114 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:04,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:04,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:04,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:04,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658765409] [2021-03-11 14:39:04,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:04,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:04,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384696119] [2021-03-11 14:39:04,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:04,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:04,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:04,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:04,193 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:04,310 INFO L93 Difference]: Finished difference Result 593 states and 1758 transitions. [2021-03-11 14:39:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:04,312 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:39:04,312 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:39:04,312 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 217.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:39:04,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 383. [2021-03-11 14:39:04,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.468586387434555) internal successors, (1325), 382 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1325 transitions. [2021-03-11 14:39:04,318 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:04,318 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1325 transitions. [2021-03-11 14:39:04,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1325 transitions. [2021-03-11 14:39:04,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:04,319 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:04,319 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:04,319 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable991 [2021-03-11 14:39:04,319 INFO L428 AbstractCegarLoop]: === Iteration 993 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:04,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:04,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1856955573, now seen corresponding path program 987 times [2021-03-11 14:39:04,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:04,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657903447] [2021-03-11 14:39:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:04,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:04,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:04,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:04,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:04,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:04,375 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:04,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:04,413 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:04,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:04,463 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:04,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:04,502 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:04,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:04,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657903447] [2021-03-11 14:39:04,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:04,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:04,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622601800] [2021-03-11 14:39:04,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:04,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:04,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:04,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:04,540 INFO L87 Difference]: Start difference. First operand 383 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:04,683 INFO L93 Difference]: Finished difference Result 605 states and 1783 transitions. [2021-03-11 14:39:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:04,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:04,685 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:39:04,685 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:39:04,685 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 261.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:04,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:39:04,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 387. [2021-03-11 14:39:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4507772020725387) internal successors, (1332), 386 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1332 transitions. [2021-03-11 14:39:04,691 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1332 transitions. Word has length 22 [2021-03-11 14:39:04,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:04,691 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1332 transitions. [2021-03-11 14:39:04,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:04,692 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1332 transitions. [2021-03-11 14:39:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:04,692 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:04,692 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:04,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable992 [2021-03-11 14:39:04,692 INFO L428 AbstractCegarLoop]: === Iteration 994 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:04,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:04,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1783648161, now seen corresponding path program 988 times [2021-03-11 14:39:04,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:04,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568721025] [2021-03-11 14:39:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:04,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:04,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:04,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:04,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:04,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:04,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:04,749 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:04,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:04,786 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:04,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:04,834 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:04,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:04,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:04,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:04,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568721025] [2021-03-11 14:39:04,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:04,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:04,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422795548] [2021-03-11 14:39:04,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:04,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:04,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:04,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:04,917 INFO L87 Difference]: Start difference. First operand 387 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:05,043 INFO L93 Difference]: Finished difference Result 610 states and 1789 transitions. [2021-03-11 14:39:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:05,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:05,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:05,045 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:39:05,045 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:39:05,045 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 238.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:05,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:39:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 383. [2021-03-11 14:39:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4633507853403143) internal successors, (1323), 382 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1323 transitions. [2021-03-11 14:39:05,051 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1323 transitions. Word has length 22 [2021-03-11 14:39:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:05,051 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1323 transitions. [2021-03-11 14:39:05,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,051 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1323 transitions. [2021-03-11 14:39:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:05,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:05,052 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:05,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable993 [2021-03-11 14:39:05,052 INFO L428 AbstractCegarLoop]: === Iteration 995 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:05,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash 992066011, now seen corresponding path program 989 times [2021-03-11 14:39:05,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:05,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310228366] [2021-03-11 14:39:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:05,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:05,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:05,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:05,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:05,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:05,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:05,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:05,145 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:05,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:05,189 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:05,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:05,231 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:05,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:05,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310228366] [2021-03-11 14:39:05,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:05,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:05,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159571340] [2021-03-11 14:39:05,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:05,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:05,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:05,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:05,269 INFO L87 Difference]: Start difference. First operand 383 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:05,379 INFO L93 Difference]: Finished difference Result 599 states and 1767 transitions. [2021-03-11 14:39:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:05,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:05,381 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:39:05,381 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:39:05,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:39:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 385. [2021-03-11 14:39:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.453125) internal successors, (1326), 384 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1326 transitions. [2021-03-11 14:39:05,387 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1326 transitions. Word has length 22 [2021-03-11 14:39:05,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:05,388 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1326 transitions. [2021-03-11 14:39:05,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1326 transitions. [2021-03-11 14:39:05,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:05,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:05,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:05,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable994 [2021-03-11 14:39:05,388 INFO L428 AbstractCegarLoop]: === Iteration 996 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:05,388 INFO L82 PathProgramCache]: Analyzing trace with hash 454210433, now seen corresponding path program 990 times [2021-03-11 14:39:05,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:05,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440888721] [2021-03-11 14:39:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:05,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:05,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:05,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:05,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:05,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:05,445 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:05,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:05,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:05,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:05,526 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:05,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:05,565 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:05,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:05,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440888721] [2021-03-11 14:39:05,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:05,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:05,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814828692] [2021-03-11 14:39:05,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:05,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:05,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:05,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:05,602 INFO L87 Difference]: Start difference. First operand 385 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:05,716 INFO L93 Difference]: Finished difference Result 606 states and 1779 transitions. [2021-03-11 14:39:05,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:05,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:05,718 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:39:05,718 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:39:05,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 227.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:39:05,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 381. [2021-03-11 14:39:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.468421052631579) internal successors, (1318), 380 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1318 transitions. [2021-03-11 14:39:05,724 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:05,724 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1318 transitions. [2021-03-11 14:39:05,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1318 transitions. [2021-03-11 14:39:05,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:05,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:05,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:05,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable995 [2021-03-11 14:39:05,725 INFO L428 AbstractCegarLoop]: === Iteration 997 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:05,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:05,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1461308619, now seen corresponding path program 991 times [2021-03-11 14:39:05,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:05,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446216475] [2021-03-11 14:39:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:05,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:05,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:05,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:05,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:05,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:05,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:05,805 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:05,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:05,837 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:05,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:05,874 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:05,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:05,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446216475] [2021-03-11 14:39:05,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:05,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:05,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739850562] [2021-03-11 14:39:05,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:05,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:05,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:05,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:05,906 INFO L87 Difference]: Start difference. First operand 381 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:06,026 INFO L93 Difference]: Finished difference Result 587 states and 1745 transitions. [2021-03-11 14:39:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:06,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:06,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:06,027 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:39:06,027 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:39:06,027 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 212.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:39:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 383. [2021-03-11 14:39:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4607329842931938) internal successors, (1322), 382 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1322 transitions. [2021-03-11 14:39:06,033 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1322 transitions. Word has length 22 [2021-03-11 14:39:06,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:06,033 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1322 transitions. [2021-03-11 14:39:06,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,033 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1322 transitions. [2021-03-11 14:39:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:06,034 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:06,034 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:06,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable996 [2021-03-11 14:39:06,034 INFO L428 AbstractCegarLoop]: === Iteration 998 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:06,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:06,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1615800761, now seen corresponding path program 992 times [2021-03-11 14:39:06,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:06,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670769529] [2021-03-11 14:39:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:06,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:06,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:06,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:06,058 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:06,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:06,087 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:06,114 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:06,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:06,150 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:06,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:06,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:06,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670769529] [2021-03-11 14:39:06,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:06,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:06,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135673413] [2021-03-11 14:39:06,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:06,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:06,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:06,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:06,227 INFO L87 Difference]: Start difference. First operand 383 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:06,335 INFO L93 Difference]: Finished difference Result 585 states and 1740 transitions. [2021-03-11 14:39:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:06,336 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:06,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:06,337 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:39:06,337 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:39:06,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:39:06,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 382. [2021-03-11 14:39:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:39:06,343 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:06,343 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:39:06,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:39:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:06,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:06,343 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:06,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable997 [2021-03-11 14:39:06,344 INFO L428 AbstractCegarLoop]: === Iteration 999 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:06,344 INFO L82 PathProgramCache]: Analyzing trace with hash 873563297, now seen corresponding path program 993 times [2021-03-11 14:39:06,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:06,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527703205] [2021-03-11 14:39:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:06,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:06,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:06,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:06,373 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:06,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:06,402 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:06,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:06,427 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:06,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:06,457 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:06,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:06,496 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:06,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:06,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527703205] [2021-03-11 14:39:06,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:06,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:06,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284695924] [2021-03-11 14:39:06,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:06,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:06,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:06,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:06,533 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:06,665 INFO L93 Difference]: Finished difference Result 589 states and 1751 transitions. [2021-03-11 14:39:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:06,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:06,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:06,667 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:39:06,667 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:39:06,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 232.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:06,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:39:06,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 385. [2021-03-11 14:39:06,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4505208333333335) internal successors, (1325), 384 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1325 transitions. [2021-03-11 14:39:06,673 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:06,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:06,673 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1325 transitions. [2021-03-11 14:39:06,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:06,673 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1325 transitions. [2021-03-11 14:39:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:06,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:06,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:06,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable998 [2021-03-11 14:39:06,674 INFO L428 AbstractCegarLoop]: === Iteration 1000 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:06,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1180062215, now seen corresponding path program 994 times [2021-03-11 14:39:06,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:06,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263449548] [2021-03-11 14:39:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:06,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:06,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:06,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:06,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:06,701 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:06,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:06,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:06,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:06,755 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:06,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:06,786 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:06,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:06,825 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:06,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:06,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263449548] [2021-03-11 14:39:06,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:06,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:06,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37352845] [2021-03-11 14:39:06,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:06,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:06,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:06,862 INFO L87 Difference]: Start difference. First operand 385 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:07,010 INFO L93 Difference]: Finished difference Result 581 states and 1742 transitions. [2021-03-11 14:39:07,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:07,011 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:07,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:07,012 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:39:07,012 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:39:07,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 228.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:39:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 382. [2021-03-11 14:39:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.461942257217848) internal successors, (1319), 381 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1319 transitions. [2021-03-11 14:39:07,018 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1319 transitions. Word has length 22 [2021-03-11 14:39:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:07,018 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1319 transitions. [2021-03-11 14:39:07,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1319 transitions. [2021-03-11 14:39:07,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:07,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:07,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:07,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable999 [2021-03-11 14:39:07,019 INFO L428 AbstractCegarLoop]: === Iteration 1001 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:07,019 INFO L82 PathProgramCache]: Analyzing trace with hash -572382415, now seen corresponding path program 995 times [2021-03-11 14:39:07,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:07,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974809923] [2021-03-11 14:39:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:07,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:07,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:07,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:07,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:07,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:07,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:07,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:07,086 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:07,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:07,131 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:07,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:07,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:07,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:07,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974809923] [2021-03-11 14:39:07,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:07,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:07,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244178910] [2021-03-11 14:39:07,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:07,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:07,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:07,197 INFO L87 Difference]: Start difference. First operand 382 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:07,327 INFO L93 Difference]: Finished difference Result 585 states and 1740 transitions. [2021-03-11 14:39:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:07,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:07,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:07,329 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:39:07,329 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:39:07,329 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 194.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:39:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 383. [2021-03-11 14:39:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:39:07,335 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:07,335 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:39:07,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:39:07,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:07,336 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:07,336 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:07,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1000 [2021-03-11 14:39:07,336 INFO L428 AbstractCegarLoop]: === Iteration 1002 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:07,336 INFO L82 PathProgramCache]: Analyzing trace with hash -37152613, now seen corresponding path program 996 times [2021-03-11 14:39:07,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:07,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839013241] [2021-03-11 14:39:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:07,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:07,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:07,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:07,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:07,392 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:07,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:07,417 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:07,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:07,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:07,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:07,508 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:07,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:07,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839013241] [2021-03-11 14:39:07,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:07,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:07,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768985822] [2021-03-11 14:39:07,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:07,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:07,545 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:07,694 INFO L93 Difference]: Finished difference Result 579 states and 1737 transitions. [2021-03-11 14:39:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:07,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:07,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:07,696 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:39:07,696 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:39:07,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 251.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:39:07,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 381. [2021-03-11 14:39:07,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4657894736842105) internal successors, (1317), 380 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1317 transitions. [2021-03-11 14:39:07,702 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1317 transitions. Word has length 22 [2021-03-11 14:39:07,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:07,702 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1317 transitions. [2021-03-11 14:39:07,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1317 transitions. [2021-03-11 14:39:07,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:07,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:07,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:07,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1001 [2021-03-11 14:39:07,703 INFO L428 AbstractCegarLoop]: === Iteration 1003 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash -609571641, now seen corresponding path program 997 times [2021-03-11 14:39:07,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:07,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798847546] [2021-03-11 14:39:07,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:07,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:07,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:07,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:07,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:07,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:07,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:07,770 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:07,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:07,811 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:07,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:07,842 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:07,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:07,881 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:07,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:07,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798847546] [2021-03-11 14:39:07,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:07,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:07,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720692955] [2021-03-11 14:39:07,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:07,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:07,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:07,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:07,918 INFO L87 Difference]: Start difference. First operand 381 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:08,048 INFO L93 Difference]: Finished difference Result 610 states and 1801 transitions. [2021-03-11 14:39:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:08,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:08,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:08,050 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:39:08,050 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:39:08,050 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:39:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 388. [2021-03-11 14:39:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.452196382428941) internal successors, (1336), 387 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1336 transitions. [2021-03-11 14:39:08,056 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1336 transitions. Word has length 22 [2021-03-11 14:39:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:08,056 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1336 transitions. [2021-03-11 14:39:08,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1336 transitions. [2021-03-11 14:39:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:08,057 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:08,057 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:08,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1002 [2021-03-11 14:39:08,057 INFO L428 AbstractCegarLoop]: === Iteration 1004 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:08,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1631770143, now seen corresponding path program 998 times [2021-03-11 14:39:08,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:08,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815811318] [2021-03-11 14:39:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:08,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:08,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:08,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:08,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:08,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:08,115 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:08,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:08,155 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:08,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:08,186 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:08,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:08,224 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:08,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:08,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815811318] [2021-03-11 14:39:08,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:08,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:08,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416914179] [2021-03-11 14:39:08,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:08,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:08,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:08,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:08,262 INFO L87 Difference]: Start difference. First operand 388 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:08,403 INFO L93 Difference]: Finished difference Result 611 states and 1800 transitions. [2021-03-11 14:39:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:08,405 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:39:08,405 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:39:08,405 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 246.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:39:08,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 385. [2021-03-11 14:39:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4583333333333335) internal successors, (1328), 384 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1328 transitions. [2021-03-11 14:39:08,411 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1328 transitions. Word has length 22 [2021-03-11 14:39:08,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:08,412 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1328 transitions. [2021-03-11 14:39:08,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,412 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1328 transitions. [2021-03-11 14:39:08,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:08,412 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:08,412 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:08,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1003 [2021-03-11 14:39:08,412 INFO L428 AbstractCegarLoop]: === Iteration 1005 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:08,412 INFO L82 PathProgramCache]: Analyzing trace with hash 484519947, now seen corresponding path program 999 times [2021-03-11 14:39:08,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:08,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461715459] [2021-03-11 14:39:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:08,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:08,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:08,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:08,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:08,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:08,468 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:08,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:08,501 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:08,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:08,542 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:08,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:08,574 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:08,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:08,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461715459] [2021-03-11 14:39:08,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:08,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:08,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537512789] [2021-03-11 14:39:08,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:08,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:08,605 INFO L87 Difference]: Start difference. First operand 385 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:08,738 INFO L93 Difference]: Finished difference Result 611 states and 1797 transitions. [2021-03-11 14:39:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:08,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:08,740 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:39:08,740 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:39:08,740 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 240.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:08,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:39:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 389. [2021-03-11 14:39:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4407216494845363) internal successors, (1335), 388 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1335 transitions. [2021-03-11 14:39:08,747 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1335 transitions. Word has length 22 [2021-03-11 14:39:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:08,747 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1335 transitions. [2021-03-11 14:39:08,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:08,747 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1335 transitions. [2021-03-11 14:39:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:08,747 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:08,747 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:08,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1004 [2021-03-11 14:39:08,747 INFO L428 AbstractCegarLoop]: === Iteration 1006 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:08,748 INFO L82 PathProgramCache]: Analyzing trace with hash 557827359, now seen corresponding path program 1000 times [2021-03-11 14:39:08,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:08,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715370811] [2021-03-11 14:39:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:08,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:08,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:08,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:08,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:08,778 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:08,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:08,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:08,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:08,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:08,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:08,902 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:08,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:08,946 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:08,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:08,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715370811] [2021-03-11 14:39:08,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:08,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:08,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295264627] [2021-03-11 14:39:08,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:08,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:08,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:08,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:08,987 INFO L87 Difference]: Start difference. First operand 389 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:09,102 INFO L93 Difference]: Finished difference Result 616 states and 1803 transitions. [2021-03-11 14:39:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:09,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:09,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:09,104 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:39:09,104 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:39:09,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:39:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 385. [2021-03-11 14:39:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4479166666666665) internal successors, (1324), 384 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1324 transitions. [2021-03-11 14:39:09,110 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1324 transitions. Word has length 22 [2021-03-11 14:39:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:09,111 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1324 transitions. [2021-03-11 14:39:09,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1324 transitions. [2021-03-11 14:39:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:09,111 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:09,111 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:09,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1005 [2021-03-11 14:39:09,111 INFO L428 AbstractCegarLoop]: === Iteration 1007 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash -390667381, now seen corresponding path program 1001 times [2021-03-11 14:39:09,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:09,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600091567] [2021-03-11 14:39:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:09,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:09,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:09,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:09,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:09,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:09,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:09,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:09,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:09,270 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:09,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:09,310 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:09,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:09,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:09,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600091567] [2021-03-11 14:39:09,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:09,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:09,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044933843] [2021-03-11 14:39:09,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:09,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:09,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:09,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:09,348 INFO L87 Difference]: Start difference. First operand 385 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:09,493 INFO L93 Difference]: Finished difference Result 614 states and 1800 transitions. [2021-03-11 14:39:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:09,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:09,495 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:39:09,495 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:39:09,495 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:39:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 390. [2021-03-11 14:39:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4267352185089974) internal successors, (1333), 389 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1333 transitions. [2021-03-11 14:39:09,501 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1333 transitions. Word has length 22 [2021-03-11 14:39:09,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:09,502 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1333 transitions. [2021-03-11 14:39:09,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1333 transitions. [2021-03-11 14:39:09,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:09,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:09,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:09,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1006 [2021-03-11 14:39:09,502 INFO L428 AbstractCegarLoop]: === Iteration 1008 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:09,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1319945927, now seen corresponding path program 1002 times [2021-03-11 14:39:09,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:09,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474246356] [2021-03-11 14:39:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:09,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:09,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:09,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:09,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:09,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:09,562 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:09,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:09,606 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:09,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:09,659 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:09,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:09,699 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:09,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:09,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474246356] [2021-03-11 14:39:09,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:09,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:09,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521888769] [2021-03-11 14:39:09,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:09,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:09,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:09,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:09,738 INFO L87 Difference]: Start difference. First operand 390 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:09,848 INFO L93 Difference]: Finished difference Result 610 states and 1789 transitions. [2021-03-11 14:39:09,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:09,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:09,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:09,850 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:39:09,850 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:39:09,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 251.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:39:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 381. [2021-03-11 14:39:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.460526315789474) internal successors, (1315), 380 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1315 transitions. [2021-03-11 14:39:09,856 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:09,856 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1315 transitions. [2021-03-11 14:39:09,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1315 transitions. [2021-03-11 14:39:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:09,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:09,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:09,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1007 [2021-03-11 14:39:09,857 INFO L428 AbstractCegarLoop]: === Iteration 1009 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:09,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:09,857 INFO L82 PathProgramCache]: Analyzing trace with hash -129483275, now seen corresponding path program 1003 times [2021-03-11 14:39:09,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:09,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557442766] [2021-03-11 14:39:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:09,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:09,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:09,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:09,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:09,885 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:09,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:09,916 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:09,960 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:09,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:10,015 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:10,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:10,058 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:10,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:10,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:10,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557442766] [2021-03-11 14:39:10,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:10,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:10,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058953109] [2021-03-11 14:39:10,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:10,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:10,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:10,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:10,090 INFO L87 Difference]: Start difference. First operand 381 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:10,190 INFO L93 Difference]: Finished difference Result 596 states and 1761 transitions. [2021-03-11 14:39:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:10,191 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:39:10,191 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:39:10,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:39:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 384. [2021-03-11 14:39:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:39:10,197 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:39:10,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:10,197 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:39:10,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,197 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:39:10,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:10,198 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:10,198 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:10,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1008 [2021-03-11 14:39:10,198 INFO L428 AbstractCegarLoop]: === Iteration 1010 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:10,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:10,198 INFO L82 PathProgramCache]: Analyzing trace with hash 405746527, now seen corresponding path program 1004 times [2021-03-11 14:39:10,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:10,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043340081] [2021-03-11 14:39:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:10,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:10,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:10,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:10,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:10,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:10,256 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:10,306 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:10,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:10,370 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:10,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:10,413 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:10,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:10,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043340081] [2021-03-11 14:39:10,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:10,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:10,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602350952] [2021-03-11 14:39:10,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:10,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:10,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:10,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:10,451 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:10,593 INFO L93 Difference]: Finished difference Result 599 states and 1766 transitions. [2021-03-11 14:39:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:10,595 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:39:10,595 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:39:10,595 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 294.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:39:10,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 383. [2021-03-11 14:39:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:39:10,601 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:10,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:10,601 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:39:10,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,601 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:39:10,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:10,602 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:10,602 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:10,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1009 [2021-03-11 14:39:10,602 INFO L428 AbstractCegarLoop]: === Iteration 1011 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:10,602 INFO L82 PathProgramCache]: Analyzing trace with hash 964608313, now seen corresponding path program 1005 times [2021-03-11 14:39:10,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:10,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192072224] [2021-03-11 14:39:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:10,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:10,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:10,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:10,630 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:10,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:10,660 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:10,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:10,709 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:10,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:10,758 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:10,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:10,805 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:10,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:10,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192072224] [2021-03-11 14:39:10,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:10,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:10,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118593113] [2021-03-11 14:39:10,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:10,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:10,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:10,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:10,844 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:10,959 INFO L93 Difference]: Finished difference Result 599 states and 1765 transitions. [2021-03-11 14:39:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:10,961 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:39:10,961 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:39:10,961 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 256.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:39:10,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 385. [2021-03-11 14:39:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4453125) internal successors, (1323), 384 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1323 transitions. [2021-03-11 14:39:10,967 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1323 transitions. Word has length 22 [2021-03-11 14:39:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:10,967 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1323 transitions. [2021-03-11 14:39:10,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1323 transitions. [2021-03-11 14:39:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:10,968 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:10,968 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:10,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1010 [2021-03-11 14:39:10,968 INFO L428 AbstractCegarLoop]: === Iteration 1012 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:10,968 INFO L82 PathProgramCache]: Analyzing trace with hash 426752735, now seen corresponding path program 1006 times [2021-03-11 14:39:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:10,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556695482] [2021-03-11 14:39:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:10,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:10,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:10,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:10,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:10,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:11,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:11,073 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:11,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:11,119 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:11,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:11,160 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:11,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:11,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556695482] [2021-03-11 14:39:11,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:11,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:11,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649866317] [2021-03-11 14:39:11,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:11,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:11,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:11,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:11,198 INFO L87 Difference]: Start difference. First operand 385 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:11,317 INFO L93 Difference]: Finished difference Result 606 states and 1777 transitions. [2021-03-11 14:39:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:11,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:11,319 INFO L225 Difference]: With dead ends: 606 [2021-03-11 14:39:11,319 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:39:11,319 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 242.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:11,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:39:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 383. [2021-03-11 14:39:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.450261780104712) internal successors, (1318), 382 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1318 transitions. [2021-03-11 14:39:11,325 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:11,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:11,325 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1318 transitions. [2021-03-11 14:39:11,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1318 transitions. [2021-03-11 14:39:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:11,326 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:11,326 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:11,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1011 [2021-03-11 14:39:11,326 INFO L428 AbstractCegarLoop]: === Iteration 1013 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:11,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:11,326 INFO L82 PathProgramCache]: Analyzing trace with hash 912092793, now seen corresponding path program 1007 times [2021-03-11 14:39:11,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:11,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95806490] [2021-03-11 14:39:11,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:11,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:11,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:11,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:11,355 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:11,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:11,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:11,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:11,430 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:11,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:11,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:11,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:11,523 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:11,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:11,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95806490] [2021-03-11 14:39:11,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:11,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:11,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197094646] [2021-03-11 14:39:11,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:11,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:11,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:11,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:11,562 INFO L87 Difference]: Start difference. First operand 383 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:11,694 INFO L93 Difference]: Finished difference Result 608 states and 1784 transitions. [2021-03-11 14:39:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:11,696 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:39:11,696 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:39:11,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:39:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 388. [2021-03-11 14:39:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4289405684754524) internal successors, (1327), 387 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1327 transitions. [2021-03-11 14:39:11,702 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1327 transitions. Word has length 22 [2021-03-11 14:39:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:11,702 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1327 transitions. [2021-03-11 14:39:11,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1327 transitions. [2021-03-11 14:39:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:11,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:11,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:11,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1012 [2021-03-11 14:39:11,703 INFO L428 AbstractCegarLoop]: === Iteration 1014 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:11,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:11,703 INFO L82 PathProgramCache]: Analyzing trace with hash -160992587, now seen corresponding path program 1008 times [2021-03-11 14:39:11,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:11,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257880636] [2021-03-11 14:39:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:11,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:11,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:11,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:11,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:11,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:11,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:11,763 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:11,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:11,811 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:11,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:11,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:11,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:11,906 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:11,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:11,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257880636] [2021-03-11 14:39:11,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:11,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:11,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330191948] [2021-03-11 14:39:11,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:11,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:11,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:11,945 INFO L87 Difference]: Start difference. First operand 388 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:12,087 INFO L93 Difference]: Finished difference Result 604 states and 1773 transitions. [2021-03-11 14:39:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:12,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:12,089 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:39:12,089 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:39:12,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 256.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:12,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:39:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 379. [2021-03-11 14:39:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4656084656084656) internal successors, (1310), 378 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1310 transitions. [2021-03-11 14:39:12,095 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1310 transitions. Word has length 22 [2021-03-11 14:39:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:12,095 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1310 transitions. [2021-03-11 14:39:12,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,095 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1310 transitions. [2021-03-11 14:39:12,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:12,096 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:12,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:12,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1013 [2021-03-11 14:39:12,096 INFO L428 AbstractCegarLoop]: === Iteration 1015 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:12,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:12,096 INFO L82 PathProgramCache]: Analyzing trace with hash 214963075, now seen corresponding path program 1009 times [2021-03-11 14:39:12,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:12,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210311208] [2021-03-11 14:39:12,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:12,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:12,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:12,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:12,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:12,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:12,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:12,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:12,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:12,197 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:12,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:12,230 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:12,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:12,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210311208] [2021-03-11 14:39:12,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:12,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:12,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041476447] [2021-03-11 14:39:12,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:12,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:12,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:12,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:12,262 INFO L87 Difference]: Start difference. First operand 379 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:12,400 INFO L93 Difference]: Finished difference Result 582 states and 1732 transitions. [2021-03-11 14:39:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:12,403 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:39:12,403 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:39:12,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 219.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:39:12,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 382. [2021-03-11 14:39:12,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.459317585301837) internal successors, (1318), 381 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1318 transitions. [2021-03-11 14:39:12,409 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:12,409 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1318 transitions. [2021-03-11 14:39:12,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,409 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1318 transitions. [2021-03-11 14:39:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:12,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:12,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:12,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1014 [2021-03-11 14:39:12,410 INFO L428 AbstractCegarLoop]: === Iteration 1016 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash 369455217, now seen corresponding path program 1010 times [2021-03-11 14:39:12,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:12,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453230745] [2021-03-11 14:39:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:12,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:12,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:12,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:12,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:12,462 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:12,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:12,508 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:12,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:12,540 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:12,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:12,583 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:12,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:12,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453230745] [2021-03-11 14:39:12,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:12,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:12,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648064779] [2021-03-11 14:39:12,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:12,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:12,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:12,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:12,621 INFO L87 Difference]: Start difference. First operand 382 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:12,743 INFO L93 Difference]: Finished difference Result 580 states and 1727 transitions. [2021-03-11 14:39:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:12,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:12,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:12,745 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:39:12,745 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:39:12,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:12,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:39:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 381. [2021-03-11 14:39:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.463157894736842) internal successors, (1316), 380 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1316 transitions. [2021-03-11 14:39:12,751 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1316 transitions. Word has length 22 [2021-03-11 14:39:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:12,751 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1316 transitions. [2021-03-11 14:39:12,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1316 transitions. [2021-03-11 14:39:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:12,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:12,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:12,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1015 [2021-03-11 14:39:12,752 INFO L428 AbstractCegarLoop]: === Iteration 1017 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:12,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1309054663, now seen corresponding path program 1011 times [2021-03-11 14:39:12,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:12,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225365896] [2021-03-11 14:39:12,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:12,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:12,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:12,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:12,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:12,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:12,798 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:12,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:12,841 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:12,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:12,895 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:12,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:12,937 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:12,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:12,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:12,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225365896] [2021-03-11 14:39:12,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:12,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:12,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116090513] [2021-03-11 14:39:12,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:12,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:12,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:12,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:12,976 INFO L87 Difference]: Start difference. First operand 381 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:13,137 INFO L93 Difference]: Finished difference Result 589 states and 1747 transitions. [2021-03-11 14:39:13,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:13,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:13,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:13,139 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:39:13,139 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:39:13,140 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 267.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:39:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 384. [2021-03-11 14:39:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:39:13,145 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:39:13,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:13,146 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:39:13,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,146 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:39:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:13,146 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:13,146 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:13,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1016 [2021-03-11 14:39:13,146 INFO L428 AbstractCegarLoop]: === Iteration 1018 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash 257243441, now seen corresponding path program 1012 times [2021-03-11 14:39:13,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:13,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222251183] [2021-03-11 14:39:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:13,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:13,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:13,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:13,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:13,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:13,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:13,236 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:13,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:13,290 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:13,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:13,331 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:13,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:13,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:13,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222251183] [2021-03-11 14:39:13,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:13,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:13,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525719720] [2021-03-11 14:39:13,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:13,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:13,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:13,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:13,370 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:13,513 INFO L93 Difference]: Finished difference Result 592 states and 1750 transitions. [2021-03-11 14:39:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:13,515 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:39:13,515 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:39:13,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 266.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:39:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 381. [2021-03-11 14:39:13,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.460526315789474) internal successors, (1315), 380 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1315 transitions. [2021-03-11 14:39:13,521 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:13,521 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1315 transitions. [2021-03-11 14:39:13,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1315 transitions. [2021-03-11 14:39:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:13,522 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:13,522 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:13,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1017 [2021-03-11 14:39:13,522 INFO L428 AbstractCegarLoop]: === Iteration 1019 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:13,522 INFO L82 PathProgramCache]: Analyzing trace with hash -136891049, now seen corresponding path program 1013 times [2021-03-11 14:39:13,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:13,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139728559] [2021-03-11 14:39:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:13,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:13,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:13,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:13,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:13,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:13,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:13,616 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:13,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:13,663 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:13,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:13,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:13,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:13,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139728559] [2021-03-11 14:39:13,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:13,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:13,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188569645] [2021-03-11 14:39:13,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:13,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:13,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:13,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:13,743 INFO L87 Difference]: Start difference. First operand 381 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:13,882 INFO L93 Difference]: Finished difference Result 583 states and 1732 transitions. [2021-03-11 14:39:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:13,884 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:39:13,884 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:39:13,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:39:13,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 382. [2021-03-11 14:39:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:39:13,890 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:39:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:13,890 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:39:13,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:39:13,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:13,891 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:13,891 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:13,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1018 [2021-03-11 14:39:13,891 INFO L428 AbstractCegarLoop]: === Iteration 1020 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:13,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1209976429, now seen corresponding path program 1014 times [2021-03-11 14:39:13,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:13,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445590340] [2021-03-11 14:39:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:13,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:13,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:13,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:13,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:13,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:13,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:13,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:13,981 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:13,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:14,028 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:14,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:14,069 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:14,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:14,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445590340] [2021-03-11 14:39:14,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:14,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:14,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108672697] [2021-03-11 14:39:14,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:14,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:14,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:14,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:14,108 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:14,231 INFO L93 Difference]: Finished difference Result 588 states and 1741 transitions. [2021-03-11 14:39:14,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:14,233 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:39:14,233 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:39:14,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 249.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:14,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:39:14,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 380. [2021-03-11 14:39:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4643799472295513) internal successors, (1313), 379 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1313 transitions. [2021-03-11 14:39:14,239 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1313 transitions. Word has length 22 [2021-03-11 14:39:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:14,239 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1313 transitions. [2021-03-11 14:39:14,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,239 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1313 transitions. [2021-03-11 14:39:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:14,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:14,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:14,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1019 [2021-03-11 14:39:14,239 INFO L428 AbstractCegarLoop]: === Iteration 1021 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:14,240 INFO L82 PathProgramCache]: Analyzing trace with hash -382373583, now seen corresponding path program 1015 times [2021-03-11 14:39:14,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:14,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423833957] [2021-03-11 14:39:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:14,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:14,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:14,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:14,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:14,278 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:14,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:14,298 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:14,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:14,325 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:14,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:14,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:14,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:14,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423833957] [2021-03-11 14:39:14,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:14,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:14,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157917438] [2021-03-11 14:39:14,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:14,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:14,400 INFO L87 Difference]: Start difference. First operand 380 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:14,536 INFO L93 Difference]: Finished difference Result 579 states and 1725 transitions. [2021-03-11 14:39:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:14,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:14,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:14,539 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:39:14,539 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:39:14,539 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 205.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:39:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 382. [2021-03-11 14:39:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.456692913385827) internal successors, (1317), 381 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1317 transitions. [2021-03-11 14:39:14,544 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1317 transitions. Word has length 22 [2021-03-11 14:39:14,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:14,545 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1317 transitions. [2021-03-11 14:39:14,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,545 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1317 transitions. [2021-03-11 14:39:14,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:14,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:14,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:14,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1020 [2021-03-11 14:39:14,545 INFO L428 AbstractCegarLoop]: === Iteration 1022 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:14,545 INFO L82 PathProgramCache]: Analyzing trace with hash -227881441, now seen corresponding path program 1016 times [2021-03-11 14:39:14,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:14,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295999986] [2021-03-11 14:39:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:14,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:14,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:14,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:14,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:14,593 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:14,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:14,618 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:14,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:14,651 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:14,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:14,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:14,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:14,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295999986] [2021-03-11 14:39:14,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:14,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:14,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130772863] [2021-03-11 14:39:14,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:14,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:14,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:14,733 INFO L87 Difference]: Start difference. First operand 382 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:14,866 INFO L93 Difference]: Finished difference Result 577 states and 1720 transitions. [2021-03-11 14:39:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:14,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:14,869 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:39:14,869 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:39:14,869 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 204.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:39:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 381. [2021-03-11 14:39:14,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.460526315789474) internal successors, (1315), 380 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1315 transitions. [2021-03-11 14:39:14,875 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:14,875 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1315 transitions. [2021-03-11 14:39:14,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1315 transitions. [2021-03-11 14:39:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:14,875 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:14,875 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:14,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1021 [2021-03-11 14:39:14,875 INFO L428 AbstractCegarLoop]: === Iteration 1023 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:14,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash -970118905, now seen corresponding path program 1017 times [2021-03-11 14:39:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301466862] [2021-03-11 14:39:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:14,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:14,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:14,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:14,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:14,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:14,924 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:14,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:14,951 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:14,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:14,983 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:14,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:15,024 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:15,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:15,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301466862] [2021-03-11 14:39:15,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:15,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:15,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703769761] [2021-03-11 14:39:15,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:15,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:15,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:15,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:15,064 INFO L87 Difference]: Start difference. First operand 381 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:15,202 INFO L93 Difference]: Finished difference Result 581 states and 1731 transitions. [2021-03-11 14:39:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:15,205 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:39:15,205 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:39:15,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 231.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:39:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 384. [2021-03-11 14:39:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.446475195822454) internal successors, (1320), 383 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1320 transitions. [2021-03-11 14:39:15,211 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:15,211 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1320 transitions. [2021-03-11 14:39:15,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1320 transitions. [2021-03-11 14:39:15,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:15,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:15,211 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:15,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1022 [2021-03-11 14:39:15,211 INFO L428 AbstractCegarLoop]: === Iteration 1024 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1271222879, now seen corresponding path program 1018 times [2021-03-11 14:39:15,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:15,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090688111] [2021-03-11 14:39:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:15,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:15,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:15,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:15,259 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:15,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:15,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:15,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:15,324 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:15,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:15,364 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:15,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:15,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090688111] [2021-03-11 14:39:15,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:15,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:15,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803841338] [2021-03-11 14:39:15,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:15,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:15,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:15,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:15,403 INFO L87 Difference]: Start difference. First operand 384 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:15,534 INFO L93 Difference]: Finished difference Result 573 states and 1722 transitions. [2021-03-11 14:39:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:15,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:15,536 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:39:15,536 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:39:15,536 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:15,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:39:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 381. [2021-03-11 14:39:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:39:15,542 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:39:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:15,542 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:39:15,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:39:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:15,542 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:15,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:15,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1023 [2021-03-11 14:39:15,543 INFO L428 AbstractCegarLoop]: === Iteration 1025 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:15,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:15,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1878902679, now seen corresponding path program 1019 times [2021-03-11 14:39:15,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:15,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453717565] [2021-03-11 14:39:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:15,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:15,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:15,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:15,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:15,583 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:15,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:15,605 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:15,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:15,655 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:15,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:15,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:15,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:15,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453717565] [2021-03-11 14:39:15,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:15,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:15,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573025824] [2021-03-11 14:39:15,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:15,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:15,748 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:15,880 INFO L93 Difference]: Finished difference Result 577 states and 1720 transitions. [2021-03-11 14:39:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:15,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:15,882 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:39:15,882 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:39:15,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:39:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 382. [2021-03-11 14:39:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:39:15,888 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:15,888 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:39:15,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:39:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:15,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:15,889 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:15,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1024 [2021-03-11 14:39:15,889 INFO L428 AbstractCegarLoop]: === Iteration 1026 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:15,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1880834815, now seen corresponding path program 1020 times [2021-03-11 14:39:15,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:15,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042899457] [2021-03-11 14:39:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:15,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:15,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:15,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:15,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:15,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:15,939 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:15,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:15,965 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:15,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:16,023 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:16,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:16,065 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:16,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:16,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042899457] [2021-03-11 14:39:16,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:16,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:16,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135281680] [2021-03-11 14:39:16,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:16,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:16,105 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:16,272 INFO L93 Difference]: Finished difference Result 571 states and 1717 transitions. [2021-03-11 14:39:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:16,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:16,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:16,275 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:39:16,275 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:39:16,275 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 260.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:39:16,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 380. [2021-03-11 14:39:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.461741424802111) internal successors, (1312), 379 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1312 transitions. [2021-03-11 14:39:16,281 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1312 transitions. Word has length 22 [2021-03-11 14:39:16,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:16,281 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1312 transitions. [2021-03-11 14:39:16,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1312 transitions. [2021-03-11 14:39:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:16,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:16,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:16,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1025 [2021-03-11 14:39:16,282 INFO L428 AbstractCegarLoop]: === Iteration 1027 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash 268818865, now seen corresponding path program 1021 times [2021-03-11 14:39:16,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:16,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061943684] [2021-03-11 14:39:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:16,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:16,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:16,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:16,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:16,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:16,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:16,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:16,412 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:16,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:16,454 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:16,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:16,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061943684] [2021-03-11 14:39:16,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:16,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:16,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885020273] [2021-03-11 14:39:16,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:16,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:16,491 INFO L87 Difference]: Start difference. First operand 380 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:16,653 INFO L93 Difference]: Finished difference Result 596 states and 1767 transitions. [2021-03-11 14:39:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:16,656 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:39:16,656 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:39:16,656 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 254.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:39:16,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 386. [2021-03-11 14:39:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.449350649350649) internal successors, (1328), 385 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1328 transitions. [2021-03-11 14:39:16,662 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1328 transitions. Word has length 22 [2021-03-11 14:39:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:16,662 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1328 transitions. [2021-03-11 14:39:16,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1328 transitions. [2021-03-11 14:39:16,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:16,662 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:16,662 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:16,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1026 [2021-03-11 14:39:16,663 INFO L428 AbstractCegarLoop]: === Iteration 1028 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:16,663 INFO L82 PathProgramCache]: Analyzing trace with hash -782992357, now seen corresponding path program 1022 times [2021-03-11 14:39:16,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:16,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640414550] [2021-03-11 14:39:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:16,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:16,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:16,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:16,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:16,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:16,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:16,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:16,736 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:16,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:16,794 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:16,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:16,836 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:16,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:16,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640414550] [2021-03-11 14:39:16,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:16,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:16,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133386122] [2021-03-11 14:39:16,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:16,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:16,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:16,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:16,876 INFO L87 Difference]: Start difference. First operand 386 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:17,030 INFO L93 Difference]: Finished difference Result 599 states and 1770 transitions. [2021-03-11 14:39:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:17,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:17,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:17,033 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:39:17,033 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:39:17,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:17,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:39:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 383. [2021-03-11 14:39:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:39:17,039 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:17,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:17,039 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:39:17,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:39:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:17,039 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:17,039 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:17,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1027 [2021-03-11 14:39:17,040 INFO L428 AbstractCegarLoop]: === Iteration 1029 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:17,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:17,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1413018045, now seen corresponding path program 1023 times [2021-03-11 14:39:17,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:17,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557101786] [2021-03-11 14:39:17,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:17,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:17,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:17,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:17,088 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:17,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:17,114 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:17,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:17,148 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:17,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:17,197 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:17,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:17,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557101786] [2021-03-11 14:39:17,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:17,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:17,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809104079] [2021-03-11 14:39:17,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:17,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:17,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:17,237 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:17,389 INFO L93 Difference]: Finished difference Result 591 states and 1755 transitions. [2021-03-11 14:39:17,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:17,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:17,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:17,391 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:39:17,392 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:39:17,392 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 242.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:17,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:39:17,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 386. [2021-03-11 14:39:17,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4415584415584415) internal successors, (1325), 385 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1325 transitions. [2021-03-11 14:39:17,398 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:17,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:17,398 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1325 transitions. [2021-03-11 14:39:17,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1325 transitions. [2021-03-11 14:39:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:17,398 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:17,398 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:17,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028 [2021-03-11 14:39:17,398 INFO L428 AbstractCegarLoop]: === Iteration 1030 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:17,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:17,399 INFO L82 PathProgramCache]: Analyzing trace with hash 828323739, now seen corresponding path program 1024 times [2021-03-11 14:39:17,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:17,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217577835] [2021-03-11 14:39:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:17,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:17,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:17,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:17,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:17,448 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:17,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:17,474 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:17,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:17,508 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:17,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:17,549 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:17,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:17,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217577835] [2021-03-11 14:39:17,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:17,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:17,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540563972] [2021-03-11 14:39:17,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:17,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:17,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:17,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:17,590 INFO L87 Difference]: Start difference. First operand 386 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:17,745 INFO L93 Difference]: Finished difference Result 583 states and 1746 transitions. [2021-03-11 14:39:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:17,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:17,747 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:39:17,747 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:39:17,747 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:39:17,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 383. [2021-03-11 14:39:17,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4476439790575917) internal successors, (1317), 382 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1317 transitions. [2021-03-11 14:39:17,753 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1317 transitions. Word has length 22 [2021-03-11 14:39:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:17,753 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1317 transitions. [2021-03-11 14:39:17,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:17,753 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1317 transitions. [2021-03-11 14:39:17,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:17,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:17,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:17,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1029 [2021-03-11 14:39:17,754 INFO L428 AbstractCegarLoop]: === Iteration 1031 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:17,754 INFO L82 PathProgramCache]: Analyzing trace with hash -20873789, now seen corresponding path program 1025 times [2021-03-11 14:39:17,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:17,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413057438] [2021-03-11 14:39:17,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:17,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:17,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:17,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:17,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:17,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:17,794 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:17,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:17,815 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:17,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:17,842 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:17,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:17,876 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:17,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:17,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413057438] [2021-03-11 14:39:17,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:17,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:17,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345424702] [2021-03-11 14:39:17,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:17,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:17,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:17,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:17,910 INFO L87 Difference]: Start difference. First operand 383 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:18,049 INFO L93 Difference]: Finished difference Result 595 states and 1761 transitions. [2021-03-11 14:39:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:18,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:18,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:18,052 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:39:18,052 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:39:18,052 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 206.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:39:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 387. [2021-03-11 14:39:18,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.430051813471503) internal successors, (1324), 386 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1324 transitions. [2021-03-11 14:39:18,058 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1324 transitions. Word has length 22 [2021-03-11 14:39:18,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:18,058 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1324 transitions. [2021-03-11 14:39:18,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,058 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1324 transitions. [2021-03-11 14:39:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:18,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:18,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:18,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1030 [2021-03-11 14:39:18,059 INFO L428 AbstractCegarLoop]: === Iteration 1032 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:18,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:18,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1713053071, now seen corresponding path program 1026 times [2021-03-11 14:39:18,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:18,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565659554] [2021-03-11 14:39:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:18,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:18,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:18,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:18,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:18,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:18,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:18,134 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:18,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:18,167 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:18,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:18,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:18,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:18,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565659554] [2021-03-11 14:39:18,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:18,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:18,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431455407] [2021-03-11 14:39:18,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:18,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:18,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:18,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:18,250 INFO L87 Difference]: Start difference. First operand 387 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:18,405 INFO L93 Difference]: Finished difference Result 584 states and 1745 transitions. [2021-03-11 14:39:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:18,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:18,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:18,407 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:39:18,407 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:39:18,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:18,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:39:18,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 380. [2021-03-11 14:39:18,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:39:18,413 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:39:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:18,413 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:39:18,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,413 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:39:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:18,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:18,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:18,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1031 [2021-03-11 14:39:18,414 INFO L428 AbstractCegarLoop]: === Iteration 1033 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 748907231, now seen corresponding path program 1027 times [2021-03-11 14:39:18,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:18,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967587844] [2021-03-11 14:39:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:18,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:18,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:18,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:18,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:18,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:18,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:18,509 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:18,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:18,558 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:18,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:18,604 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:18,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:18,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967587844] [2021-03-11 14:39:18,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:18,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:18,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196600923] [2021-03-11 14:39:18,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:18,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:18,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:18,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:18,645 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:18,778 INFO L93 Difference]: Finished difference Result 584 states and 1734 transitions. [2021-03-11 14:39:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:18,781 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:39:18,781 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:39:18,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 247.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:39:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 382. [2021-03-11 14:39:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:39:18,787 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:18,787 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:39:18,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:39:18,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:18,787 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:18,787 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:18,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1032 [2021-03-11 14:39:18,787 INFO L428 AbstractCegarLoop]: === Iteration 1034 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:18,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:18,788 INFO L82 PathProgramCache]: Analyzing trace with hash -324178149, now seen corresponding path program 1028 times [2021-03-11 14:39:18,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:18,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983234541] [2021-03-11 14:39:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:18,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:18,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:18,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:18,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:18,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:18,837 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:18,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:18,882 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:18,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:18,932 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:18,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:18,974 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:18,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:19,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983234541] [2021-03-11 14:39:19,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:19,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:19,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837181698] [2021-03-11 14:39:19,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:19,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:19,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:19,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:19,018 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:19,167 INFO L93 Difference]: Finished difference Result 589 states and 1743 transitions. [2021-03-11 14:39:19,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:19,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:19,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:19,169 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:39:19,169 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:39:19,170 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 273.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:19,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:39:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 381. [2021-03-11 14:39:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.455263157894737) internal successors, (1313), 380 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1313 transitions. [2021-03-11 14:39:19,175 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1313 transitions. Word has length 22 [2021-03-11 14:39:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:19,175 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1313 transitions. [2021-03-11 14:39:19,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1313 transitions. [2021-03-11 14:39:19,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:19,176 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:19,176 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:19,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1033 [2021-03-11 14:39:19,176 INFO L428 AbstractCegarLoop]: === Iteration 1035 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash -932929679, now seen corresponding path program 1029 times [2021-03-11 14:39:19,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:19,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739366424] [2021-03-11 14:39:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:19,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:19,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:19,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:19,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:19,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:19,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:19,268 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:19,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:19,326 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:19,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:19,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:19,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:19,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739366424] [2021-03-11 14:39:19,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:19,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:19,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115669849] [2021-03-11 14:39:19,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:19,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:19,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:19,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:19,408 INFO L87 Difference]: Start difference. First operand 381 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:19,510 INFO L93 Difference]: Finished difference Result 581 states and 1728 transitions. [2021-03-11 14:39:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:19,512 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:39:19,512 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:39:19,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 241.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:19,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:39:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 382. [2021-03-11 14:39:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:39:19,518 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:39:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:19,518 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:39:19,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:39:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:19,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:19,519 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:19,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1034 [2021-03-11 14:39:19,519 INFO L428 AbstractCegarLoop]: === Iteration 1036 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:19,519 INFO L82 PathProgramCache]: Analyzing trace with hash -397699877, now seen corresponding path program 1030 times [2021-03-11 14:39:19,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:19,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389278869] [2021-03-11 14:39:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:19,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:19,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:19,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:19,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:19,562 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:19,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:19,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:19,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:19,662 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:19,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:19,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:19,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389278869] [2021-03-11 14:39:19,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:19,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:19,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106732401] [2021-03-11 14:39:19,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:19,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:19,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:19,748 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:19,921 INFO L93 Difference]: Finished difference Result 575 states and 1725 transitions. [2021-03-11 14:39:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:19,923 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:39:19,923 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:39:19,923 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:19,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:39:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 381. [2021-03-11 14:39:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:39:19,929 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:39:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:19,929 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:39:19,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:39:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:19,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:19,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:19,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1035 [2021-03-11 14:39:19,930 INFO L428 AbstractCegarLoop]: === Iteration 1037 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:19,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:19,930 INFO L82 PathProgramCache]: Analyzing trace with hash -911923471, now seen corresponding path program 1031 times [2021-03-11 14:39:19,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246513477] [2021-03-11 14:39:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:19,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:19,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:19,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:19,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:19,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:19,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:20,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:20,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:20,056 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:20,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:20,098 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:20,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:20,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246513477] [2021-03-11 14:39:20,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:20,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:20,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757732176] [2021-03-11 14:39:20,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:20,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:20,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:20,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:20,138 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:20,288 INFO L93 Difference]: Finished difference Result 589 states and 1746 transitions. [2021-03-11 14:39:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:20,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:20,290 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:39:20,290 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:39:20,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:20,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:39:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 385. [2021-03-11 14:39:20,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4348958333333335) internal successors, (1319), 384 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1319 transitions. [2021-03-11 14:39:20,297 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1319 transitions. Word has length 22 [2021-03-11 14:39:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:20,297 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1319 transitions. [2021-03-11 14:39:20,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1319 transitions. [2021-03-11 14:39:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:20,297 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:20,297 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:20,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1036 [2021-03-11 14:39:20,297 INFO L428 AbstractCegarLoop]: === Iteration 1038 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:20,298 INFO L82 PathProgramCache]: Analyzing trace with hash 696391711, now seen corresponding path program 1032 times [2021-03-11 14:39:20,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:20,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386386471] [2021-03-11 14:39:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:20,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:20,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:20,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:20,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:20,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:20,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:20,393 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:20,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:20,425 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:20,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:20,467 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:20,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:20,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386386471] [2021-03-11 14:39:20,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:20,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:20,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692957232] [2021-03-11 14:39:20,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:20,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:20,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:20,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:20,511 INFO L87 Difference]: Start difference. First operand 385 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:20,680 INFO L93 Difference]: Finished difference Result 578 states and 1730 transitions. [2021-03-11 14:39:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:20,682 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:39:20,682 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:39:20,682 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:20,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:39:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 379. [2021-03-11 14:39:20,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.462962962962963) internal successors, (1309), 378 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1309 transitions. [2021-03-11 14:39:20,688 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1309 transitions. Word has length 22 [2021-03-11 14:39:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:20,688 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1309 transitions. [2021-03-11 14:39:20,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1309 transitions. [2021-03-11 14:39:20,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:20,689 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:20,689 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:20,689 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1037 [2021-03-11 14:39:20,689 INFO L428 AbstractCegarLoop]: === Iteration 1039 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:20,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:20,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1536276043, now seen corresponding path program 1033 times [2021-03-11 14:39:20,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:20,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537820505] [2021-03-11 14:39:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:20,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:20,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:20,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:20,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:20,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:20,738 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:20,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:20,763 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:20,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:20,820 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:20,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:20,868 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:20,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:20,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537820505] [2021-03-11 14:39:20,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:20,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:20,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747343148] [2021-03-11 14:39:20,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:20,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:20,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:20,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:20,908 INFO L87 Difference]: Start difference. First operand 379 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:21,067 INFO L93 Difference]: Finished difference Result 637 states and 1887 transitions. [2021-03-11 14:39:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:21,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:21,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:21,069 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:39:21,070 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:39:21,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:39:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 390. [2021-03-11 14:39:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4601542416452444) internal successors, (1346), 389 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1346 transitions. [2021-03-11 14:39:21,076 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1346 transitions. Word has length 22 [2021-03-11 14:39:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:21,076 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1346 transitions. [2021-03-11 14:39:21,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1346 transitions. [2021-03-11 14:39:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:21,076 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:21,076 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:21,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1038 [2021-03-11 14:39:21,077 INFO L428 AbstractCegarLoop]: === Iteration 1040 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:21,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:21,077 INFO L82 PathProgramCache]: Analyzing trace with hash 484464821, now seen corresponding path program 1034 times [2021-03-11 14:39:21,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:21,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789759145] [2021-03-11 14:39:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:21,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:21,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:21,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:21,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:21,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:21,126 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:21,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:21,151 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:21,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:21,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:21,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:21,233 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:21,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:21,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789759145] [2021-03-11 14:39:21,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:21,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:21,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776087988] [2021-03-11 14:39:21,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:21,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:21,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:21,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:21,265 INFO L87 Difference]: Start difference. First operand 390 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:21,408 INFO L93 Difference]: Finished difference Result 640 states and 1890 transitions. [2021-03-11 14:39:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:21,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:21,411 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:39:21,411 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:39:21,411 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 233.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:39:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 387. [2021-03-11 14:39:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.466321243523316) internal successors, (1338), 386 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1338 transitions. [2021-03-11 14:39:21,418 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1338 transitions. Word has length 22 [2021-03-11 14:39:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:21,418 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1338 transitions. [2021-03-11 14:39:21,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1338 transitions. [2021-03-11 14:39:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:21,418 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:21,418 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:21,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1039 [2021-03-11 14:39:21,418 INFO L428 AbstractCegarLoop]: === Iteration 1041 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:21,419 INFO L82 PathProgramCache]: Analyzing trace with hash -145560867, now seen corresponding path program 1035 times [2021-03-11 14:39:21,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:21,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395132436] [2021-03-11 14:39:21,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:21,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:21,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:21,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:21,451 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:21,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:21,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:21,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:21,503 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:21,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:21,539 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:21,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:21,586 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:21,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:21,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395132436] [2021-03-11 14:39:21,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:21,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:21,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798709343] [2021-03-11 14:39:21,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:21,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:21,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:21,630 INFO L87 Difference]: Start difference. First operand 387 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:21,785 INFO L93 Difference]: Finished difference Result 635 states and 1880 transitions. [2021-03-11 14:39:21,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:21,786 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:21,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:21,787 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:39:21,787 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:39:21,787 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:39:21,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 390. [2021-03-11 14:39:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4524421593830334) internal successors, (1343), 389 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1343 transitions. [2021-03-11 14:39:21,793 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1343 transitions. Word has length 22 [2021-03-11 14:39:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:21,793 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1343 transitions. [2021-03-11 14:39:21,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1343 transitions. [2021-03-11 14:39:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:21,794 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:21,794 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:21,794 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1040 [2021-03-11 14:39:21,794 INFO L428 AbstractCegarLoop]: === Iteration 1042 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:21,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2095780917, now seen corresponding path program 1036 times [2021-03-11 14:39:21,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:21,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167642997] [2021-03-11 14:39:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:21,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:21,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:21,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:21,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:21,823 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:21,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:21,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:21,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:21,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:21,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:21,902 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:21,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:21,943 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:21,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:21,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167642997] [2021-03-11 14:39:21,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:21,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:21,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486144163] [2021-03-11 14:39:21,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:21,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:21,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:21,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:21,984 INFO L87 Difference]: Start difference. First operand 390 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:22,136 INFO L93 Difference]: Finished difference Result 636 states and 1879 transitions. [2021-03-11 14:39:22,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:22,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:22,138 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:22,138 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:39:22,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 237.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:39:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 387. [2021-03-11 14:39:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4585492227979273) internal successors, (1335), 386 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1335 transitions. [2021-03-11 14:39:22,145 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1335 transitions. Word has length 22 [2021-03-11 14:39:22,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:22,145 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1335 transitions. [2021-03-11 14:39:22,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1335 transitions. [2021-03-11 14:39:22,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:22,145 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:22,145 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:22,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1041 [2021-03-11 14:39:22,145 INFO L428 AbstractCegarLoop]: === Iteration 1043 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1246583389, now seen corresponding path program 1037 times [2021-03-11 14:39:22,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:22,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169100999] [2021-03-11 14:39:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:22,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:22,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:22,175 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:22,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:22,195 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:22,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:22,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:22,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:22,254 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:22,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:22,297 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:22,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:22,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169100999] [2021-03-11 14:39:22,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:22,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:22,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320738503] [2021-03-11 14:39:22,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:22,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:22,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:22,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:22,337 INFO L87 Difference]: Start difference. First operand 387 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:22,498 INFO L93 Difference]: Finished difference Result 642 states and 1892 transitions. [2021-03-11 14:39:22,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:22,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:22,501 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:39:22,501 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:39:22,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 239.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:39:22,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 391. [2021-03-11 14:39:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4410256410256412) internal successors, (1342), 390 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1342 transitions. [2021-03-11 14:39:22,507 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1342 transitions. Word has length 22 [2021-03-11 14:39:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:22,507 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1342 transitions. [2021-03-11 14:39:22,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1342 transitions. [2021-03-11 14:39:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:22,508 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:22,508 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:22,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1042 [2021-03-11 14:39:22,508 INFO L428 AbstractCegarLoop]: === Iteration 1044 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:22,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:22,508 INFO L82 PathProgramCache]: Analyzing trace with hash -445595893, now seen corresponding path program 1038 times [2021-03-11 14:39:22,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:22,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664120719] [2021-03-11 14:39:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:22,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:22,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:22,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:22,538 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:22,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:22,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:22,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:22,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:22,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:22,621 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:22,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:22,668 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:22,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:22,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664120719] [2021-03-11 14:39:22,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:22,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:22,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835539640] [2021-03-11 14:39:22,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:22,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:22,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:22,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:22,716 INFO L87 Difference]: Start difference. First operand 391 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:22,866 INFO L93 Difference]: Finished difference Result 640 states and 1884 transitions. [2021-03-11 14:39:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:22,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:22,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:22,868 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:39:22,868 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:39:22,868 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:39:22,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 384. [2021-03-11 14:39:22,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:39:22,874 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:39:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:22,875 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:39:22,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:22,875 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:39:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:22,875 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:22,875 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:22,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1043 [2021-03-11 14:39:22,875 INFO L428 AbstractCegarLoop]: === Iteration 1045 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:22,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1093376903, now seen corresponding path program 1039 times [2021-03-11 14:39:22,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:22,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358811589] [2021-03-11 14:39:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:22,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:22,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:22,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:22,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:22,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:22,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:22,915 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:22,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:22,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:22,999 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:22,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:23,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:23,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:23,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358811589] [2021-03-11 14:39:23,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:23,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:23,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155763204] [2021-03-11 14:39:23,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:23,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:23,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:23,067 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:23,217 INFO L93 Difference]: Finished difference Result 643 states and 1891 transitions. [2021-03-11 14:39:23,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:23,219 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:39:23,219 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:39:23,220 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 243.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:23,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:39:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 392. [2021-03-11 14:39:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4475703324808182) internal successors, (1348), 391 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1348 transitions. [2021-03-11 14:39:23,226 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1348 transitions. Word has length 22 [2021-03-11 14:39:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:23,226 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1348 transitions. [2021-03-11 14:39:23,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1348 transitions. [2021-03-11 14:39:23,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:23,226 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:23,226 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:23,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1044 [2021-03-11 14:39:23,227 INFO L428 AbstractCegarLoop]: === Iteration 1046 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:23,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:23,227 INFO L82 PathProgramCache]: Analyzing trace with hash 41565681, now seen corresponding path program 1040 times [2021-03-11 14:39:23,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:23,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101690467] [2021-03-11 14:39:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:23,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:23,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:23,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:23,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:23,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:23,276 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:23,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:23,321 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:23,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:23,378 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:23,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:23,422 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:23,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:23,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101690467] [2021-03-11 14:39:23,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:23,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:23,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553015873] [2021-03-11 14:39:23,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:23,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:23,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:23,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:23,463 INFO L87 Difference]: Start difference. First operand 392 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:23,607 INFO L93 Difference]: Finished difference Result 646 states and 1894 transitions. [2021-03-11 14:39:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:23,610 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:39:23,610 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:39:23,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 281.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:39:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 389. [2021-03-11 14:39:23,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4536082474226806) internal successors, (1340), 388 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1340 transitions. [2021-03-11 14:39:23,616 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1340 transitions. Word has length 22 [2021-03-11 14:39:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:23,616 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1340 transitions. [2021-03-11 14:39:23,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:23,616 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1340 transitions. [2021-03-11 14:39:23,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:23,617 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:23,617 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:23,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1045 [2021-03-11 14:39:23,617 INFO L428 AbstractCegarLoop]: === Iteration 1047 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:23,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:23,617 INFO L82 PathProgramCache]: Analyzing trace with hash 505631581, now seen corresponding path program 1041 times [2021-03-11 14:39:23,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:23,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967674289] [2021-03-11 14:39:23,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:23,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:23,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:23,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:23,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:23,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:23,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:23,671 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:23,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:23,717 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:23,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:23,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:23,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:23,814 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:23,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:23,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967674289] [2021-03-11 14:39:23,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:23,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:23,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068711660] [2021-03-11 14:39:23,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:23,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:23,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:23,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:23,854 INFO L87 Difference]: Start difference. First operand 389 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:24,003 INFO L93 Difference]: Finished difference Result 646 states and 1893 transitions. [2021-03-11 14:39:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:24,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:24,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:24,006 INFO L225 Difference]: With dead ends: 646 [2021-03-11 14:39:24,006 INFO L226 Difference]: Without dead ends: 635 [2021-03-11 14:39:24,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 281.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-03-11 14:39:24,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 393. [2021-03-11 14:39:24,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.436224489795918) internal successors, (1347), 392 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1347 transitions. [2021-03-11 14:39:24,012 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1347 transitions. Word has length 22 [2021-03-11 14:39:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:24,012 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1347 transitions. [2021-03-11 14:39:24,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,012 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1347 transitions. [2021-03-11 14:39:24,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:24,013 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:24,013 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:24,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1046 [2021-03-11 14:39:24,013 INFO L428 AbstractCegarLoop]: === Iteration 1048 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 578938993, now seen corresponding path program 1042 times [2021-03-11 14:39:24,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:24,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562204879] [2021-03-11 14:39:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:24,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:24,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:24,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:24,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:24,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:24,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:24,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:24,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:24,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:24,163 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:24,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:24,207 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:24,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:24,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562204879] [2021-03-11 14:39:24,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:24,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:24,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813037777] [2021-03-11 14:39:24,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:24,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:24,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:24,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:24,248 INFO L87 Difference]: Start difference. First operand 393 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:24,388 INFO L93 Difference]: Finished difference Result 651 states and 1899 transitions. [2021-03-11 14:39:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:24,390 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:39:24,390 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:39:24,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 251.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:39:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 389. [2021-03-11 14:39:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.443298969072165) internal successors, (1336), 388 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1336 transitions. [2021-03-11 14:39:24,396 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1336 transitions. Word has length 22 [2021-03-11 14:39:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:24,396 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1336 transitions. [2021-03-11 14:39:24,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1336 transitions. [2021-03-11 14:39:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:24,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:24,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:24,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1047 [2021-03-11 14:39:24,397 INFO L428 AbstractCegarLoop]: === Iteration 1049 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:24,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1980871843, now seen corresponding path program 1043 times [2021-03-11 14:39:24,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:24,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557683101] [2021-03-11 14:39:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:24,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:24,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:24,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:24,427 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:24,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:24,447 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:24,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:24,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:24,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:24,520 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:24,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:24,557 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:24,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:24,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557683101] [2021-03-11 14:39:24,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:24,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:24,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946100919] [2021-03-11 14:39:24,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:24,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:24,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:24,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:24,590 INFO L87 Difference]: Start difference. First operand 389 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:24,730 INFO L93 Difference]: Finished difference Result 656 states and 1911 transitions. [2021-03-11 14:39:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:24,732 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:39:24,732 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:39:24,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 236.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:24,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:39:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 397. [2021-03-11 14:39:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.409090909090909) internal successors, (1350), 396 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1350 transitions. [2021-03-11 14:39:24,739 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1350 transitions. Word has length 22 [2021-03-11 14:39:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:24,739 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1350 transitions. [2021-03-11 14:39:24,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:24,739 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1350 transitions. [2021-03-11 14:39:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:24,739 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:24,739 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:24,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1048 [2021-03-11 14:39:24,739 INFO L428 AbstractCegarLoop]: === Iteration 1050 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:24,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:24,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1962437817, now seen corresponding path program 1044 times [2021-03-11 14:39:24,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:24,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362944161] [2021-03-11 14:39:24,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:24,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:24,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:24,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:24,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:24,767 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:24,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:24,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:24,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:24,835 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:24,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:24,871 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:24,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:24,917 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:24,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:24,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362944161] [2021-03-11 14:39:24,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:24,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:24,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839109467] [2021-03-11 14:39:24,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:24,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:24,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:24,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:24,961 INFO L87 Difference]: Start difference. First operand 397 states and 1350 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:25,078 INFO L93 Difference]: Finished difference Result 658 states and 1908 transitions. [2021-03-11 14:39:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:25,080 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:39:25,080 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:39:25,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 239.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:25,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:39:25,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 384. [2021-03-11 14:39:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:39:25,086 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:39:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:25,086 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:39:25,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:39:25,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:25,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:25,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:25,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1049 [2021-03-11 14:39:25,087 INFO L428 AbstractCegarLoop]: === Iteration 1051 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:25,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:25,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1185796665, now seen corresponding path program 1045 times [2021-03-11 14:39:25,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:25,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020097551] [2021-03-11 14:39:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:25,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:25,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:25,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:25,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:25,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:25,137 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:25,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:25,181 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:25,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:25,210 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:25,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:25,245 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:25,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:25,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020097551] [2021-03-11 14:39:25,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:25,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:25,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869633008] [2021-03-11 14:39:25,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:25,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:25,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:25,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:25,278 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:25,396 INFO L93 Difference]: Finished difference Result 635 states and 1869 transitions. [2021-03-11 14:39:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:25,398 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:39:25,398 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:39:25,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 225.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:39:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 391. [2021-03-11 14:39:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4384615384615387) internal successors, (1341), 390 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1341 transitions. [2021-03-11 14:39:25,405 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1341 transitions. Word has length 22 [2021-03-11 14:39:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:25,405 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1341 transitions. [2021-03-11 14:39:25,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1341 transitions. [2021-03-11 14:39:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:25,405 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:25,405 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:25,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1050 [2021-03-11 14:39:25,406 INFO L428 AbstractCegarLoop]: === Iteration 1052 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1055545119, now seen corresponding path program 1046 times [2021-03-11 14:39:25,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:25,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597571331] [2021-03-11 14:39:25,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:25,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:25,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:25,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:25,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:25,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:25,457 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:25,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:25,499 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:25,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:25,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:25,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:25,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:25,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:25,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597571331] [2021-03-11 14:39:25,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:25,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:25,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041285694] [2021-03-11 14:39:25,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:25,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:25,618 INFO L87 Difference]: Start difference. First operand 391 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:25,786 INFO L93 Difference]: Finished difference Result 636 states and 1868 transitions. [2021-03-11 14:39:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:25,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:25,789 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:25,789 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:39:25,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 266.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:39:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 388. [2021-03-11 14:39:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4444444444444446) internal successors, (1333), 387 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1333 transitions. [2021-03-11 14:39:25,796 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1333 transitions. Word has length 22 [2021-03-11 14:39:25,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:25,796 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1333 transitions. [2021-03-11 14:39:25,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:25,796 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1333 transitions. [2021-03-11 14:39:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:25,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:25,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:25,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1051 [2021-03-11 14:39:25,796 INFO L428 AbstractCegarLoop]: === Iteration 1053 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:25,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:25,796 INFO L82 PathProgramCache]: Analyzing trace with hash -91705077, now seen corresponding path program 1047 times [2021-03-11 14:39:25,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:25,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208723671] [2021-03-11 14:39:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:25,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:25,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:25,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:25,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:25,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:25,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:25,868 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:25,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:25,918 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:25,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:25,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:25,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:26,029 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:26,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:26,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208723671] [2021-03-11 14:39:26,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:26,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:26,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578873282] [2021-03-11 14:39:26,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:26,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:26,075 INFO L87 Difference]: Start difference. First operand 388 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:26,197 INFO L93 Difference]: Finished difference Result 636 states and 1865 transitions. [2021-03-11 14:39:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:26,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:26,199 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:26,199 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:39:26,199 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 297.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:39:26,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 392. [2021-03-11 14:39:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4271099744245523) internal successors, (1340), 391 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1340 transitions. [2021-03-11 14:39:26,206 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1340 transitions. Word has length 22 [2021-03-11 14:39:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:26,206 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1340 transitions. [2021-03-11 14:39:26,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1340 transitions. [2021-03-11 14:39:26,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:26,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:26,206 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:26,206 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1052 [2021-03-11 14:39:26,206 INFO L428 AbstractCegarLoop]: === Iteration 1054 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:26,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:26,207 INFO L82 PathProgramCache]: Analyzing trace with hash -18397665, now seen corresponding path program 1048 times [2021-03-11 14:39:26,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:26,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844158104] [2021-03-11 14:39:26,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:26,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:26,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:26,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:26,231 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:26,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:26,247 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:26,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:26,282 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:26,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:26,338 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:26,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:26,384 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:26,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:26,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844158104] [2021-03-11 14:39:26,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:26,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:26,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977309825] [2021-03-11 14:39:26,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:26,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:26,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:26,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:26,424 INFO L87 Difference]: Start difference. First operand 392 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:26,572 INFO L93 Difference]: Finished difference Result 641 states and 1871 transitions. [2021-03-11 14:39:26,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:26,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:26,575 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:39:26,575 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:39:26,575 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 230.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:39:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 388. [2021-03-11 14:39:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.434108527131783) internal successors, (1329), 387 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1329 transitions. [2021-03-11 14:39:26,581 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1329 transitions. Word has length 22 [2021-03-11 14:39:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:26,581 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1329 transitions. [2021-03-11 14:39:26,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1329 transitions. [2021-03-11 14:39:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:26,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:26,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:26,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1053 [2021-03-11 14:39:26,582 INFO L428 AbstractCegarLoop]: === Iteration 1055 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:26,582 INFO L82 PathProgramCache]: Analyzing trace with hash -966892405, now seen corresponding path program 1049 times [2021-03-11 14:39:26,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:26,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412906914] [2021-03-11 14:39:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:26,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:26,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:26,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:26,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:26,611 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:26,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:26,631 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:26,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:26,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:26,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:26,732 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:26,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:26,776 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:26,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:26,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412906914] [2021-03-11 14:39:26,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:26,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:26,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309745056] [2021-03-11 14:39:26,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:26,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:26,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:26,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:26,818 INFO L87 Difference]: Start difference. First operand 388 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:26,985 INFO L93 Difference]: Finished difference Result 639 states and 1868 transitions. [2021-03-11 14:39:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:26,986 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:26,987 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:39:26,987 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:39:26,987 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 281.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:26,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:39:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 393. [2021-03-11 14:39:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.413265306122449) internal successors, (1338), 392 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1338 transitions. [2021-03-11 14:39:26,994 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1338 transitions. Word has length 22 [2021-03-11 14:39:26,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:26,994 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1338 transitions. [2021-03-11 14:39:26,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1338 transitions. [2021-03-11 14:39:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:26,994 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:26,994 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:26,994 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054 [2021-03-11 14:39:26,994 INFO L428 AbstractCegarLoop]: === Iteration 1056 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:26,995 INFO L82 PathProgramCache]: Analyzing trace with hash 743720903, now seen corresponding path program 1050 times [2021-03-11 14:39:26,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:26,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973001143] [2021-03-11 14:39:26,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:27,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:27,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:27,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:27,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:27,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:27,034 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:27,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:27,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:27,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:27,114 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:27,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:27,149 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:27,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:27,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:27,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973001143] [2021-03-11 14:39:27,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:27,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:27,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297370975] [2021-03-11 14:39:27,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:27,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:27,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:27,182 INFO L87 Difference]: Start difference. First operand 393 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:27,328 INFO L93 Difference]: Finished difference Result 635 states and 1857 transitions. [2021-03-11 14:39:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:27,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:27,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:27,331 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:39:27,331 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:39:27,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:27,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:39:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 384. [2021-03-11 14:39:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.441253263707572) internal successors, (1318), 383 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1318 transitions. [2021-03-11 14:39:27,337 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:27,337 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1318 transitions. [2021-03-11 14:39:27,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1318 transitions. [2021-03-11 14:39:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:27,338 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:27,338 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:27,338 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1055 [2021-03-11 14:39:27,338 INFO L428 AbstractCegarLoop]: === Iteration 1057 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:27,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1319437711, now seen corresponding path program 1051 times [2021-03-11 14:39:27,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:27,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885339344] [2021-03-11 14:39:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:27,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:27,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:27,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:27,367 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:27,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:27,392 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:27,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:27,421 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:27,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:27,459 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:27,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:27,502 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:27,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:27,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885339344] [2021-03-11 14:39:27,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:27,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:27,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436130325] [2021-03-11 14:39:27,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:27,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:27,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:27,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:27,547 INFO L87 Difference]: Start difference. First operand 384 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:27,694 INFO L93 Difference]: Finished difference Result 652 states and 1905 transitions. [2021-03-11 14:39:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:27,696 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:39:27,696 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:39:27,696 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:39:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 394. [2021-03-11 14:39:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.422391857506361) internal successors, (1345), 393 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1345 transitions. [2021-03-11 14:39:27,702 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1345 transitions. Word has length 22 [2021-03-11 14:39:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:27,703 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1345 transitions. [2021-03-11 14:39:27,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1345 transitions. [2021-03-11 14:39:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:27,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:27,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:27,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1056 [2021-03-11 14:39:27,703 INFO L428 AbstractCegarLoop]: === Iteration 1058 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:27,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1283350303, now seen corresponding path program 1052 times [2021-03-11 14:39:27,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:27,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710082057] [2021-03-11 14:39:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:27,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:27,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:27,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:27,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:27,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:27,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:27,754 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:27,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:27,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:27,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:27,815 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:27,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:27,851 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:27,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:27,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:27,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710082057] [2021-03-11 14:39:27,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:27,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:27,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556724483] [2021-03-11 14:39:27,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:27,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:27,885 INFO L87 Difference]: Start difference. First operand 394 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:28,007 INFO L93 Difference]: Finished difference Result 650 states and 1897 transitions. [2021-03-11 14:39:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:28,009 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:39:28,009 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:39:28,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 216.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:39:28,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 390. [2021-03-11 14:39:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.429305912596401) internal successors, (1334), 389 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1334 transitions. [2021-03-11 14:39:28,015 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1334 transitions. Word has length 22 [2021-03-11 14:39:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:28,016 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1334 transitions. [2021-03-11 14:39:28,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1334 transitions. [2021-03-11 14:39:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:28,016 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:28,016 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:28,016 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1057 [2021-03-11 14:39:28,016 INFO L428 AbstractCegarLoop]: === Iteration 1059 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:28,016 INFO L82 PathProgramCache]: Analyzing trace with hash 169967285, now seen corresponding path program 1053 times [2021-03-11 14:39:28,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:28,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934241508] [2021-03-11 14:39:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:28,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:28,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:28,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:28,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:28,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:28,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:28,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:28,100 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:28,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:28,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:28,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:28,186 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:28,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:28,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934241508] [2021-03-11 14:39:28,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:28,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:28,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405191048] [2021-03-11 14:39:28,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:28,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:28,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:28,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:28,230 INFO L87 Difference]: Start difference. First operand 390 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:28,406 INFO L93 Difference]: Finished difference Result 652 states and 1897 transitions. [2021-03-11 14:39:28,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:28,408 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:39:28,408 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:39:28,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:39:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 398. [2021-03-11 14:39:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.395465994962217) internal successors, (1348), 397 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1348 transitions. [2021-03-11 14:39:28,415 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1348 transitions. Word has length 22 [2021-03-11 14:39:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:28,415 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1348 transitions. [2021-03-11 14:39:28,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1348 transitions. [2021-03-11 14:39:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:28,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:28,415 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:28,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1058 [2021-03-11 14:39:28,415 INFO L428 AbstractCegarLoop]: === Iteration 1060 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:28,416 INFO L82 PathProgramCache]: Analyzing trace with hash 188401311, now seen corresponding path program 1054 times [2021-03-11 14:39:28,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:28,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270377361] [2021-03-11 14:39:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:28,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:28,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:28,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:28,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:28,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:28,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:28,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:28,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:28,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:28,532 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:28,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:28,578 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:28,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:28,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:28,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270377361] [2021-03-11 14:39:28,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:28,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:28,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976566009] [2021-03-11 14:39:28,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:28,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:28,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:28,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:28,620 INFO L87 Difference]: Start difference. First operand 398 states and 1348 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:28,754 INFO L93 Difference]: Finished difference Result 654 states and 1894 transitions. [2021-03-11 14:39:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:28,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:28,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:28,756 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:39:28,756 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:39:28,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:28,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:39:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 390. [2021-03-11 14:39:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4138817480719794) internal successors, (1328), 389 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1328 transitions. [2021-03-11 14:39:28,762 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1328 transitions. Word has length 22 [2021-03-11 14:39:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:28,762 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1328 transitions. [2021-03-11 14:39:28,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:28,762 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1328 transitions. [2021-03-11 14:39:28,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:28,763 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:28,763 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:28,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1059 [2021-03-11 14:39:28,763 INFO L428 AbstractCegarLoop]: === Iteration 1061 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1854805109, now seen corresponding path program 1055 times [2021-03-11 14:39:28,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:28,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196135902] [2021-03-11 14:39:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:28,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:28,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:28,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:28,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:28,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:28,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:28,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:28,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:28,840 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:28,897 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:28,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:28,939 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:28,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:28,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196135902] [2021-03-11 14:39:28,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:28,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:28,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826380341] [2021-03-11 14:39:28,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:28,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:28,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:28,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:28,980 INFO L87 Difference]: Start difference. First operand 390 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:29,122 INFO L93 Difference]: Finished difference Result 645 states and 1876 transitions. [2021-03-11 14:39:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:29,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:29,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:29,124 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:39:29,124 INFO L226 Difference]: Without dead ends: 633 [2021-03-11 14:39:29,124 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 251.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-03-11 14:39:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 395. [2021-03-11 14:39:29,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.3934010152284264) internal successors, (1337), 394 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1337 transitions. [2021-03-11 14:39:29,130 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1337 transitions. Word has length 22 [2021-03-11 14:39:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:29,130 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1337 transitions. [2021-03-11 14:39:29,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1337 transitions. [2021-03-11 14:39:29,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:29,130 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:29,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:29,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1060 [2021-03-11 14:39:29,131 INFO L428 AbstractCegarLoop]: === Iteration 1062 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:29,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:29,131 INFO L82 PathProgramCache]: Analyzing trace with hash -729548879, now seen corresponding path program 1056 times [2021-03-11 14:39:29,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:29,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021379165] [2021-03-11 14:39:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:29,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:29,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:29,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:29,155 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:39:29,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:39:29,171 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:29,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:29,192 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:29,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:29,238 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:29,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:29,287 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:29,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:29,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021379165] [2021-03-11 14:39:29,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:29,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:29,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637327847] [2021-03-11 14:39:29,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:29,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:29,328 INFO L87 Difference]: Start difference. First operand 395 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:29,475 INFO L93 Difference]: Finished difference Result 641 states and 1865 transitions. [2021-03-11 14:39:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:29,477 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:39:29,477 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:39:29,477 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 217.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:29,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:39:29,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 379. [2021-03-11 14:39:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.455026455026455) internal successors, (1306), 378 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1306 transitions. [2021-03-11 14:39:29,483 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1306 transitions. Word has length 22 [2021-03-11 14:39:29,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:29,483 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1306 transitions. [2021-03-11 14:39:29,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1306 transitions. [2021-03-11 14:39:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:29,484 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:29,484 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:29,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1061 [2021-03-11 14:39:29,484 INFO L428 AbstractCegarLoop]: === Iteration 1063 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:29,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1593878683, now seen corresponding path program 1057 times [2021-03-11 14:39:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:29,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103425137] [2021-03-11 14:39:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:29,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:29,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:29,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:29,516 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:29,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:29,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:29,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:29,602 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:29,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:29,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:29,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:29,699 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:29,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:29,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103425137] [2021-03-11 14:39:29,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:29,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:29,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232659225] [2021-03-11 14:39:29,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:29,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:29,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:29,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:29,744 INFO L87 Difference]: Start difference. First operand 379 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:29,879 INFO L93 Difference]: Finished difference Result 607 states and 1790 transitions. [2021-03-11 14:39:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:29,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:29,881 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:39:29,882 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:39:29,882 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 276.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:39:29,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 384. [2021-03-11 14:39:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:39:29,888 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:39:29,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:29,888 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:39:29,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:29,888 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:39:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:29,888 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:29,888 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:29,888 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1062 [2021-03-11 14:39:29,888 INFO L428 AbstractCegarLoop]: === Iteration 1064 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:29,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:29,888 INFO L82 PathProgramCache]: Analyzing trace with hash 520793303, now seen corresponding path program 1058 times [2021-03-11 14:39:29,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831702473] [2021-03-11 14:39:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:29,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:29,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:29,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:29,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:29,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:29,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:29,955 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:29,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:30,001 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:30,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:30,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:30,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:30,095 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:30,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:30,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831702473] [2021-03-11 14:39:30,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:30,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:30,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552633789] [2021-03-11 14:39:30,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:30,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:30,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:30,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:30,129 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:30,257 INFO L93 Difference]: Finished difference Result 612 states and 1799 transitions. [2021-03-11 14:39:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:30,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:30,260 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:39:30,260 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:39:30,260 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:30,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:39:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 383. [2021-03-11 14:39:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4528795811518322) internal successors, (1319), 382 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1319 transitions. [2021-03-11 14:39:30,266 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1319 transitions. Word has length 22 [2021-03-11 14:39:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:30,266 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1319 transitions. [2021-03-11 14:39:30,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1319 transitions. [2021-03-11 14:39:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:30,267 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:30,267 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:30,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1063 [2021-03-11 14:39:30,267 INFO L428 AbstractCegarLoop]: === Iteration 1065 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash -87958227, now seen corresponding path program 1059 times [2021-03-11 14:39:30,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:30,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676169290] [2021-03-11 14:39:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:30,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:30,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:30,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:30,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:30,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:30,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:30,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:30,386 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:30,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:30,447 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:30,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:30,493 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:30,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676169290] [2021-03-11 14:39:30,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:30,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:30,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135096361] [2021-03-11 14:39:30,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:30,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:30,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:30,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:30,533 INFO L87 Difference]: Start difference. First operand 383 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:30,642 INFO L93 Difference]: Finished difference Result 605 states and 1785 transitions. [2021-03-11 14:39:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:30,645 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:39:30,645 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:39:30,645 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:39:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 384. [2021-03-11 14:39:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.446475195822454) internal successors, (1320), 383 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1320 transitions. [2021-03-11 14:39:30,651 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:30,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:30,651 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1320 transitions. [2021-03-11 14:39:30,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1320 transitions. [2021-03-11 14:39:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:30,651 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:30,651 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:30,651 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1064 [2021-03-11 14:39:30,651 INFO L428 AbstractCegarLoop]: === Iteration 1066 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:30,652 INFO L82 PathProgramCache]: Analyzing trace with hash 447271575, now seen corresponding path program 1060 times [2021-03-11 14:39:30,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:30,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028853885] [2021-03-11 14:39:30,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:30,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:30,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:30,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:30,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:30,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:30,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:30,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:30,769 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:30,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:30,830 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:30,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:30,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:30,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:30,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028853885] [2021-03-11 14:39:30,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:30,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:30,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40926303] [2021-03-11 14:39:30,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:30,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:30,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:30,915 INFO L87 Difference]: Start difference. First operand 384 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:31,072 INFO L93 Difference]: Finished difference Result 608 states and 1790 transitions. [2021-03-11 14:39:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:31,074 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:39:31,074 INFO L226 Difference]: Without dead ends: 595 [2021-03-11 14:39:31,075 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 309.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:31,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-03-11 14:39:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 383. [2021-03-11 14:39:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.450261780104712) internal successors, (1318), 382 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1318 transitions. [2021-03-11 14:39:31,081 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:31,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:31,081 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1318 transitions. [2021-03-11 14:39:31,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1318 transitions. [2021-03-11 14:39:31,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:31,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:31,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:31,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1065 [2021-03-11 14:39:31,081 INFO L428 AbstractCegarLoop]: === Iteration 1067 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:31,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash -66952019, now seen corresponding path program 1061 times [2021-03-11 14:39:31,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:31,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5121651] [2021-03-11 14:39:31,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:31,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:31,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:31,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:31,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:31,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:31,154 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:31,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:31,204 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:31,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:31,242 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:31,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:31,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:31,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:31,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5121651] [2021-03-11 14:39:31,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:31,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:31,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085388906] [2021-03-11 14:39:31,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:31,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:31,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:31,333 INFO L87 Difference]: Start difference. First operand 383 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:31,492 INFO L93 Difference]: Finished difference Result 618 states and 1813 transitions. [2021-03-11 14:39:31,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:31,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:31,495 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:39:31,495 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:39:31,495 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 301.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:39:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 387. [2021-03-11 14:39:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4326424870466323) internal successors, (1325), 386 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1325 transitions. [2021-03-11 14:39:31,501 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:31,501 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1325 transitions. [2021-03-11 14:39:31,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,501 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1325 transitions. [2021-03-11 14:39:31,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:31,502 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:31,502 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:31,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1066 [2021-03-11 14:39:31,502 INFO L428 AbstractCegarLoop]: === Iteration 1068 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:31,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:31,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1541363163, now seen corresponding path program 1062 times [2021-03-11 14:39:31,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:31,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883390260] [2021-03-11 14:39:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:31,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:31,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:31,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:31,534 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:31,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:31,572 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:31,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:31,621 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:31,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:31,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:31,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:31,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:31,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:31,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883390260] [2021-03-11 14:39:31,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:31,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:31,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089089074] [2021-03-11 14:39:31,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:31,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:31,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:31,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:31,746 INFO L87 Difference]: Start difference. First operand 387 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:31,930 INFO L93 Difference]: Finished difference Result 616 states and 1805 transitions. [2021-03-11 14:39:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:31,933 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:39:31,933 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:39:31,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 290.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:39:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 382. [2021-03-11 14:39:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:39:31,939 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:39:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:31,939 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:39:31,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:39:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:31,939 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:31,939 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:31,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1067 [2021-03-11 14:39:31,939 INFO L428 AbstractCegarLoop]: === Iteration 1069 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1150979543, now seen corresponding path program 1063 times [2021-03-11 14:39:31,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:31,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711888458] [2021-03-11 14:39:31,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:31,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:31,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:31,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:31,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:31,971 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:31,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:32,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:32,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:32,050 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:32,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:32,102 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:32,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:32,147 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:32,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711888458] [2021-03-11 14:39:32,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:32,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:32,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090627616] [2021-03-11 14:39:32,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:32,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:32,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:32,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:32,190 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:32,320 INFO L93 Difference]: Finished difference Result 615 states and 1804 transitions. [2021-03-11 14:39:32,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:32,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:32,321 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:39:32,321 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:39:32,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:39:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 386. [2021-03-11 14:39:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4415584415584415) internal successors, (1325), 385 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1325 transitions. [2021-03-11 14:39:32,328 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:32,328 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1325 transitions. [2021-03-11 14:39:32,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1325 transitions. [2021-03-11 14:39:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:32,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:32,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:32,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1068 [2021-03-11 14:39:32,328 INFO L428 AbstractCegarLoop]: === Iteration 1070 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:32,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash 77894163, now seen corresponding path program 1064 times [2021-03-11 14:39:32,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:32,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891313974] [2021-03-11 14:39:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:32,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:32,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:32,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:32,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:32,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:32,382 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:32,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:32,413 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:32,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:32,459 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:32,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:32,505 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:32,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:32,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891313974] [2021-03-11 14:39:32,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:32,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178009658] [2021-03-11 14:39:32,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:32,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:32,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:32,550 INFO L87 Difference]: Start difference. First operand 386 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:32,722 INFO L93 Difference]: Finished difference Result 620 states and 1813 transitions. [2021-03-11 14:39:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:32,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:32,724 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:39:32,725 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:39:32,725 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 269.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:39:32,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 385. [2021-03-11 14:39:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4453125) internal successors, (1323), 384 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1323 transitions. [2021-03-11 14:39:32,731 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1323 transitions. Word has length 22 [2021-03-11 14:39:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:32,731 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1323 transitions. [2021-03-11 14:39:32,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1323 transitions. [2021-03-11 14:39:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:32,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:32,731 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:32,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1069 [2021-03-11 14:39:32,731 INFO L428 AbstractCegarLoop]: === Iteration 1071 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:32,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:32,732 INFO L82 PathProgramCache]: Analyzing trace with hash 563234221, now seen corresponding path program 1065 times [2021-03-11 14:39:32,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:32,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914483752] [2021-03-11 14:39:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:32,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:32,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:32,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:32,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:32,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:32,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:32,800 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:32,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:32,841 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:32,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:32,896 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:32,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:32,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:32,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:32,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914483752] [2021-03-11 14:39:32,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:32,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:32,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071690698] [2021-03-11 14:39:32,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:32,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:32,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:32,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:32,995 INFO L87 Difference]: Start difference. First operand 385 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:33,162 INFO L93 Difference]: Finished difference Result 618 states and 1808 transitions. [2021-03-11 14:39:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:33,164 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:39:33,164 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:39:33,164 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 279.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:39:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 387. [2021-03-11 14:39:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.435233160621762) internal successors, (1326), 386 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1326 transitions. [2021-03-11 14:39:33,170 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1326 transitions. Word has length 22 [2021-03-11 14:39:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:33,170 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1326 transitions. [2021-03-11 14:39:33,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1326 transitions. [2021-03-11 14:39:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:33,171 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:33,171 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:33,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1070 [2021-03-11 14:39:33,171 INFO L428 AbstractCegarLoop]: === Iteration 1072 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:33,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:33,171 INFO L82 PathProgramCache]: Analyzing trace with hash 25378643, now seen corresponding path program 1066 times [2021-03-11 14:39:33,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:33,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016183403] [2021-03-11 14:39:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:33,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:33,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:33,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:33,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:33,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:33,240 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:33,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:33,279 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:33,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:33,330 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:33,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:33,374 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:33,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:33,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016183403] [2021-03-11 14:39:33,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:33,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:33,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414175177] [2021-03-11 14:39:33,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:33,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:33,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:33,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:33,417 INFO L87 Difference]: Start difference. First operand 387 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:33,582 INFO L93 Difference]: Finished difference Result 625 states and 1820 transitions. [2021-03-11 14:39:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:33,585 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:39:33,585 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:39:33,585 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 263.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:39:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 385. [2021-03-11 14:39:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4401041666666665) internal successors, (1321), 384 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1321 transitions. [2021-03-11 14:39:33,591 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1321 transitions. Word has length 22 [2021-03-11 14:39:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:33,591 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1321 transitions. [2021-03-11 14:39:33,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:33,591 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1321 transitions. [2021-03-11 14:39:33,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:33,592 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:33,592 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:33,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1071 [2021-03-11 14:39:33,592 INFO L428 AbstractCegarLoop]: === Iteration 1073 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash 584240429, now seen corresponding path program 1067 times [2021-03-11 14:39:33,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:33,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488215507] [2021-03-11 14:39:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:33,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:33,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:33,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:33,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:33,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:33,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:33,659 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:33,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:33,699 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:33,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:33,737 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:33,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:33,781 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:33,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:33,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488215507] [2021-03-11 14:39:33,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:33,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:33,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563581480] [2021-03-11 14:39:33,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:33,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:33,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:33,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:33,823 INFO L87 Difference]: Start difference. First operand 385 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:34,008 INFO L93 Difference]: Finished difference Result 634 states and 1842 transitions. [2021-03-11 14:39:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:34,010 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:39:34,010 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:39:34,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 277.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:39:34,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 393. [2021-03-11 14:39:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4056122448979593) internal successors, (1335), 392 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1335 transitions. [2021-03-11 14:39:34,016 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1335 transitions. Word has length 22 [2021-03-11 14:39:34,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:34,016 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1335 transitions. [2021-03-11 14:39:34,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,016 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1335 transitions. [2021-03-11 14:39:34,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:34,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:34,017 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:34,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1072 [2021-03-11 14:39:34,017 INFO L428 AbstractCegarLoop]: === Iteration 1074 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1119470231, now seen corresponding path program 1068 times [2021-03-11 14:39:34,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421592190] [2021-03-11 14:39:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:34,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:34,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:34,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:34,052 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:34,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:34,089 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:34,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:34,128 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:34,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:34,165 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:34,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:34,210 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:34,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:34,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421592190] [2021-03-11 14:39:34,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:34,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:34,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467144937] [2021-03-11 14:39:34,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:34,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:34,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:34,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:34,252 INFO L87 Difference]: Start difference. First operand 393 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:34,393 INFO L93 Difference]: Finished difference Result 636 states and 1839 transitions. [2021-03-11 14:39:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:34,394 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:34,395 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:34,395 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:39:34,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 241.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:39:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 382. [2021-03-11 14:39:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4461942257217846) internal successors, (1313), 381 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1313 transitions. [2021-03-11 14:39:34,401 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1313 transitions. Word has length 22 [2021-03-11 14:39:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:34,401 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1313 transitions. [2021-03-11 14:39:34,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1313 transitions. [2021-03-11 14:39:34,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:34,401 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:34,401 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:34,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1073 [2021-03-11 14:39:34,402 INFO L428 AbstractCegarLoop]: === Iteration 1075 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:34,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1128194025, now seen corresponding path program 1069 times [2021-03-11 14:39:34,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:34,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830219626] [2021-03-11 14:39:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:34,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:34,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:34,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:34,428 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:34,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:34,456 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:34,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:34,495 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:34,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:34,549 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:34,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:34,597 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:34,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:34,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830219626] [2021-03-11 14:39:34,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:34,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:34,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568700271] [2021-03-11 14:39:34,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:34,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:34,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:34,639 INFO L87 Difference]: Start difference. First operand 382 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:34,779 INFO L93 Difference]: Finished difference Result 607 states and 1784 transitions. [2021-03-11 14:39:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:34,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:34,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:34,781 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:39:34,781 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:39:34,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:39:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 385. [2021-03-11 14:39:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4375) internal successors, (1320), 384 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1320 transitions. [2021-03-11 14:39:34,787 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1320 transitions. Word has length 22 [2021-03-11 14:39:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:34,787 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1320 transitions. [2021-03-11 14:39:34,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:34,787 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1320 transitions. [2021-03-11 14:39:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:34,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:34,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:34,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1074 [2021-03-11 14:39:34,788 INFO L428 AbstractCegarLoop]: === Iteration 1076 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:34,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:34,788 INFO L82 PathProgramCache]: Analyzing trace with hash -592964223, now seen corresponding path program 1070 times [2021-03-11 14:39:34,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:34,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750976285] [2021-03-11 14:39:34,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:34,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:34,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:34,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:34,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:34,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:34,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:34,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:34,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:34,905 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:34,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:34,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:34,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:35,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:35,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:35,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750976285] [2021-03-11 14:39:35,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:35,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:35,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641248494] [2021-03-11 14:39:35,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:35,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:35,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:35,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:35,051 INFO L87 Difference]: Start difference. First operand 385 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:35,244 INFO L93 Difference]: Finished difference Result 610 states and 1789 transitions. [2021-03-11 14:39:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:35,245 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:35,246 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:39:35,246 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:39:35,246 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 312.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:35,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:39:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 384. [2021-03-11 14:39:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.441253263707572) internal successors, (1318), 383 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1318 transitions. [2021-03-11 14:39:35,252 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1318 transitions. Word has length 22 [2021-03-11 14:39:35,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:35,252 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1318 transitions. [2021-03-11 14:39:35,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1318 transitions. [2021-03-11 14:39:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:35,253 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:35,253 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:35,253 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1075 [2021-03-11 14:39:35,253 INFO L428 AbstractCegarLoop]: === Iteration 1077 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:35,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:35,253 INFO L82 PathProgramCache]: Analyzing trace with hash -34102437, now seen corresponding path program 1071 times [2021-03-11 14:39:35,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:35,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270124232] [2021-03-11 14:39:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:35,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:35,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:35,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:35,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:35,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:35,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:35,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:35,372 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:35,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:35,422 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:35,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:35,468 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:35,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:35,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270124232] [2021-03-11 14:39:35,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:35,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:35,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917302314] [2021-03-11 14:39:35,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:35,511 INFO L87 Difference]: Start difference. First operand 384 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:35,674 INFO L93 Difference]: Finished difference Result 610 states and 1788 transitions. [2021-03-11 14:39:35,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:35,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:35,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:35,677 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:39:35,677 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:39:35,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 275.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:39:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 386. [2021-03-11 14:39:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.431168831168831) internal successors, (1321), 385 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1321 transitions. [2021-03-11 14:39:35,683 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1321 transitions. Word has length 22 [2021-03-11 14:39:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:35,683 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1321 transitions. [2021-03-11 14:39:35,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1321 transitions. [2021-03-11 14:39:35,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:35,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:35,684 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:35,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1076 [2021-03-11 14:39:35,684 INFO L428 AbstractCegarLoop]: === Iteration 1078 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:35,684 INFO L82 PathProgramCache]: Analyzing trace with hash -571958015, now seen corresponding path program 1072 times [2021-03-11 14:39:35,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:35,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574920740] [2021-03-11 14:39:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:35,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:35,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:35,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:35,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:35,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:35,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:35,752 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:35,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:35,801 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:35,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:35,851 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:35,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:35,897 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:35,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:35,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574920740] [2021-03-11 14:39:35,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:35,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:35,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977674852] [2021-03-11 14:39:35,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:35,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:35,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:35,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:35,939 INFO L87 Difference]: Start difference. First operand 386 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:36,110 INFO L93 Difference]: Finished difference Result 617 states and 1800 transitions. [2021-03-11 14:39:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:36,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:36,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:36,112 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:39:36,112 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:39:36,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 272.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:39:36,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 384. [2021-03-11 14:39:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.436031331592689) internal successors, (1316), 383 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1316 transitions. [2021-03-11 14:39:36,118 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1316 transitions. Word has length 22 [2021-03-11 14:39:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:36,118 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1316 transitions. [2021-03-11 14:39:36,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1316 transitions. [2021-03-11 14:39:36,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:36,119 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:36,119 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:36,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1077 [2021-03-11 14:39:36,119 INFO L428 AbstractCegarLoop]: === Iteration 1079 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:36,119 INFO L82 PathProgramCache]: Analyzing trace with hash -86617957, now seen corresponding path program 1073 times [2021-03-11 14:39:36,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:36,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252124851] [2021-03-11 14:39:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:36,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:36,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:36,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:36,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:36,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:36,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:36,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:36,234 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:36,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:36,280 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:36,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:36,315 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:36,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:36,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252124851] [2021-03-11 14:39:36,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:36,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:36,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289329821] [2021-03-11 14:39:36,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:36,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:36,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:36,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:36,348 INFO L87 Difference]: Start difference. First operand 384 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:36,522 INFO L93 Difference]: Finished difference Result 619 states and 1807 transitions. [2021-03-11 14:39:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:36,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:36,525 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:39:36,525 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:39:36,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 284.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:39:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 389. [2021-03-11 14:39:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4149484536082473) internal successors, (1325), 388 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1325 transitions. [2021-03-11 14:39:36,531 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1325 transitions. Word has length 22 [2021-03-11 14:39:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:36,531 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1325 transitions. [2021-03-11 14:39:36,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1325 transitions. [2021-03-11 14:39:36,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:36,532 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:36,532 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:36,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1078 [2021-03-11 14:39:36,532 INFO L428 AbstractCegarLoop]: === Iteration 1080 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:36,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:36,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1159703337, now seen corresponding path program 1074 times [2021-03-11 14:39:36,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:36,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327917730] [2021-03-11 14:39:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:36,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:36,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:36,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:36,564 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:36,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:36,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:36,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:36,651 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:36,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:36,712 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:36,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:36,758 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:36,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:36,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327917730] [2021-03-11 14:39:36,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:36,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:36,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409107534] [2021-03-11 14:39:36,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:36,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:36,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:36,805 INFO L87 Difference]: Start difference. First operand 389 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:36,976 INFO L93 Difference]: Finished difference Result 615 states and 1796 transitions. [2021-03-11 14:39:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:36,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:36,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:36,978 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:39:36,978 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:39:36,978 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 291.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:39:36,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 382. [2021-03-11 14:39:36,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.440944881889764) internal successors, (1311), 381 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1311 transitions. [2021-03-11 14:39:36,984 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1311 transitions. Word has length 22 [2021-03-11 14:39:36,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:36,984 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1311 transitions. [2021-03-11 14:39:36,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1311 transitions. [2021-03-11 14:39:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:36,985 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:36,985 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:36,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1079 [2021-03-11 14:39:36,985 INFO L428 AbstractCegarLoop]: === Iteration 1081 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:36,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1550086957, now seen corresponding path program 1075 times [2021-03-11 14:39:36,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:36,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268796570] [2021-03-11 14:39:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:36,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:36,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:36,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:37,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:37,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:37,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:37,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:37,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:37,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:37,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:37,119 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:37,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:37,164 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:37,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:37,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:37,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268796570] [2021-03-11 14:39:37,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:37,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:37,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710475637] [2021-03-11 14:39:37,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:37,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:37,208 INFO L87 Difference]: Start difference. First operand 382 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:37,372 INFO L93 Difference]: Finished difference Result 638 states and 1860 transitions. [2021-03-11 14:39:37,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:37,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:37,374 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:39:37,374 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:39:37,374 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 257.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:39:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 392. [2021-03-11 14:39:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.421994884910486) internal successors, (1338), 391 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1338 transitions. [2021-03-11 14:39:37,380 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1338 transitions. Word has length 22 [2021-03-11 14:39:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:37,380 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1338 transitions. [2021-03-11 14:39:37,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1338 transitions. [2021-03-11 14:39:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:37,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:37,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:37,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1080 [2021-03-11 14:39:37,381 INFO L428 AbstractCegarLoop]: === Iteration 1082 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:37,381 INFO L82 PathProgramCache]: Analyzing trace with hash 58228225, now seen corresponding path program 1076 times [2021-03-11 14:39:37,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:37,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000721672] [2021-03-11 14:39:37,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:37,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:37,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:37,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:37,415 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:37,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:37,444 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:37,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:37,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:37,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:37,501 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:37,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:37,548 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:37,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:37,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000721672] [2021-03-11 14:39:37,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:37,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:37,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277347985] [2021-03-11 14:39:37,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:37,592 INFO L87 Difference]: Start difference. First operand 392 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:37,787 INFO L93 Difference]: Finished difference Result 636 states and 1852 transitions. [2021-03-11 14:39:37,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:37,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:37,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:37,789 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:39:37,789 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:39:37,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:37,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:39:37,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 388. [2021-03-11 14:39:37,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4289405684754524) internal successors, (1327), 387 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1327 transitions. [2021-03-11 14:39:37,795 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1327 transitions. Word has length 22 [2021-03-11 14:39:37,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:37,795 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1327 transitions. [2021-03-11 14:39:37,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:37,795 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1327 transitions. [2021-03-11 14:39:37,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:37,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:37,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:37,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1081 [2021-03-11 14:39:37,796 INFO L428 AbstractCegarLoop]: === Iteration 1083 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash -455995369, now seen corresponding path program 1077 times [2021-03-11 14:39:37,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:37,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816762768] [2021-03-11 14:39:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:37,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:37,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:37,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:37,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:37,828 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:37,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:37,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:37,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:37,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:37,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:37,936 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:37,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:37,989 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:37,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:38,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816762768] [2021-03-11 14:39:38,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:38,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:38,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521122256] [2021-03-11 14:39:38,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:38,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:38,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:38,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:38,031 INFO L87 Difference]: Start difference. First operand 388 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:38,207 INFO L93 Difference]: Finished difference Result 638 states and 1852 transitions. [2021-03-11 14:39:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:38,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:38,210 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:39:38,210 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:39:38,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 284.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:39:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 396. [2021-03-11 14:39:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.3949367088607594) internal successors, (1341), 395 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1341 transitions. [2021-03-11 14:39:38,216 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1341 transitions. Word has length 22 [2021-03-11 14:39:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:38,216 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1341 transitions. [2021-03-11 14:39:38,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1341 transitions. [2021-03-11 14:39:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:38,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:38,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:38,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1082 [2021-03-11 14:39:38,217 INFO L428 AbstractCegarLoop]: === Iteration 1084 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:38,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 79234433, now seen corresponding path program 1078 times [2021-03-11 14:39:38,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:38,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892052152] [2021-03-11 14:39:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:38,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:38,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:38,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:38,249 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:38,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:38,285 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:38,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:38,308 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:38,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:38,337 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:38,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:38,373 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:38,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:38,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892052152] [2021-03-11 14:39:38,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:38,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:38,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714846739] [2021-03-11 14:39:38,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:38,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:38,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:38,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:38,407 INFO L87 Difference]: Start difference. First operand 396 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:38,548 INFO L93 Difference]: Finished difference Result 640 states and 1849 transitions. [2021-03-11 14:39:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:38,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:38,551 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:39:38,551 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:39:38,551 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 209.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:39:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 388. [2021-03-11 14:39:38,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.41343669250646) internal successors, (1321), 387 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1321 transitions. [2021-03-11 14:39:38,557 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1321 transitions. Word has length 22 [2021-03-11 14:39:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:38,557 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1321 transitions. [2021-03-11 14:39:38,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1321 transitions. [2021-03-11 14:39:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:38,558 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:38,558 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:38,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1083 [2021-03-11 14:39:38,558 INFO L428 AbstractCegarLoop]: === Iteration 1085 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:38,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash -529517097, now seen corresponding path program 1079 times [2021-03-11 14:39:38,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:38,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835362279] [2021-03-11 14:39:38,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:38,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:38,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:38,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:38,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:38,589 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:38,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:38,629 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:38,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:38,658 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:38,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:38,716 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:38,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:38,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:38,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:38,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835362279] [2021-03-11 14:39:38,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:38,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:38,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54018545] [2021-03-11 14:39:38,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:38,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:38,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:38,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:38,805 INFO L87 Difference]: Start difference. First operand 388 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:39,029 INFO L93 Difference]: Finished difference Result 631 states and 1831 transitions. [2021-03-11 14:39:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:39,030 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:39,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:39,031 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:39:39,031 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:39:39,031 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 304.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:39:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 393. [2021-03-11 14:39:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.392857142857143) internal successors, (1330), 392 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1330 transitions. [2021-03-11 14:39:39,037 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1330 transitions. Word has length 22 [2021-03-11 14:39:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:39,037 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1330 transitions. [2021-03-11 14:39:39,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1330 transitions. [2021-03-11 14:39:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:39,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:39,038 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:39,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1084 [2021-03-11 14:39:39,038 INFO L428 AbstractCegarLoop]: === Iteration 1086 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:39,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1602602477, now seen corresponding path program 1080 times [2021-03-11 14:39:39,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:39,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985540594] [2021-03-11 14:39:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:39,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:39,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:39,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:39,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:39,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:39,107 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:39,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:39,136 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:39,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:39,195 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:39,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:39,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:39,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985540594] [2021-03-11 14:39:39,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:39,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:39,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167354952] [2021-03-11 14:39:39,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:39,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:39,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:39,286 INFO L87 Difference]: Start difference. First operand 393 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:39,442 INFO L93 Difference]: Finished difference Result 627 states and 1820 transitions. [2021-03-11 14:39:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:39,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:39,444 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:39:39,444 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:39:39,444 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 257.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:39,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:39:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 376. [2021-03-11 14:39:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.461333333333333) internal successors, (1298), 375 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1298 transitions. [2021-03-11 14:39:39,450 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1298 transitions. Word has length 22 [2021-03-11 14:39:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:39,450 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1298 transitions. [2021-03-11 14:39:39,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1298 transitions. [2021-03-11 14:39:39,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:39,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:39,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:39,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1085 [2021-03-11 14:39:39,450 INFO L428 AbstractCegarLoop]: === Iteration 1087 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:39,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:39,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1223421003, now seen corresponding path program 1081 times [2021-03-11 14:39:39,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:39,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528704290] [2021-03-11 14:39:39,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:39,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:39,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:39,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:39,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:39,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:39,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:39,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:39,528 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:39,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:39,557 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:39,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:39,600 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:39,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:39,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528704290] [2021-03-11 14:39:39,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:39,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:39,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546879919] [2021-03-11 14:39:39,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:39,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:39,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:39,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:39,644 INFO L87 Difference]: Start difference. First operand 376 states and 1298 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:39,852 INFO L93 Difference]: Finished difference Result 533 states and 1596 transitions. [2021-03-11 14:39:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:39,854 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:39,855 INFO L225 Difference]: With dead ends: 533 [2021-03-11 14:39:39,855 INFO L226 Difference]: Without dead ends: 522 [2021-03-11 14:39:39,855 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 250.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-03-11 14:39:39,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 380. [2021-03-11 14:39:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:39:39,861 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:39:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:39,861 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:39:39,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:39,861 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:39:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:39,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:39,862 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:39,862 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1086 [2021-03-11 14:39:39,862 INFO L428 AbstractCegarLoop]: === Iteration 1088 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:39,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1377913145, now seen corresponding path program 1082 times [2021-03-11 14:39:39,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:39,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244264822] [2021-03-11 14:39:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:39,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:39,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:39,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:39,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:39,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:39,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:39,932 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:39,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:39,969 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:39,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:40,007 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:40,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:40,054 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:40,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:40,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244264822] [2021-03-11 14:39:40,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:40,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:40,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831077892] [2021-03-11 14:39:40,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:40,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:40,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:40,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:40,099 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:40,236 INFO L93 Difference]: Finished difference Result 531 states and 1591 transitions. [2021-03-11 14:39:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:40,239 INFO L225 Difference]: With dead ends: 531 [2021-03-11 14:39:40,239 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:39:40,239 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 255.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:40,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:39:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 379. [2021-03-11 14:39:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.462962962962963) internal successors, (1309), 378 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1309 transitions. [2021-03-11 14:39:40,245 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1309 transitions. Word has length 22 [2021-03-11 14:39:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:40,245 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1309 transitions. [2021-03-11 14:39:40,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,245 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1309 transitions. [2021-03-11 14:39:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:40,245 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:40,245 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:40,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1087 [2021-03-11 14:39:40,245 INFO L428 AbstractCegarLoop]: === Iteration 1089 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash -377016851, now seen corresponding path program 1083 times [2021-03-11 14:39:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:40,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038398574] [2021-03-11 14:39:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:40,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:40,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:40,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:40,278 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:40,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:40,318 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:40,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:40,349 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:40,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:40,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:40,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:40,433 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:40,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:40,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:40,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038398574] [2021-03-11 14:39:40,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:40,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:40,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431025356] [2021-03-11 14:39:40,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:40,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:40,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:40,472 INFO L87 Difference]: Start difference. First operand 379 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:40,626 INFO L93 Difference]: Finished difference Result 535 states and 1600 transitions. [2021-03-11 14:39:40,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:40,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:40,628 INFO L225 Difference]: With dead ends: 535 [2021-03-11 14:39:40,628 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:39:40,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 260.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:39:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 381. [2021-03-11 14:39:40,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:39:40,634 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:39:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:40,634 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:39:40,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:39:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:40,634 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:40,634 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:40,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1088 [2021-03-11 14:39:40,635 INFO L428 AbstractCegarLoop]: === Iteration 1090 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:40,635 INFO L82 PathProgramCache]: Analyzing trace with hash -879558403, now seen corresponding path program 1084 times [2021-03-11 14:39:40,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:40,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764880865] [2021-03-11 14:39:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:40,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:40,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:40,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:40,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:40,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:40,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:40,706 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:40,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:40,736 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:40,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:40,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:40,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:40,820 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:40,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764880865] [2021-03-11 14:39:40,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:40,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:40,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386151540] [2021-03-11 14:39:40,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:40,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:40,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:40,864 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:41,035 INFO L93 Difference]: Finished difference Result 534 states and 1596 transitions. [2021-03-11 14:39:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:41,037 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:41,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:41,038 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:39:41,038 INFO L226 Difference]: Without dead ends: 522 [2021-03-11 14:39:41,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 281.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-03-11 14:39:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 379. [2021-03-11 14:39:41,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4603174603174605) internal successors, (1308), 378 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1308 transitions. [2021-03-11 14:39:41,044 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:41,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:41,044 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1308 transitions. [2021-03-11 14:39:41,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1308 transitions. [2021-03-11 14:39:41,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:41,045 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:41,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:41,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1089 [2021-03-11 14:39:41,045 INFO L428 AbstractCegarLoop]: === Iteration 1091 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:41,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1822962563, now seen corresponding path program 1085 times [2021-03-11 14:39:41,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:41,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141102404] [2021-03-11 14:39:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:41,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:41,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:41,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:41,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:41,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:41,118 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:41,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:41,149 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:41,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:41,192 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:41,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:41,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:41,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:41,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141102404] [2021-03-11 14:39:41,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:41,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:41,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447830788] [2021-03-11 14:39:41,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:41,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:41,287 INFO L87 Difference]: Start difference. First operand 379 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:41,463 INFO L93 Difference]: Finished difference Result 530 states and 1588 transitions. [2021-03-11 14:39:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:41,465 INFO L225 Difference]: With dead ends: 530 [2021-03-11 14:39:41,465 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:39:41,466 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 259.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:39:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 380. [2021-03-11 14:39:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:39:41,471 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:39:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:41,471 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:39:41,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,472 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:39:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:41,472 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:41,472 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:41,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1090 [2021-03-11 14:39:41,472 INFO L428 AbstractCegarLoop]: === Iteration 1092 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:41,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:41,472 INFO L82 PathProgramCache]: Analyzing trace with hash -212021605, now seen corresponding path program 1086 times [2021-03-11 14:39:41,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:41,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868296681] [2021-03-11 14:39:41,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:41,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:41,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:41,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:41,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:41,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:41,547 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:41,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:41,578 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:41,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:41,618 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:41,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:41,665 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:41,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:41,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868296681] [2021-03-11 14:39:41,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:41,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:41,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255046474] [2021-03-11 14:39:41,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:41,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:41,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:41,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:41,710 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:41,903 INFO L93 Difference]: Finished difference Result 531 states and 1589 transitions. [2021-03-11 14:39:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:41,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:41,905 INFO L225 Difference]: With dead ends: 531 [2021-03-11 14:39:41,905 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:39:41,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:39:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 378. [2021-03-11 14:39:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4641909814323606) internal successors, (1306), 377 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1306 transitions. [2021-03-11 14:39:41,910 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1306 transitions. Word has length 22 [2021-03-11 14:39:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:41,910 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1306 transitions. [2021-03-11 14:39:41,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1306 transitions. [2021-03-11 14:39:41,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:41,911 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:41,911 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:41,911 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1091 [2021-03-11 14:39:41,911 INFO L428 AbstractCegarLoop]: === Iteration 1093 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:41,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:41,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1145512215, now seen corresponding path program 1087 times [2021-03-11 14:39:41,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:41,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152012099] [2021-03-11 14:39:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:41,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:41,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:41,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:41,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:41,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:41,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:41,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:41,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:42,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:42,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:42,055 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:42,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:42,104 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:42,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:42,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152012099] [2021-03-11 14:39:42,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:42,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:42,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045253928] [2021-03-11 14:39:42,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:42,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:42,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:42,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:42,149 INFO L87 Difference]: Start difference. First operand 378 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:42,340 INFO L93 Difference]: Finished difference Result 538 states and 1606 transitions. [2021-03-11 14:39:42,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:42,342 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:42,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:42,343 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:39:42,343 INFO L226 Difference]: Without dead ends: 527 [2021-03-11 14:39:42,343 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 292.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-03-11 14:39:42,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 380. [2021-03-11 14:39:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4564643799472297) internal successors, (1310), 379 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1310 transitions. [2021-03-11 14:39:42,349 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1310 transitions. Word has length 22 [2021-03-11 14:39:42,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:42,349 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1310 transitions. [2021-03-11 14:39:42,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,349 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1310 transitions. [2021-03-11 14:39:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:42,349 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:42,349 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:42,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1092 [2021-03-11 14:39:42,349 INFO L428 AbstractCegarLoop]: === Iteration 1094 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:42,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:42,349 INFO L82 PathProgramCache]: Analyzing trace with hash -991020073, now seen corresponding path program 1088 times [2021-03-11 14:39:42,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:42,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225972431] [2021-03-11 14:39:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:42,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:42,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:42,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:42,384 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:42,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:42,423 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:42,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:42,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:42,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:42,517 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:42,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:42,567 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:42,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:42,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225972431] [2021-03-11 14:39:42,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:42,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:42,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698079696] [2021-03-11 14:39:42,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:42,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:42,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:42,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:42,612 INFO L87 Difference]: Start difference. First operand 380 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:42,804 INFO L93 Difference]: Finished difference Result 536 states and 1601 transitions. [2021-03-11 14:39:42,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:42,806 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:42,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:42,807 INFO L225 Difference]: With dead ends: 536 [2021-03-11 14:39:42,807 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:39:42,807 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 285.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:39:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 379. [2021-03-11 14:39:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4603174603174605) internal successors, (1308), 378 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1308 transitions. [2021-03-11 14:39:42,813 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:42,813 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1308 transitions. [2021-03-11 14:39:42,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1308 transitions. [2021-03-11 14:39:42,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:42,813 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:42,813 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:42,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1093 [2021-03-11 14:39:42,814 INFO L428 AbstractCegarLoop]: === Iteration 1095 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:42,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:42,814 INFO L82 PathProgramCache]: Analyzing trace with hash -51420627, now seen corresponding path program 1089 times [2021-03-11 14:39:42,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:42,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208266950] [2021-03-11 14:39:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:42,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:42,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:42,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:42,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:42,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:42,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:42,894 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:42,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:42,950 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:42,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:43,015 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:43,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:43,063 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:43,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:43,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208266950] [2021-03-11 14:39:43,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:43,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:43,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200551906] [2021-03-11 14:39:43,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:43,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:43,100 INFO L87 Difference]: Start difference. First operand 379 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:43,255 INFO L93 Difference]: Finished difference Result 545 states and 1621 transitions. [2021-03-11 14:39:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:43,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:43,257 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:39:43,257 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:39:43,257 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 319.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:43,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:39:43,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 382. [2021-03-11 14:39:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4461942257217846) internal successors, (1313), 381 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1313 transitions. [2021-03-11 14:39:43,262 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1313 transitions. Word has length 22 [2021-03-11 14:39:43,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:43,262 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1313 transitions. [2021-03-11 14:39:43,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,263 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1313 transitions. [2021-03-11 14:39:43,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:43,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:43,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:43,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1094 [2021-03-11 14:39:43,263 INFO L428 AbstractCegarLoop]: === Iteration 1096 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1103231849, now seen corresponding path program 1090 times [2021-03-11 14:39:43,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:43,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820114187] [2021-03-11 14:39:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:43,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:43,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:43,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:43,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:43,334 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:43,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:43,382 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:43,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:43,444 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:43,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:43,489 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:43,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:43,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820114187] [2021-03-11 14:39:43,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:43,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:43,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223475166] [2021-03-11 14:39:43,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:43,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:43,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:43,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:43,533 INFO L87 Difference]: Start difference. First operand 382 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:43,747 INFO L93 Difference]: Finished difference Result 548 states and 1624 transitions. [2021-03-11 14:39:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:43,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:43,749 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:39:43,749 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:39:43,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 321.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:43,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:39:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 379. [2021-03-11 14:39:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:39:43,755 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:43,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:43,755 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:39:43,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:39:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:43,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:43,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:43,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1095 [2021-03-11 14:39:43,756 INFO L428 AbstractCegarLoop]: === Iteration 1097 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1497366339, now seen corresponding path program 1091 times [2021-03-11 14:39:43,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:43,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201129054] [2021-03-11 14:39:43,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:43,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:43,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:43,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:43,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:43,788 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:43,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:43,827 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:43,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:43,878 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:43,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:43,933 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:43,981 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:43,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:44,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:44,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201129054] [2021-03-11 14:39:44,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:44,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:44,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703410973] [2021-03-11 14:39:44,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:44,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:44,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:44,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:44,025 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:44,164 INFO L93 Difference]: Finished difference Result 539 states and 1606 transitions. [2021-03-11 14:39:44,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:44,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:44,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:44,167 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:39:44,167 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:39:44,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 287.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:44,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:39:44,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 380. [2021-03-11 14:39:44,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:39:44,175 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:44,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:44,175 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:39:44,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:39:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:44,176 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:44,176 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:44,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1096 [2021-03-11 14:39:44,176 INFO L428 AbstractCegarLoop]: === Iteration 1098 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1724515577, now seen corresponding path program 1092 times [2021-03-11 14:39:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:44,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620299369] [2021-03-11 14:39:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:44,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:44,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:44,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:44,209 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:44,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:44,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:44,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:44,295 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:44,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:44,349 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:44,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:44,393 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:44,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:44,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620299369] [2021-03-11 14:39:44,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:44,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:44,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742302902] [2021-03-11 14:39:44,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:44,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:44,428 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:44,559 INFO L93 Difference]: Finished difference Result 544 states and 1615 transitions. [2021-03-11 14:39:44,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:44,560 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:44,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:44,561 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:39:44,561 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:39:44,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 287.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:39:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 378. [2021-03-11 14:39:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4615384615384617) internal successors, (1305), 377 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1305 transitions. [2021-03-11 14:39:44,567 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1305 transitions. Word has length 22 [2021-03-11 14:39:44,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:44,567 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1305 transitions. [2021-03-11 14:39:44,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:44,567 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1305 transitions. [2021-03-11 14:39:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:44,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:44,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:44,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1097 [2021-03-11 14:39:44,568 INFO L428 AbstractCegarLoop]: === Iteration 1099 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:44,568 INFO L82 PathProgramCache]: Analyzing trace with hash -819915991, now seen corresponding path program 1093 times [2021-03-11 14:39:44,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:44,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43324925] [2021-03-11 14:39:44,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:44,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:44,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:44,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:44,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:44,595 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:44,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:44,638 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:44,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:44,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:44,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:44,737 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:44,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:44,788 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:44,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:44,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43324925] [2021-03-11 14:39:44,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:44,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:44,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326932653] [2021-03-11 14:39:44,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:44,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:44,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:44,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:44,838 INFO L87 Difference]: Start difference. First operand 378 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:45,029 INFO L93 Difference]: Finished difference Result 544 states and 1622 transitions. [2021-03-11 14:39:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:45,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:45,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:45,032 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:39:45,032 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:39:45,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 325.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:39:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 382. [2021-03-11 14:39:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:39:45,038 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:45,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:45,038 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:39:45,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:39:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:45,038 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:45,038 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:45,038 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1098 [2021-03-11 14:39:45,038 INFO L428 AbstractCegarLoop]: === Iteration 1100 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:45,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1322457543, now seen corresponding path program 1094 times [2021-03-11 14:39:45,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:45,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879709272] [2021-03-11 14:39:45,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:45,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:45,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:45,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:45,070 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:45,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:45,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:45,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:45,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:45,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:45,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:45,246 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:45,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:45,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879709272] [2021-03-11 14:39:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:45,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:45,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465554240] [2021-03-11 14:39:45,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:45,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:45,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:45,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:45,291 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:45,500 INFO L93 Difference]: Finished difference Result 543 states and 1618 transitions. [2021-03-11 14:39:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:45,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:45,503 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:39:45,503 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:39:45,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 304.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:39:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 380. [2021-03-11 14:39:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4564643799472297) internal successors, (1310), 379 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1310 transitions. [2021-03-11 14:39:45,508 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1310 transitions. Word has length 22 [2021-03-11 14:39:45,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:45,509 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1310 transitions. [2021-03-11 14:39:45,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,509 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1310 transitions. [2021-03-11 14:39:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:45,509 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:45,509 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:45,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1099 [2021-03-11 14:39:45,509 INFO L428 AbstractCegarLoop]: === Iteration 1101 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1874613451, now seen corresponding path program 1095 times [2021-03-11 14:39:45,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:45,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001056739] [2021-03-11 14:39:45,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:45,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:45,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:45,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:45,543 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:45,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:45,583 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:45,633 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:45,683 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:45,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:45,720 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:45,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:45,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001056739] [2021-03-11 14:39:45,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:45,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:45,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7981372] [2021-03-11 14:39:45,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:45,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:45,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:45,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:45,754 INFO L87 Difference]: Start difference. First operand 380 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:45,926 INFO L93 Difference]: Finished difference Result 549 states and 1631 transitions. [2021-03-11 14:39:45,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:45,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:45,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:45,928 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:39:45,928 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:39:45,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 296.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:39:45,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 383. [2021-03-11 14:39:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4424083769633507) internal successors, (1315), 382 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1315 transitions. [2021-03-11 14:39:45,934 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1315 transitions. Word has length 22 [2021-03-11 14:39:45,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:45,934 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1315 transitions. [2021-03-11 14:39:45,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1315 transitions. [2021-03-11 14:39:45,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:45,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:45,935 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:45,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1100 [2021-03-11 14:39:45,935 INFO L428 AbstractCegarLoop]: === Iteration 1102 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash 822802229, now seen corresponding path program 1096 times [2021-03-11 14:39:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490540600] [2021-03-11 14:39:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:45,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:45,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:45,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:45,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:45,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:45,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:46,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:46,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:46,058 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:46,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:46,122 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:46,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:46,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:46,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:46,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490540600] [2021-03-11 14:39:46,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:46,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:46,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829308916] [2021-03-11 14:39:46,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:46,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:46,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:46,221 INFO L87 Difference]: Start difference. First operand 383 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:46,435 INFO L93 Difference]: Finished difference Result 552 states and 1634 transitions. [2021-03-11 14:39:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:46,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:46,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:46,437 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:39:46,437 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:39:46,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 337.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:46,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:39:46,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 380. [2021-03-11 14:39:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:39:46,443 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:46,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:46,443 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:39:46,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:39:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:46,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:46,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:46,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1101 [2021-03-11 14:39:46,444 INFO L428 AbstractCegarLoop]: === Iteration 1103 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:46,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:46,444 INFO L82 PathProgramCache]: Analyzing trace with hash -178904713, now seen corresponding path program 1097 times [2021-03-11 14:39:46,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:46,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302173048] [2021-03-11 14:39:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:46,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:46,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:46,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:46,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:46,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:46,517 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:46,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:46,569 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:46,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:46,633 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:46,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:46,681 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:46,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302173048] [2021-03-11 14:39:46,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:46,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:46,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428216923] [2021-03-11 14:39:46,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:46,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:46,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:46,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:46,726 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:46,895 INFO L93 Difference]: Finished difference Result 546 states and 1622 transitions. [2021-03-11 14:39:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:46,898 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:39:46,898 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:39:46,898 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 333.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:39:46,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 382. [2021-03-11 14:39:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.440944881889764) internal successors, (1311), 381 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1311 transitions. [2021-03-11 14:39:46,904 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1311 transitions. Word has length 22 [2021-03-11 14:39:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:46,904 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1311 transitions. [2021-03-11 14:39:46,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1311 transitions. [2021-03-11 14:39:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:46,905 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:46,905 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:46,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1102 [2021-03-11 14:39:46,905 INFO L428 AbstractCegarLoop]: === Iteration 1104 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:46,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1871083995, now seen corresponding path program 1098 times [2021-03-11 14:39:46,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:46,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991884329] [2021-03-11 14:39:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:46,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:46,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:46,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:46,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:46,939 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:46,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:46,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:46,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:47,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:47,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:47,062 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:47,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:47,099 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:47,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:47,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991884329] [2021-03-11 14:39:47,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:47,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:47,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592076283] [2021-03-11 14:39:47,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:47,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:47,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:47,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:47,134 INFO L87 Difference]: Start difference. First operand 382 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:47,345 INFO L93 Difference]: Finished difference Result 550 states and 1628 transitions. [2021-03-11 14:39:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:47,347 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:39:47,347 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:39:47,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 282.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:39:47,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 378. [2021-03-11 14:39:47,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4588859416445623) internal successors, (1304), 377 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1304 transitions. [2021-03-11 14:39:47,353 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1304 transitions. Word has length 22 [2021-03-11 14:39:47,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:47,353 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1304 transitions. [2021-03-11 14:39:47,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,353 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1304 transitions. [2021-03-11 14:39:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:47,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:47,354 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:47,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1103 [2021-03-11 14:39:47,354 INFO L428 AbstractCegarLoop]: === Iteration 1105 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:47,354 INFO L82 PathProgramCache]: Analyzing trace with hash -339827625, now seen corresponding path program 1099 times [2021-03-11 14:39:47,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:47,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537735199] [2021-03-11 14:39:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:47,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:47,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:47,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:47,387 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:47,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:47,427 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:47,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:47,484 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:47,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:47,528 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:47,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:47,580 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:47,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:47,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537735199] [2021-03-11 14:39:47,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:47,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:47,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589587827] [2021-03-11 14:39:47,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:47,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:47,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:47,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:47,625 INFO L87 Difference]: Start difference. First operand 378 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:47,779 INFO L93 Difference]: Finished difference Result 533 states and 1593 transitions. [2021-03-11 14:39:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:47,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:47,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:47,781 INFO L225 Difference]: With dead ends: 533 [2021-03-11 14:39:47,781 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:39:47,782 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 289.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:39:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 380. [2021-03-11 14:39:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:39:47,787 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:47,787 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:39:47,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:39:47,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:47,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:47,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:47,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1104 [2021-03-11 14:39:47,788 INFO L428 AbstractCegarLoop]: === Iteration 1106 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:47,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:47,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1271113333, now seen corresponding path program 1100 times [2021-03-11 14:39:47,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:47,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573210986] [2021-03-11 14:39:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:47,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:47,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:47,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:47,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:47,821 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:47,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:47,860 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:47,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:47,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:47,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:47,953 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:47,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:48,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:48,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:48,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573210986] [2021-03-11 14:39:48,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:48,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:48,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055702889] [2021-03-11 14:39:48,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:48,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:48,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:48,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:48,046 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:48,251 INFO L93 Difference]: Finished difference Result 534 states and 1594 transitions. [2021-03-11 14:39:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:48,254 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:39:48,254 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:39:48,254 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 309.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:39:48,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 379. [2021-03-11 14:39:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.455026455026455) internal successors, (1306), 378 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1306 transitions. [2021-03-11 14:39:48,259 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1306 transitions. Word has length 22 [2021-03-11 14:39:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:48,259 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1306 transitions. [2021-03-11 14:39:48,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1306 transitions. [2021-03-11 14:39:48,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:48,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:48,260 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:48,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1105 [2021-03-11 14:39:48,260 INFO L428 AbstractCegarLoop]: === Iteration 1107 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:48,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:48,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1940265479, now seen corresponding path program 1101 times [2021-03-11 14:39:48,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:48,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332425839] [2021-03-11 14:39:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:48,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:48,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:48,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:48,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:48,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:48,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:48,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:48,375 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:48,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:48,418 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:48,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:48,457 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:48,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:48,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332425839] [2021-03-11 14:39:48,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:48,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:48,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956503526] [2021-03-11 14:39:48,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:48,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:48,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:48,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:48,492 INFO L87 Difference]: Start difference. First operand 379 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:48,666 INFO L93 Difference]: Finished difference Result 537 states and 1600 transitions. [2021-03-11 14:39:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:48,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:48,669 INFO L225 Difference]: With dead ends: 537 [2021-03-11 14:39:48,669 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:39:48,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:39:48,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 380. [2021-03-11 14:39:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:39:48,675 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:48,675 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:39:48,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:39:48,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:48,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:48,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:48,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106 [2021-03-11 14:39:48,675 INFO L428 AbstractCegarLoop]: === Iteration 1108 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:48,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:48,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1281616437, now seen corresponding path program 1102 times [2021-03-11 14:39:48,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:48,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695400437] [2021-03-11 14:39:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:48,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:48,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:48,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:48,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:48,709 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:48,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:48,750 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:48,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:48,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:48,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:48,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:48,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:48,906 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:48,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:48,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695400437] [2021-03-11 14:39:48,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:48,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:48,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368669898] [2021-03-11 14:39:48,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:48,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:48,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:48,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:48,955 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:49,179 INFO L93 Difference]: Finished difference Result 542 states and 1609 transitions. [2021-03-11 14:39:49,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:49,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:49,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:49,182 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:39:49,182 INFO L226 Difference]: Without dead ends: 527 [2021-03-11 14:39:49,182 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 329.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:49,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-03-11 14:39:49,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 379. [2021-03-11 14:39:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4523809523809526) internal successors, (1305), 378 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1305 transitions. [2021-03-11 14:39:49,188 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1305 transitions. Word has length 22 [2021-03-11 14:39:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:49,188 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1305 transitions. [2021-03-11 14:39:49,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,188 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1305 transitions. [2021-03-11 14:39:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:49,188 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:49,188 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:49,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1107 [2021-03-11 14:39:49,188 INFO L428 AbstractCegarLoop]: === Iteration 1109 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1929762375, now seen corresponding path program 1103 times [2021-03-11 14:39:49,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:49,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348541816] [2021-03-11 14:39:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:49,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:49,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:49,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:49,221 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:49,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:49,261 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:49,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:49,313 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:49,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:49,377 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:49,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:49,424 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:49,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:49,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348541816] [2021-03-11 14:39:49,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:49,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:49,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796754385] [2021-03-11 14:39:49,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:49,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:49,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:49,459 INFO L87 Difference]: Start difference. First operand 379 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:49,625 INFO L93 Difference]: Finished difference Result 540 states and 1606 transitions. [2021-03-11 14:39:49,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:49,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:49,628 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:39:49,628 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:39:49,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 311.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:39:49,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 381. [2021-03-11 14:39:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.442105263157895) internal successors, (1308), 380 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1308 transitions. [2021-03-11 14:39:49,634 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:49,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:49,634 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1308 transitions. [2021-03-11 14:39:49,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1308 transitions. [2021-03-11 14:39:49,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:49,635 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:49,635 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:49,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1108 [2021-03-11 14:39:49,635 INFO L428 AbstractCegarLoop]: === Iteration 1110 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:49,635 INFO L82 PathProgramCache]: Analyzing trace with hash -318821417, now seen corresponding path program 1104 times [2021-03-11 14:39:49,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:49,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946981094] [2021-03-11 14:39:49,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:49,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:49,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:49,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:49,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:49,675 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:39:49,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:39:49,714 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:49,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:49,766 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:39:49,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:39:49,831 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:49,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:49,880 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:49,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:49,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946981094] [2021-03-11 14:39:49,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:49,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:49,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315200594] [2021-03-11 14:39:49,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:49,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:49,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:49,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:49,929 INFO L87 Difference]: Start difference. First operand 381 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:50,150 INFO L93 Difference]: Finished difference Result 544 states and 1612 transitions. [2021-03-11 14:39:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:50,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:50,152 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:39:50,152 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:39:50,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:50,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:39:50,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 377. [2021-03-11 14:39:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4627659574468086) internal successors, (1302), 376 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1302 transitions. [2021-03-11 14:39:50,158 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1302 transitions. Word has length 22 [2021-03-11 14:39:50,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:50,158 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1302 transitions. [2021-03-11 14:39:50,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1302 transitions. [2021-03-11 14:39:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:50,159 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:50,159 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:50,159 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1109 [2021-03-11 14:39:50,159 INFO L428 AbstractCegarLoop]: === Iteration 1111 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:50,159 INFO L82 PathProgramCache]: Analyzing trace with hash -114146211, now seen corresponding path program 1105 times [2021-03-11 14:39:50,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:50,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530977434] [2021-03-11 14:39:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:50,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:50,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:50,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:50,192 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:50,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:50,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:50,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:50,249 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:50,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:50,288 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:50,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:50,335 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:50,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:50,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530977434] [2021-03-11 14:39:50,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:50,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:50,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166310537] [2021-03-11 14:39:50,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:50,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:50,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:50,381 INFO L87 Difference]: Start difference. First operand 377 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:50,580 INFO L93 Difference]: Finished difference Result 530 states and 1588 transitions. [2021-03-11 14:39:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:50,582 INFO L225 Difference]: With dead ends: 530 [2021-03-11 14:39:50,582 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:39:50,583 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 261.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:39:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 380. [2021-03-11 14:39:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4564643799472297) internal successors, (1310), 379 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1310 transitions. [2021-03-11 14:39:50,588 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1310 transitions. Word has length 22 [2021-03-11 14:39:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:50,588 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1310 transitions. [2021-03-11 14:39:50,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1310 transitions. [2021-03-11 14:39:50,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:50,589 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:50,589 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:50,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1110 [2021-03-11 14:39:50,589 INFO L428 AbstractCegarLoop]: === Iteration 1112 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash 40345931, now seen corresponding path program 1106 times [2021-03-11 14:39:50,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:50,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089686015] [2021-03-11 14:39:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:50,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:50,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:50,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:50,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:50,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:50,634 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:50,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:50,658 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:50,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:50,687 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:50,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:50,732 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:50,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:50,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089686015] [2021-03-11 14:39:50,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:50,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:50,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634554] [2021-03-11 14:39:50,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:50,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:50,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:50,782 INFO L87 Difference]: Start difference. First operand 380 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:50,974 INFO L93 Difference]: Finished difference Result 528 states and 1583 transitions. [2021-03-11 14:39:50,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:50,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:50,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:50,977 INFO L225 Difference]: With dead ends: 528 [2021-03-11 14:39:50,977 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:39:50,977 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 214.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:50,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:39:50,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 379. [2021-03-11 14:39:50,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4603174603174605) internal successors, (1308), 378 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1308 transitions. [2021-03-11 14:39:50,983 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:50,983 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1308 transitions. [2021-03-11 14:39:50,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:50,983 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1308 transitions. [2021-03-11 14:39:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:50,983 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:50,983 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:50,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1111 [2021-03-11 14:39:50,983 INFO L428 AbstractCegarLoop]: === Iteration 1113 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:50,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:50,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1714584065, now seen corresponding path program 1107 times [2021-03-11 14:39:50,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:50,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739595987] [2021-03-11 14:39:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:50,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:50,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:50,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:51,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:51,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:51,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:51,042 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:51,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:51,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:51,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:51,110 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:51,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:51,158 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:51,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:51,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739595987] [2021-03-11 14:39:51,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:51,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:51,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62947492] [2021-03-11 14:39:51,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:51,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:51,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:51,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:51,204 INFO L87 Difference]: Start difference. First operand 379 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:51,416 INFO L93 Difference]: Finished difference Result 532 states and 1592 transitions. [2021-03-11 14:39:51,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:51,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:51,419 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:39:51,419 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:39:51,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 272.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:51,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:39:51,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 381. [2021-03-11 14:39:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.45) internal successors, (1311), 380 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1311 transitions. [2021-03-11 14:39:51,425 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1311 transitions. Word has length 22 [2021-03-11 14:39:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:51,425 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1311 transitions. [2021-03-11 14:39:51,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,425 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1311 transitions. [2021-03-11 14:39:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:51,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:51,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:51,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1112 [2021-03-11 14:39:51,425 INFO L428 AbstractCegarLoop]: === Iteration 1114 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:51,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2077841679, now seen corresponding path program 1108 times [2021-03-11 14:39:51,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:51,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219676289] [2021-03-11 14:39:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:51,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:51,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:51,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:51,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:51,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:51,482 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:51,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:51,514 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:51,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:51,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:51,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:51,608 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:51,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:51,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219676289] [2021-03-11 14:39:51,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:51,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:51,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040808858] [2021-03-11 14:39:51,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:51,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:51,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:51,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:51,661 INFO L87 Difference]: Start difference. First operand 381 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:51,885 INFO L93 Difference]: Finished difference Result 531 states and 1588 transitions. [2021-03-11 14:39:51,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:51,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:51,888 INFO L225 Difference]: With dead ends: 531 [2021-03-11 14:39:51,888 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:39:51,888 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 286.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:39:51,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 379. [2021-03-11 14:39:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:39:51,893 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:51,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:51,893 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:39:51,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:51,894 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:39:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:51,894 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:51,894 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:51,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1113 [2021-03-11 14:39:51,894 INFO L428 AbstractCegarLoop]: === Iteration 1115 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1134437519, now seen corresponding path program 1109 times [2021-03-11 14:39:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:51,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423824285] [2021-03-11 14:39:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:51,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:51,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:51,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:51,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:51,928 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:51,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:51,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:51,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:51,983 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:51,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:52,024 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:52,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:52,073 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:52,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:52,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423824285] [2021-03-11 14:39:52,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:52,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:52,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872056428] [2021-03-11 14:39:52,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:52,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:52,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:52,119 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:52,297 INFO L93 Difference]: Finished difference Result 527 states and 1580 transitions. [2021-03-11 14:39:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:52,300 INFO L225 Difference]: With dead ends: 527 [2021-03-11 14:39:52,300 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:39:52,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 244.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:39:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 380. [2021-03-11 14:39:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:39:52,306 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:39:52,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:52,306 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:39:52,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,306 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:39:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:52,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:52,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:52,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1114 [2021-03-11 14:39:52,306 INFO L428 AbstractCegarLoop]: === Iteration 1116 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:52,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:52,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1549588819, now seen corresponding path program 1110 times [2021-03-11 14:39:52,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:52,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082345672] [2021-03-11 14:39:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:52,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:52,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:52,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:52,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:52,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:52,365 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:39:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:39:52,397 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:52,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:52,438 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:52,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:52,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:52,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:52,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082345672] [2021-03-11 14:39:52,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:52,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:52,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002288376] [2021-03-11 14:39:52,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:52,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:52,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:52,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:52,533 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:52,705 INFO L93 Difference]: Finished difference Result 528 states and 1581 transitions. [2021-03-11 14:39:52,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:52,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:52,708 INFO L225 Difference]: With dead ends: 528 [2021-03-11 14:39:52,708 INFO L226 Difference]: Without dead ends: 516 [2021-03-11 14:39:52,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 282.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-03-11 14:39:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 378. [2021-03-11 14:39:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4615384615384617) internal successors, (1305), 377 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1305 transitions. [2021-03-11 14:39:52,714 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1305 transitions. Word has length 22 [2021-03-11 14:39:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:52,714 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1305 transitions. [2021-03-11 14:39:52,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1305 transitions. [2021-03-11 14:39:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:52,714 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:52,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:52,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1115 [2021-03-11 14:39:52,714 INFO L428 AbstractCegarLoop]: === Iteration 1117 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1214551209, now seen corresponding path program 1111 times [2021-03-11 14:39:52,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:52,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040179734] [2021-03-11 14:39:52,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:52,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:52,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:52,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:52,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:52,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:52,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:52,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:52,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:52,802 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:52,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:52,842 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:52,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:52,890 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:52,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:52,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040179734] [2021-03-11 14:39:52,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:52,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:52,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724543612] [2021-03-11 14:39:52,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:52,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:52,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:52,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:52,936 INFO L87 Difference]: Start difference. First operand 378 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:53,094 INFO L93 Difference]: Finished difference Result 532 states and 1592 transitions. [2021-03-11 14:39:53,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:53,096 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:53,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:53,097 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:39:53,097 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:39:53,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 274.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:53,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:39:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 380. [2021-03-11 14:39:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:39:53,103 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:39:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:53,103 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:39:53,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:39:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:53,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:53,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:53,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1116 [2021-03-11 14:39:53,103 INFO L428 AbstractCegarLoop]: === Iteration 1118 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1369043351, now seen corresponding path program 1112 times [2021-03-11 14:39:53,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:53,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562433073] [2021-03-11 14:39:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:53,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:53,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:53,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:53,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:53,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:53,161 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:53,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:53,186 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:53,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:53,216 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:53,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:53,254 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:53,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562433073] [2021-03-11 14:39:53,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:53,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:53,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027222461] [2021-03-11 14:39:53,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:53,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:53,290 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:53,394 INFO L93 Difference]: Finished difference Result 530 states and 1587 transitions. [2021-03-11 14:39:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:53,396 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:53,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:53,397 INFO L225 Difference]: With dead ends: 530 [2021-03-11 14:39:53,397 INFO L226 Difference]: Without dead ends: 520 [2021-03-11 14:39:53,397 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 201.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-03-11 14:39:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 379. [2021-03-11 14:39:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:39:53,403 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:53,403 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:39:53,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:39:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:53,404 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:53,404 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:53,404 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1117 [2021-03-11 14:39:53,404 INFO L428 AbstractCegarLoop]: === Iteration 1119 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:53,404 INFO L82 PathProgramCache]: Analyzing trace with hash 626805887, now seen corresponding path program 1113 times [2021-03-11 14:39:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:53,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464935322] [2021-03-11 14:39:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:53,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:53,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:53,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:53,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:53,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:53,459 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:53,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:53,490 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:53,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:53,530 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:53,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:53,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:53,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:53,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464935322] [2021-03-11 14:39:53,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:53,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:53,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492889305] [2021-03-11 14:39:53,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:53,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:53,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:53,624 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:53,787 INFO L93 Difference]: Finished difference Result 534 states and 1598 transitions. [2021-03-11 14:39:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:53,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:53,790 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:39:53,790 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:39:53,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 277.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:39:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 382. [2021-03-11 14:39:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4435695538057742) internal successors, (1312), 381 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1312 transitions. [2021-03-11 14:39:53,796 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1312 transitions. Word has length 22 [2021-03-11 14:39:53,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:53,796 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1312 transitions. [2021-03-11 14:39:53,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1312 transitions. [2021-03-11 14:39:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:53,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:53,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:53,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1118 [2021-03-11 14:39:53,796 INFO L428 AbstractCegarLoop]: === Iteration 1120 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1426819625, now seen corresponding path program 1114 times [2021-03-11 14:39:53,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:53,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64049734] [2021-03-11 14:39:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:53,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:53,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:53,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:53,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:53,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:53,853 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:53,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:53,884 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:53,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:53,925 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:53,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:53,974 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:53,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:54,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64049734] [2021-03-11 14:39:54,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:54,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:54,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373908199] [2021-03-11 14:39:54,020 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:54,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:54,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:54,020 INFO L87 Difference]: Start difference. First operand 382 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:54,186 INFO L93 Difference]: Finished difference Result 526 states and 1589 transitions. [2021-03-11 14:39:54,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:54,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:54,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:54,189 INFO L225 Difference]: With dead ends: 526 [2021-03-11 14:39:54,189 INFO L226 Difference]: Without dead ends: 511 [2021-03-11 14:39:54,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 276.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-03-11 14:39:54,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 379. [2021-03-11 14:39:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.455026455026455) internal successors, (1306), 378 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1306 transitions. [2021-03-11 14:39:54,195 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1306 transitions. Word has length 22 [2021-03-11 14:39:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:54,195 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1306 transitions. [2021-03-11 14:39:54,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1306 transitions. [2021-03-11 14:39:54,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:54,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:54,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:54,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1119 [2021-03-11 14:39:54,195 INFO L428 AbstractCegarLoop]: === Iteration 1121 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -819139825, now seen corresponding path program 1115 times [2021-03-11 14:39:54,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:54,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606245962] [2021-03-11 14:39:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:54,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:54,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:54,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:54,230 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:54,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:54,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:54,287 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:54,353 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:54,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:54,404 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:54,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:54,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:54,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606245962] [2021-03-11 14:39:54,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:54,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:54,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181828394] [2021-03-11 14:39:54,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:54,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:54,451 INFO L87 Difference]: Start difference. First operand 379 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:54,572 INFO L93 Difference]: Finished difference Result 530 states and 1587 transitions. [2021-03-11 14:39:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:54,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:54,574 INFO L225 Difference]: With dead ends: 530 [2021-03-11 14:39:54,574 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:39:54,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 266.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:39:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 380. [2021-03-11 14:39:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:39:54,580 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:54,580 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:39:54,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:39:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:54,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:54,580 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:54,581 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1120 [2021-03-11 14:39:54,581 INFO L428 AbstractCegarLoop]: === Iteration 1122 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:54,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:54,581 INFO L82 PathProgramCache]: Analyzing trace with hash -283910023, now seen corresponding path program 1116 times [2021-03-11 14:39:54,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:54,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86333352] [2021-03-11 14:39:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:54,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:54,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:54,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:54,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:54,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:54,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:54,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:54,653 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:54,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:54,704 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:54,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:54,744 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:54,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:54,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86333352] [2021-03-11 14:39:54,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:54,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:54,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125225963] [2021-03-11 14:39:54,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:54,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:54,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:54,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:54,790 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:54,945 INFO L93 Difference]: Finished difference Result 524 states and 1584 transitions. [2021-03-11 14:39:54,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:54,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:54,948 INFO L225 Difference]: With dead ends: 524 [2021-03-11 14:39:54,948 INFO L226 Difference]: Without dead ends: 510 [2021-03-11 14:39:54,948 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 265.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-03-11 14:39:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 378. [2021-03-11 14:39:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4588859416445623) internal successors, (1304), 377 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1304 transitions. [2021-03-11 14:39:54,954 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1304 transitions. Word has length 22 [2021-03-11 14:39:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:54,954 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1304 transitions. [2021-03-11 14:39:54,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1304 transitions. [2021-03-11 14:39:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:54,954 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:54,954 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:54,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1121 [2021-03-11 14:39:54,955 INFO L428 AbstractCegarLoop]: === Iteration 1123 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1540147433, now seen corresponding path program 1117 times [2021-03-11 14:39:54,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:54,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431657893] [2021-03-11 14:39:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:54,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:54,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:54,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:54,989 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:54,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:55,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:55,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:55,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:55,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:55,083 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:55,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:55,133 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:55,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:55,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431657893] [2021-03-11 14:39:55,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:55,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:55,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326739377] [2021-03-11 14:39:55,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:55,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:55,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:55,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:55,179 INFO L87 Difference]: Start difference. First operand 378 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:55,346 INFO L93 Difference]: Finished difference Result 537 states and 1605 transitions. [2021-03-11 14:39:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:55,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:55,349 INFO L225 Difference]: With dead ends: 537 [2021-03-11 14:39:55,349 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:39:55,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:39:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 382. [2021-03-11 14:39:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:39:55,355 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:39:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:55,355 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:39:55,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:39:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:55,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:55,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:55,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1122 [2021-03-11 14:39:55,356 INFO L428 AbstractCegarLoop]: === Iteration 1124 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:55,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1037605881, now seen corresponding path program 1118 times [2021-03-11 14:39:55,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:55,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026075836] [2021-03-11 14:39:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:55,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:55,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:55,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:55,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:55,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:55,414 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:55,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:55,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:55,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:55,485 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:55,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:55,536 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:55,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:55,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:55,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026075836] [2021-03-11 14:39:55,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:55,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:55,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049291309] [2021-03-11 14:39:55,583 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:55,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:55,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:55,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:55,583 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:55,756 INFO L93 Difference]: Finished difference Result 536 states and 1601 transitions. [2021-03-11 14:39:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:55,759 INFO L225 Difference]: With dead ends: 536 [2021-03-11 14:39:55,759 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:39:55,759 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 284.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:39:55,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 380. [2021-03-11 14:39:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:39:55,765 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:39:55,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:55,765 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:39:55,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:39:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:55,765 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:55,765 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:55,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1123 [2021-03-11 14:39:55,766 INFO L428 AbstractCegarLoop]: === Iteration 1125 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1742127331, now seen corresponding path program 1119 times [2021-03-11 14:39:55,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:55,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64227917] [2021-03-11 14:39:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:55,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:55,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:55,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:55,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:55,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:55,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:55,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:55,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:55,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:55,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:55,886 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:55,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:55,923 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:55,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:55,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64227917] [2021-03-11 14:39:55,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:55,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:55,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306608712] [2021-03-11 14:39:55,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:55,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:55,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:55,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:55,958 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:56,080 INFO L93 Difference]: Finished difference Result 537 states and 1605 transitions. [2021-03-11 14:39:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:56,083 INFO L225 Difference]: With dead ends: 537 [2021-03-11 14:39:56,083 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:39:56,083 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 232.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:56,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:39:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 383. [2021-03-11 14:39:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43979057591623) internal successors, (1314), 382 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1314 transitions. [2021-03-11 14:39:56,089 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1314 transitions. Word has length 22 [2021-03-11 14:39:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:56,089 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1314 transitions. [2021-03-11 14:39:56,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,089 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1314 transitions. [2021-03-11 14:39:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:56,089 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:56,089 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:56,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1124 [2021-03-11 14:39:56,089 INFO L428 AbstractCegarLoop]: === Iteration 1126 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:56,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:56,090 INFO L82 PathProgramCache]: Analyzing trace with hash 499214453, now seen corresponding path program 1120 times [2021-03-11 14:39:56,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:56,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11708772] [2021-03-11 14:39:56,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:56,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:56,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:56,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:56,124 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:56,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:56,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:56,177 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:56,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:56,217 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:56,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:56,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:56,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11708772] [2021-03-11 14:39:56,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:56,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:56,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733367933] [2021-03-11 14:39:56,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:56,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:56,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:56,312 INFO L87 Difference]: Start difference. First operand 383 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:56,472 INFO L93 Difference]: Finished difference Result 529 states and 1596 transitions. [2021-03-11 14:39:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:56,475 INFO L225 Difference]: With dead ends: 529 [2021-03-11 14:39:56,475 INFO L226 Difference]: Without dead ends: 514 [2021-03-11 14:39:56,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 277.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-03-11 14:39:56,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 380. [2021-03-11 14:39:56,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:39:56,481 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:56,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:56,481 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:39:56,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:39:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:56,481 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:56,481 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:56,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1125 [2021-03-11 14:39:56,481 INFO L428 AbstractCegarLoop]: === Iteration 1127 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:56,481 INFO L82 PathProgramCache]: Analyzing trace with hash 2107636983, now seen corresponding path program 1121 times [2021-03-11 14:39:56,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:56,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039991622] [2021-03-11 14:39:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:56,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:56,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:56,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:56,515 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:56,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:56,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:56,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:56,570 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:56,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:56,610 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:56,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:56,662 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:56,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:56,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039991622] [2021-03-11 14:39:56,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:56,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:56,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521081701] [2021-03-11 14:39:56,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:56,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:56,713 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:56,875 INFO L93 Difference]: Finished difference Result 535 states and 1598 transitions. [2021-03-11 14:39:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:56,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:56,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:56,878 INFO L225 Difference]: With dead ends: 535 [2021-03-11 14:39:56,878 INFO L226 Difference]: Without dead ends: 525 [2021-03-11 14:39:56,878 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 284.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:56,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-03-11 14:39:56,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 382. [2021-03-11 14:39:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.438320209973753) internal successors, (1310), 381 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1310 transitions. [2021-03-11 14:39:56,884 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1310 transitions. Word has length 22 [2021-03-11 14:39:56,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:56,884 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1310 transitions. [2021-03-11 14:39:56,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1310 transitions. [2021-03-11 14:39:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:56,885 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:56,885 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:56,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1126 [2021-03-11 14:39:56,885 INFO L428 AbstractCegarLoop]: === Iteration 1128 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1934389291, now seen corresponding path program 1122 times [2021-03-11 14:39:56,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:56,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746737207] [2021-03-11 14:39:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:56,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:56,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:56,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:56,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:56,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:56,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:56,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:56,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:56,974 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:56,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:57,013 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:57,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:57,062 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:57,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:57,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746737207] [2021-03-11 14:39:57,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:57,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:57,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099763162] [2021-03-11 14:39:57,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:57,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:57,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:57,108 INFO L87 Difference]: Start difference. First operand 382 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:57,260 INFO L93 Difference]: Finished difference Result 528 states and 1592 transitions. [2021-03-11 14:39:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:57,262 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:57,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:57,262 INFO L225 Difference]: With dead ends: 528 [2021-03-11 14:39:57,262 INFO L226 Difference]: Without dead ends: 512 [2021-03-11 14:39:57,263 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 260.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:57,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-03-11 14:39:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 378. [2021-03-11 14:39:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.456233421750663) internal successors, (1303), 377 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1303 transitions. [2021-03-11 14:39:57,268 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1303 transitions. Word has length 22 [2021-03-11 14:39:57,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:57,268 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1303 transitions. [2021-03-11 14:39:57,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,268 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1303 transitions. [2021-03-11 14:39:57,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:57,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:57,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:57,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1127 [2021-03-11 14:39:57,269 INFO L428 AbstractCegarLoop]: === Iteration 1129 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:57,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash 2020235799, now seen corresponding path program 1123 times [2021-03-11 14:39:57,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:57,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150206916] [2021-03-11 14:39:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:57,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:57,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:57,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:57,296 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:57,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:57,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:57,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:57,337 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:57,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:57,369 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:57,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:57,417 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:57,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:57,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150206916] [2021-03-11 14:39:57,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:57,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:57,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990263667] [2021-03-11 14:39:57,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:57,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:57,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:57,463 INFO L87 Difference]: Start difference. First operand 378 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:57,606 INFO L93 Difference]: Finished difference Result 527 states and 1579 transitions. [2021-03-11 14:39:57,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:57,607 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:57,608 INFO L225 Difference]: With dead ends: 527 [2021-03-11 14:39:57,608 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:39:57,608 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 218.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:39:57,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 380. [2021-03-11 14:39:57,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:39:57,614 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:57,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:57,614 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:39:57,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:57,614 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:39:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:57,615 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:57,615 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:57,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1128 [2021-03-11 14:39:57,615 INFO L428 AbstractCegarLoop]: === Iteration 1130 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:57,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:57,615 INFO L82 PathProgramCache]: Analyzing trace with hash -663790539, now seen corresponding path program 1124 times [2021-03-11 14:39:57,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:57,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624746364] [2021-03-11 14:39:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:57,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:57,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:57,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:57,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:57,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:57,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:57,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:57,705 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:39:57,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:39:57,751 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:57,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:57,803 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:57,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624746364] [2021-03-11 14:39:57,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:57,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:57,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250510599] [2021-03-11 14:39:57,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:57,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:57,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:57,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:57,850 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:58,022 INFO L93 Difference]: Finished difference Result 528 states and 1580 transitions. [2021-03-11 14:39:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:58,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:58,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:58,025 INFO L225 Difference]: With dead ends: 528 [2021-03-11 14:39:58,025 INFO L226 Difference]: Without dead ends: 517 [2021-03-11 14:39:58,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 292.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-03-11 14:39:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 379. [2021-03-11 14:39:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4523809523809526) internal successors, (1305), 378 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1305 transitions. [2021-03-11 14:39:58,031 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1305 transitions. Word has length 22 [2021-03-11 14:39:58,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:58,031 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1305 transitions. [2021-03-11 14:39:58,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,031 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1305 transitions. [2021-03-11 14:39:58,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:58,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:58,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:58,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1129 [2021-03-11 14:39:58,031 INFO L428 AbstractCegarLoop]: === Iteration 1131 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:58,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1262038965, now seen corresponding path program 1125 times [2021-03-11 14:39:58,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:58,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207866090] [2021-03-11 14:39:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:58,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:58,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:58,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:58,066 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:58,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:58,091 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:58,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:58,122 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:58,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:58,187 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:39:58,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:39:58,238 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:58,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:58,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207866090] [2021-03-11 14:39:58,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:58,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:58,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704461021] [2021-03-11 14:39:58,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:58,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:58,284 INFO L87 Difference]: Start difference. First operand 379 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:58,434 INFO L93 Difference]: Finished difference Result 528 states and 1581 transitions. [2021-03-11 14:39:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:58,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:58,437 INFO L225 Difference]: With dead ends: 528 [2021-03-11 14:39:58,437 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:39:58,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 273.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:39:58,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 380. [2021-03-11 14:39:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.445910290237467) internal successors, (1306), 379 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1306 transitions. [2021-03-11 14:39:58,443 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1306 transitions. Word has length 22 [2021-03-11 14:39:58,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:58,443 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1306 transitions. [2021-03-11 14:39:58,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,443 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1306 transitions. [2021-03-11 14:39:58,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:58,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:58,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:58,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1130 [2021-03-11 14:39:58,444 INFO L428 AbstractCegarLoop]: === Iteration 1132 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:58,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:58,444 INFO L82 PathProgramCache]: Analyzing trace with hash -726809163, now seen corresponding path program 1126 times [2021-03-11 14:39:58,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:58,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663714865] [2021-03-11 14:39:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:58,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:58,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:58,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:58,477 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:58,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:58,496 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:58,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:58,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:39:58,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:39:58,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:58,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:58,605 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:58,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:58,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663714865] [2021-03-11 14:39:58,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:58,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:58,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256583453] [2021-03-11 14:39:58,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:58,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:58,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:58,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:58,641 INFO L87 Difference]: Start difference. First operand 380 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:58,787 INFO L93 Difference]: Finished difference Result 522 states and 1578 transitions. [2021-03-11 14:39:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:58,790 INFO L225 Difference]: With dead ends: 522 [2021-03-11 14:39:58,790 INFO L226 Difference]: Without dead ends: 509 [2021-03-11 14:39:58,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-03-11 14:39:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 379. [2021-03-11 14:39:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4497354497354498) internal successors, (1304), 378 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1304 transitions. [2021-03-11 14:39:58,796 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1304 transitions. Word has length 22 [2021-03-11 14:39:58,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:58,796 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1304 transitions. [2021-03-11 14:39:58,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1304 transitions. [2021-03-11 14:39:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:58,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:58,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:58,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1131 [2021-03-11 14:39:58,797 INFO L428 AbstractCegarLoop]: === Iteration 1133 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:58,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:58,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1251535861, now seen corresponding path program 1127 times [2021-03-11 14:39:58,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:58,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438931416] [2021-03-11 14:39:58,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:58,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:58,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:58,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:58,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:58,832 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:58,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:58,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:58,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:58,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:58,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:58,926 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:58,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:58,975 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:59,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438931416] [2021-03-11 14:39:59,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:59,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:59,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804221958] [2021-03-11 14:39:59,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:59,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:59,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:59,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:59,022 INFO L87 Difference]: Start difference. First operand 379 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:59,204 INFO L93 Difference]: Finished difference Result 530 states and 1585 transitions. [2021-03-11 14:39:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:59,206 INFO L225 Difference]: With dead ends: 530 [2021-03-11 14:39:59,207 INFO L226 Difference]: Without dead ends: 520 [2021-03-11 14:39:59,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 283.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:59,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-03-11 14:39:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 381. [2021-03-11 14:39:59,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4394736842105265) internal successors, (1307), 380 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1307 transitions. [2021-03-11 14:39:59,212 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1307 transitions. Word has length 22 [2021-03-11 14:39:59,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:59,212 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1307 transitions. [2021-03-11 14:39:59,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1307 transitions. [2021-03-11 14:39:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:59,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:59,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:59,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1132 [2021-03-11 14:39:59,213 INFO L428 AbstractCegarLoop]: === Iteration 1134 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:59,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1967720279, now seen corresponding path program 1128 times [2021-03-11 14:39:59,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:59,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836378695] [2021-03-11 14:39:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:59,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:59,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:59,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:59,248 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:39:59,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:39:59,273 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:39:59,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:39:59,304 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:39:59,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:39:59,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:59,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:59,393 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:59,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:59,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836378695] [2021-03-11 14:39:59,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:59,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:59,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966748721] [2021-03-11 14:39:59,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:59,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:59,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:59,440 INFO L87 Difference]: Start difference. First operand 381 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:59,600 INFO L93 Difference]: Finished difference Result 523 states and 1579 transitions. [2021-03-11 14:39:59,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:59,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:59,603 INFO L225 Difference]: With dead ends: 523 [2021-03-11 14:39:59,603 INFO L226 Difference]: Without dead ends: 507 [2021-03-11 14:39:59,603 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 280.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-03-11 14:39:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 377. [2021-03-11 14:39:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4601063829787235) internal successors, (1301), 376 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1301 transitions. [2021-03-11 14:39:59,609 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1301 transitions. Word has length 22 [2021-03-11 14:39:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:39:59,609 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1301 transitions. [2021-03-11 14:39:59,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1301 transitions. [2021-03-11 14:39:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:39:59,609 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:39:59,609 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:39:59,609 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1133 [2021-03-11 14:39:59,609 INFO L428 AbstractCegarLoop]: === Iteration 1135 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:39:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:39:59,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1389402141, now seen corresponding path program 1129 times [2021-03-11 14:39:59,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:39:59,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141062201] [2021-03-11 14:39:59,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:39:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:39:59,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:39:59,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:39:59,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:39:59,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:39:59,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:39:59,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:39:59,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:39:59,721 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:39:59,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:39:59,758 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:39:59,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:39:59,800 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:39:59,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:39:59,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:39:59,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141062201] [2021-03-11 14:39:59,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:39:59,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:39:59,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467734648] [2021-03-11 14:39:59,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:39:59,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:39:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:39:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:39:59,837 INFO L87 Difference]: Start difference. First operand 377 states and 1301 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:39:59,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:39:59,991 INFO L93 Difference]: Finished difference Result 543 states and 1619 transitions. [2021-03-11 14:39:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:39:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:39:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:39:59,994 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:39:59,994 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:39:59,994 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 275.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:39:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:39:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 380. [2021-03-11 14:39:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:40:00,000 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:40:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:00,000 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:40:00,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:40:00,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:00,000 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:00,000 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:00,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1134 [2021-03-11 14:40:00,000 INFO L428 AbstractCegarLoop]: === Iteration 1136 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:00,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1543894283, now seen corresponding path program 1130 times [2021-03-11 14:40:00,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:00,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653304226] [2021-03-11 14:40:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:00,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:00,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:00,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:00,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:00,056 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:00,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:00,113 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:00,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:00,155 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:00,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:00,208 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:00,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:00,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653304226] [2021-03-11 14:40:00,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:00,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:00,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893341529] [2021-03-11 14:40:00,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:00,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:00,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:00,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:00,257 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:00,400 INFO L93 Difference]: Finished difference Result 541 states and 1614 transitions. [2021-03-11 14:40:00,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:00,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:00,403 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:40:00,403 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:40:00,403 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:40:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 379. [2021-03-11 14:40:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:40:00,409 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:40:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:00,409 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:40:00,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:40:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:00,410 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:00,410 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:00,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1135 [2021-03-11 14:40:00,410 INFO L428 AbstractCegarLoop]: === Iteration 1137 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:00,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:00,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1811473567, now seen corresponding path program 1131 times [2021-03-11 14:40:00,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:00,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672979483] [2021-03-11 14:40:00,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:00,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:00,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:00,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:00,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:00,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:00,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:00,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:00,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:00,606 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:00,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:00,665 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:00,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:00,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:00,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672979483] [2021-03-11 14:40:00,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:00,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:00,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364512549] [2021-03-11 14:40:00,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:00,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:00,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:00,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:00,721 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:00,914 INFO L93 Difference]: Finished difference Result 550 states and 1634 transitions. [2021-03-11 14:40:00,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:00,917 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:40:00,917 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:40:00,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 366.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:40:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 382. [2021-03-11 14:40:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4435695538057742) internal successors, (1312), 381 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1312 transitions. [2021-03-11 14:40:00,924 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1312 transitions. Word has length 22 [2021-03-11 14:40:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:00,924 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1312 transitions. [2021-03-11 14:40:00,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1312 transitions. [2021-03-11 14:40:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:00,924 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:00,924 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:00,924 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1136 [2021-03-11 14:40:00,924 INFO L428 AbstractCegarLoop]: === Iteration 1138 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:00,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1431682507, now seen corresponding path program 1132 times [2021-03-11 14:40:00,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:00,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340404041] [2021-03-11 14:40:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:00,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:00,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:00,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:00,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:00,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:00,987 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:00,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:01,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:01,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:01,088 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:01,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:01,127 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:01,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:01,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:01,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340404041] [2021-03-11 14:40:01,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:01,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:01,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953622064] [2021-03-11 14:40:01,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:01,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:01,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:01,163 INFO L87 Difference]: Start difference. First operand 382 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:01,345 INFO L93 Difference]: Finished difference Result 553 states and 1637 transitions. [2021-03-11 14:40:01,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:01,348 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:01,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:01,349 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:40:01,349 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:40:01,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 297.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:40:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 379. [2021-03-11 14:40:01,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.455026455026455) internal successors, (1306), 378 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1306 transitions. [2021-03-11 14:40:01,355 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:01,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:01,355 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1306 transitions. [2021-03-11 14:40:01,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1306 transitions. [2021-03-11 14:40:01,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:01,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:01,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:01,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1137 [2021-03-11 14:40:01,356 INFO L428 AbstractCegarLoop]: === Iteration 1139 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:01,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1037548017, now seen corresponding path program 1133 times [2021-03-11 14:40:01,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:01,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163741786] [2021-03-11 14:40:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:01,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:01,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:01,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:01,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:01,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:01,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:01,476 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:01,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:01,540 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:01,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:01,593 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:01,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:01,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163741786] [2021-03-11 14:40:01,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:01,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:01,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360565490] [2021-03-11 14:40:01,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:01,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:01,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:01,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:01,649 INFO L87 Difference]: Start difference. First operand 379 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:01,793 INFO L93 Difference]: Finished difference Result 544 states and 1619 transitions. [2021-03-11 14:40:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:01,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:01,796 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:40:01,796 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:40:01,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 319.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:01,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:40:01,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 380. [2021-03-11 14:40:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:40:01,802 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:40:01,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:01,802 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:40:01,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:01,802 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:40:01,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:01,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:01,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:01,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1138 [2021-03-11 14:40:01,803 INFO L428 AbstractCegarLoop]: === Iteration 1140 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:01,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:01,803 INFO L82 PathProgramCache]: Analyzing trace with hash -35537363, now seen corresponding path program 1134 times [2021-03-11 14:40:01,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:01,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693793685] [2021-03-11 14:40:01,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:01,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:01,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:01,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:01,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:01,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:01,863 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:01,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:01,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:01,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:01,980 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:01,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:02,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:02,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:02,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693793685] [2021-03-11 14:40:02,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:02,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:02,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894505588] [2021-03-11 14:40:02,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:02,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:02,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:02,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:02,082 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:02,241 INFO L93 Difference]: Finished difference Result 549 states and 1628 transitions. [2021-03-11 14:40:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:02,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:02,244 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:40:02,244 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:40:02,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 333.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:40:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 378. [2021-03-11 14:40:02,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4588859416445623) internal successors, (1304), 377 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1304 transitions. [2021-03-11 14:40:02,250 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1304 transitions. Word has length 22 [2021-03-11 14:40:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:02,250 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1304 transitions. [2021-03-11 14:40:02,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1304 transitions. [2021-03-11 14:40:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:02,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:02,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:02,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1139 [2021-03-11 14:40:02,251 INFO L428 AbstractCegarLoop]: === Iteration 1141 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:02,251 INFO L82 PathProgramCache]: Analyzing trace with hash 792065483, now seen corresponding path program 1135 times [2021-03-11 14:40:02,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:02,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602526618] [2021-03-11 14:40:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:02,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:02,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:02,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:02,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:02,331 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:02,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:02,405 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:02,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:02,449 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:02,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:02,501 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:02,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:02,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602526618] [2021-03-11 14:40:02,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:02,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:02,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206166820] [2021-03-11 14:40:02,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:02,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:02,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:02,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:02,551 INFO L87 Difference]: Start difference. First operand 378 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:02,745 INFO L93 Difference]: Finished difference Result 540 states and 1612 transitions. [2021-03-11 14:40:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:02,747 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:40:02,748 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:02,748 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 347.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 380. [2021-03-11 14:40:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:40:02,753 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:40:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:02,754 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:40:02,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:40:02,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:02,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:02,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:02,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1140 [2021-03-11 14:40:02,754 INFO L428 AbstractCegarLoop]: === Iteration 1142 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:02,754 INFO L82 PathProgramCache]: Analyzing trace with hash 946557625, now seen corresponding path program 1136 times [2021-03-11 14:40:02,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:02,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857410817] [2021-03-11 14:40:02,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:02,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:02,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:02,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:02,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:02,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:02,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:02,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:02,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:02,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:02,890 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:02,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:02,944 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:02,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:02,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857410817] [2021-03-11 14:40:02,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:02,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:02,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399542676] [2021-03-11 14:40:02,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:02,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:02,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:02,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:02,993 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:03,129 INFO L93 Difference]: Finished difference Result 538 states and 1607 transitions. [2021-03-11 14:40:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:03,131 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:03,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:03,132 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:40:03,132 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:40:03,132 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:03,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:40:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 379. [2021-03-11 14:40:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.455026455026455) internal successors, (1306), 378 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1306 transitions. [2021-03-11 14:40:03,138 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:03,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:03,138 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1306 transitions. [2021-03-11 14:40:03,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,138 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1306 transitions. [2021-03-11 14:40:03,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:03,139 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:03,139 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:03,139 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141 [2021-03-11 14:40:03,139 INFO L428 AbstractCegarLoop]: === Iteration 1143 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:03,139 INFO L82 PathProgramCache]: Analyzing trace with hash 204320161, now seen corresponding path program 1137 times [2021-03-11 14:40:03,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:03,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370156795] [2021-03-11 14:40:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:03,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:03,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:03,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:03,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:03,188 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:03,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:03,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:03,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:03,252 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:03,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:03,292 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:03,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:03,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370156795] [2021-03-11 14:40:03,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:03,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:03,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833609316] [2021-03-11 14:40:03,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:03,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:03,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:03,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:03,330 INFO L87 Difference]: Start difference. First operand 379 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:03,493 INFO L93 Difference]: Finished difference Result 542 states and 1618 transitions. [2021-03-11 14:40:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:03,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:03,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:03,496 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:40:03,496 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:40:03,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 252.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:03,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:40:03,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 382. [2021-03-11 14:40:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.440944881889764) internal successors, (1311), 381 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1311 transitions. [2021-03-11 14:40:03,502 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1311 transitions. Word has length 22 [2021-03-11 14:40:03,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:03,502 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1311 transitions. [2021-03-11 14:40:03,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,502 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1311 transitions. [2021-03-11 14:40:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:03,503 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:03,503 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:03,503 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1142 [2021-03-11 14:40:03,503 INFO L428 AbstractCegarLoop]: === Iteration 1144 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:03,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:03,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1849305351, now seen corresponding path program 1138 times [2021-03-11 14:40:03,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:03,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256595190] [2021-03-11 14:40:03,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:03,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:03,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:03,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:03,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:03,565 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:03,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:03,601 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:03,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:03,644 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:03,697 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:03,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:03,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256595190] [2021-03-11 14:40:03,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:03,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:03,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904757063] [2021-03-11 14:40:03,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:03,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:03,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:03,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:03,749 INFO L87 Difference]: Start difference. First operand 382 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:03,940 INFO L93 Difference]: Finished difference Result 534 states and 1609 transitions. [2021-03-11 14:40:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:03,942 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:40:03,943 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:40:03,943 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 303.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:03,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:40:03,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 379. [2021-03-11 14:40:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4523809523809526) internal successors, (1305), 378 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1305 transitions. [2021-03-11 14:40:03,948 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:03,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:03,948 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1305 transitions. [2021-03-11 14:40:03,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:03,949 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1305 transitions. [2021-03-11 14:40:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:03,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:03,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:03,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1143 [2021-03-11 14:40:03,949 INFO L428 AbstractCegarLoop]: === Iteration 1145 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:03,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1241625551, now seen corresponding path program 1139 times [2021-03-11 14:40:03,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:03,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835046086] [2021-03-11 14:40:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:03,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:03,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:03,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:03,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:03,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:04,009 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:04,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:04,043 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:04,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:04,114 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:04,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:04,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:04,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:04,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835046086] [2021-03-11 14:40:04,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:04,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:04,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344313284] [2021-03-11 14:40:04,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:04,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:04,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:04,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:04,219 INFO L87 Difference]: Start difference. First operand 379 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:04,352 INFO L93 Difference]: Finished difference Result 538 states and 1607 transitions. [2021-03-11 14:40:04,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:04,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:04,355 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:40:04,355 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:04,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 293.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:04,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 380. [2021-03-11 14:40:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.445910290237467) internal successors, (1306), 379 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1306 transitions. [2021-03-11 14:40:04,361 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:04,361 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1306 transitions. [2021-03-11 14:40:04,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1306 transitions. [2021-03-11 14:40:04,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:04,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:04,361 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:04,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1144 [2021-03-11 14:40:04,361 INFO L428 AbstractCegarLoop]: === Iteration 1146 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash -706395749, now seen corresponding path program 1140 times [2021-03-11 14:40:04,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:04,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561881586] [2021-03-11 14:40:04,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:04,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:04,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:04,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:04,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:04,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:04,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:04,460 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:04,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:04,533 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:04,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:04,586 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:04,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:04,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561881586] [2021-03-11 14:40:04,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:04,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:04,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097159750] [2021-03-11 14:40:04,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:04,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:04,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:04,637 INFO L87 Difference]: Start difference. First operand 380 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:04,819 INFO L93 Difference]: Finished difference Result 532 states and 1604 transitions. [2021-03-11 14:40:04,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:04,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:04,822 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:40:04,822 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:40:04,822 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 330.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:40:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 378. [2021-03-11 14:40:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.456233421750663) internal successors, (1303), 377 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1303 transitions. [2021-03-11 14:40:04,828 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:04,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:04,828 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1303 transitions. [2021-03-11 14:40:04,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1303 transitions. [2021-03-11 14:40:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:04,828 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:04,828 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:04,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1145 [2021-03-11 14:40:04,828 INFO L428 AbstractCegarLoop]: === Iteration 1147 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1443257931, now seen corresponding path program 1141 times [2021-03-11 14:40:04,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:04,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29875783] [2021-03-11 14:40:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:04,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:04,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:04,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:04,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:04,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:04,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:04,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:04,922 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:04,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:04,993 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:04,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:05,046 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:05,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:05,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29875783] [2021-03-11 14:40:05,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:05,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:05,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329057230] [2021-03-11 14:40:05,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:05,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:05,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:05,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:05,097 INFO L87 Difference]: Start difference. First operand 378 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:05,269 INFO L93 Difference]: Finished difference Result 557 states and 1654 transitions. [2021-03-11 14:40:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:05,271 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:05,272 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:40:05,272 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:40:05,272 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 326.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:05,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:40:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 384. [2021-03-11 14:40:05,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4438642297650133) internal successors, (1319), 383 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1319 transitions. [2021-03-11 14:40:05,278 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1319 transitions. Word has length 22 [2021-03-11 14:40:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:05,278 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1319 transitions. [2021-03-11 14:40:05,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1319 transitions. [2021-03-11 14:40:05,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:05,278 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:05,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:05,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1146 [2021-03-11 14:40:05,279 INFO L428 AbstractCegarLoop]: === Iteration 1148 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:05,279 INFO L82 PathProgramCache]: Analyzing trace with hash 391446709, now seen corresponding path program 1142 times [2021-03-11 14:40:05,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196410807] [2021-03-11 14:40:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:05,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:05,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:05,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:05,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:05,339 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:05,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:05,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:05,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:05,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:05,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:05,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:05,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:05,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196410807] [2021-03-11 14:40:05,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:05,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:05,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642659686] [2021-03-11 14:40:05,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:05,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:05,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:05,545 INFO L87 Difference]: Start difference. First operand 384 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:05,669 INFO L93 Difference]: Finished difference Result 560 states and 1657 transitions. [2021-03-11 14:40:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:05,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:05,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:05,671 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:40:05,671 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:40:05,671 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 303.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:05,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:40:05,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 381. [2021-03-11 14:40:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.45) internal successors, (1311), 380 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1311 transitions. [2021-03-11 14:40:05,677 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1311 transitions. Word has length 22 [2021-03-11 14:40:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:05,677 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1311 transitions. [2021-03-11 14:40:05,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1311 transitions. [2021-03-11 14:40:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:05,678 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:05,678 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:05,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1147 [2021-03-11 14:40:05,678 INFO L428 AbstractCegarLoop]: === Iteration 1149 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:05,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:05,678 INFO L82 PathProgramCache]: Analyzing trace with hash -238578979, now seen corresponding path program 1143 times [2021-03-11 14:40:05,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:05,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971679461] [2021-03-11 14:40:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:05,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:05,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:05,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:05,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:05,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:05,723 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:05,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:05,750 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:05,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:05,793 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:05,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:05,845 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:05,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:05,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971679461] [2021-03-11 14:40:05,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:05,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:05,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188384693] [2021-03-11 14:40:05,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:05,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:05,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:05,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:05,898 INFO L87 Difference]: Start difference. First operand 381 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:06,112 INFO L93 Difference]: Finished difference Result 552 states and 1642 transitions. [2021-03-11 14:40:06,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:06,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:06,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:06,115 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:40:06,115 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:40:06,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 292.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:40:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 384. [2021-03-11 14:40:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.436031331592689) internal successors, (1316), 383 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1316 transitions. [2021-03-11 14:40:06,121 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1316 transitions. Word has length 22 [2021-03-11 14:40:06,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:06,121 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1316 transitions. [2021-03-11 14:40:06,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,121 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1316 transitions. [2021-03-11 14:40:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:06,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:06,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:06,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1148 [2021-03-11 14:40:06,122 INFO L428 AbstractCegarLoop]: === Iteration 1150 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2002762805, now seen corresponding path program 1144 times [2021-03-11 14:40:06,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:06,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740888925] [2021-03-11 14:40:06,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:06,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:06,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:06,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:06,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:06,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:06,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:06,215 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:06,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:06,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:06,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:06,313 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:06,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:06,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740888925] [2021-03-11 14:40:06,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:06,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:06,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736398268] [2021-03-11 14:40:06,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:06,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:06,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:06,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:06,364 INFO L87 Difference]: Start difference. First operand 384 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:06,535 INFO L93 Difference]: Finished difference Result 544 states and 1633 transitions. [2021-03-11 14:40:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:06,538 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:40:06,538 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:06,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 301.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 381. [2021-03-11 14:40:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.442105263157895) internal successors, (1308), 380 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1308 transitions. [2021-03-11 14:40:06,544 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1308 transitions. Word has length 22 [2021-03-11 14:40:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:06,544 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1308 transitions. [2021-03-11 14:40:06,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1308 transitions. [2021-03-11 14:40:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:06,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:06,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:06,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1149 [2021-03-11 14:40:06,545 INFO L428 AbstractCegarLoop]: === Iteration 1151 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:06,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:06,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1153565277, now seen corresponding path program 1145 times [2021-03-11 14:40:06,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:06,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415226436] [2021-03-11 14:40:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:06,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:06,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:06,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:06,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:06,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:06,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:06,639 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:06,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:06,681 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:06,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:06,733 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:06,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:06,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415226436] [2021-03-11 14:40:06,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:06,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:06,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303157821] [2021-03-11 14:40:06,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:06,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:06,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:06,784 INFO L87 Difference]: Start difference. First operand 381 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:06,952 INFO L93 Difference]: Finished difference Result 556 states and 1648 transitions. [2021-03-11 14:40:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:06,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:06,954 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:40:06,954 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:40:06,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 295.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:06,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:40:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 385. [2021-03-11 14:40:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4244791666666665) internal successors, (1315), 384 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1315 transitions. [2021-03-11 14:40:06,960 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1315 transitions. Word has length 22 [2021-03-11 14:40:06,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:06,960 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1315 transitions. [2021-03-11 14:40:06,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:06,961 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1315 transitions. [2021-03-11 14:40:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:06,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:06,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:06,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1150 [2021-03-11 14:40:06,961 INFO L428 AbstractCegarLoop]: === Iteration 1152 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:06,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:06,961 INFO L82 PathProgramCache]: Analyzing trace with hash -538614005, now seen corresponding path program 1146 times [2021-03-11 14:40:06,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:06,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599494131] [2021-03-11 14:40:06,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:06,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:06,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:06,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:06,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:06,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:07,023 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:07,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:07,055 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:07,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:07,097 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:07,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:07,151 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:07,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:07,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599494131] [2021-03-11 14:40:07,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:07,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:07,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984282971] [2021-03-11 14:40:07,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:07,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:07,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:07,203 INFO L87 Difference]: Start difference. First operand 385 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:07,409 INFO L93 Difference]: Finished difference Result 545 states and 1632 transitions. [2021-03-11 14:40:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:07,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:07,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:07,412 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:40:07,412 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:40:07,412 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 301.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:40:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 378. [2021-03-11 14:40:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.453580901856764) internal successors, (1302), 377 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1302 transitions. [2021-03-11 14:40:07,418 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1302 transitions. Word has length 22 [2021-03-11 14:40:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:07,418 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1302 transitions. [2021-03-11 14:40:07,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,418 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1302 transitions. [2021-03-11 14:40:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:07,418 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:07,419 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:07,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1151 [2021-03-11 14:40:07,419 INFO L428 AbstractCegarLoop]: === Iteration 1153 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1923346297, now seen corresponding path program 1147 times [2021-03-11 14:40:07,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:07,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393925895] [2021-03-11 14:40:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:07,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:07,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:07,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:07,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:07,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:07,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:07,535 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:07,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:07,595 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:07,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:07,648 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:07,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:07,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393925895] [2021-03-11 14:40:07,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:07,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:07,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009923310] [2021-03-11 14:40:07,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:07,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:07,698 INFO L87 Difference]: Start difference. First operand 378 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:07,843 INFO L93 Difference]: Finished difference Result 545 states and 1621 transitions. [2021-03-11 14:40:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:07,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:07,845 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:40:07,845 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:40:07,845 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 305.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:40:07,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 380. [2021-03-11 14:40:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.445910290237467) internal successors, (1306), 379 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1306 transitions. [2021-03-11 14:40:07,851 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:07,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:07,851 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1306 transitions. [2021-03-11 14:40:07,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:07,851 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1306 transitions. [2021-03-11 14:40:07,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:07,852 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:07,852 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:07,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1152 [2021-03-11 14:40:07,852 INFO L428 AbstractCegarLoop]: === Iteration 1154 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash 850260917, now seen corresponding path program 1148 times [2021-03-11 14:40:07,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:07,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356314554] [2021-03-11 14:40:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:07,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:07,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:07,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:07,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:07,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:07,899 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:07,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:07,943 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:07,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:07,988 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:07,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:08,028 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:08,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:08,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356314554] [2021-03-11 14:40:08,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:08,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:08,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141437856] [2021-03-11 14:40:08,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:08,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:08,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:08,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:08,075 INFO L87 Difference]: Start difference. First operand 380 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:08,259 INFO L93 Difference]: Finished difference Result 550 states and 1630 transitions. [2021-03-11 14:40:08,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:08,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:08,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:08,262 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:40:08,262 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:40:08,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 294.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:40:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 379. [2021-03-11 14:40:08,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4497354497354498) internal successors, (1304), 378 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1304 transitions. [2021-03-11 14:40:08,268 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1304 transitions. Word has length 22 [2021-03-11 14:40:08,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:08,268 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1304 transitions. [2021-03-11 14:40:08,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,268 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1304 transitions. [2021-03-11 14:40:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:08,268 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:08,268 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:08,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1153 [2021-03-11 14:40:08,268 INFO L428 AbstractCegarLoop]: === Iteration 1155 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:08,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:08,269 INFO L82 PathProgramCache]: Analyzing trace with hash 241509387, now seen corresponding path program 1149 times [2021-03-11 14:40:08,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:08,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916453978] [2021-03-11 14:40:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:08,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:08,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:08,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:08,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:08,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:08,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:08,387 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:08,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:08,461 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:08,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:08,514 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:08,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:08,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916453978] [2021-03-11 14:40:08,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:08,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:08,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433964765] [2021-03-11 14:40:08,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:08,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:08,564 INFO L87 Difference]: Start difference. First operand 379 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:08,697 INFO L93 Difference]: Finished difference Result 542 states and 1615 transitions. [2021-03-11 14:40:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:08,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:08,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:08,700 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:40:08,700 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:40:08,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 318.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:08,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:40:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 380. [2021-03-11 14:40:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4432717678100264) internal successors, (1305), 379 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1305 transitions. [2021-03-11 14:40:08,706 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:08,706 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1305 transitions. [2021-03-11 14:40:08,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1305 transitions. [2021-03-11 14:40:08,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:08,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:08,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:08,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1154 [2021-03-11 14:40:08,706 INFO L428 AbstractCegarLoop]: === Iteration 1156 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:08,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:08,707 INFO L82 PathProgramCache]: Analyzing trace with hash 776739189, now seen corresponding path program 1150 times [2021-03-11 14:40:08,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:08,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461201131] [2021-03-11 14:40:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:08,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:08,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:08,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:08,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:08,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:08,766 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:08,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:08,823 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:08,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:08,895 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:08,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:08,948 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:08,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:08,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461201131] [2021-03-11 14:40:08,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:08,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:08,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950085326] [2021-03-11 14:40:08,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:08,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:08,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:08,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:08,989 INFO L87 Difference]: Start difference. First operand 380 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:09,109 INFO L93 Difference]: Finished difference Result 536 states and 1612 transitions. [2021-03-11 14:40:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:09,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:09,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:09,111 INFO L225 Difference]: With dead ends: 536 [2021-03-11 14:40:09,111 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:40:09,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 319.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:40:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 379. [2021-03-11 14:40:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.447089947089947) internal successors, (1303), 378 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1303 transitions. [2021-03-11 14:40:09,117 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:09,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:09,117 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1303 transitions. [2021-03-11 14:40:09,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1303 transitions. [2021-03-11 14:40:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:09,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:09,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:09,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1155 [2021-03-11 14:40:09,118 INFO L428 AbstractCegarLoop]: === Iteration 1157 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:09,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:09,118 INFO L82 PathProgramCache]: Analyzing trace with hash 262515595, now seen corresponding path program 1151 times [2021-03-11 14:40:09,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:09,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106362743] [2021-03-11 14:40:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:09,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:09,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:09,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:09,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:09,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:09,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:09,217 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:09,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:09,258 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:09,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:09,308 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:09,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:09,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106362743] [2021-03-11 14:40:09,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:09,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:09,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858998497] [2021-03-11 14:40:09,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:09,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:09,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:09,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:09,359 INFO L87 Difference]: Start difference. First operand 379 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:09,526 INFO L93 Difference]: Finished difference Result 550 states and 1633 transitions. [2021-03-11 14:40:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:09,529 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:40:09,529 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:40:09,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 303.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:40:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 383. [2021-03-11 14:40:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4293193717277486) internal successors, (1310), 382 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1310 transitions. [2021-03-11 14:40:09,535 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1310 transitions. Word has length 22 [2021-03-11 14:40:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:09,535 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1310 transitions. [2021-03-11 14:40:09,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1310 transitions. [2021-03-11 14:40:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:09,535 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:09,535 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:09,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1156 [2021-03-11 14:40:09,535 INFO L428 AbstractCegarLoop]: === Iteration 1158 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:09,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1870830777, now seen corresponding path program 1152 times [2021-03-11 14:40:09,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:09,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978943111] [2021-03-11 14:40:09,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:09,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:09,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:09,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:09,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:09,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:09,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:09,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:09,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:09,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:09,696 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:09,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:09,753 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:09,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:09,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978943111] [2021-03-11 14:40:09,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:09,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:09,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957671758] [2021-03-11 14:40:09,804 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:09,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:09,804 INFO L87 Difference]: Start difference. First operand 383 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,075 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:40:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:10,095 INFO L93 Difference]: Finished difference Result 539 states and 1617 transitions. [2021-03-11 14:40:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:10,097 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:10,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:10,098 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:40:10,098 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:40:10,098 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 440.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:40:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 377. [2021-03-11 14:40:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4574468085106385) internal successors, (1300), 376 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1300 transitions. [2021-03-11 14:40:10,104 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1300 transitions. Word has length 22 [2021-03-11 14:40:10,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:10,104 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1300 transitions. [2021-03-11 14:40:10,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,104 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1300 transitions. [2021-03-11 14:40:10,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:10,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:10,104 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:10,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1157 [2021-03-11 14:40:10,104 INFO L428 AbstractCegarLoop]: === Iteration 1159 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:10,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1292512639, now seen corresponding path program 1153 times [2021-03-11 14:40:10,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:10,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052039980] [2021-03-11 14:40:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:10,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:10,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:10,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:10,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:10,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:10,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:10,208 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:10,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:10,249 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:10,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:10,311 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:10,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:10,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052039980] [2021-03-11 14:40:10,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:10,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:10,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126892492] [2021-03-11 14:40:10,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:10,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:10,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:10,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:10,366 INFO L87 Difference]: Start difference. First operand 377 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:10,563 INFO L93 Difference]: Finished difference Result 556 states and 1659 transitions. [2021-03-11 14:40:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:10,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:10,566 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:40:10,566 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:40:10,566 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 331.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:40:10,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 383. [2021-03-11 14:40:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4528795811518322) internal successors, (1319), 382 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1319 transitions. [2021-03-11 14:40:10,573 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1319 transitions. Word has length 22 [2021-03-11 14:40:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:10,573 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1319 transitions. [2021-03-11 14:40:10,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:10,573 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1319 transitions. [2021-03-11 14:40:10,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:10,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:10,573 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:10,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1158 [2021-03-11 14:40:10,573 INFO L428 AbstractCegarLoop]: === Iteration 1160 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:10,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:10,574 INFO L82 PathProgramCache]: Analyzing trace with hash 789971087, now seen corresponding path program 1154 times [2021-03-11 14:40:10,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:10,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879915024] [2021-03-11 14:40:10,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:10,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:10,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:10,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:10,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:10,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:10,730 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:10,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:10,781 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:10,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:10,848 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:10,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879915024] [2021-03-11 14:40:10,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:10,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:10,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050458088] [2021-03-11 14:40:10,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:10,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:10,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:10,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:10,906 INFO L87 Difference]: Start difference. First operand 383 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:11,109 INFO L93 Difference]: Finished difference Result 555 states and 1655 transitions. [2021-03-11 14:40:11,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:11,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:11,112 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:40:11,112 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:40:11,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 403.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:11,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:40:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 381. [2021-03-11 14:40:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:40:11,118 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:40:11,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:11,118 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:40:11,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:40:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:11,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:11,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:11,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1159 [2021-03-11 14:40:11,119 INFO L428 AbstractCegarLoop]: === Iteration 1161 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash -307925215, now seen corresponding path program 1155 times [2021-03-11 14:40:11,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:11,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865077408] [2021-03-11 14:40:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:11,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:11,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:11,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:11,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:11,174 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:11,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:11,222 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:11,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:11,289 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:11,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:11,343 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:11,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:11,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865077408] [2021-03-11 14:40:11,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:11,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:11,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994288270] [2021-03-11 14:40:11,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:11,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:11,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:11,397 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:11,577 INFO L93 Difference]: Finished difference Result 561 states and 1668 transitions. [2021-03-11 14:40:11,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:11,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:11,580 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:40:11,580 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:40:11,580 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 345.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:40:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 384. [2021-03-11 14:40:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4438642297650133) internal successors, (1319), 383 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1319 transitions. [2021-03-11 14:40:11,586 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1319 transitions. Word has length 22 [2021-03-11 14:40:11,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:11,586 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1319 transitions. [2021-03-11 14:40:11,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1319 transitions. [2021-03-11 14:40:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:11,587 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:11,587 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:11,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1160 [2021-03-11 14:40:11,587 INFO L428 AbstractCegarLoop]: === Iteration 1162 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:11,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1359736437, now seen corresponding path program 1156 times [2021-03-11 14:40:11,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:11,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621672133] [2021-03-11 14:40:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:11,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:11,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:11,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:11,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:11,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:11,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:11,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:11,713 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:11,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:11,788 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:11,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:11,856 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:11,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:11,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621672133] [2021-03-11 14:40:11,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:11,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:11,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017123954] [2021-03-11 14:40:11,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:11,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:11,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:11,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:11,931 INFO L87 Difference]: Start difference. First operand 384 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:12,111 INFO L93 Difference]: Finished difference Result 564 states and 1671 transitions. [2021-03-11 14:40:12,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:12,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:12,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:12,115 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:40:12,115 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:40:12,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 393.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:40:12,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 381. [2021-03-11 14:40:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:40:12,121 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:40:12,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:12,121 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:40:12,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:40:12,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:12,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:12,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:12,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1161 [2021-03-11 14:40:12,121 INFO L428 AbstractCegarLoop]: === Iteration 1163 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:12,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:12,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1933523917, now seen corresponding path program 1157 times [2021-03-11 14:40:12,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:12,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974391968] [2021-03-11 14:40:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:12,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:12,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:12,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:12,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:12,186 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:12,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:12,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:12,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:12,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:12,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:12,378 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:12,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:12,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974391968] [2021-03-11 14:40:12,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:12,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:12,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541237579] [2021-03-11 14:40:12,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:12,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:12,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:12,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:12,432 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:12,609 INFO L93 Difference]: Finished difference Result 558 states and 1659 transitions. [2021-03-11 14:40:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:12,611 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:12,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:12,612 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:40:12,612 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:40:12,612 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 376.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:12,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:40:12,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 383. [2021-03-11 14:40:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4424083769633507) internal successors, (1315), 382 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1315 transitions. [2021-03-11 14:40:12,618 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1315 transitions. Word has length 22 [2021-03-11 14:40:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:12,618 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1315 transitions. [2021-03-11 14:40:12,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1315 transitions. [2021-03-11 14:40:12,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:12,619 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:12,619 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:12,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1162 [2021-03-11 14:40:12,619 INFO L428 AbstractCegarLoop]: === Iteration 1164 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:12,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:12,619 INFO L82 PathProgramCache]: Analyzing trace with hash 241344635, now seen corresponding path program 1158 times [2021-03-11 14:40:12,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:12,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931397448] [2021-03-11 14:40:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:12,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:12,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:12,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:12,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:12,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:12,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:12,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:12,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:12,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:12,805 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:12,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:12,853 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:12,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:12,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:12,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931397448] [2021-03-11 14:40:12,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:12,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:12,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846536751] [2021-03-11 14:40:12,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:12,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:12,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:12,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:12,910 INFO L87 Difference]: Start difference. First operand 383 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:13,108 INFO L93 Difference]: Finished difference Result 562 states and 1665 transitions. [2021-03-11 14:40:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:13,111 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:40:13,111 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:40:13,112 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 354.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:40:13,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 379. [2021-03-11 14:40:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:40:13,117 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:40:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:13,117 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:40:13,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,118 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:40:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:13,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:13,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:13,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1163 [2021-03-11 14:40:13,118 INFO L428 AbstractCegarLoop]: === Iteration 1165 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash 695175981, now seen corresponding path program 1159 times [2021-03-11 14:40:13,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502507600] [2021-03-11 14:40:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:13,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:13,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:13,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:13,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:13,191 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:13,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:13,226 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:13,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:13,274 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:13,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:13,332 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:13,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:13,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502507600] [2021-03-11 14:40:13,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:13,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:13,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773282643] [2021-03-11 14:40:13,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:13,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:13,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:13,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:13,385 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:13,571 INFO L93 Difference]: Finished difference Result 552 states and 1648 transitions. [2021-03-11 14:40:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:13,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:13,574 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:40:13,574 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:40:13,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 317.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:40:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 383. [2021-03-11 14:40:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4476439790575917) internal successors, (1317), 382 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1317 transitions. [2021-03-11 14:40:13,580 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1317 transitions. Word has length 22 [2021-03-11 14:40:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:13,580 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1317 transitions. [2021-03-11 14:40:13,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1317 transitions. [2021-03-11 14:40:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:13,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:13,580 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:13,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1164 [2021-03-11 14:40:13,580 INFO L428 AbstractCegarLoop]: === Iteration 1166 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:13,580 INFO L82 PathProgramCache]: Analyzing trace with hash 192634429, now seen corresponding path program 1160 times [2021-03-11 14:40:13,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:13,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480009131] [2021-03-11 14:40:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:13,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:13,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:13,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:13,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:13,642 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:13,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:13,677 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:13,722 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:13,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:13,781 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:13,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:13,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480009131] [2021-03-11 14:40:13,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:13,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:13,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989814007] [2021-03-11 14:40:13,834 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:13,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:13,834 INFO L87 Difference]: Start difference. First operand 383 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:14,020 INFO L93 Difference]: Finished difference Result 551 states and 1644 transitions. [2021-03-11 14:40:14,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:14,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:14,022 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:40:14,022 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:40:14,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 306.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:14,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:40:14,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 381. [2021-03-11 14:40:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:40:14,028 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:40:14,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:14,028 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:40:14,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:40:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:14,029 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:14,029 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:14,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1165 [2021-03-11 14:40:14,029 INFO L428 AbstractCegarLoop]: === Iteration 1167 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1707868513, now seen corresponding path program 1161 times [2021-03-11 14:40:14,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:14,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243975541] [2021-03-11 14:40:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:14,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:14,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:14,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:14,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:14,076 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:14,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:14,104 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:14,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:14,136 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:14,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:14,174 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:14,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:14,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243975541] [2021-03-11 14:40:14,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:14,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:14,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82464340] [2021-03-11 14:40:14,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:14,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:14,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:14,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:14,230 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:14,411 INFO L93 Difference]: Finished difference Result 552 states and 1648 transitions. [2021-03-11 14:40:14,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:14,413 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:14,414 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:40:14,414 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:40:14,414 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 260.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:40:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 384. [2021-03-11 14:40:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4386422976501305) internal successors, (1317), 383 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1317 transitions. [2021-03-11 14:40:14,420 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1317 transitions. Word has length 22 [2021-03-11 14:40:14,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:14,420 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1317 transitions. [2021-03-11 14:40:14,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,420 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1317 transitions. [2021-03-11 14:40:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:14,420 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:14,420 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:14,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1166 [2021-03-11 14:40:14,420 INFO L428 AbstractCegarLoop]: === Iteration 1168 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash -345756999, now seen corresponding path program 1162 times [2021-03-11 14:40:14,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:14,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992772123] [2021-03-11 14:40:14,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:14,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:14,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:14,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:14,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:14,483 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:14,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:14,520 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:14,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:14,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:14,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:14,621 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:14,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:14,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:14,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992772123] [2021-03-11 14:40:14,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:14,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:14,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504460895] [2021-03-11 14:40:14,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:14,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:14,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:14,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:14,673 INFO L87 Difference]: Start difference. First operand 384 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:14,888 INFO L93 Difference]: Finished difference Result 544 states and 1639 transitions. [2021-03-11 14:40:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:14,891 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:40:14,891 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:14,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 317.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 381. [2021-03-11 14:40:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4473684210526314) internal successors, (1310), 380 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1310 transitions. [2021-03-11 14:40:14,898 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1310 transitions. Word has length 22 [2021-03-11 14:40:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:14,898 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1310 transitions. [2021-03-11 14:40:14,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1310 transitions. [2021-03-11 14:40:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:14,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:14,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:14,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1167 [2021-03-11 14:40:14,901 INFO L428 AbstractCegarLoop]: === Iteration 1169 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:14,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:14,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1262665531, now seen corresponding path program 1163 times [2021-03-11 14:40:14,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:14,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911476340] [2021-03-11 14:40:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:14,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:14,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:14,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:14,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:14,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:14,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:14,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:15,010 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:15,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:15,060 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:15,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:15,118 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:15,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:15,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911476340] [2021-03-11 14:40:15,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:15,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:15,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705626213] [2021-03-11 14:40:15,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:15,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:15,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:15,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:15,169 INFO L87 Difference]: Start difference. First operand 381 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:15,347 INFO L93 Difference]: Finished difference Result 550 states and 1641 transitions. [2021-03-11 14:40:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:15,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:15,350 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:40:15,350 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:40:15,350 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 323.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:15,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:40:15,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 383. [2021-03-11 14:40:15,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43717277486911) internal successors, (1313), 382 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1313 transitions. [2021-03-11 14:40:15,356 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1313 transitions. Word has length 22 [2021-03-11 14:40:15,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:15,356 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1313 transitions. [2021-03-11 14:40:15,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,356 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1313 transitions. [2021-03-11 14:40:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:15,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:15,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:15,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1168 [2021-03-11 14:40:15,357 INFO L428 AbstractCegarLoop]: === Iteration 1170 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1089417839, now seen corresponding path program 1164 times [2021-03-11 14:40:15,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:15,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293579892] [2021-03-11 14:40:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:15,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:15,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:15,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:15,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:15,418 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:15,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:15,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:15,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:15,488 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:15,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:15,527 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:15,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:15,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293579892] [2021-03-11 14:40:15,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:15,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:15,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171738552] [2021-03-11 14:40:15,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:15,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:15,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:15,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:15,565 INFO L87 Difference]: Start difference. First operand 383 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:15,704 INFO L93 Difference]: Finished difference Result 543 states and 1635 transitions. [2021-03-11 14:40:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:15,708 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:40:15,708 INFO L226 Difference]: Without dead ends: 527 [2021-03-11 14:40:15,708 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 254.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-03-11 14:40:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 379. [2021-03-11 14:40:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4523809523809526) internal successors, (1305), 378 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1305 transitions. [2021-03-11 14:40:15,714 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:15,714 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1305 transitions. [2021-03-11 14:40:15,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1305 transitions. [2021-03-11 14:40:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:15,714 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:15,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:15,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1169 [2021-03-11 14:40:15,715 INFO L428 AbstractCegarLoop]: === Iteration 1171 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:15,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1020772205, now seen corresponding path program 1165 times [2021-03-11 14:40:15,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:15,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591391637] [2021-03-11 14:40:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:15,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:15,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:15,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:15,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:15,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:15,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:15,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:15,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:15,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:15,898 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:15,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:15,959 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:15,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:16,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591391637] [2021-03-11 14:40:16,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:16,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:16,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505425810] [2021-03-11 14:40:16,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:16,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:16,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:16,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:16,019 INFO L87 Difference]: Start difference. First operand 379 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:16,204 INFO L93 Difference]: Finished difference Result 564 states and 1675 transitions. [2021-03-11 14:40:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:16,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:16,207 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:40:16,207 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:40:16,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 363.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:40:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 385. [2021-03-11 14:40:16,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4401041666666665) internal successors, (1321), 384 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1321 transitions. [2021-03-11 14:40:16,213 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1321 transitions. Word has length 22 [2021-03-11 14:40:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:16,213 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1321 transitions. [2021-03-11 14:40:16,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1321 transitions. [2021-03-11 14:40:16,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:16,214 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:16,214 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:16,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1170 [2021-03-11 14:40:16,214 INFO L428 AbstractCegarLoop]: === Iteration 1172 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:16,214 INFO L82 PathProgramCache]: Analyzing trace with hash -31039017, now seen corresponding path program 1166 times [2021-03-11 14:40:16,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:16,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907659204] [2021-03-11 14:40:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:16,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:16,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:16,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:16,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:16,293 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:16,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:16,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:16,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:16,406 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:16,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:16,459 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:16,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:16,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907659204] [2021-03-11 14:40:16,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:16,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:16,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850570476] [2021-03-11 14:40:16,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:16,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:16,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:16,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:16,510 INFO L87 Difference]: Start difference. First operand 385 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:16,690 INFO L93 Difference]: Finished difference Result 567 states and 1678 transitions. [2021-03-11 14:40:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:16,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:16,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:16,693 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:40:16,693 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:40:16,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 357.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:16,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:40:16,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 382. [2021-03-11 14:40:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4461942257217846) internal successors, (1313), 381 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1313 transitions. [2021-03-11 14:40:16,699 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1313 transitions. Word has length 22 [2021-03-11 14:40:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:16,699 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1313 transitions. [2021-03-11 14:40:16,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1313 transitions. [2021-03-11 14:40:16,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:16,699 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:16,699 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:16,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1171 [2021-03-11 14:40:16,699 INFO L428 AbstractCegarLoop]: === Iteration 1173 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:16,700 INFO L82 PathProgramCache]: Analyzing trace with hash -661064705, now seen corresponding path program 1167 times [2021-03-11 14:40:16,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:16,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483110362] [2021-03-11 14:40:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:16,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:16,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:16,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:16,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:16,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:16,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:16,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:16,776 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:16,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:16,808 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:16,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:16,848 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:16,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:16,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483110362] [2021-03-11 14:40:16,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:16,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:16,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000477031] [2021-03-11 14:40:16,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:16,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:16,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:16,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:16,886 INFO L87 Difference]: Start difference. First operand 382 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:17,050 INFO L93 Difference]: Finished difference Result 559 states and 1663 transitions. [2021-03-11 14:40:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:17,053 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:40:17,053 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:40:17,054 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 248.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:40:17,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 385. [2021-03-11 14:40:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4322916666666665) internal successors, (1318), 384 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1318 transitions. [2021-03-11 14:40:17,060 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1318 transitions. Word has length 22 [2021-03-11 14:40:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:17,060 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1318 transitions. [2021-03-11 14:40:17,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1318 transitions. [2021-03-11 14:40:17,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:17,060 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:17,060 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:17,060 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1172 [2021-03-11 14:40:17,060 INFO L428 AbstractCegarLoop]: === Iteration 1174 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:17,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:17,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1580277079, now seen corresponding path program 1168 times [2021-03-11 14:40:17,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:17,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472077721] [2021-03-11 14:40:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:17,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:17,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:17,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:17,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:17,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:17,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:17,161 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:17,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:17,206 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:17,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:17,261 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:17,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:17,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472077721] [2021-03-11 14:40:17,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:17,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:17,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385868941] [2021-03-11 14:40:17,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:17,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:17,314 INFO L87 Difference]: Start difference. First operand 385 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:17,547 INFO L93 Difference]: Finished difference Result 551 states and 1654 transitions. [2021-03-11 14:40:17,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:17,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:17,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:17,550 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:40:17,550 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:40:17,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 317.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:40:17,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 382. [2021-03-11 14:40:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.438320209973753) internal successors, (1310), 381 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1310 transitions. [2021-03-11 14:40:17,556 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1310 transitions. Word has length 22 [2021-03-11 14:40:17,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:17,556 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1310 transitions. [2021-03-11 14:40:17,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,556 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1310 transitions. [2021-03-11 14:40:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:17,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:17,556 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:17,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1173 [2021-03-11 14:40:17,557 INFO L428 AbstractCegarLoop]: === Iteration 1175 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 731079551, now seen corresponding path program 1169 times [2021-03-11 14:40:17,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:17,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013850463] [2021-03-11 14:40:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:17,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:17,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:17,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:17,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:17,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:17,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:17,654 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:17,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:17,697 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:17,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:17,752 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:17,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:17,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013850463] [2021-03-11 14:40:17,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:17,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:17,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153300477] [2021-03-11 14:40:17,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:17,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:17,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:17,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:17,802 INFO L87 Difference]: Start difference. First operand 382 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:17,983 INFO L93 Difference]: Finished difference Result 563 states and 1669 transitions. [2021-03-11 14:40:17,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:17,985 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:40:17,985 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:40:17,985 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 305.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:40:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 386. [2021-03-11 14:40:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4207792207792207) internal successors, (1317), 385 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1317 transitions. [2021-03-11 14:40:17,991 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1317 transitions. Word has length 22 [2021-03-11 14:40:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:17,991 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1317 transitions. [2021-03-11 14:40:17,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:17,991 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1317 transitions. [2021-03-11 14:40:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:17,992 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:17,992 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:17,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1174 [2021-03-11 14:40:17,992 INFO L428 AbstractCegarLoop]: === Iteration 1176 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash -961099731, now seen corresponding path program 1170 times [2021-03-11 14:40:17,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:17,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269394340] [2021-03-11 14:40:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:17,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:17,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:18,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:18,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:18,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:18,046 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:18,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:18,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:18,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:18,110 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:18,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:18,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:18,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:18,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269394340] [2021-03-11 14:40:18,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:18,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:18,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60035184] [2021-03-11 14:40:18,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:18,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:18,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:18,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:18,200 INFO L87 Difference]: Start difference. First operand 386 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:18,431 INFO L93 Difference]: Finished difference Result 552 states and 1653 transitions. [2021-03-11 14:40:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:18,434 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:40:18,434 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:40:18,434 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 269.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:18,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:40:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 379. [2021-03-11 14:40:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.447089947089947) internal successors, (1303), 378 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1303 transitions. [2021-03-11 14:40:18,440 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:18,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:18,440 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1303 transitions. [2021-03-11 14:40:18,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1303 transitions. [2021-03-11 14:40:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:18,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:18,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:18,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1175 [2021-03-11 14:40:18,440 INFO L428 AbstractCegarLoop]: === Iteration 1177 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash 744749711, now seen corresponding path program 1171 times [2021-03-11 14:40:18,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:18,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610258900] [2021-03-11 14:40:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:18,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:18,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:18,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:18,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:18,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:18,536 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:18,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:18,608 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:18,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:18,665 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:18,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:18,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:18,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610258900] [2021-03-11 14:40:18,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:18,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:18,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012112793] [2021-03-11 14:40:18,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:18,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:18,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:18,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:18,716 INFO L87 Difference]: Start difference. First operand 379 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:18,903 INFO L93 Difference]: Finished difference Result 558 states and 1657 transitions. [2021-03-11 14:40:18,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:18,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:18,906 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:40:18,906 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:40:18,906 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 338.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:40:18,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 383. [2021-03-11 14:40:18,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43717277486911) internal successors, (1313), 382 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1313 transitions. [2021-03-11 14:40:18,912 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1313 transitions. Word has length 22 [2021-03-11 14:40:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:18,912 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1313 transitions. [2021-03-11 14:40:18,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1313 transitions. [2021-03-11 14:40:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:18,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:18,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:18,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1176 [2021-03-11 14:40:18,913 INFO L428 AbstractCegarLoop]: === Iteration 1178 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash -947429571, now seen corresponding path program 1172 times [2021-03-11 14:40:18,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:18,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249633523] [2021-03-11 14:40:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:18,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:18,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:18,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:18,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:18,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:18,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:19,010 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:19,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:19,081 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:19,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:19,135 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:19,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:19,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249633523] [2021-03-11 14:40:19,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:19,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:19,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768704764] [2021-03-11 14:40:19,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:19,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:19,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:19,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:19,187 INFO L87 Difference]: Start difference. First operand 383 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:19,415 INFO L93 Difference]: Finished difference Result 562 states and 1663 transitions. [2021-03-11 14:40:19,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:19,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:19,419 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:40:19,419 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:40:19,419 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 336.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:40:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 381. [2021-03-11 14:40:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.442105263157895) internal successors, (1308), 380 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1308 transitions. [2021-03-11 14:40:19,425 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1308 transitions. Word has length 22 [2021-03-11 14:40:19,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:19,425 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1308 transitions. [2021-03-11 14:40:19,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,425 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1308 transitions. [2021-03-11 14:40:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:19,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:19,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:19,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1177 [2021-03-11 14:40:19,425 INFO L428 AbstractCegarLoop]: === Iteration 1179 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:19,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:19,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1941902403, now seen corresponding path program 1173 times [2021-03-11 14:40:19,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:19,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116092994] [2021-03-11 14:40:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:19,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:19,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:19,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:19,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:19,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:19,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:19,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:19,546 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:19,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:19,597 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:19,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:19,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:19,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116092994] [2021-03-11 14:40:19,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:19,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:19,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967167388] [2021-03-11 14:40:19,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:19,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:19,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:19,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:19,638 INFO L87 Difference]: Start difference. First operand 381 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:19,802 INFO L93 Difference]: Finished difference Result 554 states and 1648 transitions. [2021-03-11 14:40:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:19,804 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:40:19,804 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:40:19,804 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 277.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:40:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 383. [2021-03-11 14:40:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.431937172774869) internal successors, (1311), 382 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1311 transitions. [2021-03-11 14:40:19,810 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1311 transitions. Word has length 22 [2021-03-11 14:40:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:19,810 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1311 transitions. [2021-03-11 14:40:19,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:19,810 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1311 transitions. [2021-03-11 14:40:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:19,811 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:19,811 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:19,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1178 [2021-03-11 14:40:19,811 INFO L428 AbstractCegarLoop]: === Iteration 1180 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:19,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:19,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2115150095, now seen corresponding path program 1174 times [2021-03-11 14:40:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131963112] [2021-03-11 14:40:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:19,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:19,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:19,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:19,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:19,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:19,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:19,909 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:19,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:19,952 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:19,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:20,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:20,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:20,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131963112] [2021-03-11 14:40:20,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:20,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:20,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261573784] [2021-03-11 14:40:20,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:20,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:20,061 INFO L87 Difference]: Start difference. First operand 383 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:20,250 INFO L93 Difference]: Finished difference Result 547 states and 1642 transitions. [2021-03-11 14:40:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:20,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:20,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:20,253 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:40:20,253 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:40:20,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 314.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:40:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 381. [2021-03-11 14:40:20,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4368421052631577) internal successors, (1306), 380 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1306 transitions. [2021-03-11 14:40:20,259 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:20,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:20,259 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1306 transitions. [2021-03-11 14:40:20,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1306 transitions. [2021-03-11 14:40:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:20,259 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:20,259 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:20,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1179 [2021-03-11 14:40:20,259 INFO L428 AbstractCegarLoop]: === Iteration 1181 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:20,260 INFO L82 PathProgramCache]: Analyzing trace with hash -2023140727, now seen corresponding path program 1175 times [2021-03-11 14:40:20,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:20,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72065284] [2021-03-11 14:40:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:20,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:20,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:20,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:20,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:20,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:20,356 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:20,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:20,401 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:20,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:20,461 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:20,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:20,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72065284] [2021-03-11 14:40:20,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:20,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:20,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873952409] [2021-03-11 14:40:20,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:20,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:20,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:20,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:20,514 INFO L87 Difference]: Start difference. First operand 381 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:20,718 INFO L93 Difference]: Finished difference Result 560 states and 1660 transitions. [2021-03-11 14:40:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:20,720 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:20,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:20,721 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:40:20,721 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:40:20,721 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 318.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:40:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 385. [2021-03-11 14:40:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4192708333333335) internal successors, (1313), 384 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1313 transitions. [2021-03-11 14:40:20,727 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1313 transitions. Word has length 22 [2021-03-11 14:40:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:20,727 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1313 transitions. [2021-03-11 14:40:20,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1313 transitions. [2021-03-11 14:40:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:20,728 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:20,728 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:20,728 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1180 [2021-03-11 14:40:20,728 INFO L428 AbstractCegarLoop]: === Iteration 1182 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:20,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1427773245, now seen corresponding path program 1176 times [2021-03-11 14:40:20,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:20,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619815958] [2021-03-11 14:40:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:20,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:20,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:20,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:20,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:20,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:20,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:20,826 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:20,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:20,871 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:20,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:20,921 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:20,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:20,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:20,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619815958] [2021-03-11 14:40:20,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:20,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:20,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559193038] [2021-03-11 14:40:20,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:20,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:20,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:20,958 INFO L87 Difference]: Start difference. First operand 385 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:21,133 INFO L93 Difference]: Finished difference Result 549 states and 1644 transitions. [2021-03-11 14:40:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:21,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:21,136 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:40:21,136 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:21,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 278.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:21,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 377. [2021-03-11 14:40:21,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4547872340425534) internal successors, (1299), 376 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1299 transitions. [2021-03-11 14:40:21,142 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1299 transitions. Word has length 22 [2021-03-11 14:40:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:21,142 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1299 transitions. [2021-03-11 14:40:21,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1299 transitions. [2021-03-11 14:40:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:21,143 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:21,143 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:21,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1181 [2021-03-11 14:40:21,143 INFO L428 AbstractCegarLoop]: === Iteration 1183 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:21,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1350115279, now seen corresponding path program 1177 times [2021-03-11 14:40:21,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:21,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612610201] [2021-03-11 14:40:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:21,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:21,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:21,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:21,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:21,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:21,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:21,276 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:21,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:21,332 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:21,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:21,400 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:21,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:21,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:21,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612610201] [2021-03-11 14:40:21,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:21,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:21,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197344368] [2021-03-11 14:40:21,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:21,460 INFO L87 Difference]: Start difference. First operand 377 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:21,644 INFO L93 Difference]: Finished difference Result 534 states and 1594 transitions. [2021-03-11 14:40:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:21,647 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:40:21,647 INFO L226 Difference]: Without dead ends: 525 [2021-03-11 14:40:21,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 347.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-03-11 14:40:21,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 380. [2021-03-11 14:40:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4485488126649075) internal successors, (1307), 379 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1307 transitions. [2021-03-11 14:40:21,653 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1307 transitions. Word has length 22 [2021-03-11 14:40:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:21,653 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1307 transitions. [2021-03-11 14:40:21,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:21,653 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1307 transitions. [2021-03-11 14:40:21,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:21,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:21,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:21,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1182 [2021-03-11 14:40:21,654 INFO L428 AbstractCegarLoop]: === Iteration 1184 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:21,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1333911059, now seen corresponding path program 1178 times [2021-03-11 14:40:21,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:21,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623829813] [2021-03-11 14:40:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:21,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:21,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:21,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:21,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:21,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:21,725 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:21,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:21,792 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:21,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:21,840 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:21,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:21,897 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:21,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:21,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623829813] [2021-03-11 14:40:21,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:21,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:21,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854510102] [2021-03-11 14:40:21,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:21,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:21,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:21,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:21,950 INFO L87 Difference]: Start difference. First operand 380 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:22,137 INFO L93 Difference]: Finished difference Result 535 states and 1595 transitions. [2021-03-11 14:40:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:22,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:22,140 INFO L225 Difference]: With dead ends: 535 [2021-03-11 14:40:22,140 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:40:22,140 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 354.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:22,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:40:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 379. [2021-03-11 14:40:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4523809523809526) internal successors, (1305), 378 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1305 transitions. [2021-03-11 14:40:22,146 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:22,146 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1305 transitions. [2021-03-11 14:40:22,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1305 transitions. [2021-03-11 14:40:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:22,147 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:22,147 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:22,147 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1183 [2021-03-11 14:40:22,147 INFO L428 AbstractCegarLoop]: === Iteration 1185 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:22,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:22,147 INFO L82 PathProgramCache]: Analyzing trace with hash -250322575, now seen corresponding path program 1179 times [2021-03-11 14:40:22,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:22,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330198669] [2021-03-11 14:40:22,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:22,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:22,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:22,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:22,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:22,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:22,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:22,273 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:22,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:22,339 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:22,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:22,390 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:22,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:22,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:22,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330198669] [2021-03-11 14:40:22,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:22,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:22,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051248106] [2021-03-11 14:40:22,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:22,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:22,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:22,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:22,429 INFO L87 Difference]: Start difference. First operand 379 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:22,539 INFO L93 Difference]: Finished difference Result 538 states and 1601 transitions. [2021-03-11 14:40:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:22,541 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:40:22,541 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:22,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 293.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 380. [2021-03-11 14:40:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.445910290237467) internal successors, (1306), 379 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1306 transitions. [2021-03-11 14:40:22,547 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:22,547 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1306 transitions. [2021-03-11 14:40:22,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1306 transitions. [2021-03-11 14:40:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:22,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:22,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:22,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1184 [2021-03-11 14:40:22,548 INFO L428 AbstractCegarLoop]: === Iteration 1186 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:22,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1323407955, now seen corresponding path program 1180 times [2021-03-11 14:40:22,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:22,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457811205] [2021-03-11 14:40:22,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:22,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:22,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:22,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:22,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:22,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:22,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:22,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:22,669 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:22,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:22,731 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:22,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:22,786 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:22,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:22,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457811205] [2021-03-11 14:40:22,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:22,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:22,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505261329] [2021-03-11 14:40:22,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:22,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:22,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:22,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:22,840 INFO L87 Difference]: Start difference. First operand 380 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:23,059 INFO L93 Difference]: Finished difference Result 543 states and 1610 transitions. [2021-03-11 14:40:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:23,063 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:40:23,063 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:40:23,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 357.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:23,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:40:23,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 379. [2021-03-11 14:40:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4497354497354498) internal successors, (1304), 378 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1304 transitions. [2021-03-11 14:40:23,069 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1304 transitions. Word has length 22 [2021-03-11 14:40:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:23,069 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1304 transitions. [2021-03-11 14:40:23,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1304 transitions. [2021-03-11 14:40:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:23,069 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:23,069 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:23,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1185 [2021-03-11 14:40:23,070 INFO L428 AbstractCegarLoop]: === Iteration 1187 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:23,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:23,070 INFO L82 PathProgramCache]: Analyzing trace with hash -239819471, now seen corresponding path program 1181 times [2021-03-11 14:40:23,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:23,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323522170] [2021-03-11 14:40:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:23,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:23,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:23,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:23,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:23,139 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:23,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:23,202 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:23,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:23,286 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:23,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:23,347 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:23,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:23,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323522170] [2021-03-11 14:40:23,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:23,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:23,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141140860] [2021-03-11 14:40:23,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:23,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:23,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:23,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:23,402 INFO L87 Difference]: Start difference. First operand 379 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:23,618 INFO L93 Difference]: Finished difference Result 541 states and 1607 transitions. [2021-03-11 14:40:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:23,622 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:40:23,622 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:40:23,622 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 399.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:40:23,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 381. [2021-03-11 14:40:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4394736842105265) internal successors, (1307), 380 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1307 transitions. [2021-03-11 14:40:23,628 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1307 transitions. Word has length 22 [2021-03-11 14:40:23,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:23,628 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1307 transitions. [2021-03-11 14:40:23,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1307 transitions. [2021-03-11 14:40:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:23,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:23,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:23,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1186 [2021-03-11 14:40:23,628 INFO L428 AbstractCegarLoop]: === Iteration 1188 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:23,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:23,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1371121487, now seen corresponding path program 1182 times [2021-03-11 14:40:23,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:23,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680328678] [2021-03-11 14:40:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:23,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:23,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:23,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:23,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:23,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:23,698 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:23,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:23,766 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:23,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:23,830 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:23,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:23,872 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:23,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:23,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680328678] [2021-03-11 14:40:23,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:23,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:23,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437359167] [2021-03-11 14:40:23,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:23,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:23,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:23,910 INFO L87 Difference]: Start difference. First operand 381 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:24,082 INFO L93 Difference]: Finished difference Result 545 states and 1613 transitions. [2021-03-11 14:40:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:24,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:24,086 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:40:24,086 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:40:24,086 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 339.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:40:24,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 378. [2021-03-11 14:40:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.453580901856764) internal successors, (1302), 377 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1302 transitions. [2021-03-11 14:40:24,092 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1302 transitions. Word has length 22 [2021-03-11 14:40:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:24,092 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1302 transitions. [2021-03-11 14:40:24,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,092 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1302 transitions. [2021-03-11 14:40:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:24,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:24,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:24,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1187 [2021-03-11 14:40:24,092 INFO L428 AbstractCegarLoop]: === Iteration 1189 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash 752778621, now seen corresponding path program 1183 times [2021-03-11 14:40:24,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:24,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549851272] [2021-03-11 14:40:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:24,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:24,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:24,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:24,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:24,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:24,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:24,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:24,193 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:24,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:24,241 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:24,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:24,301 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:24,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:24,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549851272] [2021-03-11 14:40:24,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:24,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:24,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81443172] [2021-03-11 14:40:24,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:24,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:24,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:24,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:24,355 INFO L87 Difference]: Start difference. First operand 378 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:24,536 INFO L93 Difference]: Finished difference Result 531 states and 1587 transitions. [2021-03-11 14:40:24,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:24,538 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:24,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:24,539 INFO L225 Difference]: With dead ends: 531 [2021-03-11 14:40:24,539 INFO L226 Difference]: Without dead ends: 522 [2021-03-11 14:40:24,539 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 289.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-03-11 14:40:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 380. [2021-03-11 14:40:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.445910290237467) internal successors, (1306), 379 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1306 transitions. [2021-03-11 14:40:24,545 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:24,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:24,545 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1306 transitions. [2021-03-11 14:40:24,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,545 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1306 transitions. [2021-03-11 14:40:24,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:24,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:24,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:24,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1188 [2021-03-11 14:40:24,545 INFO L428 AbstractCegarLoop]: === Iteration 1190 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1931247717, now seen corresponding path program 1184 times [2021-03-11 14:40:24,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:24,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063506208] [2021-03-11 14:40:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:24,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:24,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:24,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:24,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:24,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:24,611 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:24,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:24,646 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:24,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:24,693 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:24,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:24,753 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:24,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:24,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:24,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063506208] [2021-03-11 14:40:24,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:24,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:24,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748360997] [2021-03-11 14:40:24,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:24,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:24,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:24,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:24,806 INFO L87 Difference]: Start difference. First operand 380 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:24,987 INFO L93 Difference]: Finished difference Result 532 states and 1588 transitions. [2021-03-11 14:40:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:24,990 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:40:24,990 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:40:24,990 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 321.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:40:24,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 379. [2021-03-11 14:40:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4497354497354498) internal successors, (1304), 378 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1304 transitions. [2021-03-11 14:40:24,996 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1304 transitions. Word has length 22 [2021-03-11 14:40:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:24,996 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1304 transitions. [2021-03-11 14:40:24,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1304 transitions. [2021-03-11 14:40:24,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:24,997 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:24,997 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:24,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1189 [2021-03-11 14:40:24,997 INFO L428 AbstractCegarLoop]: === Iteration 1191 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:24,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:24,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1765471153, now seen corresponding path program 1185 times [2021-03-11 14:40:24,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:24,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936521649] [2021-03-11 14:40:24,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:25,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:25,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:25,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:25,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:25,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:25,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:25,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:25,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:25,171 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:25,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:25,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:25,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:25,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936521649] [2021-03-11 14:40:25,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:25,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:25,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328187689] [2021-03-11 14:40:25,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:25,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:25,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:25,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:25,281 INFO L87 Difference]: Start difference. First operand 379 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:25,406 INFO L93 Difference]: Finished difference Result 532 states and 1589 transitions. [2021-03-11 14:40:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:25,409 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:40:25,409 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:40:25,409 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 299.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:40:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 380. [2021-03-11 14:40:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4432717678100264) internal successors, (1305), 379 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1305 transitions. [2021-03-11 14:40:25,414 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:25,415 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1305 transitions. [2021-03-11 14:40:25,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1305 transitions. [2021-03-11 14:40:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:25,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:25,415 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:25,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1190 [2021-03-11 14:40:25,415 INFO L428 AbstractCegarLoop]: === Iteration 1192 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1994266341, now seen corresponding path program 1186 times [2021-03-11 14:40:25,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:25,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907604370] [2021-03-11 14:40:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:25,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:25,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:25,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:25,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:25,470 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:25,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:25,500 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:25,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:25,572 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:25,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:25,635 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:25,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907604370] [2021-03-11 14:40:25,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:25,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:25,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082627821] [2021-03-11 14:40:25,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:25,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:25,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:25,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:25,694 INFO L87 Difference]: Start difference. First operand 380 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:25,881 INFO L93 Difference]: Finished difference Result 526 states and 1586 transitions. [2021-03-11 14:40:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:25,884 INFO L225 Difference]: With dead ends: 526 [2021-03-11 14:40:25,884 INFO L226 Difference]: Without dead ends: 513 [2021-03-11 14:40:25,884 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 338.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-03-11 14:40:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 379. [2021-03-11 14:40:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.447089947089947) internal successors, (1303), 378 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1303 transitions. [2021-03-11 14:40:25,889 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:25,890 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1303 transitions. [2021-03-11 14:40:25,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1303 transitions. [2021-03-11 14:40:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:25,890 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:25,890 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:25,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1191 [2021-03-11 14:40:25,890 INFO L428 AbstractCegarLoop]: === Iteration 1193 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:25,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1775974257, now seen corresponding path program 1187 times [2021-03-11 14:40:25,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:25,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909588382] [2021-03-11 14:40:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:25,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:25,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:25,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:25,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:25,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:25,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:25,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:25,991 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:25,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:26,039 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:26,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:26,101 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:26,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:26,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909588382] [2021-03-11 14:40:26,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:26,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:26,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525973223] [2021-03-11 14:40:26,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:26,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:26,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:26,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:26,154 INFO L87 Difference]: Start difference. First operand 379 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:26,367 INFO L93 Difference]: Finished difference Result 534 states and 1593 transitions. [2021-03-11 14:40:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:26,370 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:26,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:26,370 INFO L225 Difference]: With dead ends: 534 [2021-03-11 14:40:26,371 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:40:26,371 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 326.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:26,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:40:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 381. [2021-03-11 14:40:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4368421052631577) internal successors, (1306), 380 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1306 transitions. [2021-03-11 14:40:26,377 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1306 transitions. Word has length 22 [2021-03-11 14:40:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:26,377 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1306 transitions. [2021-03-11 14:40:26,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1306 transitions. [2021-03-11 14:40:26,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:26,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:26,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:26,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1192 [2021-03-11 14:40:26,377 INFO L428 AbstractCegarLoop]: === Iteration 1194 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:26,378 INFO L82 PathProgramCache]: Analyzing trace with hash 700263101, now seen corresponding path program 1188 times [2021-03-11 14:40:26,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872175740] [2021-03-11 14:40:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:26,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:26,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:26,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:26,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:26,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:26,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:26,464 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:26,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:26,496 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:26,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:26,535 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:26,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:26,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:26,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872175740] [2021-03-11 14:40:26,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:26,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:26,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532772977] [2021-03-11 14:40:26,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:26,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:26,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:26,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:26,573 INFO L87 Difference]: Start difference. First operand 381 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:26,746 INFO L93 Difference]: Finished difference Result 527 states and 1587 transitions. [2021-03-11 14:40:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:26,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:26,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:26,749 INFO L225 Difference]: With dead ends: 527 [2021-03-11 14:40:26,749 INFO L226 Difference]: Without dead ends: 512 [2021-03-11 14:40:26,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 253.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:26,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-03-11 14:40:26,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 378. [2021-03-11 14:40:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4509283819628647) internal successors, (1301), 377 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1301 transitions. [2021-03-11 14:40:26,755 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1301 transitions. Word has length 22 [2021-03-11 14:40:26,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:26,755 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1301 transitions. [2021-03-11 14:40:26,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1301 transitions. [2021-03-11 14:40:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:26,756 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:26,756 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:26,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1193 [2021-03-11 14:40:26,756 INFO L428 AbstractCegarLoop]: === Iteration 1195 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:26,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:26,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1078374845, now seen corresponding path program 1189 times [2021-03-11 14:40:26,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:26,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401672516] [2021-03-11 14:40:26,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:26,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:26,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:26,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:26,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:26,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:26,849 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:26,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:26,909 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:26,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:26,974 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:26,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:27,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:27,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:27,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401672516] [2021-03-11 14:40:27,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:27,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:27,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804228270] [2021-03-11 14:40:27,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:27,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:27,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:27,085 INFO L87 Difference]: Start difference. First operand 378 states and 1301 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:27,250 INFO L93 Difference]: Finished difference Result 541 states and 1608 transitions. [2021-03-11 14:40:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:27,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:27,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:27,253 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:40:27,254 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:40:27,254 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 331.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:40:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 380. [2021-03-11 14:40:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4432717678100264) internal successors, (1305), 379 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1305 transitions. [2021-03-11 14:40:27,259 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:27,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:27,260 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1305 transitions. [2021-03-11 14:40:27,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,260 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1305 transitions. [2021-03-11 14:40:27,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:27,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:27,260 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:27,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1194 [2021-03-11 14:40:27,260 INFO L428 AbstractCegarLoop]: === Iteration 1196 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash 5289465, now seen corresponding path program 1190 times [2021-03-11 14:40:27,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:27,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214673258] [2021-03-11 14:40:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:27,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:27,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:27,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:27,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:27,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:27,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:27,381 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:27,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:27,439 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:27,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:27,480 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:27,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:27,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214673258] [2021-03-11 14:40:27,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:27,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:27,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434495374] [2021-03-11 14:40:27,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:27,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:27,521 INFO L87 Difference]: Start difference. First operand 380 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:27,665 INFO L93 Difference]: Finished difference Result 546 states and 1617 transitions. [2021-03-11 14:40:27,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:27,668 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:27,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:27,669 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:40:27,669 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:40:27,669 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 309.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:40:27,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 379. [2021-03-11 14:40:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.447089947089947) internal successors, (1303), 378 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1303 transitions. [2021-03-11 14:40:27,675 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:27,675 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1303 transitions. [2021-03-11 14:40:27,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1303 transitions. [2021-03-11 14:40:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:27,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:27,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:27,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1195 [2021-03-11 14:40:27,675 INFO L428 AbstractCegarLoop]: === Iteration 1197 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:27,676 INFO L82 PathProgramCache]: Analyzing trace with hash -603462065, now seen corresponding path program 1191 times [2021-03-11 14:40:27,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:27,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69750710] [2021-03-11 14:40:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:27,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:27,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:27,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:27,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:27,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:27,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:27,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:27,796 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:27,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:27,872 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:27,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:27,931 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:27,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:27,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:27,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69750710] [2021-03-11 14:40:27,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:27,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:27,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374754406] [2021-03-11 14:40:27,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:27,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:27,985 INFO L87 Difference]: Start difference. First operand 379 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:28,135 INFO L93 Difference]: Finished difference Result 538 states and 1602 transitions. [2021-03-11 14:40:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:28,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:28,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:28,138 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:40:28,138 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:40:28,138 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 332.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:40:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 380. [2021-03-11 14:40:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.440633245382586) internal successors, (1304), 379 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1304 transitions. [2021-03-11 14:40:28,144 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1304 transitions. Word has length 22 [2021-03-11 14:40:28,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:28,144 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1304 transitions. [2021-03-11 14:40:28,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1304 transitions. [2021-03-11 14:40:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:28,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:28,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:28,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1196 [2021-03-11 14:40:28,145 INFO L428 AbstractCegarLoop]: === Iteration 1198 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:28,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:28,145 INFO L82 PathProgramCache]: Analyzing trace with hash -68232263, now seen corresponding path program 1192 times [2021-03-11 14:40:28,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:28,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040460954] [2021-03-11 14:40:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:28,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:28,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:28,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:28,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:28,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:28,267 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:28,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:28,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:28,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:28,383 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:28,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:28,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040460954] [2021-03-11 14:40:28,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:28,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:28,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052492613] [2021-03-11 14:40:28,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:28,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:28,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:28,422 INFO L87 Difference]: Start difference. First operand 380 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:28,570 INFO L93 Difference]: Finished difference Result 532 states and 1599 transitions. [2021-03-11 14:40:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:28,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:28,574 INFO L225 Difference]: With dead ends: 532 [2021-03-11 14:40:28,574 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:40:28,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 322.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:28,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:40:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 379. [2021-03-11 14:40:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4444444444444446) internal successors, (1302), 378 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1302 transitions. [2021-03-11 14:40:28,579 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1302 transitions. Word has length 22 [2021-03-11 14:40:28,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:28,579 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1302 transitions. [2021-03-11 14:40:28,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1302 transitions. [2021-03-11 14:40:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:28,580 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:28,580 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:28,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1197 [2021-03-11 14:40:28,580 INFO L428 AbstractCegarLoop]: === Iteration 1199 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:28,580 INFO L82 PathProgramCache]: Analyzing trace with hash -582455857, now seen corresponding path program 1193 times [2021-03-11 14:40:28,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:28,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846417903] [2021-03-11 14:40:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:28,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:28,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:28,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:28,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:28,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:28,643 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:28,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:28,700 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:28,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:28,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:28,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:28,801 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:28,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:28,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846417903] [2021-03-11 14:40:28,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:28,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:28,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531529111] [2021-03-11 14:40:28,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:28,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:28,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:28,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:28,855 INFO L87 Difference]: Start difference. First operand 379 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:29,089 INFO L93 Difference]: Finished difference Result 546 states and 1620 transitions. [2021-03-11 14:40:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:29,092 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:40:29,092 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:40:29,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 337.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:40:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 383. [2021-03-11 14:40:29,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.426701570680628) internal successors, (1309), 382 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1309 transitions. [2021-03-11 14:40:29,098 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1309 transitions. Word has length 22 [2021-03-11 14:40:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:29,099 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1309 transitions. [2021-03-11 14:40:29,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1309 transitions. [2021-03-11 14:40:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:29,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:29,099 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:29,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1198 [2021-03-11 14:40:29,099 INFO L428 AbstractCegarLoop]: === Iteration 1200 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:29,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1025859325, now seen corresponding path program 1194 times [2021-03-11 14:40:29,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:29,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931930910] [2021-03-11 14:40:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:29,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:29,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:29,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:29,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:29,171 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:29,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:29,228 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:29,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:29,269 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:29,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:29,309 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:29,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:29,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:29,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931930910] [2021-03-11 14:40:29,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:29,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:29,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027108002] [2021-03-11 14:40:29,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:29,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:29,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:29,349 INFO L87 Difference]: Start difference. First operand 383 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:29,494 INFO L93 Difference]: Finished difference Result 535 states and 1604 transitions. [2021-03-11 14:40:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:29,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:29,497 INFO L225 Difference]: With dead ends: 535 [2021-03-11 14:40:29,497 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:40:29,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 292.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:40:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 378. [2021-03-11 14:40:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4482758620689653) internal successors, (1300), 377 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1300 transitions. [2021-03-11 14:40:29,503 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1300 transitions. Word has length 22 [2021-03-11 14:40:29,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:29,503 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1300 transitions. [2021-03-11 14:40:29,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1300 transitions. [2021-03-11 14:40:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:29,504 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:29,504 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:29,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1199 [2021-03-11 14:40:29,504 INFO L428 AbstractCegarLoop]: === Iteration 1201 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:29,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1280055269, now seen corresponding path program 1195 times [2021-03-11 14:40:29,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:29,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407101558] [2021-03-11 14:40:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:29,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:29,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:29,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:29,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:29,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:29,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:29,606 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:29,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:29,691 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:29,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:29,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:29,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:29,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407101558] [2021-03-11 14:40:29,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:29,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:29,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176968102] [2021-03-11 14:40:29,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:29,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:29,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:29,819 INFO L87 Difference]: Start difference. First operand 378 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:30,072 INFO L93 Difference]: Finished difference Result 547 states and 1623 transitions. [2021-03-11 14:40:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:30,076 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:40:30,076 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:40:30,076 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 391.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:40:30,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 382. [2021-03-11 14:40:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.438320209973753) internal successors, (1310), 381 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1310 transitions. [2021-03-11 14:40:30,082 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1310 transitions. Word has length 22 [2021-03-11 14:40:30,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:30,082 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1310 transitions. [2021-03-11 14:40:30,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1310 transitions. [2021-03-11 14:40:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:30,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:30,082 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:30,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1200 [2021-03-11 14:40:30,082 INFO L428 AbstractCegarLoop]: === Iteration 1202 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:30,083 INFO L82 PathProgramCache]: Analyzing trace with hash 330885689, now seen corresponding path program 1196 times [2021-03-11 14:40:30,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:30,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56902204] [2021-03-11 14:40:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:30,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:30,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:30,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:30,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:30,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:30,187 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:30,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:30,249 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:30,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:30,289 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:30,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:30,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56902204] [2021-03-11 14:40:30,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:30,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:30,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930332279] [2021-03-11 14:40:30,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:30,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:30,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:30,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:30,328 INFO L87 Difference]: Start difference. First operand 382 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:30,481 INFO L93 Difference]: Finished difference Result 551 states and 1629 transitions. [2021-03-11 14:40:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:30,484 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:30,485 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:40:30,485 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:40:30,485 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 301.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:30,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:40:30,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 380. [2021-03-11 14:40:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4432717678100264) internal successors, (1305), 379 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1305 transitions. [2021-03-11 14:40:30,491 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1305 transitions. Word has length 22 [2021-03-11 14:40:30,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:30,491 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1305 transitions. [2021-03-11 14:40:30,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,491 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1305 transitions. [2021-03-11 14:40:30,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:30,491 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:30,491 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:30,491 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1201 [2021-03-11 14:40:30,491 INFO L428 AbstractCegarLoop]: === Iteration 1203 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:30,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1333075117, now seen corresponding path program 1197 times [2021-03-11 14:40:30,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:30,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471488901] [2021-03-11 14:40:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:30,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:30,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:30,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:30,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:30,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:30,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:30,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:30,634 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:30,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:30,695 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:30,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:30,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471488901] [2021-03-11 14:40:30,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:30,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:30,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39876294] [2021-03-11 14:40:30,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:30,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:30,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:30,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:30,749 INFO L87 Difference]: Start difference. First operand 380 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:30,947 INFO L93 Difference]: Finished difference Result 543 states and 1614 transitions. [2021-03-11 14:40:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:30,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:30,950 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:40:30,950 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:40:30,951 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 328.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:30,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:40:30,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 382. [2021-03-11 14:40:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4330708661417324) internal successors, (1308), 381 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1308 transitions. [2021-03-11 14:40:30,956 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1308 transitions. Word has length 22 [2021-03-11 14:40:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:30,957 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1308 transitions. [2021-03-11 14:40:30,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1308 transitions. [2021-03-11 14:40:30,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:30,957 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:30,957 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:30,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1202 [2021-03-11 14:40:30,957 INFO L428 AbstractCegarLoop]: === Iteration 1204 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:30,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash 257363961, now seen corresponding path program 1198 times [2021-03-11 14:40:30,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:30,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047020962] [2021-03-11 14:40:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:30,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:30,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:30,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:30,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:30,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:31,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:31,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:31,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:31,110 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:31,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:31,168 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:31,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:31,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047020962] [2021-03-11 14:40:31,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:31,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:31,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399209853] [2021-03-11 14:40:31,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:31,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:31,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:31,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:31,224 INFO L87 Difference]: Start difference. First operand 382 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:31,388 INFO L93 Difference]: Finished difference Result 536 states and 1608 transitions. [2021-03-11 14:40:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:31,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:31,390 INFO L225 Difference]: With dead ends: 536 [2021-03-11 14:40:31,390 INFO L226 Difference]: Without dead ends: 522 [2021-03-11 14:40:31,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 308.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:31,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-03-11 14:40:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 380. [2021-03-11 14:40:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4379947229551453) internal successors, (1303), 379 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1303 transitions. [2021-03-11 14:40:31,396 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1303 transitions. Word has length 22 [2021-03-11 14:40:31,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:31,396 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1303 transitions. [2021-03-11 14:40:31,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1303 transitions. [2021-03-11 14:40:31,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:31,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:31,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:31,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1203 [2021-03-11 14:40:31,397 INFO L428 AbstractCegarLoop]: === Iteration 1205 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:31,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:31,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1343578221, now seen corresponding path program 1199 times [2021-03-11 14:40:31,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:31,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995847730] [2021-03-11 14:40:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:31,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:31,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:31,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:31,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:31,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:31,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:31,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:31,516 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:31,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:31,574 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:31,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:31,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:31,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995847730] [2021-03-11 14:40:31,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:31,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:31,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803960808] [2021-03-11 14:40:31,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:31,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:31,632 INFO L87 Difference]: Start difference. First operand 380 states and 1303 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:31,837 INFO L93 Difference]: Finished difference Result 549 states and 1626 transitions. [2021-03-11 14:40:31,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:31,840 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:40:31,841 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:40:31,841 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 301.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:31,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:40:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 384. [2021-03-11 14:40:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4203655352480418) internal successors, (1310), 383 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1310 transitions. [2021-03-11 14:40:31,846 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1310 transitions. Word has length 22 [2021-03-11 14:40:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:31,846 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1310 transitions. [2021-03-11 14:40:31,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1310 transitions. [2021-03-11 14:40:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:31,847 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:31,847 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:31,847 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1204 [2021-03-11 14:40:31,847 INFO L428 AbstractCegarLoop]: === Iteration 1206 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1343073893, now seen corresponding path program 1200 times [2021-03-11 14:40:31,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:31,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510865248] [2021-03-11 14:40:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:31,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:31,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:31,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:31,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:31,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:31,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:31,959 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:31,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:32,008 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:32,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:32,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:32,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:32,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510865248] [2021-03-11 14:40:32,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:32,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:32,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229212724] [2021-03-11 14:40:32,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:32,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:32,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:32,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:32,124 INFO L87 Difference]: Start difference. First operand 384 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:32,322 INFO L93 Difference]: Finished difference Result 538 states and 1610 transitions. [2021-03-11 14:40:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:32,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:32,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:32,326 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:40:32,326 INFO L226 Difference]: Without dead ends: 518 [2021-03-11 14:40:32,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 340.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-03-11 14:40:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 376. [2021-03-11 14:40:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.458666666666667) internal successors, (1297), 375 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1297 transitions. [2021-03-11 14:40:32,332 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1297 transitions. Word has length 22 [2021-03-11 14:40:32,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:32,332 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1297 transitions. [2021-03-11 14:40:32,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,332 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1297 transitions. [2021-03-11 14:40:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:32,332 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:32,332 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:32,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1205 [2021-03-11 14:40:32,332 INFO L428 AbstractCegarLoop]: === Iteration 1207 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1928979493, now seen corresponding path program 1201 times [2021-03-11 14:40:32,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:32,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474521701] [2021-03-11 14:40:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:32,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:32,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:32,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:32,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:32,402 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:32,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:32,464 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:32,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:32,512 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:32,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:32,570 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:32,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:32,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:32,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474521701] [2021-03-11 14:40:32,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:32,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:32,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871513027] [2021-03-11 14:40:32,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:32,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:32,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:32,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:32,625 INFO L87 Difference]: Start difference. First operand 376 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:32,781 INFO L93 Difference]: Finished difference Result 616 states and 1856 transitions. [2021-03-11 14:40:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:32,783 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:40:32,783 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:40:32,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 330.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:32,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:40:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 386. [2021-03-11 14:40:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.47012987012987) internal successors, (1336), 385 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1336 transitions. [2021-03-11 14:40:32,789 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1336 transitions. Word has length 22 [2021-03-11 14:40:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:32,789 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1336 transitions. [2021-03-11 14:40:32,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:32,790 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1336 transitions. [2021-03-11 14:40:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:32,790 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:32,790 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:32,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1206 [2021-03-11 14:40:32,790 INFO L428 AbstractCegarLoop]: === Iteration 1208 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:32,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1426437941, now seen corresponding path program 1202 times [2021-03-11 14:40:32,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:32,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217249359] [2021-03-11 14:40:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:32,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:32,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:32,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:32,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:32,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:32,839 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:32,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:32,883 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:32,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:32,927 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:32,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:32,985 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:32,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:33,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:33,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217249359] [2021-03-11 14:40:33,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:33,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:33,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488908593] [2021-03-11 14:40:33,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:33,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:33,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:33,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:33,040 INFO L87 Difference]: Start difference. First operand 386 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:33,239 INFO L93 Difference]: Finished difference Result 615 states and 1852 transitions. [2021-03-11 14:40:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:33,242 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:40:33,242 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:40:33,242 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 316.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:40:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 384. [2021-03-11 14:40:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.475195822454308) internal successors, (1331), 383 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1331 transitions. [2021-03-11 14:40:33,248 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1331 transitions. Word has length 22 [2021-03-11 14:40:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:33,248 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1331 transitions. [2021-03-11 14:40:33,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1331 transitions. [2021-03-11 14:40:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:33,249 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:33,249 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:33,249 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1207 [2021-03-11 14:40:33,249 INFO L428 AbstractCegarLoop]: === Iteration 1209 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 328541639, now seen corresponding path program 1203 times [2021-03-11 14:40:33,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:33,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554235624] [2021-03-11 14:40:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:33,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:33,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:33,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:33,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:33,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:33,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:33,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:33,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:33,459 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:33,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:33,518 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:33,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:33,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554235624] [2021-03-11 14:40:33,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:33,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:33,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777220849] [2021-03-11 14:40:33,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:33,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:33,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:33,573 INFO L87 Difference]: Start difference. First operand 384 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:33,762 INFO L93 Difference]: Finished difference Result 621 states and 1865 transitions. [2021-03-11 14:40:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:33,765 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:40:33,765 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:40:33,766 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 386.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:40:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 387. [2021-03-11 14:40:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.461139896373057) internal successors, (1336), 386 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1336 transitions. [2021-03-11 14:40:33,772 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1336 transitions. Word has length 22 [2021-03-11 14:40:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:33,772 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1336 transitions. [2021-03-11 14:40:33,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1336 transitions. [2021-03-11 14:40:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:33,772 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:33,772 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:33,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1208 [2021-03-11 14:40:33,773 INFO L428 AbstractCegarLoop]: === Iteration 1210 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:33,773 INFO L82 PathProgramCache]: Analyzing trace with hash -723269583, now seen corresponding path program 1204 times [2021-03-11 14:40:33,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:33,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485785507] [2021-03-11 14:40:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:33,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:33,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:33,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:33,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:33,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:33,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:33,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:33,901 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:33,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:33,972 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:33,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:34,012 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:34,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:34,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485785507] [2021-03-11 14:40:34,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:34,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:34,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844057373] [2021-03-11 14:40:34,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:34,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:34,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:34,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:34,055 INFO L87 Difference]: Start difference. First operand 387 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:34,221 INFO L93 Difference]: Finished difference Result 624 states and 1868 transitions. [2021-03-11 14:40:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:34,224 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:40:34,224 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:40:34,224 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 340.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:34,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:40:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 384. [2021-03-11 14:40:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 383 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1329 transitions. [2021-03-11 14:40:34,230 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1329 transitions. Word has length 22 [2021-03-11 14:40:34,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:34,230 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1329 transitions. [2021-03-11 14:40:34,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,230 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1329 transitions. [2021-03-11 14:40:34,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:34,231 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:34,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:34,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1209 [2021-03-11 14:40:34,231 INFO L428 AbstractCegarLoop]: === Iteration 1211 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1724976525, now seen corresponding path program 1205 times [2021-03-11 14:40:34,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:34,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942148153] [2021-03-11 14:40:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:34,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:34,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:34,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:34,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:34,295 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:34,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:34,358 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:34,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:34,439 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:34,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:34,498 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:34,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:34,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942148153] [2021-03-11 14:40:34,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:34,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:34,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310904204] [2021-03-11 14:40:34,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:34,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:34,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:34,554 INFO L87 Difference]: Start difference. First operand 384 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:34,753 INFO L93 Difference]: Finished difference Result 618 states and 1856 transitions. [2021-03-11 14:40:34,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:34,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:34,757 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:40:34,757 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:40:34,757 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 394.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:40:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 386. [2021-03-11 14:40:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4597402597402596) internal successors, (1332), 385 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1332 transitions. [2021-03-11 14:40:34,763 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1332 transitions. Word has length 22 [2021-03-11 14:40:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:34,763 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1332 transitions. [2021-03-11 14:40:34,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:34,763 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1332 transitions. [2021-03-11 14:40:34,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:34,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:34,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:34,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1210 [2021-03-11 14:40:34,764 INFO L428 AbstractCegarLoop]: === Iteration 1212 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:34,764 INFO L82 PathProgramCache]: Analyzing trace with hash 877811489, now seen corresponding path program 1206 times [2021-03-11 14:40:34,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:34,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026534481] [2021-03-11 14:40:34,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:34,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:34,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:34,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:34,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:34,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:34,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:34,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:34,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:34,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:34,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:35,032 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:35,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:35,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026534481] [2021-03-11 14:40:35,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:35,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:35,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346307015] [2021-03-11 14:40:35,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:35,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:35,087 INFO L87 Difference]: Start difference. First operand 386 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:35,277 INFO L93 Difference]: Finished difference Result 622 states and 1862 transitions. [2021-03-11 14:40:35,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:35,280 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:35,281 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:40:35,281 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:40:35,281 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 387.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:35,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:40:35,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 382. [2021-03-11 14:40:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4750656167979) internal successors, (1324), 381 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1324 transitions. [2021-03-11 14:40:35,287 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1324 transitions. Word has length 22 [2021-03-11 14:40:35,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:35,287 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1324 transitions. [2021-03-11 14:40:35,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1324 transitions. [2021-03-11 14:40:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:35,288 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:35,288 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:35,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1211 [2021-03-11 14:40:35,288 INFO L428 AbstractCegarLoop]: === Iteration 1213 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:35,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:35,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1331642835, now seen corresponding path program 1207 times [2021-03-11 14:40:35,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:35,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285288919] [2021-03-11 14:40:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:35,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:35,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:35,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:35,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:35,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:35,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:35,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:35,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:35,439 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:35,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:35,496 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:35,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:35,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285288919] [2021-03-11 14:40:35,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:35,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:35,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179334538] [2021-03-11 14:40:35,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:35,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:35,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:35,550 INFO L87 Difference]: Start difference. First operand 382 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:35,695 INFO L93 Difference]: Finished difference Result 614 states and 1850 transitions. [2021-03-11 14:40:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:35,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:35,697 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:40:35,697 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:40:35,697 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 306.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:40:35,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 386. [2021-03-11 14:40:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.464935064935065) internal successors, (1334), 385 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1334 transitions. [2021-03-11 14:40:35,703 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:35,704 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1334 transitions. [2021-03-11 14:40:35,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1334 transitions. [2021-03-11 14:40:35,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:35,704 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:35,704 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:35,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1212 [2021-03-11 14:40:35,704 INFO L428 AbstractCegarLoop]: === Iteration 1214 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:35,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:35,704 INFO L82 PathProgramCache]: Analyzing trace with hash 829101283, now seen corresponding path program 1208 times [2021-03-11 14:40:35,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:35,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376790339] [2021-03-11 14:40:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:35,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:35,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:35,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:35,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:35,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:35,761 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:35,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:35,799 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:35,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:35,846 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:35,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:35,904 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:35,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:35,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376790339] [2021-03-11 14:40:35,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:35,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:35,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882131376] [2021-03-11 14:40:35,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:35,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:35,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:35,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:35,959 INFO L87 Difference]: Start difference. First operand 386 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:36,182 INFO L93 Difference]: Finished difference Result 613 states and 1846 transitions. [2021-03-11 14:40:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:36,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:36,185 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:40:36,185 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:40:36,185 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 319.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:40:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 384. [2021-03-11 14:40:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 383 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1329 transitions. [2021-03-11 14:40:36,191 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1329 transitions. Word has length 22 [2021-03-11 14:40:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:36,191 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1329 transitions. [2021-03-11 14:40:36,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1329 transitions. [2021-03-11 14:40:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:36,192 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:36,192 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:36,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1213 [2021-03-11 14:40:36,192 INFO L428 AbstractCegarLoop]: === Iteration 1215 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1950631929, now seen corresponding path program 1209 times [2021-03-11 14:40:36,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:36,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181125166] [2021-03-11 14:40:36,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:36,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:36,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:36,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:36,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:36,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:36,297 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:36,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:36,344 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:36,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:36,405 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:36,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:36,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181125166] [2021-03-11 14:40:36,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:36,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:36,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255570125] [2021-03-11 14:40:36,461 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:36,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:36,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:36,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:36,461 INFO L87 Difference]: Start difference. First operand 384 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:36,662 INFO L93 Difference]: Finished difference Result 617 states and 1855 transitions. [2021-03-11 14:40:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:36,666 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:40:36,666 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:40:36,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 332.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:36,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:40:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 387. [2021-03-11 14:40:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4559585492227978) internal successors, (1334), 386 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1334 transitions. [2021-03-11 14:40:36,672 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:36,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:36,672 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1334 transitions. [2021-03-11 14:40:36,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1334 transitions. [2021-03-11 14:40:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:36,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:36,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:36,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1214 [2021-03-11 14:40:36,673 INFO L428 AbstractCegarLoop]: === Iteration 1216 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:36,673 INFO L82 PathProgramCache]: Analyzing trace with hash 290709855, now seen corresponding path program 1210 times [2021-03-11 14:40:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:36,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383568574] [2021-03-11 14:40:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:36,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:36,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:36,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:36,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:36,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:36,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:36,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:36,778 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:36,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:36,825 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:36,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:36,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:36,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:36,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383568574] [2021-03-11 14:40:36,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:36,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:36,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706615118] [2021-03-11 14:40:36,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:36,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:36,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:36,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:36,939 INFO L87 Difference]: Start difference. First operand 387 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:37,138 INFO L93 Difference]: Finished difference Result 618 states and 1854 transitions. [2021-03-11 14:40:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:37,141 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:40:37,141 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:40:37,141 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 332.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:40:37,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 384. [2021-03-11 14:40:37,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.464751958224543) internal successors, (1327), 383 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1327 transitions. [2021-03-11 14:40:37,147 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1327 transitions. Word has length 22 [2021-03-11 14:40:37,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:37,147 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1327 transitions. [2021-03-11 14:40:37,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1327 transitions. [2021-03-11 14:40:37,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:37,148 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:37,148 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:37,148 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1215 [2021-03-11 14:40:37,148 INFO L428 AbstractCegarLoop]: === Iteration 1217 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:37,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1899132385, now seen corresponding path program 1211 times [2021-03-11 14:40:37,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:37,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905603886] [2021-03-11 14:40:37,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:37,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:37,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:37,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:37,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:37,215 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:37,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:37,253 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:37,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:37,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:37,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:37,359 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:37,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:37,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905603886] [2021-03-11 14:40:37,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:37,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:37,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294171935] [2021-03-11 14:40:37,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:37,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:37,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:37,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:37,417 INFO L87 Difference]: Start difference. First operand 384 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:37,626 INFO L93 Difference]: Finished difference Result 614 states and 1846 transitions. [2021-03-11 14:40:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:37,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:37,629 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:40:37,629 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:40:37,629 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 334.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:40:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 386. [2021-03-11 14:40:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4545454545454546) internal successors, (1330), 385 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1330 transitions. [2021-03-11 14:40:37,636 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1330 transitions. Word has length 22 [2021-03-11 14:40:37,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:37,636 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1330 transitions. [2021-03-11 14:40:37,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1330 transitions. [2021-03-11 14:40:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:37,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:37,636 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:37,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1216 [2021-03-11 14:40:37,636 INFO L428 AbstractCegarLoop]: === Iteration 1218 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:37,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:37,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1725884693, now seen corresponding path program 1212 times [2021-03-11 14:40:37,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:37,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605700283] [2021-03-11 14:40:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:37,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:37,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:37,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:37,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:37,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:37,685 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:37,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:37,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:37,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:37,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:37,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:37,788 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:37,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:37,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:37,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605700283] [2021-03-11 14:40:37,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:37,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:37,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881916453] [2021-03-11 14:40:37,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:37,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:37,831 INFO L87 Difference]: Start difference. First operand 386 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:38,021 INFO L93 Difference]: Finished difference Result 616 states and 1848 transitions. [2021-03-11 14:40:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:38,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:38,024 INFO L225 Difference]: With dead ends: 616 [2021-03-11 14:40:38,024 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:40:38,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 262.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:40:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 382. [2021-03-11 14:40:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4698162729658795) internal successors, (1322), 381 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1322 transitions. [2021-03-11 14:40:38,030 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1322 transitions. Word has length 22 [2021-03-11 14:40:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:38,030 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1322 transitions. [2021-03-11 14:40:38,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1322 transitions. [2021-03-11 14:40:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:38,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:38,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:38,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1217 [2021-03-11 14:40:38,031 INFO L428 AbstractCegarLoop]: === Iteration 1219 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:38,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:38,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1657239059, now seen corresponding path program 1213 times [2021-03-11 14:40:38,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:38,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929851126] [2021-03-11 14:40:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:38,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:38,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:38,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:38,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:38,098 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:38,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:38,136 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:38,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:38,215 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:38,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:38,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:38,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:38,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929851126] [2021-03-11 14:40:38,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:38,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:38,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361887354] [2021-03-11 14:40:38,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:38,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:38,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:38,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:38,329 INFO L87 Difference]: Start difference. First operand 382 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:38,519 INFO L93 Difference]: Finished difference Result 627 states and 1880 transitions. [2021-03-11 14:40:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:38,522 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:38,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:38,523 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:40:38,523 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:40:38,523 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 362.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:40:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 388. [2021-03-11 14:40:38,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4573643410852712) internal successors, (1338), 387 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1338 transitions. [2021-03-11 14:40:38,529 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1338 transitions. Word has length 22 [2021-03-11 14:40:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:38,529 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1338 transitions. [2021-03-11 14:40:38,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1338 transitions. [2021-03-11 14:40:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:38,530 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:38,530 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:38,530 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1218 [2021-03-11 14:40:38,530 INFO L428 AbstractCegarLoop]: === Iteration 1220 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash 605427837, now seen corresponding path program 1214 times [2021-03-11 14:40:38,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:38,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724434431] [2021-03-11 14:40:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:38,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:38,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:38,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:38,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:38,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:38,598 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:38,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:38,633 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:38,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:38,713 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:38,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:38,772 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:38,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:38,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724434431] [2021-03-11 14:40:38,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:38,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:38,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306120392] [2021-03-11 14:40:38,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:38,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:38,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:38,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:38,826 INFO L87 Difference]: Start difference. First operand 388 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:39,022 INFO L93 Difference]: Finished difference Result 630 states and 1883 transitions. [2021-03-11 14:40:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:39,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:39,025 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:40:39,025 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:40:39,025 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 362.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:40:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 385. [2021-03-11 14:40:39,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4635416666666665) internal successors, (1330), 384 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1330 transitions. [2021-03-11 14:40:39,032 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1330 transitions. Word has length 22 [2021-03-11 14:40:39,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:39,032 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1330 transitions. [2021-03-11 14:40:39,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1330 transitions. [2021-03-11 14:40:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:39,032 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:39,032 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:39,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1219 [2021-03-11 14:40:39,032 INFO L428 AbstractCegarLoop]: === Iteration 1221 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:39,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:39,032 INFO L82 PathProgramCache]: Analyzing trace with hash -24597851, now seen corresponding path program 1215 times [2021-03-11 14:40:39,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:39,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550585908] [2021-03-11 14:40:39,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:39,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:39,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:39,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:39,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:39,100 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:39,137 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:39,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:39,191 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:39,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:39,252 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:39,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:39,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550585908] [2021-03-11 14:40:39,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:39,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:39,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934910802] [2021-03-11 14:40:39,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:39,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:39,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:39,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:39,296 INFO L87 Difference]: Start difference. First operand 385 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:39,432 INFO L93 Difference]: Finished difference Result 625 states and 1873 transitions. [2021-03-11 14:40:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:39,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:39,434 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:40:39,435 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:40:39,435 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 306.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:40:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 388. [2021-03-11 14:40:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.449612403100775) internal successors, (1335), 387 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1335 transitions. [2021-03-11 14:40:39,441 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1335 transitions. Word has length 22 [2021-03-11 14:40:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:39,441 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1335 transitions. [2021-03-11 14:40:39,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1335 transitions. [2021-03-11 14:40:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:39,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:39,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:39,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1220 [2021-03-11 14:40:39,442 INFO L428 AbstractCegarLoop]: === Iteration 1222 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2078223363, now seen corresponding path program 1216 times [2021-03-11 14:40:39,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:39,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793833327] [2021-03-11 14:40:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:39,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:39,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:39,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:39,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:39,514 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:39,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:39,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:39,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:39,603 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:39,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:39,663 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:39,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:39,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793833327] [2021-03-11 14:40:39,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:39,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:39,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148123112] [2021-03-11 14:40:39,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:39,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:39,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:39,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:39,720 INFO L87 Difference]: Start difference. First operand 388 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:39,936 INFO L93 Difference]: Finished difference Result 626 states and 1872 transitions. [2021-03-11 14:40:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:39,938 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:39,939 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:40:39,939 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:40:39,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:40:39,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 385. [2021-03-11 14:40:39,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:40:39,946 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:40:39,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:39,946 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:40:39,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:39,946 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:40:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:39,946 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:39,947 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:39,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1221 [2021-03-11 14:40:39,947 INFO L428 AbstractCegarLoop]: === Iteration 1223 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:39,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1367546405, now seen corresponding path program 1217 times [2021-03-11 14:40:39,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:39,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222885005] [2021-03-11 14:40:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:39,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:39,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:39,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:39,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:39,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:40,025 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:40,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:40,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:40,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:40,112 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:40,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:40,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:40,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:40,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222885005] [2021-03-11 14:40:40,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:40,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:40,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789453995] [2021-03-11 14:40:40,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:40,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:40,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:40,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:40,228 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:40,444 INFO L93 Difference]: Finished difference Result 632 states and 1885 transitions. [2021-03-11 14:40:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:40,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:40,448 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:40:40,448 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:40:40,448 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:40:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 389. [2021-03-11 14:40:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4381443298969074) internal successors, (1334), 388 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1334 transitions. [2021-03-11 14:40:40,454 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:40,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:40,454 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1334 transitions. [2021-03-11 14:40:40,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,455 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1334 transitions. [2021-03-11 14:40:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:40,455 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:40,455 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:40,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1222 [2021-03-11 14:40:40,455 INFO L428 AbstractCegarLoop]: === Iteration 1224 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:40,455 INFO L82 PathProgramCache]: Analyzing trace with hash -324632877, now seen corresponding path program 1218 times [2021-03-11 14:40:40,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:40,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714545741] [2021-03-11 14:40:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:40,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:40,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:40,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:40,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:40,526 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:40,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:40,564 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:40,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:40,613 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:40,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:40,673 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:40,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:40,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714545741] [2021-03-11 14:40:40,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:40,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:40,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238310299] [2021-03-11 14:40:40,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:40,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:40,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:40,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:40,729 INFO L87 Difference]: Start difference. First operand 389 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:40,925 INFO L93 Difference]: Finished difference Result 630 states and 1877 transitions. [2021-03-11 14:40:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:40,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:40,929 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:40:40,929 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:40:40,929 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 343.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:40,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:40:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 382. [2021-03-11 14:40:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4645669291338583) internal successors, (1320), 381 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1320 transitions. [2021-03-11 14:40:40,935 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1320 transitions. Word has length 22 [2021-03-11 14:40:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:40,935 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1320 transitions. [2021-03-11 14:40:40,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1320 transitions. [2021-03-11 14:40:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:40,936 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:40,936 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:40,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1223 [2021-03-11 14:40:40,936 INFO L428 AbstractCegarLoop]: === Iteration 1225 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:40,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:40,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1381216565, now seen corresponding path program 1219 times [2021-03-11 14:40:40,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:40,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304015212] [2021-03-11 14:40:40,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:40,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:40,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:40,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:40,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:40,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:40,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:41,010 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:41,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:41,072 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:41,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:41,120 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:41,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:41,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304015212] [2021-03-11 14:40:41,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:41,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:41,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029619198] [2021-03-11 14:40:41,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:41,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:41,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:41,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:41,174 INFO L87 Difference]: Start difference. First operand 382 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:41,402 INFO L93 Difference]: Finished difference Result 620 states and 1859 transitions. [2021-03-11 14:40:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:41,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:41,406 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:40:41,406 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:40:41,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 320.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:40:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 386. [2021-03-11 14:40:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4545454545454546) internal successors, (1330), 385 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1330 transitions. [2021-03-11 14:40:41,419 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1330 transitions. Word has length 22 [2021-03-11 14:40:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:41,419 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1330 transitions. [2021-03-11 14:40:41,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1330 transitions. [2021-03-11 14:40:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:41,420 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:41,420 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:41,420 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1224 [2021-03-11 14:40:41,420 INFO L428 AbstractCegarLoop]: === Iteration 1226 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -310962717, now seen corresponding path program 1220 times [2021-03-11 14:40:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:41,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281006277] [2021-03-11 14:40:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:41,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:41,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:41,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:41,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:41,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:41,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:41,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:41,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:41,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:41,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:41,541 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:41,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:41,632 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:41,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:41,703 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:41,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:41,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281006277] [2021-03-11 14:40:41,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:41,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:41,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410893250] [2021-03-11 14:40:41,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:41,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:41,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:41,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:41,768 INFO L87 Difference]: Start difference. First operand 386 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:41,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:41,992 INFO L93 Difference]: Finished difference Result 624 states and 1865 transitions. [2021-03-11 14:40:41,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:41,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:41,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:41,996 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:40:41,996 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:40:41,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 424.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:41,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:40:42,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 384. [2021-03-11 14:40:42,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4595300261096606) internal successors, (1325), 383 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1325 transitions. [2021-03-11 14:40:42,002 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1325 transitions. Word has length 22 [2021-03-11 14:40:42,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:42,003 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1325 transitions. [2021-03-11 14:40:42,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,003 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1325 transitions. [2021-03-11 14:40:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:42,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:42,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:42,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1225 [2021-03-11 14:40:42,003 INFO L428 AbstractCegarLoop]: === Iteration 1227 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:42,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:42,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1305435549, now seen corresponding path program 1221 times [2021-03-11 14:40:42,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:42,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777813151] [2021-03-11 14:40:42,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:42,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:42,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:42,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:42,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:42,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:42,117 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:42,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:42,166 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:42,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:42,230 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:42,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:42,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777813151] [2021-03-11 14:40:42,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:42,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:42,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070087938] [2021-03-11 14:40:42,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:42,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:42,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:42,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:42,286 INFO L87 Difference]: Start difference. First operand 384 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:42,505 INFO L93 Difference]: Finished difference Result 618 states and 1853 transitions. [2021-03-11 14:40:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:42,507 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:40:42,507 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:40:42,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 352.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:42,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:40:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 386. [2021-03-11 14:40:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.449350649350649) internal successors, (1328), 385 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1328 transitions. [2021-03-11 14:40:42,514 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1328 transitions. Word has length 22 [2021-03-11 14:40:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:42,514 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1328 transitions. [2021-03-11 14:40:42,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1328 transitions. [2021-03-11 14:40:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:42,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:42,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:42,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1226 [2021-03-11 14:40:42,515 INFO L428 AbstractCegarLoop]: === Iteration 1228 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:42,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1478683241, now seen corresponding path program 1222 times [2021-03-11 14:40:42,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:42,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34708169] [2021-03-11 14:40:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:42,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:42,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:42,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:42,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:42,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:42,602 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:42,636 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:42,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:42,685 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:42,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:42,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34708169] [2021-03-11 14:40:42,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:42,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:42,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97918064] [2021-03-11 14:40:42,726 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:42,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:42,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:42,726 INFO L87 Difference]: Start difference. First operand 386 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:42,910 INFO L93 Difference]: Finished difference Result 620 states and 1855 transitions. [2021-03-11 14:40:42,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:42,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:42,914 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:40:42,914 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:40:42,914 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 283.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:40:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 384. [2021-03-11 14:40:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.454308093994778) internal successors, (1323), 383 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1323 transitions. [2021-03-11 14:40:42,920 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1323 transitions. Word has length 22 [2021-03-11 14:40:42,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:42,920 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1323 transitions. [2021-03-11 14:40:42,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:42,920 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1323 transitions. [2021-03-11 14:40:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:42,921 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:42,921 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:42,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1227 [2021-03-11 14:40:42,921 INFO L428 AbstractCegarLoop]: === Iteration 1229 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:42,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1386673873, now seen corresponding path program 1223 times [2021-03-11 14:40:42,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:42,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289670853] [2021-03-11 14:40:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:42,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:42,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:42,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:42,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:42,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:42,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:43,029 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:43,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:43,080 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:43,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:43,143 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:43,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:43,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289670853] [2021-03-11 14:40:43,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:43,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:43,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147899366] [2021-03-11 14:40:43,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:43,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:43,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:43,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:43,201 INFO L87 Difference]: Start difference. First operand 384 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:43,428 INFO L93 Difference]: Finished difference Result 628 states and 1873 transitions. [2021-03-11 14:40:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:43,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:43,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:43,431 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:40:43,431 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:40:43,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 354.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:40:43,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 388. [2021-03-11 14:40:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4366925064599485) internal successors, (1330), 387 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1330 transitions. [2021-03-11 14:40:43,438 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1330 transitions. Word has length 22 [2021-03-11 14:40:43,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:43,438 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1330 transitions. [2021-03-11 14:40:43,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1330 transitions. [2021-03-11 14:40:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:43,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:43,438 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:43,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1228 [2021-03-11 14:40:43,438 INFO L428 AbstractCegarLoop]: === Iteration 1230 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:43,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:43,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2064240099, now seen corresponding path program 1224 times [2021-03-11 14:40:43,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:43,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863327739] [2021-03-11 14:40:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:43,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:43,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:43,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:43,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:40:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:40:43,548 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:43,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:43,598 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:43,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:43,659 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:43,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:43,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863327739] [2021-03-11 14:40:43,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:43,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:43,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338019290] [2021-03-11 14:40:43,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:43,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:43,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:43,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:43,717 INFO L87 Difference]: Start difference. First operand 388 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:43,913 INFO L93 Difference]: Finished difference Result 626 states and 1865 transitions. [2021-03-11 14:40:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:43,916 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:40:43,916 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:40:43,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 344.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:40:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 380. [2021-03-11 14:40:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.469656992084433) internal successors, (1315), 379 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1315 transitions. [2021-03-11 14:40:43,923 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1315 transitions. Word has length 22 [2021-03-11 14:40:43,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:43,923 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1315 transitions. [2021-03-11 14:40:43,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1315 transitions. [2021-03-11 14:40:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:43,923 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:43,923 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:43,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1229 [2021-03-11 14:40:43,923 INFO L428 AbstractCegarLoop]: === Iteration 1231 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:43,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1084008041, now seen corresponding path program 1225 times [2021-03-11 14:40:43,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:43,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972567930] [2021-03-11 14:40:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:43,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:43,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:43,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:43,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:43,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:43,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:44,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:44,057 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:44,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:44,090 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:44,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:44,131 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:44,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:44,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972567930] [2021-03-11 14:40:44,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:44,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:44,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348351167] [2021-03-11 14:40:44,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:44,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:44,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:44,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:44,170 INFO L87 Difference]: Start difference. First operand 380 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:44,349 INFO L93 Difference]: Finished difference Result 629 states and 1878 transitions. [2021-03-11 14:40:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:44,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:44,352 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:40:44,352 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:40:44,352 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 310.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:44,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:40:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 388. [2021-03-11 14:40:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4651162790697674) internal successors, (1341), 387 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1341 transitions. [2021-03-11 14:40:44,359 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1341 transitions. Word has length 22 [2021-03-11 14:40:44,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:44,359 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1341 transitions. [2021-03-11 14:40:44,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1341 transitions. [2021-03-11 14:40:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:44,359 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:44,359 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:44,359 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1230 [2021-03-11 14:40:44,359 INFO L428 AbstractCegarLoop]: === Iteration 1232 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:44,360 INFO L82 PathProgramCache]: Analyzing trace with hash 581466489, now seen corresponding path program 1226 times [2021-03-11 14:40:44,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:44,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416813618] [2021-03-11 14:40:44,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:44,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:44,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:44,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:44,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:44,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:44,452 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:44,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:44,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:44,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:44,564 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:44,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:44,624 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:44,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416813618] [2021-03-11 14:40:44,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:44,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:44,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663023604] [2021-03-11 14:40:44,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:44,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:44,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:44,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:44,681 INFO L87 Difference]: Start difference. First operand 388 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:44,889 INFO L93 Difference]: Finished difference Result 628 states and 1874 transitions. [2021-03-11 14:40:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:44,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:44,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:44,893 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:40:44,893 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:40:44,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 392.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:40:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 386. [2021-03-11 14:40:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.47012987012987) internal successors, (1336), 385 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1336 transitions. [2021-03-11 14:40:44,900 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1336 transitions. Word has length 22 [2021-03-11 14:40:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:44,900 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1336 transitions. [2021-03-11 14:40:44,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1336 transitions. [2021-03-11 14:40:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:44,900 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:44,900 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:44,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1231 [2021-03-11 14:40:44,900 INFO L428 AbstractCegarLoop]: === Iteration 1233 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:44,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:44,901 INFO L82 PathProgramCache]: Analyzing trace with hash -516429813, now seen corresponding path program 1227 times [2021-03-11 14:40:44,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:44,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282233629] [2021-03-11 14:40:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:44,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:44,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:44,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:44,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:44,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:44,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:44,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:45,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:45,067 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:45,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:45,155 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:45,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:45,214 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:45,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:45,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282233629] [2021-03-11 14:40:45,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:45,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:45,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710306069] [2021-03-11 14:40:45,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:45,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:45,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:45,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:45,271 INFO L87 Difference]: Start difference. First operand 386 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:45,464 INFO L93 Difference]: Finished difference Result 634 states and 1887 transitions. [2021-03-11 14:40:45,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:45,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:45,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:45,467 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:40:45,468 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:40:45,468 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 435.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:45,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:40:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 389. [2021-03-11 14:40:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4561855670103094) internal successors, (1341), 388 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1341 transitions. [2021-03-11 14:40:45,474 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1341 transitions. Word has length 22 [2021-03-11 14:40:45,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:45,474 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1341 transitions. [2021-03-11 14:40:45,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1341 transitions. [2021-03-11 14:40:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:45,475 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:45,475 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:45,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1232 [2021-03-11 14:40:45,475 INFO L428 AbstractCegarLoop]: === Iteration 1234 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1568241035, now seen corresponding path program 1228 times [2021-03-11 14:40:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:45,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018304287] [2021-03-11 14:40:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:45,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:45,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:45,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:45,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:45,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:45,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:45,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:45,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:45,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:45,658 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:45,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:45,701 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:45,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:45,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018304287] [2021-03-11 14:40:45,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:45,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:45,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275643870] [2021-03-11 14:40:45,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:45,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:45,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:45,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:45,757 INFO L87 Difference]: Start difference. First operand 389 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:45,964 INFO L93 Difference]: Finished difference Result 637 states and 1890 transitions. [2021-03-11 14:40:45,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:45,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:45,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:45,967 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:40:45,967 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:40:45,967 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 352.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:45,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:40:45,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 386. [2021-03-11 14:40:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.464935064935065) internal successors, (1334), 385 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1334 transitions. [2021-03-11 14:40:45,974 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:45,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:45,974 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1334 transitions. [2021-03-11 14:40:45,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1334 transitions. [2021-03-11 14:40:45,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:45,974 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:45,974 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:45,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1233 [2021-03-11 14:40:45,974 INFO L428 AbstractCegarLoop]: === Iteration 1235 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:45,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1725019319, now seen corresponding path program 1229 times [2021-03-11 14:40:45,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:45,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905655703] [2021-03-11 14:40:45,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:45,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:45,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:45,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:45,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:45,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:46,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:46,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:46,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:46,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:46,138 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:46,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:46,226 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:46,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:46,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:46,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:46,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905655703] [2021-03-11 14:40:46,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:46,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:46,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111508809] [2021-03-11 14:40:46,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:46,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:46,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:46,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:46,352 INFO L87 Difference]: Start difference. First operand 386 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:46,584 INFO L93 Difference]: Finished difference Result 631 states and 1878 transitions. [2021-03-11 14:40:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:46,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:46,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:46,588 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:40:46,588 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:40:46,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 444.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:40:46,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 388. [2021-03-11 14:40:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.454780361757106) internal successors, (1337), 387 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1337 transitions. [2021-03-11 14:40:46,597 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1337 transitions. Word has length 22 [2021-03-11 14:40:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:46,597 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1337 transitions. [2021-03-11 14:40:46,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1337 transitions. [2021-03-11 14:40:46,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:46,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:46,598 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:46,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1234 [2021-03-11 14:40:46,598 INFO L428 AbstractCegarLoop]: === Iteration 1236 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash 32840037, now seen corresponding path program 1230 times [2021-03-11 14:40:46,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:46,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804402034] [2021-03-11 14:40:46,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:46,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:46,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:46,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:46,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:46,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:46,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:46,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:46,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:46,691 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:40:46,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:40:46,757 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:46,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:46,843 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:46,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:46,906 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:46,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:46,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804402034] [2021-03-11 14:40:46,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:46,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:46,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670297832] [2021-03-11 14:40:46,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:46,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:46,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:46,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:46,964 INFO L87 Difference]: Start difference. First operand 388 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:47,108 INFO L93 Difference]: Finished difference Result 635 states and 1884 transitions. [2021-03-11 14:40:47,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:47,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:47,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:47,110 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:40:47,110 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:40:47,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 405.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:40:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 384. [2021-03-11 14:40:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4699738903394257) internal successors, (1329), 383 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1329 transitions. [2021-03-11 14:40:47,117 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1329 transitions. Word has length 22 [2021-03-11 14:40:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:47,117 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1329 transitions. [2021-03-11 14:40:47,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1329 transitions. [2021-03-11 14:40:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:47,117 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:47,117 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:47,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1235 [2021-03-11 14:40:47,117 INFO L428 AbstractCegarLoop]: === Iteration 1237 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:47,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash 43772243, now seen corresponding path program 1231 times [2021-03-11 14:40:47,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:47,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114497974] [2021-03-11 14:40:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:47,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:47,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:47,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:47,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:47,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:47,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:47,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:47,262 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:47,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:47,308 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:47,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:47,370 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:47,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:47,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114497974] [2021-03-11 14:40:47,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:47,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:47,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496517593] [2021-03-11 14:40:47,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:47,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:47,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:47,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:47,430 INFO L87 Difference]: Start difference. First operand 384 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:47,683 INFO L93 Difference]: Finished difference Result 634 states and 1886 transitions. [2021-03-11 14:40:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:47,686 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:40:47,687 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:40:47,687 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 391.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:40:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 389. [2021-03-11 14:40:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4587628865979383) internal successors, (1342), 388 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1342 transitions. [2021-03-11 14:40:47,693 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1342 transitions. Word has length 22 [2021-03-11 14:40:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:47,693 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1342 transitions. [2021-03-11 14:40:47,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1342 transitions. [2021-03-11 14:40:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:47,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:47,694 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:47,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1236 [2021-03-11 14:40:47,694 INFO L428 AbstractCegarLoop]: === Iteration 1238 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:47,694 INFO L82 PathProgramCache]: Analyzing trace with hash -458769309, now seen corresponding path program 1232 times [2021-03-11 14:40:47,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:47,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607300049] [2021-03-11 14:40:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:47,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:47,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:47,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:47,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:47,736 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:47,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:47,787 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:47,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:47,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:47,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:47,897 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:47,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:47,956 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:47,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:48,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607300049] [2021-03-11 14:40:48,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:48,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:48,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896680108] [2021-03-11 14:40:48,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:48,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:48,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:48,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:48,014 INFO L87 Difference]: Start difference. First operand 389 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:48,232 INFO L93 Difference]: Finished difference Result 633 states and 1882 transitions. [2021-03-11 14:40:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:48,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:48,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:48,235 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:40:48,236 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:40:48,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 386.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:48,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:40:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 387. [2021-03-11 14:40:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4637305699481864) internal successors, (1337), 386 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1337 transitions. [2021-03-11 14:40:48,242 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1337 transitions. Word has length 22 [2021-03-11 14:40:48,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:48,242 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1337 transitions. [2021-03-11 14:40:48,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1337 transitions. [2021-03-11 14:40:48,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:48,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:48,243 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:48,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1237 [2021-03-11 14:40:48,243 INFO L428 AbstractCegarLoop]: === Iteration 1239 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:48,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:48,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2144410933, now seen corresponding path program 1233 times [2021-03-11 14:40:48,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:48,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880224850] [2021-03-11 14:40:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:48,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:48,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:48,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:48,285 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:48,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:48,336 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:48,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:48,395 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:48,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:48,471 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:48,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:48,531 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:48,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:48,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880224850] [2021-03-11 14:40:48,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:48,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:48,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075666566] [2021-03-11 14:40:48,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:48,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:48,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:48,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:48,590 INFO L87 Difference]: Start difference. First operand 387 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:48,731 INFO L93 Difference]: Finished difference Result 642 states and 1900 transitions. [2021-03-11 14:40:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:48,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:48,733 INFO L225 Difference]: With dead ends: 642 [2021-03-11 14:40:48,733 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:40:48,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 387.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:40:48,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 391. [2021-03-11 14:40:48,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4461538461538463) internal successors, (1344), 390 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1344 transitions. [2021-03-11 14:40:48,740 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1344 transitions. Word has length 22 [2021-03-11 14:40:48,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:48,740 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1344 transitions. [2021-03-11 14:40:48,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:48,740 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1344 transitions. [2021-03-11 14:40:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:48,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:48,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:48,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1238 [2021-03-11 14:40:48,741 INFO L428 AbstractCegarLoop]: === Iteration 1240 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:48,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2071103521, now seen corresponding path program 1234 times [2021-03-11 14:40:48,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:48,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75964374] [2021-03-11 14:40:48,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:48,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:48,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:48,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:48,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:48,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:48,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:48,813 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:48,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:48,873 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:48,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:48,945 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:48,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:49,008 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:49,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:49,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75964374] [2021-03-11 14:40:49,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:49,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:49,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981213776] [2021-03-11 14:40:49,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:49,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:49,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:49,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:49,066 INFO L87 Difference]: Start difference. First operand 391 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:49,239 INFO L93 Difference]: Finished difference Result 647 states and 1906 transitions. [2021-03-11 14:40:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:49,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:49,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:49,243 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:40:49,243 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:40:49,243 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 355.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:49,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:40:49,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 387. [2021-03-11 14:40:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4559585492227978) internal successors, (1334), 386 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1334 transitions. [2021-03-11 14:40:49,249 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:49,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:49,249 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1334 transitions. [2021-03-11 14:40:49,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,249 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1334 transitions. [2021-03-11 14:40:49,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:49,250 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:49,250 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:49,250 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1239 [2021-03-11 14:40:49,250 INFO L428 AbstractCegarLoop]: === Iteration 1241 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash 632268001, now seen corresponding path program 1235 times [2021-03-11 14:40:49,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:49,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409507039] [2021-03-11 14:40:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:49,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:49,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:49,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:49,292 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:49,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:49,347 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:49,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:49,408 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:49,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:49,494 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:49,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:49,554 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:49,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:49,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409507039] [2021-03-11 14:40:49,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:49,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:49,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143179992] [2021-03-11 14:40:49,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:49,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:49,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:49,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:49,616 INFO L87 Difference]: Start difference. First operand 387 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:49,822 INFO L93 Difference]: Finished difference Result 639 states and 1890 transitions. [2021-03-11 14:40:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:49,825 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:49,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:49,826 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:40:49,826 INFO L226 Difference]: Without dead ends: 629 [2021-03-11 14:40:49,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 435.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-03-11 14:40:49,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 390. [2021-03-11 14:40:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.442159383033419) internal successors, (1339), 389 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1339 transitions. [2021-03-11 14:40:49,832 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1339 transitions. Word has length 22 [2021-03-11 14:40:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:49,832 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1339 transitions. [2021-03-11 14:40:49,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1339 transitions. [2021-03-11 14:40:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:49,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:49,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:49,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1240 [2021-03-11 14:40:49,833 INFO L428 AbstractCegarLoop]: === Iteration 1242 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:49,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:49,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1948425305, now seen corresponding path program 1236 times [2021-03-11 14:40:49,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:49,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567815100] [2021-03-11 14:40:49,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:49,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:49,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:49,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:49,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:49,876 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:49,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:49,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:49,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:49,961 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:49,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:50,030 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:50,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:50,075 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:50,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:50,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567815100] [2021-03-11 14:40:50,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:50,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:50,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533369954] [2021-03-11 14:40:50,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:50,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:50,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:50,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:50,121 INFO L87 Difference]: Start difference. First operand 390 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:50,295 INFO L93 Difference]: Finished difference Result 645 states and 1899 transitions. [2021-03-11 14:40:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:50,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:50,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:50,299 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:40:50,299 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:40:50,299 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 314.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:50,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:40:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 384. [2021-03-11 14:40:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.462140992167102) internal successors, (1326), 383 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1326 transitions. [2021-03-11 14:40:50,305 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1326 transitions. Word has length 22 [2021-03-11 14:40:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:50,306 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1326 transitions. [2021-03-11 14:40:50,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1326 transitions. [2021-03-11 14:40:50,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:50,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:50,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:50,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1241 [2021-03-11 14:40:50,306 INFO L428 AbstractCegarLoop]: === Iteration 1243 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:50,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:50,306 INFO L82 PathProgramCache]: Analyzing trace with hash 369368467, now seen corresponding path program 1237 times [2021-03-11 14:40:50,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:50,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202675797] [2021-03-11 14:40:50,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:50,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:50,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:50,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:50,353 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:50,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:50,406 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:50,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:50,475 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:50,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:50,560 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:50,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:50,622 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:50,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:50,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202675797] [2021-03-11 14:40:50,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:50,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:50,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232708299] [2021-03-11 14:40:50,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:50,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:50,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:50,683 INFO L87 Difference]: Start difference. First operand 384 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:50,890 INFO L93 Difference]: Finished difference Result 651 states and 1924 transitions. [2021-03-11 14:40:50,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:50,893 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:40:50,893 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:40:50,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 444.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:40:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 392. [2021-03-11 14:40:50,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.445012787723785) internal successors, (1347), 391 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1347 transitions. [2021-03-11 14:40:50,900 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1347 transitions. Word has length 22 [2021-03-11 14:40:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:50,900 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1347 transitions. [2021-03-11 14:40:50,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1347 transitions. [2021-03-11 14:40:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:50,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:50,901 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:50,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1242 [2021-03-11 14:40:50,901 INFO L428 AbstractCegarLoop]: === Iteration 1244 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:50,901 INFO L82 PathProgramCache]: Analyzing trace with hash -682442755, now seen corresponding path program 1238 times [2021-03-11 14:40:50,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:50,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560709997] [2021-03-11 14:40:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:50,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:50,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:50,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:50,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:50,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:50,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:50,996 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:50,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:51,064 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:51,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:51,148 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:51,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:51,202 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:51,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:51,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560709997] [2021-03-11 14:40:51,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:51,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:51,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766162198] [2021-03-11 14:40:51,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:51,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:51,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:51,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:51,244 INFO L87 Difference]: Start difference. First operand 392 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:51,383 INFO L93 Difference]: Finished difference Result 654 states and 1927 transitions. [2021-03-11 14:40:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:51,386 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:40:51,386 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:40:51,386 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 384.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:40:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 389. [2021-03-11 14:40:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4510309278350517) internal successors, (1339), 388 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1339 transitions. [2021-03-11 14:40:51,393 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1339 transitions. Word has length 22 [2021-03-11 14:40:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:51,393 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1339 transitions. [2021-03-11 14:40:51,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1339 transitions. [2021-03-11 14:40:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:51,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:51,393 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:51,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1243 [2021-03-11 14:40:51,393 INFO L428 AbstractCegarLoop]: === Iteration 1245 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash -218376855, now seen corresponding path program 1239 times [2021-03-11 14:40:51,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:51,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274364415] [2021-03-11 14:40:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:51,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:51,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:51,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:51,437 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:51,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:51,489 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:51,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:51,554 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:51,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:51,631 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:51,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:51,696 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:51,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:51,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274364415] [2021-03-11 14:40:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:51,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149675234] [2021-03-11 14:40:51,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:51,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:51,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:51,758 INFO L87 Difference]: Start difference. First operand 389 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:51,961 INFO L93 Difference]: Finished difference Result 654 states and 1926 transitions. [2021-03-11 14:40:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:51,964 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:51,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:51,965 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:40:51,965 INFO L226 Difference]: Without dead ends: 643 [2021-03-11 14:40:51,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 437.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-03-11 14:40:51,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 393. [2021-03-11 14:40:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.433673469387755) internal successors, (1346), 392 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1346 transitions. [2021-03-11 14:40:51,972 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1346 transitions. Word has length 22 [2021-03-11 14:40:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:51,972 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1346 transitions. [2021-03-11 14:40:51,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1346 transitions. [2021-03-11 14:40:51,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:51,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:51,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:51,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1244 [2021-03-11 14:40:51,972 INFO L428 AbstractCegarLoop]: === Iteration 1246 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:51,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:51,973 INFO L82 PathProgramCache]: Analyzing trace with hash -145069443, now seen corresponding path program 1240 times [2021-03-11 14:40:51,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:51,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989670007] [2021-03-11 14:40:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:51,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:51,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:51,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:51,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:52,017 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:52,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:52,080 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:52,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:52,149 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:52,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:52,225 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:52,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:52,288 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:52,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:52,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:52,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989670007] [2021-03-11 14:40:52,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:52,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:52,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387316864] [2021-03-11 14:40:52,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:52,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:52,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:52,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:52,347 INFO L87 Difference]: Start difference. First operand 393 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:52,513 INFO L93 Difference]: Finished difference Result 659 states and 1932 transitions. [2021-03-11 14:40:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:52,517 INFO L225 Difference]: With dead ends: 659 [2021-03-11 14:40:52,517 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:40:52,517 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 404.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:40:52,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 389. [2021-03-11 14:40:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4407216494845363) internal successors, (1335), 388 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1335 transitions. [2021-03-11 14:40:52,524 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1335 transitions. Word has length 22 [2021-03-11 14:40:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:52,524 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1335 transitions. [2021-03-11 14:40:52,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1335 transitions. [2021-03-11 14:40:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:52,524 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:52,524 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:52,524 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1245 [2021-03-11 14:40:52,524 INFO L428 AbstractCegarLoop]: === Iteration 1247 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:52,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:52,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1590087017, now seen corresponding path program 1241 times [2021-03-11 14:40:52,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:52,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143867397] [2021-03-11 14:40:52,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:52,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:52,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:52,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:52,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:52,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:52,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:52,567 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:52,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:52,621 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:52,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:52,692 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:52,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:52,745 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:52,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:52,800 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:52,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:52,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143867397] [2021-03-11 14:40:52,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:52,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:52,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815532505] [2021-03-11 14:40:52,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:52,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:52,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:52,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:52,841 INFO L87 Difference]: Start difference. First operand 389 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:53,007 INFO L93 Difference]: Finished difference Result 664 states and 1944 transitions. [2021-03-11 14:40:53,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:53,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:53,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:53,011 INFO L225 Difference]: With dead ends: 664 [2021-03-11 14:40:53,011 INFO L226 Difference]: Without dead ends: 650 [2021-03-11 14:40:53,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 358.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:53,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-03-11 14:40:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 397. [2021-03-11 14:40:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.4065656565656566) internal successors, (1349), 396 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1349 transitions. [2021-03-11 14:40:53,018 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1349 transitions. Word has length 22 [2021-03-11 14:40:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:53,018 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1349 transitions. [2021-03-11 14:40:53,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1349 transitions. [2021-03-11 14:40:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:53,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:53,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:53,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1246 [2021-03-11 14:40:53,019 INFO L428 AbstractCegarLoop]: === Iteration 1248 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:53,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1608521043, now seen corresponding path program 1242 times [2021-03-11 14:40:53,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:53,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141950027] [2021-03-11 14:40:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:53,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:53,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:53,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:53,063 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:53,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:53,111 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:53,182 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:53,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:53,236 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:53,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:53,300 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:53,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:53,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141950027] [2021-03-11 14:40:53,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:53,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:53,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832558461] [2021-03-11 14:40:53,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:53,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:53,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:53,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:53,361 INFO L87 Difference]: Start difference. First operand 397 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:53,534 INFO L93 Difference]: Finished difference Result 666 states and 1941 transitions. [2021-03-11 14:40:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:53,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:53,537 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:40:53,537 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:40:53,537 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 371.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:53,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:40:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 384. [2021-03-11 14:40:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:40:53,544 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:40:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:53,544 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:40:53,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:53,544 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:40:53,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:53,544 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:53,544 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:53,544 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1247 [2021-03-11 14:40:53,544 INFO L428 AbstractCegarLoop]: === Iteration 1249 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:53,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:53,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1187437561, now seen corresponding path program 1243 times [2021-03-11 14:40:53,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:53,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428235668] [2021-03-11 14:40:53,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:53,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:53,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:53,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:53,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:53,588 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:53,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:53,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:53,712 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:53,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:53,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:53,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:53,863 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:53,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:53,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428235668] [2021-03-11 14:40:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:53,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956457333] [2021-03-11 14:40:53,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:53,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:53,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:53,923 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:54,156 INFO L93 Difference]: Finished difference Result 644 states and 1901 transitions. [2021-03-11 14:40:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:54,160 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:40:54,160 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:40:54,160 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 447.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:40:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 390. [2021-03-11 14:40:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.437017994858612) internal successors, (1337), 389 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1337 transitions. [2021-03-11 14:40:54,167 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1337 transitions. Word has length 22 [2021-03-11 14:40:54,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:54,167 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1337 transitions. [2021-03-11 14:40:54,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,167 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1337 transitions. [2021-03-11 14:40:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:54,167 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:54,167 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:54,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1248 [2021-03-11 14:40:54,167 INFO L428 AbstractCegarLoop]: === Iteration 1250 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:54,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:54,168 INFO L82 PathProgramCache]: Analyzing trace with hash -504741721, now seen corresponding path program 1244 times [2021-03-11 14:40:54,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:54,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751249044] [2021-03-11 14:40:54,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:54,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:54,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:54,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:54,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:54,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:54,265 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:54,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:54,338 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:40:54,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:40:54,423 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:54,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:54,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:54,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:54,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751249044] [2021-03-11 14:40:54,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:54,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:54,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145324004] [2021-03-11 14:40:54,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:54,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:54,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:54,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:54,546 INFO L87 Difference]: Start difference. First operand 390 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:54,717 INFO L93 Difference]: Finished difference Result 648 states and 1907 transitions. [2021-03-11 14:40:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:54,720 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:40:54,720 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:40:54,720 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 423.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:40:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 388. [2021-03-11 14:40:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.441860465116279) internal successors, (1332), 387 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1332 transitions. [2021-03-11 14:40:54,726 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1332 transitions. Word has length 22 [2021-03-11 14:40:54,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:54,726 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1332 transitions. [2021-03-11 14:40:54,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1332 transitions. [2021-03-11 14:40:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:54,727 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:54,727 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:54,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1249 [2021-03-11 14:40:54,727 INFO L428 AbstractCegarLoop]: === Iteration 1251 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1722667363, now seen corresponding path program 1245 times [2021-03-11 14:40:54,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:54,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808210281] [2021-03-11 14:40:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:54,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:54,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:54,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:54,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:54,759 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:54,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:54,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:54,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:54,849 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:54,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:54,938 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:54,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:54,998 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:54,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:55,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808210281] [2021-03-11 14:40:55,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:55,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:55,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174919963] [2021-03-11 14:40:55,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:55,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:55,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:55,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:55,059 INFO L87 Difference]: Start difference. First operand 388 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:55,258 INFO L93 Difference]: Finished difference Result 647 states and 1904 transitions. [2021-03-11 14:40:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:55,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:55,262 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:40:55,262 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:40:55,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 407.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:40:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 391. [2021-03-11 14:40:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.428205128205128) internal successors, (1337), 390 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1337 transitions. [2021-03-11 14:40:55,268 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1337 transitions. Word has length 22 [2021-03-11 14:40:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:55,268 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1337 transitions. [2021-03-11 14:40:55,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1337 transitions. [2021-03-11 14:40:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:55,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:55,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:55,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1250 [2021-03-11 14:40:55,269 INFO L428 AbstractCegarLoop]: === Iteration 1252 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1256142629, now seen corresponding path program 1246 times [2021-03-11 14:40:55,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:55,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714789999] [2021-03-11 14:40:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:55,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:55,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:55,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:55,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:55,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:55,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:55,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:55,440 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:40:55,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:40:55,533 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:55,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:55,597 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:55,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:55,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714789999] [2021-03-11 14:40:55,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:55,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:55,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875324813] [2021-03-11 14:40:55,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:55,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:55,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:55,657 INFO L87 Difference]: Start difference. First operand 391 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:55,815 INFO L93 Difference]: Finished difference Result 653 states and 1913 transitions. [2021-03-11 14:40:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:55,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:55,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:55,819 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:40:55,819 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:40:55,819 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 413.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:40:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 388. [2021-03-11 14:40:55,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.434108527131783) internal successors, (1329), 387 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1329 transitions. [2021-03-11 14:40:55,825 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1329 transitions. Word has length 22 [2021-03-11 14:40:55,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:55,825 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1329 transitions. [2021-03-11 14:40:55,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1329 transitions. [2021-03-11 14:40:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:55,826 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:55,826 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:55,826 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1251 [2021-03-11 14:40:55,826 INFO L428 AbstractCegarLoop]: === Iteration 1253 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:55,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1641429039, now seen corresponding path program 1247 times [2021-03-11 14:40:55,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:55,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932196136] [2021-03-11 14:40:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:55,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:55,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:55,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:55,870 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:55,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:55,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:55,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:55,992 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:55,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:56,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:56,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:56,093 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:56,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:56,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932196136] [2021-03-11 14:40:56,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:56,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:56,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102520991] [2021-03-11 14:40:56,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:56,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:56,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:56,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:56,134 INFO L87 Difference]: Start difference. First operand 388 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:56,272 INFO L93 Difference]: Finished difference Result 660 states and 1930 transitions. [2021-03-11 14:40:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:56,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:56,276 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:40:56,276 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:40:56,276 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 350.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:40:56,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 396. [2021-03-11 14:40:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.4) internal successors, (1343), 395 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1343 transitions. [2021-03-11 14:40:56,282 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1343 transitions. Word has length 22 [2021-03-11 14:40:56,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:56,283 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1343 transitions. [2021-03-11 14:40:56,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,283 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1343 transitions. [2021-03-11 14:40:56,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:56,283 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:56,283 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:56,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1252 [2021-03-11 14:40:56,283 INFO L428 AbstractCegarLoop]: === Iteration 1254 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:56,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -297573277, now seen corresponding path program 1248 times [2021-03-11 14:40:56,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:56,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290199458] [2021-03-11 14:40:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:56,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:56,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:56,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:56,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:56,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:56,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:56,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:56,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:40:56,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:40:56,497 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:40:56,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:40:56,556 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:56,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:56,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290199458] [2021-03-11 14:40:56,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:56,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:56,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931771441] [2021-03-11 14:40:56,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:56,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:56,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:56,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:56,616 INFO L87 Difference]: Start difference. First operand 396 states and 1343 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:56,785 INFO L93 Difference]: Finished difference Result 662 states and 1927 transitions. [2021-03-11 14:40:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:56,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:56,789 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:40:56,789 INFO L226 Difference]: Without dead ends: 630 [2021-03-11 14:40:56,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 360.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-03-11 14:40:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 380. [2021-03-11 14:40:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:40:56,795 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:40:56,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:56,795 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:40:56,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:40:56,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:56,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:56,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:56,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1253 [2021-03-11 14:40:56,796 INFO L428 AbstractCegarLoop]: === Iteration 1255 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:56,796 INFO L82 PathProgramCache]: Analyzing trace with hash -850895831, now seen corresponding path program 1249 times [2021-03-11 14:40:56,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:56,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943889444] [2021-03-11 14:40:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:56,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:56,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:56,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:56,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:56,838 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:56,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:56,894 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:56,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:56,933 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:56,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:56,982 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:56,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:57,042 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:57,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:57,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943889444] [2021-03-11 14:40:57,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:57,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:57,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975643458] [2021-03-11 14:40:57,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:57,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:57,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:57,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:57,103 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:57,312 INFO L93 Difference]: Finished difference Result 619 states and 1852 transitions. [2021-03-11 14:40:57,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:57,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:57,315 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:40:57,315 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:40:57,315 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 375.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:40:57,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 387. [2021-03-11 14:40:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4559585492227978) internal successors, (1334), 386 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1334 transitions. [2021-03-11 14:40:57,322 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:57,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:57,322 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1334 transitions. [2021-03-11 14:40:57,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1334 transitions. [2021-03-11 14:40:57,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:57,322 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:57,322 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:57,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1254 [2021-03-11 14:40:57,322 INFO L428 AbstractCegarLoop]: === Iteration 1256 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:57,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:57,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1353437383, now seen corresponding path program 1250 times [2021-03-11 14:40:57,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:57,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537793833] [2021-03-11 14:40:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:57,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:57,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:57,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:57,366 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:57,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:57,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:57,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:57,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:57,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:57,506 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:57,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:57,570 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:57,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:57,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537793833] [2021-03-11 14:40:57,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:57,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:57,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478732238] [2021-03-11 14:40:57,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:57,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:57,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:57,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:57,630 INFO L87 Difference]: Start difference. First operand 387 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:57,852 INFO L93 Difference]: Finished difference Result 618 states and 1848 transitions. [2021-03-11 14:40:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:57,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:57,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:57,856 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:40:57,856 INFO L226 Difference]: Without dead ends: 606 [2021-03-11 14:40:57,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-03-11 14:40:57,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 385. [2021-03-11 14:40:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4609375) internal successors, (1329), 384 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1329 transitions. [2021-03-11 14:40:57,862 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1329 transitions. Word has length 22 [2021-03-11 14:40:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:57,862 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1329 transitions. [2021-03-11 14:40:57,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1329 transitions. [2021-03-11 14:40:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:57,863 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:57,863 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:57,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1255 [2021-03-11 14:40:57,863 INFO L428 AbstractCegarLoop]: === Iteration 1257 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:57,863 INFO L82 PathProgramCache]: Analyzing trace with hash 161796701, now seen corresponding path program 1251 times [2021-03-11 14:40:57,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:57,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015973093] [2021-03-11 14:40:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:57,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:57,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:57,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:57,907 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:57,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:57,956 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:57,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:57,995 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:57,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:58,044 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:58,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:58,105 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:58,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:58,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:58,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015973093] [2021-03-11 14:40:58,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:58,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:58,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324904205] [2021-03-11 14:40:58,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:58,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:58,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:58,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:58,165 INFO L87 Difference]: Start difference. First operand 385 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:58,372 INFO L93 Difference]: Finished difference Result 622 states and 1857 transitions. [2021-03-11 14:40:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:58,375 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:40:58,375 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:40:58,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 371.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:40:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 388. [2021-03-11 14:40:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.44702842377261) internal successors, (1334), 387 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1334 transitions. [2021-03-11 14:40:58,382 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1334 transitions. Word has length 22 [2021-03-11 14:40:58,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:58,382 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1334 transitions. [2021-03-11 14:40:58,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1334 transitions. [2021-03-11 14:40:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:58,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:58,382 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:58,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1256 [2021-03-11 14:40:58,382 INFO L428 AbstractCegarLoop]: === Iteration 1258 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:58,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:58,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1891828811, now seen corresponding path program 1252 times [2021-03-11 14:40:58,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:58,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755446217] [2021-03-11 14:40:58,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:58,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:58,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:58,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:58,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:58,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:58,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:58,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:58,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:40:58,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:40:58,566 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:58,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:58,627 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:58,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:58,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755446217] [2021-03-11 14:40:58,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:58,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:58,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336958162] [2021-03-11 14:40:58,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:58,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:58,686 INFO L87 Difference]: Start difference. First operand 388 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:58,835 INFO L93 Difference]: Finished difference Result 623 states and 1856 transitions. [2021-03-11 14:40:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:58,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:58,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:58,837 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:40:58,837 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:40:58,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 344.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:58,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:40:58,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 385. [2021-03-11 14:40:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4557291666666665) internal successors, (1327), 384 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1327 transitions. [2021-03-11 14:40:58,843 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1327 transitions. Word has length 22 [2021-03-11 14:40:58,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:58,843 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1327 transitions. [2021-03-11 14:40:58,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:58,843 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1327 transitions. [2021-03-11 14:40:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:58,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:58,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:58,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1257 [2021-03-11 14:40:58,844 INFO L428 AbstractCegarLoop]: === Iteration 1259 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:58,844 INFO L82 PathProgramCache]: Analyzing trace with hash -283406281, now seen corresponding path program 1253 times [2021-03-11 14:40:58,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:58,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182828967] [2021-03-11 14:40:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:58,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:58,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:58,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:58,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:58,874 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:58,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:58,909 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:58,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:58,952 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:58,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:59,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:59,064 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:59,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:59,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182828967] [2021-03-11 14:40:59,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:59,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:59,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894350352] [2021-03-11 14:40:59,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:59,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:59,124 INFO L87 Difference]: Start difference. First operand 385 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:59,333 INFO L93 Difference]: Finished difference Result 619 states and 1848 transitions. [2021-03-11 14:40:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:59,335 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:59,336 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:40:59,336 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:40:59,337 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 357.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:59,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:40:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 387. [2021-03-11 14:40:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4455958549222796) internal successors, (1330), 386 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1330 transitions. [2021-03-11 14:40:59,343 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1330 transitions. Word has length 22 [2021-03-11 14:40:59,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:59,343 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1330 transitions. [2021-03-11 14:40:59,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1330 transitions. [2021-03-11 14:40:59,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:59,343 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:59,343 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:59,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1258 [2021-03-11 14:40:59,343 INFO L428 AbstractCegarLoop]: === Iteration 1260 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:59,344 INFO L82 PathProgramCache]: Analyzing trace with hash -456653973, now seen corresponding path program 1254 times [2021-03-11 14:40:59,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:59,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726450952] [2021-03-11 14:40:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:59,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:59,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:59,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:59,388 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:59,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:59,437 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:40:59,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:40:59,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:59,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:40:59,530 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:40:59,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:40:59,595 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:40:59,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:40:59,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:40:59,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726450952] [2021-03-11 14:40:59,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:40:59,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:40:59,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834041966] [2021-03-11 14:40:59,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:40:59,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:40:59,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:40:59,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:40:59,655 INFO L87 Difference]: Start difference. First operand 387 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:40:59,879 INFO L93 Difference]: Finished difference Result 621 states and 1850 transitions. [2021-03-11 14:40:59,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:40:59,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:40:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:40:59,883 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:40:59,883 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:40:59,883 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 383.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:40:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:40:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 383. [2021-03-11 14:40:59,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4607329842931938) internal successors, (1322), 382 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1322 transitions. [2021-03-11 14:40:59,889 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1322 transitions. Word has length 22 [2021-03-11 14:40:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:40:59,889 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1322 transitions. [2021-03-11 14:40:59,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:40:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1322 transitions. [2021-03-11 14:40:59,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:40:59,889 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:40:59,890 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:40:59,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1259 [2021-03-11 14:40:59,890 INFO L428 AbstractCegarLoop]: === Iteration 1261 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:40:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:40:59,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1293794971, now seen corresponding path program 1255 times [2021-03-11 14:40:59,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:40:59,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625220933] [2021-03-11 14:40:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:40:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:40:59,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:40:59,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:40:59,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:40:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:40:59,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:40:59,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:40:59,984 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:40:59,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:00,048 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:00,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:00,099 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:00,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:00,161 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:00,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:00,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625220933] [2021-03-11 14:41:00,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:00,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:00,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389539068] [2021-03-11 14:41:00,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:00,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:00,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:00,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:00,223 INFO L87 Difference]: Start difference. First operand 383 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:00,387 INFO L93 Difference]: Finished difference Result 623 states and 1854 transitions. [2021-03-11 14:41:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:00,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:00,389 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:41:00,389 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:41:00,390 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 375.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:41:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 388. [2021-03-11 14:41:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.449612403100775) internal successors, (1335), 387 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1335 transitions. [2021-03-11 14:41:00,396 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1335 transitions. Word has length 22 [2021-03-11 14:41:00,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:00,396 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1335 transitions. [2021-03-11 14:41:00,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1335 transitions. [2021-03-11 14:41:00,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:00,397 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:00,397 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:00,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1260 [2021-03-11 14:41:00,397 INFO L428 AbstractCegarLoop]: === Iteration 1262 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:00,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1796336523, now seen corresponding path program 1256 times [2021-03-11 14:41:00,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:00,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892735808] [2021-03-11 14:41:00,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:00,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:00,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:00,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:00,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:00,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:00,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:00,432 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:00,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:00,468 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:00,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:00,534 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:00,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:00,584 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:00,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:00,652 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:00,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:00,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892735808] [2021-03-11 14:41:00,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:00,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:00,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555818858] [2021-03-11 14:41:00,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:00,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:00,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:00,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:00,716 INFO L87 Difference]: Start difference. First operand 388 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:00,966 INFO L93 Difference]: Finished difference Result 622 states and 1850 transitions. [2021-03-11 14:41:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:00,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:00,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:00,969 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:41:00,969 INFO L226 Difference]: Without dead ends: 610 [2021-03-11 14:41:00,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 399.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-03-11 14:41:00,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 386. [2021-03-11 14:41:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4545454545454546) internal successors, (1330), 385 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1330 transitions. [2021-03-11 14:41:00,976 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:00,976 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1330 transitions. [2021-03-11 14:41:00,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1330 transitions. [2021-03-11 14:41:00,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:00,976 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:00,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:00,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1261 [2021-03-11 14:41:00,976 INFO L428 AbstractCegarLoop]: === Iteration 1263 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash 812989149, now seen corresponding path program 1257 times [2021-03-11 14:41:00,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:00,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264451509] [2021-03-11 14:41:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:00,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:00,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:00,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:00,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:00,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:01,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:01,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:01,024 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:01,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:01,078 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:01,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:01,145 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:01,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:01,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:01,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:01,294 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:01,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:01,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264451509] [2021-03-11 14:41:01,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:01,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:01,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352953849] [2021-03-11 14:41:01,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:01,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:01,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:01,356 INFO L87 Difference]: Start difference. First operand 386 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:01,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:01,596 INFO L93 Difference]: Finished difference Result 631 states and 1868 transitions. [2021-03-11 14:41:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:01,600 INFO L225 Difference]: With dead ends: 631 [2021-03-11 14:41:01,600 INFO L226 Difference]: Without dead ends: 620 [2021-03-11 14:41:01,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 449.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:01,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-03-11 14:41:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 390. [2021-03-11 14:41:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.437017994858612) internal successors, (1337), 389 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:01,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1337 transitions. [2021-03-11 14:41:01,607 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1337 transitions. Word has length 22 [2021-03-11 14:41:01,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:01,607 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1337 transitions. [2021-03-11 14:41:01,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1337 transitions. [2021-03-11 14:41:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:01,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:01,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:01,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1262 [2021-03-11 14:41:01,608 INFO L428 AbstractCegarLoop]: === Iteration 1264 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 886296561, now seen corresponding path program 1258 times [2021-03-11 14:41:01,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:01,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190786450] [2021-03-11 14:41:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:01,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:01,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:01,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:01,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:01,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:01,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:01,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:01,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:01,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:01,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:01,767 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:01,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:01,826 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:01,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:01,873 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:01,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:01,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190786450] [2021-03-11 14:41:01,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:01,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:01,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560432548] [2021-03-11 14:41:01,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:01,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:01,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:01,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:01,915 INFO L87 Difference]: Start difference. First operand 390 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:02,086 INFO L93 Difference]: Finished difference Result 636 states and 1874 transitions. [2021-03-11 14:41:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:02,090 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:41:02,090 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:41:02,091 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 339.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:41:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 386. [2021-03-11 14:41:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.446753246753247) internal successors, (1327), 385 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1327 transitions. [2021-03-11 14:41:02,097 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1327 transitions. Word has length 22 [2021-03-11 14:41:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:02,097 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1327 transitions. [2021-03-11 14:41:02,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1327 transitions. [2021-03-11 14:41:02,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:02,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:02,097 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:02,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1263 [2021-03-11 14:41:02,098 INFO L428 AbstractCegarLoop]: === Iteration 1265 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:02,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash -705299213, now seen corresponding path program 1259 times [2021-03-11 14:41:02,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:02,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57455379] [2021-03-11 14:41:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:02,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:02,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:02,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:02,143 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:02,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:02,197 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:02,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:02,270 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:02,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:02,359 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:02,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:02,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:02,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:02,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57455379] [2021-03-11 14:41:02,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:02,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:02,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134286648] [2021-03-11 14:41:02,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:02,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:02,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:02,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:02,489 INFO L87 Difference]: Start difference. First operand 386 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:02,784 INFO L93 Difference]: Finished difference Result 628 states and 1858 transitions. [2021-03-11 14:41:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:02,788 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:41:02,788 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:41:02,788 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 470.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:41:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 389. [2021-03-11 14:41:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4329896907216493) internal successors, (1332), 388 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1332 transitions. [2021-03-11 14:41:02,795 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1332 transitions. Word has length 22 [2021-03-11 14:41:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:02,795 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1332 transitions. [2021-03-11 14:41:02,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1332 transitions. [2021-03-11 14:41:02,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:02,795 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:02,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:02,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1264 [2021-03-11 14:41:02,796 INFO L428 AbstractCegarLoop]: === Iteration 1266 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:02,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash 610858091, now seen corresponding path program 1260 times [2021-03-11 14:41:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:02,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134262158] [2021-03-11 14:41:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:02,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:02,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:02,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:02,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:02,844 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:02,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:02,899 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:02,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:02,968 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:02,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:03,057 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:03,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:03,122 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:03,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:03,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134262158] [2021-03-11 14:41:03,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:03,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:03,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713556787] [2021-03-11 14:41:03,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:03,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:03,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:03,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:03,184 INFO L87 Difference]: Start difference. First operand 389 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:03,385 INFO L93 Difference]: Finished difference Result 634 states and 1867 transitions. [2021-03-11 14:41:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:03,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:03,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:03,389 INFO L225 Difference]: With dead ends: 634 [2021-03-11 14:41:03,389 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:41:03,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 414.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:41:03,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 383. [2021-03-11 14:41:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4528795811518322) internal successors, (1319), 382 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1319 transitions. [2021-03-11 14:41:03,395 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1319 transitions. Word has length 22 [2021-03-11 14:41:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:03,395 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1319 transitions. [2021-03-11 14:41:03,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,395 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1319 transitions. [2021-03-11 14:41:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:03,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:03,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:03,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1265 [2021-03-11 14:41:03,396 INFO L428 AbstractCegarLoop]: === Iteration 1267 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1047594981, now seen corresponding path program 1261 times [2021-03-11 14:41:03,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:03,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044820177] [2021-03-11 14:41:03,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:03,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:03,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:03,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:03,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:03,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:03,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:03,493 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:03,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:03,561 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:03,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:03,601 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:03,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:03,644 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:03,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044820177] [2021-03-11 14:41:03,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:03,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:03,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414914448] [2021-03-11 14:41:03,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:03,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:03,686 INFO L87 Difference]: Start difference. First operand 383 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:03,863 INFO L93 Difference]: Finished difference Result 632 states and 1875 transitions. [2021-03-11 14:41:03,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:03,866 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:03,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:03,867 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:41:03,867 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:41:03,867 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 353.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:41:03,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 390. [2021-03-11 14:41:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4395886889460154) internal successors, (1338), 389 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1338 transitions. [2021-03-11 14:41:03,874 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1338 transitions. Word has length 22 [2021-03-11 14:41:03,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:03,874 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1338 transitions. [2021-03-11 14:41:03,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1338 transitions. [2021-03-11 14:41:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:03,874 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:03,874 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:03,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1266 [2021-03-11 14:41:03,874 INFO L428 AbstractCegarLoop]: === Iteration 1268 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1006030531, now seen corresponding path program 1262 times [2021-03-11 14:41:03,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:03,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485311986] [2021-03-11 14:41:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:03,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:03,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:03,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:03,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:03,913 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:03,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:03,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:03,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:04,034 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:04,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:04,085 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:04,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:04,147 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:04,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:04,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:04,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485311986] [2021-03-11 14:41:04,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:04,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:04,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143732705] [2021-03-11 14:41:04,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:04,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:04,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:04,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:04,206 INFO L87 Difference]: Start difference. First operand 390 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:04,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:04,439 INFO L93 Difference]: Finished difference Result 633 states and 1874 transitions. [2021-03-11 14:41:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:04,442 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:04,443 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:41:04,443 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:41:04,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 408.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:41:04,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 387. [2021-03-11 14:41:04,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4455958549222796) internal successors, (1330), 386 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1330 transitions. [2021-03-11 14:41:04,449 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:04,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:04,449 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1330 transitions. [2021-03-11 14:41:04,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1330 transitions. [2021-03-11 14:41:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:04,450 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:04,450 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:04,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1267 [2021-03-11 14:41:04,450 INFO L428 AbstractCegarLoop]: === Iteration 1269 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash 2141686569, now seen corresponding path program 1263 times [2021-03-11 14:41:04,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:04,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607410613] [2021-03-11 14:41:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:04,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:04,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:04,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:04,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:04,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:04,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:04,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:04,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:04,545 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:04,615 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:04,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:04,699 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:04,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:04,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:04,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:04,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607410613] [2021-03-11 14:41:04,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:04,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:04,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615492640] [2021-03-11 14:41:04,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:04,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:04,821 INFO L87 Difference]: Start difference. First operand 387 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:05,056 INFO L93 Difference]: Finished difference Result 633 states and 1871 transitions. [2021-03-11 14:41:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:05,060 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:41:05,060 INFO L226 Difference]: Without dead ends: 622 [2021-03-11 14:41:05,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 441.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:05,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-03-11 14:41:05,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 391. [2021-03-11 14:41:05,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.428205128205128) internal successors, (1337), 390 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1337 transitions. [2021-03-11 14:41:05,069 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1337 transitions. Word has length 22 [2021-03-11 14:41:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:05,070 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1337 transitions. [2021-03-11 14:41:05,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1337 transitions. [2021-03-11 14:41:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:05,070 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:05,070 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:05,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1268 [2021-03-11 14:41:05,070 INFO L428 AbstractCegarLoop]: === Iteration 1270 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:05,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:05,071 INFO L82 PathProgramCache]: Analyzing trace with hash -2079973315, now seen corresponding path program 1264 times [2021-03-11 14:41:05,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:05,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407846496] [2021-03-11 14:41:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:05,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:05,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:05,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:05,114 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:05,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:05,165 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:05,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:05,233 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:05,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:05,308 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:05,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:05,354 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:05,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:05,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407846496] [2021-03-11 14:41:05,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:05,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:05,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374570684] [2021-03-11 14:41:05,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:05,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:05,395 INFO L87 Difference]: Start difference. First operand 391 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:05,539 INFO L93 Difference]: Finished difference Result 638 states and 1877 transitions. [2021-03-11 14:41:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:05,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:05,543 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:41:05,543 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:41:05,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 342.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:05,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:41:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 387. [2021-03-11 14:41:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.435233160621762) internal successors, (1326), 386 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1326 transitions. [2021-03-11 14:41:05,550 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1326 transitions. Word has length 22 [2021-03-11 14:41:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:05,550 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1326 transitions. [2021-03-11 14:41:05,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1326 transitions. [2021-03-11 14:41:05,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:05,550 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:05,550 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:05,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1269 [2021-03-11 14:41:05,550 INFO L428 AbstractCegarLoop]: === Iteration 1271 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:05,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:05,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1266499241, now seen corresponding path program 1265 times [2021-03-11 14:41:05,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:05,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969194032] [2021-03-11 14:41:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:05,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:05,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:05,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:05,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:05,592 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:05,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:05,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:05,708 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:05,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:05,794 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:05,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:05,857 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:05,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:05,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969194032] [2021-03-11 14:41:05,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:05,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:05,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398144795] [2021-03-11 14:41:05,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:05,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:05,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:05,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:05,920 INFO L87 Difference]: Start difference. First operand 387 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:06,150 INFO L93 Difference]: Finished difference Result 636 states and 1874 transitions. [2021-03-11 14:41:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:06,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:06,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:06,154 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:41:06,154 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:41:06,154 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 442.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:41:06,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 392. [2021-03-11 14:41:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.414322250639386) internal successors, (1335), 391 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1335 transitions. [2021-03-11 14:41:06,160 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1335 transitions. Word has length 22 [2021-03-11 14:41:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:06,160 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1335 transitions. [2021-03-11 14:41:06,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1335 transitions. [2021-03-11 14:41:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:06,161 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:06,161 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:06,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1270 [2021-03-11 14:41:06,161 INFO L428 AbstractCegarLoop]: === Iteration 1272 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:06,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:06,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1317854747, now seen corresponding path program 1266 times [2021-03-11 14:41:06,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:06,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873988893] [2021-03-11 14:41:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:06,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:06,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:06,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:06,205 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:06,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:06,255 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:06,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:06,323 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:06,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:06,410 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:06,476 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:06,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873988893] [2021-03-11 14:41:06,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:06,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:06,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190819039] [2021-03-11 14:41:06,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:06,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:06,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:06,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:06,539 INFO L87 Difference]: Start difference. First operand 392 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:06,747 INFO L93 Difference]: Finished difference Result 632 states and 1863 transitions. [2021-03-11 14:41:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:06,750 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:06,751 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:41:06,751 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:41:06,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 407.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:41:06,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 383. [2021-03-11 14:41:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.445026178010471) internal successors, (1316), 382 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1316 transitions. [2021-03-11 14:41:06,757 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1316 transitions. Word has length 22 [2021-03-11 14:41:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:06,757 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1316 transitions. [2021-03-11 14:41:06,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1316 transitions. [2021-03-11 14:41:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:06,758 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:06,758 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:06,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1271 [2021-03-11 14:41:06,758 INFO L428 AbstractCegarLoop]: === Iteration 1273 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:06,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:06,758 INFO L82 PathProgramCache]: Analyzing trace with hash -820988039, now seen corresponding path program 1267 times [2021-03-11 14:41:06,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:06,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572827178] [2021-03-11 14:41:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:06,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:06,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:06,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:06,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:06,803 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:06,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:06,851 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:06,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:06,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:06,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:06,947 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:06,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:06,993 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:07,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572827178] [2021-03-11 14:41:07,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:07,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:07,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152864189] [2021-03-11 14:41:07,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:07,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:07,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:07,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:07,036 INFO L87 Difference]: Start difference. First operand 383 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:07,270 INFO L93 Difference]: Finished difference Result 625 states and 1853 transitions. [2021-03-11 14:41:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:07,274 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:41:07,274 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:41:07,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 352.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:41:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 388. [2021-03-11 14:41:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.434108527131783) internal successors, (1329), 387 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1329 transitions. [2021-03-11 14:41:07,280 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1329 transitions. Word has length 22 [2021-03-11 14:41:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:07,280 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1329 transitions. [2021-03-11 14:41:07,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1329 transitions. [2021-03-11 14:41:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:07,281 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:07,281 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:07,281 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1272 [2021-03-11 14:41:07,281 INFO L428 AbstractCegarLoop]: === Iteration 1274 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:07,281 INFO L82 PathProgramCache]: Analyzing trace with hash -994235731, now seen corresponding path program 1268 times [2021-03-11 14:41:07,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:07,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397501058] [2021-03-11 14:41:07,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:07,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:07,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:07,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:07,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:07,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:07,382 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:07,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:07,449 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:07,500 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:07,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:07,569 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:07,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:07,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397501058] [2021-03-11 14:41:07,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:07,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:07,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517174668] [2021-03-11 14:41:07,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:07,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:07,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:07,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:07,631 INFO L87 Difference]: Start difference. First operand 388 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:07,887 INFO L93 Difference]: Finished difference Result 627 states and 1855 transitions. [2021-03-11 14:41:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:07,890 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:07,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:07,891 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:41:07,891 INFO L226 Difference]: Without dead ends: 613 [2021-03-11 14:41:07,891 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 428.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-03-11 14:41:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 386. [2021-03-11 14:41:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4389610389610388) internal successors, (1324), 385 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1324 transitions. [2021-03-11 14:41:07,898 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1324 transitions. Word has length 22 [2021-03-11 14:41:07,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:07,898 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1324 transitions. [2021-03-11 14:41:07,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:07,898 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1324 transitions. [2021-03-11 14:41:07,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:07,898 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:07,898 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:07,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1273 [2021-03-11 14:41:07,898 INFO L428 AbstractCegarLoop]: === Iteration 1275 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:07,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:07,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1894073419, now seen corresponding path program 1269 times [2021-03-11 14:41:07,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:07,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184762496] [2021-03-11 14:41:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:07,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:07,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:07,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:07,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:07,944 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:07,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:07,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:08,062 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:08,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:08,149 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:08,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:08,217 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:08,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:08,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184762496] [2021-03-11 14:41:08,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:08,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:08,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939692679] [2021-03-11 14:41:08,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:08,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:08,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:08,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:08,279 INFO L87 Difference]: Start difference. First operand 386 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:08,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:08,509 INFO L93 Difference]: Finished difference Result 627 states and 1853 transitions. [2021-03-11 14:41:08,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:08,512 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:41:08,513 INFO L226 Difference]: Without dead ends: 617 [2021-03-11 14:41:08,513 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 452.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:08,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-03-11 14:41:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 389. [2021-03-11 14:41:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4252577319587627) internal successors, (1329), 388 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1329 transitions. [2021-03-11 14:41:08,519 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1329 transitions. Word has length 22 [2021-03-11 14:41:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:08,519 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1329 transitions. [2021-03-11 14:41:08,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1329 transitions. [2021-03-11 14:41:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:08,520 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:08,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:08,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1274 [2021-03-11 14:41:08,520 INFO L428 AbstractCegarLoop]: === Iteration 1276 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash -577916115, now seen corresponding path program 1270 times [2021-03-11 14:41:08,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:08,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281639904] [2021-03-11 14:41:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:08,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:08,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:08,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:08,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:08,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:08,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:08,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:08,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:08,586 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:08,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:08,631 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:08,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:08,692 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:08,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:08,742 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:08,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:08,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281639904] [2021-03-11 14:41:08,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:08,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:08,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514753303] [2021-03-11 14:41:08,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:08,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:08,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:08,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:08,802 INFO L87 Difference]: Start difference. First operand 389 states and 1329 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:08,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:08,994 INFO L93 Difference]: Finished difference Result 633 states and 1862 transitions. [2021-03-11 14:41:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:08,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:08,998 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:41:08,998 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:41:08,998 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 318.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:41:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 386. [2021-03-11 14:41:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.431168831168831) internal successors, (1321), 385 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:09,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1321 transitions. [2021-03-11 14:41:09,005 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1321 transitions. Word has length 22 [2021-03-11 14:41:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:09,005 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1321 transitions. [2021-03-11 14:41:09,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1321 transitions. [2021-03-11 14:41:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:09,005 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:09,005 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:09,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1275 [2021-03-11 14:41:09,005 INFO L428 AbstractCegarLoop]: === Iteration 1277 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:09,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:09,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1151935029, now seen corresponding path program 1271 times [2021-03-11 14:41:09,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:09,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601041511] [2021-03-11 14:41:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:09,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:09,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:09,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:09,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:09,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:09,103 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:09,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:09,170 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:09,261 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:09,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:09,327 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:09,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:09,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601041511] [2021-03-11 14:41:09,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:09,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:09,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350421126] [2021-03-11 14:41:09,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:09,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:09,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:09,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:09,391 INFO L87 Difference]: Start difference. First operand 386 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:09,624 INFO L93 Difference]: Finished difference Result 633 states and 1864 transitions. [2021-03-11 14:41:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:09,628 INFO L225 Difference]: With dead ends: 633 [2021-03-11 14:41:09,628 INFO L226 Difference]: Without dead ends: 621 [2021-03-11 14:41:09,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 458.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:09,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-03-11 14:41:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 391. [2021-03-11 14:41:09,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.41025641025641) internal successors, (1330), 390 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1330 transitions. [2021-03-11 14:41:09,634 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:09,635 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1330 transitions. [2021-03-11 14:41:09,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1330 transitions. [2021-03-11 14:41:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:09,635 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:09,635 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:09,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1276 [2021-03-11 14:41:09,635 INFO L428 AbstractCegarLoop]: === Iteration 1278 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1653627271, now seen corresponding path program 1272 times [2021-03-11 14:41:09,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:09,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965561899] [2021-03-11 14:41:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:09,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:09,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:09,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:09,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:09,681 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:09,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:09,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:09,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:09,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:09,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:09,889 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:09,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:09,956 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:09,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:10,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965561899] [2021-03-11 14:41:10,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:10,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:10,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638641951] [2021-03-11 14:41:10,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:10,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:10,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:10,019 INFO L87 Difference]: Start difference. First operand 391 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:10,215 INFO L93 Difference]: Finished difference Result 629 states and 1853 transitions. [2021-03-11 14:41:10,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:10,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:10,218 INFO L225 Difference]: With dead ends: 629 [2021-03-11 14:41:10,218 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:41:10,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 413.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:10,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:41:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 380. [2021-03-11 14:41:10,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.451187335092348) internal successors, (1308), 379 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1308 transitions. [2021-03-11 14:41:10,225 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1308 transitions. Word has length 22 [2021-03-11 14:41:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:10,225 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1308 transitions. [2021-03-11 14:41:10,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1308 transitions. [2021-03-11 14:41:10,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:10,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:10,225 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:10,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1277 [2021-03-11 14:41:10,225 INFO L428 AbstractCegarLoop]: === Iteration 1279 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -947785333, now seen corresponding path program 1273 times [2021-03-11 14:41:10,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:10,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345947992] [2021-03-11 14:41:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:10,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:10,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:10,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:10,271 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:10,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:10,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:10,345 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:10,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:10,436 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:10,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:10,501 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:10,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345947992] [2021-03-11 14:41:10,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:10,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:10,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464125738] [2021-03-11 14:41:10,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:10,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:10,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:10,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:10,563 INFO L87 Difference]: Start difference. First operand 380 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:10,832 INFO L93 Difference]: Finished difference Result 652 states and 1939 transitions. [2021-03-11 14:41:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:10,836 INFO L225 Difference]: With dead ends: 652 [2021-03-11 14:41:10,836 INFO L226 Difference]: Without dead ends: 641 [2021-03-11 14:41:10,836 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 418.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-03-11 14:41:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 391. [2021-03-11 14:41:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.448717948717949) internal successors, (1345), 390 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1345 transitions. [2021-03-11 14:41:10,843 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1345 transitions. Word has length 22 [2021-03-11 14:41:10,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:10,843 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1345 transitions. [2021-03-11 14:41:10,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1345 transitions. [2021-03-11 14:41:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:10,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:10,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:10,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1278 [2021-03-11 14:41:10,844 INFO L428 AbstractCegarLoop]: === Iteration 1280 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:10,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:10,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1999596555, now seen corresponding path program 1274 times [2021-03-11 14:41:10,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:10,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360074740] [2021-03-11 14:41:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:10,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:10,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:10,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:10,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:10,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:10,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:10,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:10,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:10,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:10,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:11,072 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:11,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:11,144 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:11,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:11,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360074740] [2021-03-11 14:41:11,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:11,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:11,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275594278] [2021-03-11 14:41:11,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:11,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:11,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:11,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:11,212 INFO L87 Difference]: Start difference. First operand 391 states and 1345 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:11,427 INFO L93 Difference]: Finished difference Result 655 states and 1942 transitions. [2021-03-11 14:41:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:11,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:11,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:11,430 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:41:11,431 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:41:11,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 420.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:41:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 388. [2021-03-11 14:41:11,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.454780361757106) internal successors, (1337), 387 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1337 transitions. [2021-03-11 14:41:11,437 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1337 transitions. Word has length 22 [2021-03-11 14:41:11,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:11,437 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1337 transitions. [2021-03-11 14:41:11,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1337 transitions. [2021-03-11 14:41:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:11,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:11,438 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:11,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1279 [2021-03-11 14:41:11,438 INFO L428 AbstractCegarLoop]: === Iteration 1281 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:11,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:11,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1665345053, now seen corresponding path program 1275 times [2021-03-11 14:41:11,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:11,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267812110] [2021-03-11 14:41:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:11,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:11,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:11,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:11,473 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:11,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:11,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:11,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:11,530 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:11,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:11,584 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:11,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:11,654 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:11,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:11,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267812110] [2021-03-11 14:41:11,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:11,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:11,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235118868] [2021-03-11 14:41:11,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:11,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:11,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:11,707 INFO L87 Difference]: Start difference. First operand 388 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:11,941 INFO L93 Difference]: Finished difference Result 650 states and 1932 transitions. [2021-03-11 14:41:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:11,945 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:41:11,945 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:41:11,946 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:41:11,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 391. [2021-03-11 14:41:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4410256410256412) internal successors, (1342), 390 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1342 transitions. [2021-03-11 14:41:11,952 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1342 transitions. Word has length 22 [2021-03-11 14:41:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:11,952 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1342 transitions. [2021-03-11 14:41:11,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:11,952 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1342 transitions. [2021-03-11 14:41:11,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:11,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:11,953 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:11,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1280 [2021-03-11 14:41:11,953 INFO L428 AbstractCegarLoop]: === Iteration 1282 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:11,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:11,953 INFO L82 PathProgramCache]: Analyzing trace with hash -388280459, now seen corresponding path program 1276 times [2021-03-11 14:41:11,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:11,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299705028] [2021-03-11 14:41:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:11,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:11,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:11,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:11,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:12,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:12,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:12,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:12,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:12,083 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:12,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:12,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:12,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:12,204 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:12,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299705028] [2021-03-11 14:41:12,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:12,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:12,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985067383] [2021-03-11 14:41:12,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:12,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:12,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:12,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:12,274 INFO L87 Difference]: Start difference. First operand 391 states and 1342 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:12,512 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:41:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:12,542 INFO L93 Difference]: Finished difference Result 651 states and 1931 transitions. [2021-03-11 14:41:12,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:12,545 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:12,546 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:41:12,546 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:41:12,546 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 408.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:41:12,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 388. [2021-03-11 14:41:12,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.44702842377261) internal successors, (1334), 387 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1334 transitions. [2021-03-11 14:41:12,553 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1334 transitions. Word has length 22 [2021-03-11 14:41:12,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:12,553 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1334 transitions. [2021-03-11 14:41:12,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1334 transitions. [2021-03-11 14:41:12,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:12,554 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:12,554 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:12,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1281 [2021-03-11 14:41:12,554 INFO L428 AbstractCegarLoop]: === Iteration 1283 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:12,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1237477987, now seen corresponding path program 1277 times [2021-03-11 14:41:12,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:12,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965128726] [2021-03-11 14:41:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:12,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:12,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:12,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:12,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:12,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:12,607 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:12,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:12,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:12,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:12,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:12,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:12,746 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:12,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:12,816 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:12,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:12,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965128726] [2021-03-11 14:41:12,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:12,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:12,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757082320] [2021-03-11 14:41:12,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:12,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:12,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:12,883 INFO L87 Difference]: Start difference. First operand 388 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:13,089 INFO L93 Difference]: Finished difference Result 657 states and 1944 transitions. [2021-03-11 14:41:13,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:13,091 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:13,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:13,092 INFO L225 Difference]: With dead ends: 657 [2021-03-11 14:41:13,092 INFO L226 Difference]: Without dead ends: 643 [2021-03-11 14:41:13,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 377.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-03-11 14:41:13,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 392. [2021-03-11 14:41:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4296675191815855) internal successors, (1341), 391 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1341 transitions. [2021-03-11 14:41:13,098 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1341 transitions. Word has length 22 [2021-03-11 14:41:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:13,098 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1341 transitions. [2021-03-11 14:41:13,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1341 transitions. [2021-03-11 14:41:13,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:13,099 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:13,099 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:13,099 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1282 [2021-03-11 14:41:13,099 INFO L428 AbstractCegarLoop]: === Iteration 1284 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:13,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1365310027, now seen corresponding path program 1278 times [2021-03-11 14:41:13,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:13,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391974000] [2021-03-11 14:41:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:13,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:13,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:13,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:13,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:13,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:13,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:41:13,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:41:13,186 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:13,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:13,225 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:13,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:13,291 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:13,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:13,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391974000] [2021-03-11 14:41:13,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:13,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:13,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694236016] [2021-03-11 14:41:13,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:13,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:13,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:13,349 INFO L87 Difference]: Start difference. First operand 392 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:13,605 INFO L93 Difference]: Finished difference Result 655 states and 1936 transitions. [2021-03-11 14:41:13,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:13,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:13,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:13,609 INFO L225 Difference]: With dead ends: 655 [2021-03-11 14:41:13,609 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:41:13,609 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 330.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:41:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 385. [2021-03-11 14:41:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.453125) internal successors, (1326), 384 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1326 transitions. [2021-03-11 14:41:13,615 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1326 transitions. Word has length 22 [2021-03-11 14:41:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:13,615 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1326 transitions. [2021-03-11 14:41:13,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1326 transitions. [2021-03-11 14:41:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:13,616 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:13,616 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:13,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1283 [2021-03-11 14:41:13,616 INFO L428 AbstractCegarLoop]: === Iteration 1285 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1390684473, now seen corresponding path program 1279 times [2021-03-11 14:41:13,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:13,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921780137] [2021-03-11 14:41:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:13,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:13,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:13,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:13,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:13,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:13,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:13,694 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:13,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:13,768 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:13,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:13,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:13,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:13,925 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:13,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:13,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921780137] [2021-03-11 14:41:13,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:13,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:13,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888772815] [2021-03-11 14:41:13,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:13,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:13,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:13,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:13,986 INFO L87 Difference]: Start difference. First operand 385 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:14,249 INFO L93 Difference]: Finished difference Result 658 states and 1943 transitions. [2021-03-11 14:41:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:14,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:14,253 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:41:14,253 INFO L226 Difference]: Without dead ends: 647 [2021-03-11 14:41:14,253 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 442.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-03-11 14:41:14,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 393. [2021-03-11 14:41:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.436224489795918) internal successors, (1347), 392 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1347 transitions. [2021-03-11 14:41:14,260 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1347 transitions. Word has length 22 [2021-03-11 14:41:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:14,260 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1347 transitions. [2021-03-11 14:41:14,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,260 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1347 transitions. [2021-03-11 14:41:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:14,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:14,261 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:14,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1284 [2021-03-11 14:41:14,261 INFO L428 AbstractCegarLoop]: === Iteration 1286 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:14,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1852471601, now seen corresponding path program 1280 times [2021-03-11 14:41:14,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:14,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600859498] [2021-03-11 14:41:14,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:14,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:14,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:14,309 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:14,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:14,341 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:14,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:14,414 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:14,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:14,492 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:14,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:14,537 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:14,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:14,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600859498] [2021-03-11 14:41:14,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:14,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:14,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440250110] [2021-03-11 14:41:14,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:14,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:14,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:14,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:14,581 INFO L87 Difference]: Start difference. First operand 393 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:14,774 INFO L93 Difference]: Finished difference Result 661 states and 1946 transitions. [2021-03-11 14:41:14,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:14,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:14,778 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:41:14,778 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:41:14,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 392.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:41:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 390. [2021-03-11 14:41:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.442159383033419) internal successors, (1339), 389 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1339 transitions. [2021-03-11 14:41:14,784 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1339 transitions. Word has length 22 [2021-03-11 14:41:14,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:14,784 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1339 transitions. [2021-03-11 14:41:14,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:14,784 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1339 transitions. [2021-03-11 14:41:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:14,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:14,785 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:14,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1285 [2021-03-11 14:41:14,785 INFO L428 AbstractCegarLoop]: === Iteration 1287 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:14,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:14,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1978429795, now seen corresponding path program 1281 times [2021-03-11 14:41:14,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:14,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367355636] [2021-03-11 14:41:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:14,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:14,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:14,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:14,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:14,831 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:14,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:14,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:14,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:14,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:14,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:15,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:15,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:15,085 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:15,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:15,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367355636] [2021-03-11 14:41:15,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:15,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:15,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892332081] [2021-03-11 14:41:15,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:15,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:15,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:15,149 INFO L87 Difference]: Start difference. First operand 390 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:15,389 INFO L93 Difference]: Finished difference Result 661 states and 1945 transitions. [2021-03-11 14:41:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:15,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:15,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:15,393 INFO L225 Difference]: With dead ends: 661 [2021-03-11 14:41:15,393 INFO L226 Difference]: Without dead ends: 650 [2021-03-11 14:41:15,393 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 439.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:15,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-03-11 14:41:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 394. [2021-03-11 14:41:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4249363867684477) internal successors, (1346), 393 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1346 transitions. [2021-03-11 14:41:15,399 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1346 transitions. Word has length 22 [2021-03-11 14:41:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:15,400 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1346 transitions. [2021-03-11 14:41:15,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1346 transitions. [2021-03-11 14:41:15,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:15,400 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:15,400 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:15,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1286 [2021-03-11 14:41:15,400 INFO L428 AbstractCegarLoop]: === Iteration 1288 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:15,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:15,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1905122383, now seen corresponding path program 1282 times [2021-03-11 14:41:15,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:15,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090230575] [2021-03-11 14:41:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:15,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:15,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:15,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:15,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:15,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:15,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:15,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:15,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:15,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:15,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:15,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:15,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:15,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:15,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090230575] [2021-03-11 14:41:15,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:15,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:15,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096768110] [2021-03-11 14:41:15,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:15,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:15,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:15,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:15,762 INFO L87 Difference]: Start difference. First operand 394 states and 1346 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:15,967 INFO L93 Difference]: Finished difference Result 666 states and 1951 transitions. [2021-03-11 14:41:15,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:15,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:15,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:15,972 INFO L225 Difference]: With dead ends: 666 [2021-03-11 14:41:15,972 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:41:15,972 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 392.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:41:15,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 390. [2021-03-11 14:41:15,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4318766066838045) internal successors, (1335), 389 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1335 transitions. [2021-03-11 14:41:15,978 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1335 transitions. Word has length 22 [2021-03-11 14:41:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:15,978 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1335 transitions. [2021-03-11 14:41:15,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:15,978 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1335 transitions. [2021-03-11 14:41:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:15,979 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:15,979 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:15,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1287 [2021-03-11 14:41:15,979 INFO L428 AbstractCegarLoop]: === Iteration 1289 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:15,979 INFO L82 PathProgramCache]: Analyzing trace with hash -169965923, now seen corresponding path program 1283 times [2021-03-11 14:41:15,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:15,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763337794] [2021-03-11 14:41:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:15,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:15,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:15,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:15,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:16,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:16,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:16,035 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:16,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:16,086 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:16,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:16,126 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:16,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:16,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:16,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:16,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763337794] [2021-03-11 14:41:16,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:16,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:16,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608236367] [2021-03-11 14:41:16,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:16,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:16,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:16,224 INFO L87 Difference]: Start difference. First operand 390 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:16,495 INFO L93 Difference]: Finished difference Result 671 states and 1963 transitions. [2021-03-11 14:41:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:16,499 INFO L225 Difference]: With dead ends: 671 [2021-03-11 14:41:16,499 INFO L226 Difference]: Without dead ends: 657 [2021-03-11 14:41:16,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 324.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-03-11 14:41:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 398. [2021-03-11 14:41:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.397984886649874) internal successors, (1349), 397 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1349 transitions. [2021-03-11 14:41:16,506 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1349 transitions. Word has length 22 [2021-03-11 14:41:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:16,506 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1349 transitions. [2021-03-11 14:41:16,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1349 transitions. [2021-03-11 14:41:16,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:16,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:16,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:16,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1288 [2021-03-11 14:41:16,506 INFO L428 AbstractCegarLoop]: === Iteration 1290 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:16,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:16,507 INFO L82 PathProgramCache]: Analyzing trace with hash -151531897, now seen corresponding path program 1284 times [2021-03-11 14:41:16,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:16,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866926273] [2021-03-11 14:41:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:16,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:16,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:16,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:16,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:16,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:16,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:16,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:16,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:16,586 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:16,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:16,660 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:16,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:16,717 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:16,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:16,786 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:16,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:16,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866926273] [2021-03-11 14:41:16,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:16,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:16,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579801859] [2021-03-11 14:41:16,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:16,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:16,854 INFO L87 Difference]: Start difference. First operand 398 states and 1349 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:17,056 INFO L93 Difference]: Finished difference Result 673 states and 1960 transitions. [2021-03-11 14:41:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:17,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:17,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:17,060 INFO L225 Difference]: With dead ends: 673 [2021-03-11 14:41:17,060 INFO L226 Difference]: Without dead ends: 644 [2021-03-11 14:41:17,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 377.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-03-11 14:41:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 385. [2021-03-11 14:41:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4401041666666665) internal successors, (1321), 384 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1321 transitions. [2021-03-11 14:41:17,067 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1321 transitions. Word has length 22 [2021-03-11 14:41:17,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:17,067 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1321 transitions. [2021-03-11 14:41:17,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,067 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1321 transitions. [2021-03-11 14:41:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:17,067 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:17,067 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:17,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1289 [2021-03-11 14:41:17,067 INFO L428 AbstractCegarLoop]: === Iteration 1291 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:17,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash 625109255, now seen corresponding path program 1285 times [2021-03-11 14:41:17,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:17,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344209204] [2021-03-11 14:41:17,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:17,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:17,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:17,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:17,115 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:17,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:17,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:17,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:17,221 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:17,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:17,281 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:17,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:17,348 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:17,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:17,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344209204] [2021-03-11 14:41:17,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:17,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:17,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510664216] [2021-03-11 14:41:17,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:17,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:17,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:17,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:17,415 INFO L87 Difference]: Start difference. First operand 385 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:17,636 INFO L93 Difference]: Finished difference Result 650 states and 1921 transitions. [2021-03-11 14:41:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:17,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:17,639 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:41:17,639 INFO L226 Difference]: Without dead ends: 639 [2021-03-11 14:41:17,639 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 393.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-03-11 14:41:17,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 392. [2021-03-11 14:41:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.4271099744245523) internal successors, (1340), 391 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1340 transitions. [2021-03-11 14:41:17,645 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1340 transitions. Word has length 22 [2021-03-11 14:41:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:17,646 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1340 transitions. [2021-03-11 14:41:17,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1340 transitions. [2021-03-11 14:41:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:17,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:17,646 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:17,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1290 [2021-03-11 14:41:17,646 INFO L428 AbstractCegarLoop]: === Iteration 1292 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1428516257, now seen corresponding path program 1286 times [2021-03-11 14:41:17,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:17,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940681135] [2021-03-11 14:41:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:17,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:17,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:17,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:17,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:17,678 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:17,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:17,700 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:17,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:17,762 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:17,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:17,817 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:17,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:17,880 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:17,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:17,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940681135] [2021-03-11 14:41:17,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:17,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:17,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627318682] [2021-03-11 14:41:17,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:17,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:17,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:17,944 INFO L87 Difference]: Start difference. First operand 392 states and 1340 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:18,196 INFO L93 Difference]: Finished difference Result 651 states and 1920 transitions. [2021-03-11 14:41:18,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:18,199 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:18,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:18,200 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:41:18,200 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:41:18,200 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 378.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:41:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 389. [2021-03-11 14:41:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4329896907216493) internal successors, (1332), 388 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1332 transitions. [2021-03-11 14:41:18,207 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1332 transitions. Word has length 22 [2021-03-11 14:41:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:18,207 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1332 transitions. [2021-03-11 14:41:18,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1332 transitions. [2021-03-11 14:41:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:18,208 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:18,208 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:18,208 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1291 [2021-03-11 14:41:18,208 INFO L428 AbstractCegarLoop]: === Iteration 1293 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1719200843, now seen corresponding path program 1287 times [2021-03-11 14:41:18,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:18,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765171462] [2021-03-11 14:41:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:18,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:18,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:18,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:18,255 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:18,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:18,288 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:18,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:18,363 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:18,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:18,450 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:18,517 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:18,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:18,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765171462] [2021-03-11 14:41:18,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:18,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:18,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004917856] [2021-03-11 14:41:18,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:18,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:18,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:18,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:18,581 INFO L87 Difference]: Start difference. First operand 389 states and 1332 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:18,830 INFO L93 Difference]: Finished difference Result 651 states and 1917 transitions. [2021-03-11 14:41:18,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:18,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:18,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:18,835 INFO L225 Difference]: With dead ends: 651 [2021-03-11 14:41:18,835 INFO L226 Difference]: Without dead ends: 640 [2021-03-11 14:41:18,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 447.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-03-11 14:41:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 393. [2021-03-11 14:41:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4158163265306123) internal successors, (1339), 392 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1339 transitions. [2021-03-11 14:41:18,841 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1339 transitions. Word has length 22 [2021-03-11 14:41:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:18,841 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1339 transitions. [2021-03-11 14:41:18,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1339 transitions. [2021-03-11 14:41:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:18,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:18,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:18,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1292 [2021-03-11 14:41:18,842 INFO L428 AbstractCegarLoop]: === Iteration 1294 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:18,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1792508255, now seen corresponding path program 1288 times [2021-03-11 14:41:18,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:18,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492046719] [2021-03-11 14:41:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:18,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:18,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:18,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:18,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:18,890 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:18,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:18,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:18,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:18,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:18,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:19,078 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:19,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:19,127 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:19,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:19,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492046719] [2021-03-11 14:41:19,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:19,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:19,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224426805] [2021-03-11 14:41:19,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:19,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:19,175 INFO L87 Difference]: Start difference. First operand 393 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:19,375 INFO L93 Difference]: Finished difference Result 656 states and 1923 transitions. [2021-03-11 14:41:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:19,379 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:41:19,379 INFO L226 Difference]: Without dead ends: 636 [2021-03-11 14:41:19,379 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 364.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-03-11 14:41:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 389. [2021-03-11 14:41:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.422680412371134) internal successors, (1328), 388 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1328 transitions. [2021-03-11 14:41:19,385 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1328 transitions. Word has length 22 [2021-03-11 14:41:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:19,385 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1328 transitions. [2021-03-11 14:41:19,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1328 transitions. [2021-03-11 14:41:19,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:19,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:19,386 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:19,386 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1293 [2021-03-11 14:41:19,386 INFO L428 AbstractCegarLoop]: === Iteration 1295 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:19,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:19,386 INFO L82 PathProgramCache]: Analyzing trace with hash 844013515, now seen corresponding path program 1289 times [2021-03-11 14:41:19,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:19,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119762588] [2021-03-11 14:41:19,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:19,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:19,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:19,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:19,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:19,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:19,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:19,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:19,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:19,465 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:19,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:19,536 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:19,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:19,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:19,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:19,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:19,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:19,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119762588] [2021-03-11 14:41:19,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:19,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:19,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387288946] [2021-03-11 14:41:19,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:19,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:19,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:19,761 INFO L87 Difference]: Start difference. First operand 389 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:20,019 INFO L93 Difference]: Finished difference Result 654 states and 1920 transitions. [2021-03-11 14:41:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:20,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:20,023 INFO L225 Difference]: With dead ends: 654 [2021-03-11 14:41:20,023 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:41:20,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 457.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:20,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:41:20,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 394. [2021-03-11 14:41:20,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.4020356234096694) internal successors, (1337), 393 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1337 transitions. [2021-03-11 14:41:20,030 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1337 transitions. Word has length 22 [2021-03-11 14:41:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:20,030 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1337 transitions. [2021-03-11 14:41:20,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,030 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1337 transitions. [2021-03-11 14:41:20,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:20,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:20,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:20,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1294 [2021-03-11 14:41:20,031 INFO L428 AbstractCegarLoop]: === Iteration 1296 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:20,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1740340473, now seen corresponding path program 1290 times [2021-03-11 14:41:20,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:20,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466619784] [2021-03-11 14:41:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:20,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:20,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:20,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:20,079 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:20,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:20,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:20,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:20,187 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:20,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:20,280 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:20,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:20,351 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:20,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:20,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466619784] [2021-03-11 14:41:20,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:20,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:20,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722596523] [2021-03-11 14:41:20,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:20,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:20,416 INFO L87 Difference]: Start difference. First operand 394 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:20,687 INFO L93 Difference]: Finished difference Result 650 states and 1909 transitions. [2021-03-11 14:41:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:20,691 INFO L225 Difference]: With dead ends: 650 [2021-03-11 14:41:20,691 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:41:20,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 417.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:20,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:41:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 385. [2021-03-11 14:41:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4296875) internal successors, (1317), 384 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1317 transitions. [2021-03-11 14:41:20,698 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1317 transitions. Word has length 22 [2021-03-11 14:41:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:20,698 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1317 transitions. [2021-03-11 14:41:20,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1317 transitions. [2021-03-11 14:41:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:20,698 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:20,698 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:20,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1295 [2021-03-11 14:41:20,699 INFO L428 AbstractCegarLoop]: === Iteration 1297 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:20,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash 491468209, now seen corresponding path program 1291 times [2021-03-11 14:41:20,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:20,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439224366] [2021-03-11 14:41:20,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:20,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:20,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:20,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:20,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:20,765 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:20,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:20,794 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:20,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:20,824 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:20,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:20,861 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:20,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:20,908 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:20,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:20,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439224366] [2021-03-11 14:41:20,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:20,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:20,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319991659] [2021-03-11 14:41:20,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:20,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:20,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:20,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:20,953 INFO L87 Difference]: Start difference. First operand 385 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:21,187 INFO L93 Difference]: Finished difference Result 667 states and 1957 transitions. [2021-03-11 14:41:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:21,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:21,191 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:41:21,191 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:41:21,191 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 326.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:41:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 395. [2021-03-11 14:41:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.4111675126903553) internal successors, (1344), 394 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1344 transitions. [2021-03-11 14:41:21,198 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1344 transitions. Word has length 22 [2021-03-11 14:41:21,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:21,198 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1344 transitions. [2021-03-11 14:41:21,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,198 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1344 transitions. [2021-03-11 14:41:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:21,198 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:21,198 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:21,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1296 [2021-03-11 14:41:21,198 INFO L428 AbstractCegarLoop]: === Iteration 1298 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:21,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:21,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1200711073, now seen corresponding path program 1292 times [2021-03-11 14:41:21,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:21,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654412106] [2021-03-11 14:41:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:21,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:21,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:21,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:21,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:21,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:21,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:21,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:21,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:21,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:21,382 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:21,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:21,452 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:21,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:21,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654412106] [2021-03-11 14:41:21,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:21,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:21,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905954384] [2021-03-11 14:41:21,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:21,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:21,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:21,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:21,518 INFO L87 Difference]: Start difference. First operand 395 states and 1344 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:21,763 INFO L93 Difference]: Finished difference Result 665 states and 1949 transitions. [2021-03-11 14:41:21,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:21,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:21,767 INFO L225 Difference]: With dead ends: 665 [2021-03-11 14:41:21,767 INFO L226 Difference]: Without dead ends: 649 [2021-03-11 14:41:21,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 399.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-03-11 14:41:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 391. [2021-03-11 14:41:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.417948717948718) internal successors, (1333), 390 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1333 transitions. [2021-03-11 14:41:21,774 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1333 transitions. Word has length 22 [2021-03-11 14:41:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:21,774 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1333 transitions. [2021-03-11 14:41:21,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1333 transitions. [2021-03-11 14:41:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:21,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:21,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:21,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1297 [2021-03-11 14:41:21,775 INFO L428 AbstractCegarLoop]: === Iteration 1299 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:21,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1980873205, now seen corresponding path program 1293 times [2021-03-11 14:41:21,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:21,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452594058] [2021-03-11 14:41:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:21,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:21,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:21,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:21,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:21,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:21,859 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:21,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:21,904 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:21,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:21,965 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:21,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:22,035 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:22,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:22,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452594058] [2021-03-11 14:41:22,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:22,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:22,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929520083] [2021-03-11 14:41:22,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:22,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:22,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:22,100 INFO L87 Difference]: Start difference. First operand 391 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,344 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:41:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:22,369 INFO L93 Difference]: Finished difference Result 667 states and 1949 transitions. [2021-03-11 14:41:22,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:22,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:22,374 INFO L225 Difference]: With dead ends: 667 [2021-03-11 14:41:22,374 INFO L226 Difference]: Without dead ends: 653 [2021-03-11 14:41:22,374 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 406.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-03-11 14:41:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 399. [2021-03-11 14:41:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 3.3844221105527637) internal successors, (1347), 398 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 1347 transitions. [2021-03-11 14:41:22,381 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 1347 transitions. Word has length 22 [2021-03-11 14:41:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:22,381 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 1347 transitions. [2021-03-11 14:41:22,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 1347 transitions. [2021-03-11 14:41:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:22,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:22,382 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:22,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1298 [2021-03-11 14:41:22,382 INFO L428 AbstractCegarLoop]: === Iteration 1300 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:22,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:22,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1999307231, now seen corresponding path program 1294 times [2021-03-11 14:41:22,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:22,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005709102] [2021-03-11 14:41:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:22,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:22,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:22,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:22,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:22,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:22,450 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:22,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:22,482 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:22,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:22,524 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:22,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:22,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:22,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:22,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005709102] [2021-03-11 14:41:22,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:22,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:22,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319688557] [2021-03-11 14:41:22,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:22,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:22,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:22,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:22,637 INFO L87 Difference]: Start difference. First operand 399 states and 1347 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:22,870 INFO L93 Difference]: Finished difference Result 669 states and 1946 transitions. [2021-03-11 14:41:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:22,874 INFO L225 Difference]: With dead ends: 669 [2021-03-11 14:41:22,874 INFO L226 Difference]: Without dead ends: 645 [2021-03-11 14:41:22,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 290.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-03-11 14:41:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 391. [2021-03-11 14:41:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.4025641025641025) internal successors, (1327), 390 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1327 transitions. [2021-03-11 14:41:22,881 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1327 transitions. Word has length 22 [2021-03-11 14:41:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:22,881 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1327 transitions. [2021-03-11 14:41:22,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1327 transitions. [2021-03-11 14:41:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:22,882 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:22,882 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:22,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1299 [2021-03-11 14:41:22,882 INFO L428 AbstractCegarLoop]: === Iteration 1301 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:22,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash -629256267, now seen corresponding path program 1295 times [2021-03-11 14:41:22,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:22,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711847993] [2021-03-11 14:41:22,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:22,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:22,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:22,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:22,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:22,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:22,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:22,971 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:22,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:23,021 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:23,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:23,127 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:23,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:23,205 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:23,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:23,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711847993] [2021-03-11 14:41:23,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:23,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:23,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415933666] [2021-03-11 14:41:23,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:23,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:23,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:23,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:23,277 INFO L87 Difference]: Start difference. First operand 391 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:23,581 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:41:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:23,608 INFO L93 Difference]: Finished difference Result 660 states and 1928 transitions. [2021-03-11 14:41:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:23,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:23,613 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:41:23,613 INFO L226 Difference]: Without dead ends: 648 [2021-03-11 14:41:23,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 478.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-03-11 14:41:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 396. [2021-03-11 14:41:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.382278481012658) internal successors, (1336), 395 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1336 transitions. [2021-03-11 14:41:23,619 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1336 transitions. Word has length 22 [2021-03-11 14:41:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:23,619 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1336 transitions. [2021-03-11 14:41:23,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:23,619 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1336 transitions. [2021-03-11 14:41:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:23,620 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:23,620 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:23,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1300 [2021-03-11 14:41:23,620 INFO L428 AbstractCegarLoop]: === Iteration 1302 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:23,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1081357041, now seen corresponding path program 1296 times [2021-03-11 14:41:23,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:23,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796053715] [2021-03-11 14:41:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:23,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:23,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:23,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:23,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:23,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:23,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:23,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:41:23,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:41:23,707 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:23,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:23,754 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:23,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:23,850 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:23,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:23,924 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:23,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:23,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796053715] [2021-03-11 14:41:23,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:23,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:23,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147135999] [2021-03-11 14:41:23,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:23,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:23,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:23,990 INFO L87 Difference]: Start difference. First operand 396 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:24,217 INFO L93 Difference]: Finished difference Result 656 states and 1917 transitions. [2021-03-11 14:41:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:24,221 INFO L225 Difference]: With dead ends: 656 [2021-03-11 14:41:24,221 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:41:24,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 403.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:41:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 380. [2021-03-11 14:41:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.440633245382586) internal successors, (1304), 379 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1304 transitions. [2021-03-11 14:41:24,228 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1304 transitions. Word has length 22 [2021-03-11 14:41:24,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:24,228 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1304 transitions. [2021-03-11 14:41:24,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,228 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1304 transitions. [2021-03-11 14:41:24,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:24,229 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:24,229 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:24,229 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1301 [2021-03-11 14:41:24,229 INFO L428 AbstractCegarLoop]: === Iteration 1303 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1896051251, now seen corresponding path program 1297 times [2021-03-11 14:41:24,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:24,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935346636] [2021-03-11 14:41:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:24,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:24,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:24,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:24,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:24,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:24,359 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:24,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:24,445 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:24,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:24,495 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:24,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:24,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935346636] [2021-03-11 14:41:24,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:24,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:24,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146793046] [2021-03-11 14:41:24,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:24,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:24,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:24,542 INFO L87 Difference]: Start difference. First operand 380 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:24,747 INFO L93 Difference]: Finished difference Result 637 states and 1888 transitions. [2021-03-11 14:41:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:24,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:24,750 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:41:24,750 INFO L226 Difference]: Without dead ends: 627 [2021-03-11 14:41:24,751 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 392.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:24,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-03-11 14:41:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 388. [2021-03-11 14:41:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4366925064599485) internal successors, (1330), 387 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1330 transitions. [2021-03-11 14:41:24,757 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:24,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:24,757 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1330 transitions. [2021-03-11 14:41:24,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1330 transitions. [2021-03-11 14:41:24,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:24,758 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:24,758 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:24,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1302 [2021-03-11 14:41:24,758 INFO L428 AbstractCegarLoop]: === Iteration 1304 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:24,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:24,758 INFO L82 PathProgramCache]: Analyzing trace with hash 203871969, now seen corresponding path program 1298 times [2021-03-11 14:41:24,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:24,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970005037] [2021-03-11 14:41:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:24,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:24,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:24,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:24,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:24,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:24,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:24,885 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:24,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:24,981 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:24,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:25,052 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:25,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:25,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:25,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970005037] [2021-03-11 14:41:25,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:25,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:25,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543589373] [2021-03-11 14:41:25,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:25,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:25,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:25,120 INFO L87 Difference]: Start difference. First operand 388 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,350 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:25,377 INFO L93 Difference]: Finished difference Result 641 states and 1894 transitions. [2021-03-11 14:41:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:25,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:25,381 INFO L225 Difference]: With dead ends: 641 [2021-03-11 14:41:25,381 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:41:25,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 445.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:41:25,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 386. [2021-03-11 14:41:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4415584415584415) internal successors, (1325), 385 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1325 transitions. [2021-03-11 14:41:25,388 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1325 transitions. Word has length 22 [2021-03-11 14:41:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:25,388 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1325 transitions. [2021-03-11 14:41:25,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1325 transitions. [2021-03-11 14:41:25,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:25,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:25,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:25,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1303 [2021-03-11 14:41:25,388 INFO L428 AbstractCegarLoop]: === Iteration 1305 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash -790600863, now seen corresponding path program 1299 times [2021-03-11 14:41:25,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:25,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586875108] [2021-03-11 14:41:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:25,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:25,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:25,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:25,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:25,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:25,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:25,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:25,571 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:25,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:25,643 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:25,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586875108] [2021-03-11 14:41:25,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:25,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:25,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444109515] [2021-03-11 14:41:25,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:25,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:25,710 INFO L87 Difference]: Start difference. First operand 386 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:25,958 INFO L93 Difference]: Finished difference Result 635 states and 1882 transitions. [2021-03-11 14:41:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:25,963 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:41:25,963 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:41:25,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 401.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:41:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 388. [2021-03-11 14:41:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4315245478036176) internal successors, (1328), 387 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1328 transitions. [2021-03-11 14:41:25,969 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1328 transitions. Word has length 22 [2021-03-11 14:41:25,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:25,969 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1328 transitions. [2021-03-11 14:41:25,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1328 transitions. [2021-03-11 14:41:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:25,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:25,970 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:25,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1304 [2021-03-11 14:41:25,970 INFO L428 AbstractCegarLoop]: === Iteration 1306 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:25,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:25,970 INFO L82 PathProgramCache]: Analyzing trace with hash -963848555, now seen corresponding path program 1300 times [2021-03-11 14:41:25,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:25,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594913733] [2021-03-11 14:41:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:25,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:25,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:25,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:25,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:26,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:26,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:26,096 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:26,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:26,137 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:26,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:26,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:26,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:26,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594913733] [2021-03-11 14:41:26,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:26,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:26,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841119197] [2021-03-11 14:41:26,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:26,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:26,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:26,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:26,237 INFO L87 Difference]: Start difference. First operand 388 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:26,440 INFO L93 Difference]: Finished difference Result 637 states and 1884 transitions. [2021-03-11 14:41:26,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:26,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:26,444 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:41:26,444 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:41:26,445 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 345.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:26,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:41:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 386. [2021-03-11 14:41:26,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4363636363636365) internal successors, (1323), 385 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1323 transitions. [2021-03-11 14:41:26,451 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1323 transitions. Word has length 22 [2021-03-11 14:41:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:26,451 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1323 transitions. [2021-03-11 14:41:26,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1323 transitions. [2021-03-11 14:41:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:26,452 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:26,452 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:26,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1305 [2021-03-11 14:41:26,452 INFO L428 AbstractCegarLoop]: === Iteration 1307 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash -871839187, now seen corresponding path program 1301 times [2021-03-11 14:41:26,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:26,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515700193] [2021-03-11 14:41:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:26,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:26,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:26,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:26,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:26,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:26,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:26,576 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:26,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:26,634 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:26,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:26,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:26,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:26,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515700193] [2021-03-11 14:41:26,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:26,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:26,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184603645] [2021-03-11 14:41:26,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:26,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:26,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:26,768 INFO L87 Difference]: Start difference. First operand 386 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:26,980 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:27,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:27,000 INFO L93 Difference]: Finished difference Result 645 states and 1902 transitions. [2021-03-11 14:41:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:27,005 INFO L225 Difference]: With dead ends: 645 [2021-03-11 14:41:27,005 INFO L226 Difference]: Without dead ends: 631 [2021-03-11 14:41:27,005 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 397.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:27,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-03-11 14:41:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 390. [2021-03-11 14:41:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4190231362467864) internal successors, (1330), 389 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1330 transitions. [2021-03-11 14:41:27,011 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:27,011 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1330 transitions. [2021-03-11 14:41:27,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1330 transitions. [2021-03-11 14:41:27,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:27,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:27,012 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:27,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1306 [2021-03-11 14:41:27,012 INFO L428 AbstractCegarLoop]: === Iteration 1308 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1715892511, now seen corresponding path program 1302 times [2021-03-11 14:41:27,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:27,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928229351] [2021-03-11 14:41:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:27,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:27,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:27,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:27,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:27,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:27,139 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:27,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:27,198 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:27,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:27,272 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:27,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:27,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:27,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928229351] [2021-03-11 14:41:27,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:27,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:27,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414076031] [2021-03-11 14:41:27,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:27,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:27,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:27,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:27,342 INFO L87 Difference]: Start difference. First operand 390 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:27,551 INFO L93 Difference]: Finished difference Result 643 states and 1894 transitions. [2021-03-11 14:41:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:27,554 INFO L225 Difference]: With dead ends: 643 [2021-03-11 14:41:27,554 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:41:27,554 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 388.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:41:27,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 384. [2021-03-11 14:41:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.441253263707572) internal successors, (1318), 383 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1318 transitions. [2021-03-11 14:41:27,560 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1318 transitions. Word has length 22 [2021-03-11 14:41:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:27,561 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1318 transitions. [2021-03-11 14:41:27,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1318 transitions. [2021-03-11 14:41:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:27,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:27,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:27,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1307 [2021-03-11 14:41:27,561 INFO L428 AbstractCegarLoop]: === Iteration 1309 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1304824457, now seen corresponding path program 1303 times [2021-03-11 14:41:27,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:27,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209682126] [2021-03-11 14:41:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:27,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:27,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:27,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:27,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:27,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:27,616 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:27,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:27,666 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:27,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:27,755 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:27,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:27,822 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:27,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:27,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209682126] [2021-03-11 14:41:27,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:27,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:27,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511109301] [2021-03-11 14:41:27,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:27,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:27,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:27,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:27,889 INFO L87 Difference]: Start difference. First operand 384 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:28,148 INFO L93 Difference]: Finished difference Result 644 states and 1897 transitions. [2021-03-11 14:41:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:28,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:28,152 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:41:28,152 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:41:28,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 411.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:28,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:41:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 390. [2021-03-11 14:41:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4267352185089974) internal successors, (1333), 389 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1333 transitions. [2021-03-11 14:41:28,162 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1333 transitions. Word has length 22 [2021-03-11 14:41:28,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:28,162 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1333 transitions. [2021-03-11 14:41:28,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,162 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1333 transitions. [2021-03-11 14:41:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:28,162 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:28,162 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:28,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1308 [2021-03-11 14:41:28,162 INFO L428 AbstractCegarLoop]: === Iteration 1310 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:28,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:28,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1297963557, now seen corresponding path program 1304 times [2021-03-11 14:41:28,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:28,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707750705] [2021-03-11 14:41:28,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:28,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:28,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:28,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:28,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:28,245 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:28,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:28,322 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:28,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:28,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:28,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:28,489 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:28,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:28,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707750705] [2021-03-11 14:41:28,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:28,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:28,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209818108] [2021-03-11 14:41:28,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:28,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:28,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:28,556 INFO L87 Difference]: Start difference. First operand 390 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:28,777 INFO L93 Difference]: Finished difference Result 648 states and 1903 transitions. [2021-03-11 14:41:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:28,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:28,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:28,781 INFO L225 Difference]: With dead ends: 648 [2021-03-11 14:41:28,781 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:41:28,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 470.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:28,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:41:28,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 388. [2021-03-11 14:41:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4315245478036176) internal successors, (1328), 387 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1328 transitions. [2021-03-11 14:41:28,788 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1328 transitions. Word has length 22 [2021-03-11 14:41:28,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:28,788 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1328 transitions. [2021-03-11 14:41:28,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:28,788 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1328 transitions. [2021-03-11 14:41:28,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:28,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:28,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:28,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1309 [2021-03-11 14:41:28,788 INFO L428 AbstractCegarLoop]: === Iteration 1311 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:28,789 INFO L82 PathProgramCache]: Analyzing trace with hash -769594655, now seen corresponding path program 1305 times [2021-03-11 14:41:28,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:28,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115584567] [2021-03-11 14:41:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:28,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:28,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:28,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:28,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:28,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:28,869 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:28,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:28,946 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:28,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:29,042 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:29,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:29,112 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:29,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:29,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115584567] [2021-03-11 14:41:29,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:29,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:29,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209058785] [2021-03-11 14:41:29,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:29,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:29,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:29,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:29,158 INFO L87 Difference]: Start difference. First operand 388 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:29,311 INFO L93 Difference]: Finished difference Result 647 states and 1900 transitions. [2021-03-11 14:41:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:29,314 INFO L225 Difference]: With dead ends: 647 [2021-03-11 14:41:29,314 INFO L226 Difference]: Without dead ends: 637 [2021-03-11 14:41:29,314 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 411.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-03-11 14:41:29,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 391. [2021-03-11 14:41:29,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.417948717948718) internal successors, (1333), 390 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1333 transitions. [2021-03-11 14:41:29,320 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1333 transitions. Word has length 22 [2021-03-11 14:41:29,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:29,320 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1333 transitions. [2021-03-11 14:41:29,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1333 transitions. [2021-03-11 14:41:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:29,321 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:29,321 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:29,321 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1310 [2021-03-11 14:41:29,321 INFO L428 AbstractCegarLoop]: === Iteration 1312 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:29,321 INFO L82 PathProgramCache]: Analyzing trace with hash 546562649, now seen corresponding path program 1306 times [2021-03-11 14:41:29,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:29,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13337608] [2021-03-11 14:41:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:29,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:29,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:29,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:29,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:29,398 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:29,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:29,464 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:29,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:29,556 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:29,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:29,626 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:29,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:29,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13337608] [2021-03-11 14:41:29,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:29,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:29,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435147088] [2021-03-11 14:41:29,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:29,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:29,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:29,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:29,690 INFO L87 Difference]: Start difference. First operand 391 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:29,888 INFO L93 Difference]: Finished difference Result 653 states and 1909 transitions. [2021-03-11 14:41:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:29,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:29,892 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:41:29,892 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:41:29,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 399.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:29,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:41:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 388. [2021-03-11 14:41:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4237726098191215) internal successors, (1325), 387 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1325 transitions. [2021-03-11 14:41:29,898 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1325 transitions. Word has length 22 [2021-03-11 14:41:29,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:29,898 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1325 transitions. [2021-03-11 14:41:29,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:29,898 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1325 transitions. [2021-03-11 14:41:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:29,899 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:29,899 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:29,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1311 [2021-03-11 14:41:29,899 INFO L428 AbstractCegarLoop]: === Iteration 1313 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash -850832979, now seen corresponding path program 1307 times [2021-03-11 14:41:29,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:29,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647714300] [2021-03-11 14:41:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:29,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:29,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:29,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:29,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:29,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:29,979 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:29,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:30,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:30,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:30,112 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:30,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:30,181 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:30,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:30,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647714300] [2021-03-11 14:41:30,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:30,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:30,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999454899] [2021-03-11 14:41:30,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:30,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:30,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:30,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:30,245 INFO L87 Difference]: Start difference. First operand 388 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:30,473 INFO L93 Difference]: Finished difference Result 660 states and 1926 transitions. [2021-03-11 14:41:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:30,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:30,477 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:41:30,477 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:41:30,477 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 421.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:41:30,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 396. [2021-03-11 14:41:30,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.389873417721519) internal successors, (1339), 395 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1339 transitions. [2021-03-11 14:41:30,484 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1339 transitions. Word has length 22 [2021-03-11 14:41:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:30,484 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1339 transitions. [2021-03-11 14:41:30,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,484 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1339 transitions. [2021-03-11 14:41:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:30,484 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:30,484 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:30,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1312 [2021-03-11 14:41:30,484 INFO L428 AbstractCegarLoop]: === Iteration 1314 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1505132001, now seen corresponding path program 1308 times [2021-03-11 14:41:30,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:30,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640818290] [2021-03-11 14:41:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:30,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:30,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:30,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:30,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:30,564 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:30,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:30,629 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:30,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:30,668 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:30,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:30,715 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:30,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:30,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640818290] [2021-03-11 14:41:30,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:30,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:30,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878327179] [2021-03-11 14:41:30,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:30,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:30,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:30,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:30,758 INFO L87 Difference]: Start difference. First operand 396 states and 1339 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:30,923 INFO L93 Difference]: Finished difference Result 662 states and 1923 transitions. [2021-03-11 14:41:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:30,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:30,926 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:41:30,926 INFO L226 Difference]: Without dead ends: 634 [2021-03-11 14:41:30,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 308.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-03-11 14:41:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 384. [2021-03-11 14:41:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.430809399477807) internal successors, (1314), 383 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1314 transitions. [2021-03-11 14:41:30,935 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1314 transitions. Word has length 22 [2021-03-11 14:41:30,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:30,936 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1314 transitions. [2021-03-11 14:41:30,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:30,936 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1314 transitions. [2021-03-11 14:41:30,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:30,936 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:30,936 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:30,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1313 [2021-03-11 14:41:30,936 INFO L428 AbstractCegarLoop]: === Iteration 1315 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:30,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1378346185, now seen corresponding path program 1309 times [2021-03-11 14:41:30,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:30,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617900157] [2021-03-11 14:41:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:30,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:30,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:30,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:30,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:30,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:31,018 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:31,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:31,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:31,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:31,145 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:31,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:31,213 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:31,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:31,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617900157] [2021-03-11 14:41:31,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:31,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:31,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535049429] [2021-03-11 14:41:31,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:31,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:31,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:31,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:31,280 INFO L87 Difference]: Start difference. First operand 384 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:31,520 INFO L93 Difference]: Finished difference Result 636 states and 1876 transitions. [2021-03-11 14:41:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:31,524 INFO L225 Difference]: With dead ends: 636 [2021-03-11 14:41:31,524 INFO L226 Difference]: Without dead ends: 626 [2021-03-11 14:41:31,524 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 416.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-03-11 14:41:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 389. [2021-03-11 14:41:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.420103092783505) internal successors, (1327), 388 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1327 transitions. [2021-03-11 14:41:31,531 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1327 transitions. Word has length 22 [2021-03-11 14:41:31,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:31,531 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1327 transitions. [2021-03-11 14:41:31,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1327 transitions. [2021-03-11 14:41:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:31,531 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:31,531 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:31,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1314 [2021-03-11 14:41:31,532 INFO L428 AbstractCegarLoop]: === Iteration 1316 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:31,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:31,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1551593877, now seen corresponding path program 1310 times [2021-03-11 14:41:31,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:31,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505333524] [2021-03-11 14:41:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:31,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:31,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:31,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:31,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:31,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:31,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:31,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:31,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:31,610 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:31,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:31,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:31,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:31,739 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:31,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:31,810 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:31,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:31,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505333524] [2021-03-11 14:41:31,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:31,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:31,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29260095] [2021-03-11 14:41:31,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:31,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:31,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:31,876 INFO L87 Difference]: Start difference. First operand 389 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:32,110 INFO L93 Difference]: Finished difference Result 638 states and 1878 transitions. [2021-03-11 14:41:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:32,114 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:41:32,114 INFO L226 Difference]: Without dead ends: 624 [2021-03-11 14:41:32,114 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 421.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:32,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-03-11 14:41:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 387. [2021-03-11 14:41:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4248704663212437) internal successors, (1322), 386 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1322 transitions. [2021-03-11 14:41:32,120 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1322 transitions. Word has length 22 [2021-03-11 14:41:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:32,121 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1322 transitions. [2021-03-11 14:41:32,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1322 transitions. [2021-03-11 14:41:32,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:32,121 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:32,121 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:32,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1315 [2021-03-11 14:41:32,121 INFO L428 AbstractCegarLoop]: === Iteration 1317 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:32,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:32,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1843535731, now seen corresponding path program 1311 times [2021-03-11 14:41:32,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:32,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055555843] [2021-03-11 14:41:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:32,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:32,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:32,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:32,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:32,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:32,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:32,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:32,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:32,318 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:32,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:32,366 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:32,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:32,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055555843] [2021-03-11 14:41:32,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:32,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:32,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531317260] [2021-03-11 14:41:32,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:32,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:32,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:32,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:32,413 INFO L87 Difference]: Start difference. First operand 387 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:32,654 INFO L93 Difference]: Finished difference Result 638 states and 1876 transitions. [2021-03-11 14:41:32,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:32,657 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:32,658 INFO L225 Difference]: With dead ends: 638 [2021-03-11 14:41:32,659 INFO L226 Difference]: Without dead ends: 628 [2021-03-11 14:41:32,659 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 371.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-03-11 14:41:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 390. [2021-03-11 14:41:32,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.411311053984576) internal successors, (1327), 389 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1327 transitions. [2021-03-11 14:41:32,665 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1327 transitions. Word has length 22 [2021-03-11 14:41:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:32,665 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1327 transitions. [2021-03-11 14:41:32,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:32,665 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1327 transitions. [2021-03-11 14:41:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:32,666 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:32,666 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:32,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1316 [2021-03-11 14:41:32,666 INFO L428 AbstractCegarLoop]: === Iteration 1318 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:32,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:32,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1135274261, now seen corresponding path program 1312 times [2021-03-11 14:41:32,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:32,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427363557] [2021-03-11 14:41:32,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:32,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:32,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:32,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:32,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:32,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:32,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:32,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:32,815 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:32,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:32,910 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:32,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:32,982 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:32,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:33,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427363557] [2021-03-11 14:41:33,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:33,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:33,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413756330] [2021-03-11 14:41:33,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:33,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:33,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:33,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:33,046 INFO L87 Difference]: Start difference. First operand 390 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:33,232 INFO L93 Difference]: Finished difference Result 644 states and 1885 transitions. [2021-03-11 14:41:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:33,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:33,236 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:41:33,236 INFO L226 Difference]: Without dead ends: 625 [2021-03-11 14:41:33,236 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 412.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:33,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2021-03-11 14:41:33,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 387. [2021-03-11 14:41:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.417098445595855) internal successors, (1319), 386 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1319 transitions. [2021-03-11 14:41:33,242 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1319 transitions. Word has length 22 [2021-03-11 14:41:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:33,242 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1319 transitions. [2021-03-11 14:41:33,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,242 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1319 transitions. [2021-03-11 14:41:33,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:33,243 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:33,243 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:33,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1317 [2021-03-11 14:41:33,243 INFO L428 AbstractCegarLoop]: === Iteration 1319 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 594576883, now seen corresponding path program 1313 times [2021-03-11 14:41:33,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:33,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788397909] [2021-03-11 14:41:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:33,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:33,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:33,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:33,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:33,322 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:33,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:33,392 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:33,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:33,485 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:33,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:33,552 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:33,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:33,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788397909] [2021-03-11 14:41:33,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:33,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:33,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699480392] [2021-03-11 14:41:33,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:33,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:33,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:33,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:33,614 INFO L87 Difference]: Start difference. First operand 387 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:33,829 INFO L93 Difference]: Finished difference Result 644 states and 1887 transitions. [2021-03-11 14:41:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:33,833 INFO L225 Difference]: With dead ends: 644 [2021-03-11 14:41:33,833 INFO L226 Difference]: Without dead ends: 632 [2021-03-11 14:41:33,833 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 447.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-03-11 14:41:33,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 392. [2021-03-11 14:41:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.3964194373401533) internal successors, (1328), 391 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1328 transitions. [2021-03-11 14:41:33,843 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1328 transitions. Word has length 22 [2021-03-11 14:41:33,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:33,843 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1328 transitions. [2021-03-11 14:41:33,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:33,843 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1328 transitions. [2021-03-11 14:41:33,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:33,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:33,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:33,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1318 [2021-03-11 14:41:33,844 INFO L428 AbstractCegarLoop]: === Iteration 1320 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:33,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2083981879, now seen corresponding path program 1314 times [2021-03-11 14:41:33,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:33,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536575309] [2021-03-11 14:41:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:33,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:33,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:33,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:33,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:33,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:33,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:33,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:33,969 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:33,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:34,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:34,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:34,076 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:34,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:34,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536575309] [2021-03-11 14:41:34,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:34,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:34,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949428652] [2021-03-11 14:41:34,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:34,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:34,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:34,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:34,119 INFO L87 Difference]: Start difference. First operand 392 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:34,299 INFO L93 Difference]: Finished difference Result 640 states and 1876 transitions. [2021-03-11 14:41:34,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:34,302 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:34,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:34,303 INFO L225 Difference]: With dead ends: 640 [2021-03-11 14:41:34,303 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:41:34,304 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 304.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:34,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:41:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 384. [2021-03-11 14:41:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.422976501305483) internal successors, (1311), 383 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1311 transitions. [2021-03-11 14:41:34,310 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1311 transitions. Word has length 22 [2021-03-11 14:41:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:34,310 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1311 transitions. [2021-03-11 14:41:34,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,310 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1311 transitions. [2021-03-11 14:41:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:34,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:34,310 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:34,310 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319 [2021-03-11 14:41:34,310 INFO L428 AbstractCegarLoop]: === Iteration 1321 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:34,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:34,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1234944933, now seen corresponding path program 1315 times [2021-03-11 14:41:34,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:34,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849623011] [2021-03-11 14:41:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:34,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:34,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:34,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:34,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:34,390 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:34,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:34,433 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:34,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:34,490 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:34,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:34,560 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:34,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:34,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:34,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849623011] [2021-03-11 14:41:34,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:34,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:34,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830107202] [2021-03-11 14:41:34,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:34,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:34,625 INFO L87 Difference]: Start difference. First operand 384 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,852 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:34,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:34,875 INFO L93 Difference]: Finished difference Result 660 states and 1932 transitions. [2021-03-11 14:41:34,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:34,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:34,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:34,879 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:41:34,879 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:41:34,879 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 400.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:41:34,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 394. [2021-03-11 14:41:34,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.404580152671756) internal successors, (1338), 393 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1338 transitions. [2021-03-11 14:41:34,885 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1338 transitions. Word has length 22 [2021-03-11 14:41:34,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:34,885 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1338 transitions. [2021-03-11 14:41:34,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:34,885 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1338 transitions. [2021-03-11 14:41:34,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:34,886 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:34,886 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:34,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1320 [2021-03-11 14:41:34,886 INFO L428 AbstractCegarLoop]: === Iteration 1322 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:34,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:34,886 INFO L82 PathProgramCache]: Analyzing trace with hash 390891609, now seen corresponding path program 1316 times [2021-03-11 14:41:34,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:34,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304119215] [2021-03-11 14:41:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:34,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:34,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:34,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:34,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:34,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:34,965 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:34,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:35,010 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:35,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:35,065 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:35,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:35,131 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:35,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:35,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304119215] [2021-03-11 14:41:35,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:35,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:35,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942910876] [2021-03-11 14:41:35,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:35,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:35,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:35,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:35,196 INFO L87 Difference]: Start difference. First operand 394 states and 1338 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:35,434 INFO L93 Difference]: Finished difference Result 658 states and 1924 transitions. [2021-03-11 14:41:35,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:35,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:35,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:35,438 INFO L225 Difference]: With dead ends: 658 [2021-03-11 14:41:35,438 INFO L226 Difference]: Without dead ends: 642 [2021-03-11 14:41:35,438 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 384.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:35,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-03-11 14:41:35,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 390. [2021-03-11 14:41:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.411311053984576) internal successors, (1327), 389 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1327 transitions. [2021-03-11 14:41:35,445 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1327 transitions. Word has length 22 [2021-03-11 14:41:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:35,445 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1327 transitions. [2021-03-11 14:41:35,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1327 transitions. [2021-03-11 14:41:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:35,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:35,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:35,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1321 [2021-03-11 14:41:35,445 INFO L428 AbstractCegarLoop]: === Iteration 1323 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:35,446 INFO L82 PathProgramCache]: Analyzing trace with hash 161859553, now seen corresponding path program 1317 times [2021-03-11 14:41:35,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:35,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744956448] [2021-03-11 14:41:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:35,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:35,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:35,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:35,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:35,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:35,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:35,569 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:35,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:35,625 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:35,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:35,692 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:35,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:35,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744956448] [2021-03-11 14:41:35,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:35,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:35,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632147094] [2021-03-11 14:41:35,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:35,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:35,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:35,738 INFO L87 Difference]: Start difference. First operand 390 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:35,892 INFO L93 Difference]: Finished difference Result 660 states and 1924 transitions. [2021-03-11 14:41:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:35,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:35,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:35,896 INFO L225 Difference]: With dead ends: 660 [2021-03-11 14:41:35,896 INFO L226 Difference]: Without dead ends: 646 [2021-03-11 14:41:35,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 337.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-03-11 14:41:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 398. [2021-03-11 14:41:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.3778337531486144) internal successors, (1341), 397 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1341 transitions. [2021-03-11 14:41:35,902 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1341 transitions. Word has length 22 [2021-03-11 14:41:35,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:35,902 INFO L480 AbstractCegarLoop]: Abstraction has 398 states and 1341 transitions. [2021-03-11 14:41:35,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1341 transitions. [2021-03-11 14:41:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:35,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:35,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:35,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1322 [2021-03-11 14:41:35,903 INFO L428 AbstractCegarLoop]: === Iteration 1324 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:35,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:35,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1777142763, now seen corresponding path program 1318 times [2021-03-11 14:41:35,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:35,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434447956] [2021-03-11 14:41:35,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:35,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:35,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:35,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:35,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:35,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:35,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:35,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:36,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:36,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:36,081 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:36,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:36,150 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:36,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:36,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434447956] [2021-03-11 14:41:36,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:36,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:36,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032403797] [2021-03-11 14:41:36,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:36,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:36,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:36,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:36,216 INFO L87 Difference]: Start difference. First operand 398 states and 1341 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:36,396 INFO L93 Difference]: Finished difference Result 662 states and 1921 transitions. [2021-03-11 14:41:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:36,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:36,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:36,400 INFO L225 Difference]: With dead ends: 662 [2021-03-11 14:41:36,400 INFO L226 Difference]: Without dead ends: 638 [2021-03-11 14:41:36,400 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 344.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-03-11 14:41:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 390. [2021-03-11 14:41:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.3958868894601544) internal successors, (1321), 389 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:36,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1321 transitions. [2021-03-11 14:41:36,406 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1321 transitions. Word has length 22 [2021-03-11 14:41:36,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:36,407 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1321 transitions. [2021-03-11 14:41:36,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:36,407 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1321 transitions. [2021-03-11 14:41:36,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:36,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:36,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:36,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1323 [2021-03-11 14:41:36,407 INFO L428 AbstractCegarLoop]: === Iteration 1325 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 411361957, now seen corresponding path program 1319 times [2021-03-11 14:41:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:36,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374658082] [2021-03-11 14:41:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:36,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:36,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:36,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:36,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:36,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:36,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:36,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:36,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:36,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:36,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:36,531 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:36,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:36,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:36,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:36,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:36,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:36,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374658082] [2021-03-11 14:41:36,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:36,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:36,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68137701] [2021-03-11 14:41:36,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:36,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:36,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:36,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:36,755 INFO L87 Difference]: Start difference. First operand 390 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:36,992 INFO L93 Difference]: Finished difference Result 653 states and 1903 transitions. [2021-03-11 14:41:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:36,996 INFO L225 Difference]: With dead ends: 653 [2021-03-11 14:41:36,996 INFO L226 Difference]: Without dead ends: 641 [2021-03-11 14:41:36,996 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 425.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-03-11 14:41:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 395. [2021-03-11 14:41:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.3756345177664975) internal successors, (1330), 394 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1330 transitions. [2021-03-11 14:41:37,002 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1330 transitions. Word has length 22 [2021-03-11 14:41:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:37,002 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1330 transitions. [2021-03-11 14:41:37,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1330 transitions. [2021-03-11 14:41:37,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:37,003 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:37,003 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:37,003 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1324 [2021-03-11 14:41:37,003 INFO L428 AbstractCegarLoop]: === Iteration 1326 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:37,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2121975265, now seen corresponding path program 1320 times [2021-03-11 14:41:37,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:37,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586968423] [2021-03-11 14:41:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:37,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:37,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:37,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:37,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:37,082 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:37,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:37,126 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:37,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:37,217 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:37,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:37,287 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:37,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:37,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586968423] [2021-03-11 14:41:37,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:37,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:37,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803382341] [2021-03-11 14:41:37,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:37,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:37,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:37,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:37,351 INFO L87 Difference]: Start difference. First operand 395 states and 1330 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:37,555 INFO L93 Difference]: Finished difference Result 649 states and 1892 transitions. [2021-03-11 14:41:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:37,556 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:37,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:37,557 INFO L225 Difference]: With dead ends: 649 [2021-03-11 14:41:37,557 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:41:37,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 365.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:37,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:41:37,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 376. [2021-03-11 14:41:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4506666666666668) internal successors, (1294), 375 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1294 transitions. [2021-03-11 14:41:37,564 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1294 transitions. Word has length 22 [2021-03-11 14:41:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:37,564 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1294 transitions. [2021-03-11 14:41:37,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1294 transitions. [2021-03-11 14:41:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:37,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:37,564 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:37,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1325 [2021-03-11 14:41:37,564 INFO L428 AbstractCegarLoop]: === Iteration 1327 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1774426515, now seen corresponding path program 1321 times [2021-03-11 14:41:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289534842] [2021-03-11 14:41:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:37,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:37,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:37,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:37,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:37,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:37,621 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:37,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:37,673 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:37,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:37,725 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:37,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:37,797 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:37,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:37,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289534842] [2021-03-11 14:41:37,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:37,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:37,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517375873] [2021-03-11 14:41:37,859 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:37,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:37,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:37,859 INFO L87 Difference]: Start difference. First operand 376 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:38,035 INFO L93 Difference]: Finished difference Result 569 states and 1693 transitions. [2021-03-11 14:41:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:38,038 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:38,039 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:41:38,039 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:41:38,039 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 329.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:41:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 382. [2021-03-11 14:41:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.454068241469816) internal successors, (1316), 381 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1316 transitions. [2021-03-11 14:41:38,046 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1316 transitions. Word has length 22 [2021-03-11 14:41:38,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:38,046 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1316 transitions. [2021-03-11 14:41:38,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,046 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1316 transitions. [2021-03-11 14:41:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:38,047 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:38,047 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:38,047 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1326 [2021-03-11 14:41:38,047 INFO L428 AbstractCegarLoop]: === Iteration 1328 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:38,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash -909599823, now seen corresponding path program 1322 times [2021-03-11 14:41:38,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:38,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739243221] [2021-03-11 14:41:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:38,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:38,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:38,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:38,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:38,132 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:38,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:38,208 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:38,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:38,267 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:38,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:38,338 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:38,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:38,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739243221] [2021-03-11 14:41:38,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:38,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:38,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690465446] [2021-03-11 14:41:38,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:38,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:38,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:38,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:38,404 INFO L87 Difference]: Start difference. First operand 382 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:38,621 INFO L93 Difference]: Finished difference Result 570 states and 1694 transitions. [2021-03-11 14:41:38,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:38,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:38,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:38,625 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:41:38,625 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:41:38,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 432.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:38,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:41:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 381. [2021-03-11 14:41:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.457894736842105) internal successors, (1314), 380 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1314 transitions. [2021-03-11 14:41:38,631 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1314 transitions. Word has length 22 [2021-03-11 14:41:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:38,631 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1314 transitions. [2021-03-11 14:41:38,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1314 transitions. [2021-03-11 14:41:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:38,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:38,632 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:38,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1327 [2021-03-11 14:41:38,632 INFO L428 AbstractCegarLoop]: === Iteration 1329 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:38,632 INFO L82 PathProgramCache]: Analyzing trace with hash 173988661, now seen corresponding path program 1323 times [2021-03-11 14:41:38,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:38,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943379949] [2021-03-11 14:41:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:38,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:38,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:38,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:38,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:38,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:38,711 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:38,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:38,784 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:38,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:38,863 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:38,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:38,933 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:38,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:38,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943379949] [2021-03-11 14:41:38,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:38,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:38,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073883628] [2021-03-11 14:41:38,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:38,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:38,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:38,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:38,998 INFO L87 Difference]: Start difference. First operand 381 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:39,170 INFO L93 Difference]: Finished difference Result 573 states and 1700 transitions. [2021-03-11 14:41:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:39,172 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:39,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:39,173 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:41:39,173 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:41:39,173 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 397.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:41:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 382. [2021-03-11 14:41:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:41:39,179 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:41:39,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:39,179 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:41:39,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,179 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:41:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:39,179 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:39,179 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:39,179 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1328 [2021-03-11 14:41:39,180 INFO L428 AbstractCegarLoop]: === Iteration 1330 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:39,180 INFO L82 PathProgramCache]: Analyzing trace with hash -899096719, now seen corresponding path program 1324 times [2021-03-11 14:41:39,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:39,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887498877] [2021-03-11 14:41:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:39,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:39,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:39,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:39,234 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:39,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:39,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:39,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:39,339 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:39,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:39,394 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:39,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:39,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887498877] [2021-03-11 14:41:39,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:39,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:39,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643489048] [2021-03-11 14:41:39,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:39,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:39,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:39,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:39,467 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:39,686 INFO L93 Difference]: Finished difference Result 578 states and 1709 transitions. [2021-03-11 14:41:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:39,689 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:39,690 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:41:39,690 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:41:39,691 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 364.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:39,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:41:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 381. [2021-03-11 14:41:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.455263157894737) internal successors, (1313), 380 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1313 transitions. [2021-03-11 14:41:39,696 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1313 transitions. Word has length 22 [2021-03-11 14:41:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:39,697 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1313 transitions. [2021-03-11 14:41:39,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1313 transitions. [2021-03-11 14:41:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:39,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:39,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:39,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1329 [2021-03-11 14:41:39,697 INFO L428 AbstractCegarLoop]: === Iteration 1331 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:39,697 INFO L82 PathProgramCache]: Analyzing trace with hash 184491765, now seen corresponding path program 1325 times [2021-03-11 14:41:39,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:39,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91890748] [2021-03-11 14:41:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:39,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:39,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:39,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:39,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:39,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:39,777 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:39,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:39,854 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:39,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:39,946 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:39,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:40,018 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:40,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:40,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:40,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91890748] [2021-03-11 14:41:40,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:40,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:40,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429270276] [2021-03-11 14:41:40,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:40,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:40,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:40,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:40,083 INFO L87 Difference]: Start difference. First operand 381 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:40,307 INFO L93 Difference]: Finished difference Result 576 states and 1706 transitions. [2021-03-11 14:41:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:40,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:40,311 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:41:40,311 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:41:40,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 465.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:41:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 383. [2021-03-11 14:41:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.445026178010471) internal successors, (1316), 382 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1316 transitions. [2021-03-11 14:41:40,317 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1316 transitions. Word has length 22 [2021-03-11 14:41:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:40,317 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1316 transitions. [2021-03-11 14:41:40,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1316 transitions. [2021-03-11 14:41:40,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:40,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:40,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:40,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1330 [2021-03-11 14:41:40,318 INFO L428 AbstractCegarLoop]: === Iteration 1332 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:40,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1795432723, now seen corresponding path program 1326 times [2021-03-11 14:41:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442201781] [2021-03-11 14:41:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:40,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:40,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:40,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:40,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:40,400 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:40,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:40,476 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:40,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:40,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:40,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:40,645 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:40,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:40,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442201781] [2021-03-11 14:41:40,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:40,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356465877] [2021-03-11 14:41:40,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:40,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:40,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:40,711 INFO L87 Difference]: Start difference. First operand 383 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,902 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:40,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:40,933 INFO L93 Difference]: Finished difference Result 580 states and 1712 transitions. [2021-03-11 14:41:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:40,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:40,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:40,937 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:41:40,937 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:41:40,937 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 474.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:41:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 380. [2021-03-11 14:41:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.45910290237467) internal successors, (1311), 379 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1311 transitions. [2021-03-11 14:41:40,943 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1311 transitions. Word has length 22 [2021-03-11 14:41:40,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:40,943 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1311 transitions. [2021-03-11 14:41:40,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:40,943 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1311 transitions. [2021-03-11 14:41:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:40,944 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:40,944 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:40,944 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1331 [2021-03-11 14:41:40,944 INFO L428 AbstractCegarLoop]: === Iteration 1333 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1177089857, now seen corresponding path program 1327 times [2021-03-11 14:41:40,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:40,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806487851] [2021-03-11 14:41:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:40,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:40,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:40,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:40,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:40,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:41,030 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:41,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:41,077 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:41,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:41,126 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:41,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:41,176 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:41,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:41,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806487851] [2021-03-11 14:41:41,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:41,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:41,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546456406] [2021-03-11 14:41:41,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:41,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:41,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:41,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:41,221 INFO L87 Difference]: Start difference. First operand 380 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:41,359 INFO L93 Difference]: Finished difference Result 567 states and 1688 transitions. [2021-03-11 14:41:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:41,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:41,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:41,364 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:41:41,364 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:41:41,364 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 302.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:41:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 382. [2021-03-11 14:41:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:41:41,370 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:41:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:41,370 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:41:41,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:41:41,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:41,371 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:41,371 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:41,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1332 [2021-03-11 14:41:41,371 INFO L428 AbstractCegarLoop]: === Iteration 1334 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1506936481, now seen corresponding path program 1328 times [2021-03-11 14:41:41,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:41,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973062492] [2021-03-11 14:41:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:41,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:41,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:41,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:41,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:41,448 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:41,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:41,493 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:41,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:41,556 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:41,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:41,631 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:41,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:41,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973062492] [2021-03-11 14:41:41,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:41,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:41,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627836591] [2021-03-11 14:41:41,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:41,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:41,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:41,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:41,699 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,938 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:41,964 INFO L93 Difference]: Finished difference Result 568 states and 1689 transitions. [2021-03-11 14:41:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:41,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:41,969 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:41:41,969 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:41:41,969 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 413.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:41,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:41:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 381. [2021-03-11 14:41:41,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.455263157894737) internal successors, (1313), 380 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1313 transitions. [2021-03-11 14:41:41,975 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1313 transitions. Word has length 22 [2021-03-11 14:41:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:41,975 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1313 transitions. [2021-03-11 14:41:41,975 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1313 transitions. [2021-03-11 14:41:41,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:41,976 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:41,976 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:41,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1333 [2021-03-11 14:41:41,976 INFO L428 AbstractCegarLoop]: === Iteration 1335 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:41,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2105184907, now seen corresponding path program 1329 times [2021-03-11 14:41:41,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:41,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804447931] [2021-03-11 14:41:41,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:41,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:41,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:41,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:42,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:42,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:42,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:42,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:42,110 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:42,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:42,204 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:42,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:42,280 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:42,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:42,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804447931] [2021-03-11 14:41:42,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:42,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:42,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069408621] [2021-03-11 14:41:42,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:42,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:42,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:42,350 INFO L87 Difference]: Start difference. First operand 381 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:42,527 INFO L93 Difference]: Finished difference Result 569 states and 1691 transitions. [2021-03-11 14:41:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:42,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:42,530 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:41:42,530 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:41:42,530 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 393.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:41:42,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 382. [2021-03-11 14:41:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:41:42,537 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:41:42,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:42,537 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:41:42,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:41:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:42,537 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:42,537 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:42,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1334 [2021-03-11 14:41:42,537 INFO L428 AbstractCegarLoop]: === Iteration 1336 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1569955105, now seen corresponding path program 1330 times [2021-03-11 14:41:42,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:42,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994427117] [2021-03-11 14:41:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:42,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:42,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:42,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:42,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:42,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:42,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:42,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:42,622 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:42,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:42,688 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:42,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:42,759 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:42,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:42,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994427117] [2021-03-11 14:41:42,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:42,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:42,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942198984] [2021-03-11 14:41:42,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:42,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:42,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:42,823 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:43,080 INFO L93 Difference]: Finished difference Result 572 states and 1696 transitions. [2021-03-11 14:41:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:43,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:43,085 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:41:43,085 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:41:43,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:41:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 381. [2021-03-11 14:41:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:41:43,091 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:41:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:43,091 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:41:43,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:41:43,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:43,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:43,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:43,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1335 [2021-03-11 14:41:43,092 INFO L428 AbstractCegarLoop]: === Iteration 1337 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2094681803, now seen corresponding path program 1331 times [2021-03-11 14:41:43,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:43,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618040639] [2021-03-11 14:41:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:43,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:43,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:43,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:43,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:43,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:43,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:43,232 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:43,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:43,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:43,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:43,369 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:43,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:43,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:43,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618040639] [2021-03-11 14:41:43,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:43,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:43,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078125326] [2021-03-11 14:41:43,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:43,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:43,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:43,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:43,438 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:43,666 INFO L93 Difference]: Finished difference Result 572 states and 1697 transitions. [2021-03-11 14:41:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:43,670 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:41:43,670 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:41:43,670 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 424.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:41:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 383. [2021-03-11 14:41:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4424083769633507) internal successors, (1315), 382 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1315 transitions. [2021-03-11 14:41:43,676 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1315 transitions. Word has length 22 [2021-03-11 14:41:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:43,676 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1315 transitions. [2021-03-11 14:41:43,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1315 transitions. [2021-03-11 14:41:43,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:43,677 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:43,677 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:43,677 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1336 [2021-03-11 14:41:43,677 INFO L428 AbstractCegarLoop]: === Iteration 1338 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:43,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1124574337, now seen corresponding path program 1332 times [2021-03-11 14:41:43,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:43,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295208124] [2021-03-11 14:41:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:43,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:43,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:43,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:43,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:43,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:43,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:43,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:43,802 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:43,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:43,854 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:43,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:43,921 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:43,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:43,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295208124] [2021-03-11 14:41:43,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:43,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:43,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317684895] [2021-03-11 14:41:43,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:43,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:43,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:43,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:43,987 INFO L87 Difference]: Start difference. First operand 383 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:44,152 INFO L93 Difference]: Finished difference Result 574 states and 1699 transitions. [2021-03-11 14:41:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:44,155 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:41:44,155 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:41:44,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 354.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:41:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 380. [2021-03-11 14:41:44,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4564643799472297) internal successors, (1310), 379 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1310 transitions. [2021-03-11 14:41:44,161 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1310 transitions. Word has length 22 [2021-03-11 14:41:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:44,161 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1310 transitions. [2021-03-11 14:41:44,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,161 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1310 transitions. [2021-03-11 14:41:44,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:44,161 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:44,161 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:44,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1337 [2021-03-11 14:41:44,162 INFO L428 AbstractCegarLoop]: === Iteration 1339 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:44,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:44,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1502686081, now seen corresponding path program 1333 times [2021-03-11 14:41:44,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:44,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598425998] [2021-03-11 14:41:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:44,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:44,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:44,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:44,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:44,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:44,216 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:44,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:44,284 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:44,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:44,369 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:44,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:44,441 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:44,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:44,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:44,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598425998] [2021-03-11 14:41:44,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:44,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:44,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020724443] [2021-03-11 14:41:44,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:44,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:44,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:44,508 INFO L87 Difference]: Start difference. First operand 380 states and 1310 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:44,707 INFO L93 Difference]: Finished difference Result 577 states and 1709 transitions. [2021-03-11 14:41:44,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:44,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:44,712 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:41:44,712 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:41:44,712 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 385.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:41:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 382. [2021-03-11 14:41:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:41:44,718 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:41:44,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:44,718 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:41:44,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:44,718 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:41:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:44,718 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:44,718 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:44,718 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1338 [2021-03-11 14:41:44,719 INFO L428 AbstractCegarLoop]: === Iteration 1340 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:44,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:44,719 INFO L82 PathProgramCache]: Analyzing trace with hash 429600701, now seen corresponding path program 1334 times [2021-03-11 14:41:44,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:44,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204642044] [2021-03-11 14:41:44,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:44,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:44,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:44,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:44,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:44,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:44,804 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:44,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:44,877 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:44,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:44,958 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:44,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:45,034 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:45,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:45,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204642044] [2021-03-11 14:41:45,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:45,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:45,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2822555] [2021-03-11 14:41:45,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:45,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:45,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:45,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:45,102 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:45,331 INFO L93 Difference]: Finished difference Result 582 states and 1718 transitions. [2021-03-11 14:41:45,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:45,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:45,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:45,335 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:41:45,335 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:41:45,335 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 463.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:41:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 381. [2021-03-11 14:41:45,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4526315789473685) internal successors, (1312), 380 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1312 transitions. [2021-03-11 14:41:45,346 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1312 transitions. Word has length 22 [2021-03-11 14:41:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:45,346 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1312 transitions. [2021-03-11 14:41:45,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1312 transitions. [2021-03-11 14:41:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:45,346 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:45,346 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:45,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1339 [2021-03-11 14:41:45,346 INFO L428 AbstractCegarLoop]: === Iteration 1341 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:45,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:45,347 INFO L82 PathProgramCache]: Analyzing trace with hash -179150829, now seen corresponding path program 1335 times [2021-03-11 14:41:45,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:45,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762167357] [2021-03-11 14:41:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:45,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:45,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:45,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:45,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:45,425 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:45,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:45,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:45,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:45,568 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:45,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:45,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:45,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:45,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762167357] [2021-03-11 14:41:45,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:45,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:45,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171678309] [2021-03-11 14:41:45,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:45,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:45,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:45,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:45,661 INFO L87 Difference]: Start difference. First operand 381 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:45,798 INFO L93 Difference]: Finished difference Result 575 states and 1704 transitions. [2021-03-11 14:41:45,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:45,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:45,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:45,803 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:41:45,803 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:41:45,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:45,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:41:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 382. [2021-03-11 14:41:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4461942257217846) internal successors, (1313), 381 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1313 transitions. [2021-03-11 14:41:45,809 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1313 transitions. Word has length 22 [2021-03-11 14:41:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:45,809 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1313 transitions. [2021-03-11 14:41:45,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1313 transitions. [2021-03-11 14:41:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:45,809 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:45,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:45,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1340 [2021-03-11 14:41:45,809 INFO L428 AbstractCegarLoop]: === Iteration 1342 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:45,810 INFO L82 PathProgramCache]: Analyzing trace with hash 356078973, now seen corresponding path program 1336 times [2021-03-11 14:41:45,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:45,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241305201] [2021-03-11 14:41:45,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:45,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:45,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:45,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:45,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:45,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:45,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:45,965 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:45,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:46,061 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:46,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:46,131 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:46,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:46,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241305201] [2021-03-11 14:41:46,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:46,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:46,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097859569] [2021-03-11 14:41:46,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:46,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:46,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:46,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:46,206 INFO L87 Difference]: Start difference. First operand 382 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:46,422 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:41:46,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:46,458 INFO L93 Difference]: Finished difference Result 578 states and 1709 transitions. [2021-03-11 14:41:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:46,462 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:41:46,462 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:41:46,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 469.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:41:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 381. [2021-03-11 14:41:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.45) internal successors, (1311), 380 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1311 transitions. [2021-03-11 14:41:46,468 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1311 transitions. Word has length 22 [2021-03-11 14:41:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:46,468 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1311 transitions. [2021-03-11 14:41:46,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1311 transitions. [2021-03-11 14:41:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:46,469 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:46,469 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:46,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1341 [2021-03-11 14:41:46,469 INFO L428 AbstractCegarLoop]: === Iteration 1343 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash -158144621, now seen corresponding path program 1337 times [2021-03-11 14:41:46,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:46,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422289018] [2021-03-11 14:41:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:46,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:46,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:46,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:46,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:46,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:46,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:46,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:46,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:46,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:46,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:46,624 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:46,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:46,682 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:46,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:46,754 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:46,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:46,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422289018] [2021-03-11 14:41:46,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:46,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:46,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215810386] [2021-03-11 14:41:46,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:46,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:46,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:46,821 INFO L87 Difference]: Start difference. First operand 381 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,050 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:47,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:47,075 INFO L93 Difference]: Finished difference Result 588 states and 1732 transitions. [2021-03-11 14:41:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:47,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:47,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:47,079 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:41:47,079 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:41:47,079 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 434.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:41:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 385. [2021-03-11 14:41:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4322916666666665) internal successors, (1318), 384 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1318 transitions. [2021-03-11 14:41:47,085 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1318 transitions. Word has length 22 [2021-03-11 14:41:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:47,085 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1318 transitions. [2021-03-11 14:41:47,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,085 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1318 transitions. [2021-03-11 14:41:47,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:47,085 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:47,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:47,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1342 [2021-03-11 14:41:47,086 INFO L428 AbstractCegarLoop]: === Iteration 1344 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:47,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:47,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1450170561, now seen corresponding path program 1338 times [2021-03-11 14:41:47,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:47,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853328349] [2021-03-11 14:41:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:47,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:47,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:47,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:47,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:47,150 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:41:47,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:41:47,198 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:47,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:47,235 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:47,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:47,285 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:47,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:47,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853328349] [2021-03-11 14:41:47,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:47,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:47,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635330749] [2021-03-11 14:41:47,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:47,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:47,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:47,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:47,357 INFO L87 Difference]: Start difference. First operand 385 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,572 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:41:47,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:47,606 INFO L93 Difference]: Finished difference Result 586 states and 1724 transitions. [2021-03-11 14:41:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:47,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:47,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:47,610 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:41:47,610 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:41:47,610 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 356.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:41:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 380. [2021-03-11 14:41:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.453825857519789) internal successors, (1309), 379 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1309 transitions. [2021-03-11 14:41:47,616 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1309 transitions. Word has length 22 [2021-03-11 14:41:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:47,616 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1309 transitions. [2021-03-11 14:41:47,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1309 transitions. [2021-03-11 14:41:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:47,617 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:47,617 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:47,617 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1343 [2021-03-11 14:41:47,617 INFO L428 AbstractCegarLoop]: === Iteration 1345 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:47,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:47,617 INFO L82 PathProgramCache]: Analyzing trace with hash -855744033, now seen corresponding path program 1339 times [2021-03-11 14:41:47,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:47,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075272910] [2021-03-11 14:41:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:47,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:47,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:47,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:47,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:47,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:47,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:47,744 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:47,842 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:47,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:47,918 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:47,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075272910] [2021-03-11 14:41:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:47,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:47,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118649249] [2021-03-11 14:41:47,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:47,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:47,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:47,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:47,986 INFO L87 Difference]: Start difference. First operand 380 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,178 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:48,202 INFO L93 Difference]: Finished difference Result 584 states and 1727 transitions. [2021-03-11 14:41:48,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:48,206 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:41:48,206 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:41:48,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 449.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:41:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 384. [2021-03-11 14:41:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4438642297650133) internal successors, (1319), 383 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1319 transitions. [2021-03-11 14:41:48,212 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1319 transitions. Word has length 22 [2021-03-11 14:41:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:48,213 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1319 transitions. [2021-03-11 14:41:48,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1319 transitions. [2021-03-11 14:41:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:48,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:48,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:48,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1344 [2021-03-11 14:41:48,213 INFO L428 AbstractCegarLoop]: === Iteration 1346 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:48,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:48,213 INFO L82 PathProgramCache]: Analyzing trace with hash 755196925, now seen corresponding path program 1340 times [2021-03-11 14:41:48,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:48,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324103817] [2021-03-11 14:41:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:48,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:48,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:48,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:48,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:48,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:48,347 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:48,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:48,441 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:48,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:48,514 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:48,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:48,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:48,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324103817] [2021-03-11 14:41:48,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:48,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:48,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746702001] [2021-03-11 14:41:48,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:48,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:48,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:48,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:48,585 INFO L87 Difference]: Start difference. First operand 384 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:48,759 INFO L93 Difference]: Finished difference Result 588 states and 1733 transitions. [2021-03-11 14:41:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:48,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:48,761 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:41:48,761 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:41:48,761 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 414.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:48,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:41:48,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 382. [2021-03-11 14:41:48,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:41:48,768 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:41:48,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:48,768 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:41:48,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:48,768 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:41:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:48,768 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:48,768 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:48,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1345 [2021-03-11 14:41:48,768 INFO L428 AbstractCegarLoop]: === Iteration 1347 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1757386353, now seen corresponding path program 1341 times [2021-03-11 14:41:48,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:48,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120730486] [2021-03-11 14:41:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:48,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:48,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:48,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:48,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:48,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:48,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:48,862 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:48,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:48,918 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:48,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:48,979 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:48,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:49,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120730486] [2021-03-11 14:41:49,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:49,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:49,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43753405] [2021-03-11 14:41:49,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:49,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:49,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:49,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:49,045 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:49,287 INFO L93 Difference]: Finished difference Result 582 states and 1721 transitions. [2021-03-11 14:41:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:49,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:49,291 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:41:49,291 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:41:49,291 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 359.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:41:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 384. [2021-03-11 14:41:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4386422976501305) internal successors, (1317), 383 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1317 transitions. [2021-03-11 14:41:49,297 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1317 transitions. Word has length 22 [2021-03-11 14:41:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:49,297 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1317 transitions. [2021-03-11 14:41:49,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1317 transitions. [2021-03-11 14:41:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:49,298 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:49,298 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:49,298 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1346 [2021-03-11 14:41:49,298 INFO L428 AbstractCegarLoop]: === Iteration 1348 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:49,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:49,298 INFO L82 PathProgramCache]: Analyzing trace with hash 681675197, now seen corresponding path program 1342 times [2021-03-11 14:41:49,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:49,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545371785] [2021-03-11 14:41:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:49,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:49,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:49,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:49,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:49,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:49,425 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:49,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:49,486 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:49,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:49,560 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:49,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:49,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545371785] [2021-03-11 14:41:49,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:49,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:49,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261403323] [2021-03-11 14:41:49,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:49,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:49,629 INFO L87 Difference]: Start difference. First operand 384 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,845 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:41:49,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:49,875 INFO L93 Difference]: Finished difference Result 584 states and 1723 transitions. [2021-03-11 14:41:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:49,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:49,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:49,880 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:41:49,880 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:41:49,880 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 413.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:41:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 382. [2021-03-11 14:41:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4435695538057742) internal successors, (1312), 381 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1312 transitions. [2021-03-11 14:41:49,886 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1312 transitions. Word has length 22 [2021-03-11 14:41:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:49,886 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1312 transitions. [2021-03-11 14:41:49,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1312 transitions. [2021-03-11 14:41:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:49,886 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:49,887 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:49,887 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1347 [2021-03-11 14:41:49,887 INFO L428 AbstractCegarLoop]: === Iteration 1349 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:49,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1767889457, now seen corresponding path program 1343 times [2021-03-11 14:41:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:49,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471816065] [2021-03-11 14:41:49,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:49,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:49,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:49,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:49,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:49,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:49,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:50,015 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:50,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:50,073 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:50,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:50,125 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:50,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:50,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471816065] [2021-03-11 14:41:50,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:50,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:50,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769683228] [2021-03-11 14:41:50,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:50,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:50,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:50,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:50,170 INFO L87 Difference]: Start difference. First operand 382 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:50,355 INFO L93 Difference]: Finished difference Result 592 states and 1741 transitions. [2021-03-11 14:41:50,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:50,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:50,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:50,360 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:41:50,360 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:41:50,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 347.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:50,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:41:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 386. [2021-03-11 14:41:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.425974025974026) internal successors, (1319), 385 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1319 transitions. [2021-03-11 14:41:50,366 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1319 transitions. Word has length 22 [2021-03-11 14:41:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:50,366 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1319 transitions. [2021-03-11 14:41:50,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,366 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1319 transitions. [2021-03-11 14:41:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:50,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:50,367 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:50,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1348 [2021-03-11 14:41:50,367 INFO L428 AbstractCegarLoop]: === Iteration 1350 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:50,367 INFO L82 PathProgramCache]: Analyzing trace with hash -918762657, now seen corresponding path program 1344 times [2021-03-11 14:41:50,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:50,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848154089] [2021-03-11 14:41:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:50,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:50,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:50,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:50,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:41:50,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:41:50,491 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:50,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:50,550 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:50,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:50,622 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:50,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:50,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848154089] [2021-03-11 14:41:50,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:50,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:50,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583334329] [2021-03-11 14:41:50,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:50,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:50,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:50,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:50,689 INFO L87 Difference]: Start difference. First operand 386 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,888 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:41:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:50,924 INFO L93 Difference]: Finished difference Result 590 states and 1733 transitions. [2021-03-11 14:41:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:50,928 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:41:50,928 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:41:50,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 403.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:50,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:41:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 379. [2021-03-11 14:41:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4576719576719577) internal successors, (1307), 378 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1307 transitions. [2021-03-11 14:41:50,934 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1307 transitions. Word has length 22 [2021-03-11 14:41:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:50,935 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1307 transitions. [2021-03-11 14:41:50,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1307 transitions. [2021-03-11 14:41:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:50,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:50,935 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:50,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1349 [2021-03-11 14:41:50,935 INFO L428 AbstractCegarLoop]: === Iteration 1351 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:50,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash 929455063, now seen corresponding path program 1345 times [2021-03-11 14:41:50,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:50,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234245094] [2021-03-11 14:41:50,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:50,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:50,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:50,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:50,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:50,987 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:50,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:51,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:51,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:51,136 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:51,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:51,202 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:51,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:51,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:51,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:51,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234245094] [2021-03-11 14:41:51,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:51,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:51,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119417872] [2021-03-11 14:41:51,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:51,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:51,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:51,342 INFO L87 Difference]: Start difference. First operand 379 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:51,475 INFO L93 Difference]: Finished difference Result 583 states and 1721 transitions. [2021-03-11 14:41:51,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:51,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:51,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:51,478 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:41:51,478 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:41:51,478 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 421.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:41:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 384. [2021-03-11 14:41:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:41:51,484 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:41:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:51,484 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:41:51,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:41:51,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:51,485 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:51,485 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:51,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1350 [2021-03-11 14:41:51,485 INFO L428 AbstractCegarLoop]: === Iteration 1352 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:51,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:51,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1754571275, now seen corresponding path program 1346 times [2021-03-11 14:41:51,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:51,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667962841] [2021-03-11 14:41:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:51,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:51,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:51,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:51,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:51,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:51,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:51,520 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:51,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:51,566 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:51,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:51,654 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:51,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:51,719 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:51,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:51,795 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:51,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:51,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667962841] [2021-03-11 14:41:51,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:51,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:51,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165858887] [2021-03-11 14:41:51,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:51,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:51,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:51,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:51,864 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,109 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:52,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:52,137 INFO L93 Difference]: Finished difference Result 584 states and 1722 transitions. [2021-03-11 14:41:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:52,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:52,142 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:41:52,142 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:41:52,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 472.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:41:52,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 383. [2021-03-11 14:41:52,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4554973821989527) internal successors, (1320), 382 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1320 transitions. [2021-03-11 14:41:52,148 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1320 transitions. Word has length 22 [2021-03-11 14:41:52,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:52,149 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1320 transitions. [2021-03-11 14:41:52,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1320 transitions. [2021-03-11 14:41:52,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:52,149 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:52,149 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:52,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1351 [2021-03-11 14:41:52,149 INFO L428 AbstractCegarLoop]: === Iteration 1353 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:52,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:52,149 INFO L82 PathProgramCache]: Analyzing trace with hash -670982791, now seen corresponding path program 1347 times [2021-03-11 14:41:52,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:52,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822469672] [2021-03-11 14:41:52,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:52,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:52,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:52,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:52,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:52,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:52,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:52,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:52,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:52,343 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:52,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:52,431 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:52,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:52,512 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:52,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:52,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822469672] [2021-03-11 14:41:52,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:52,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:52,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997710576] [2021-03-11 14:41:52,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:52,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:52,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:52,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:52,586 INFO L87 Difference]: Start difference. First operand 383 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:52,797 INFO L93 Difference]: Finished difference Result 587 states and 1728 transitions. [2021-03-11 14:41:52,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:52,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:52,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:52,802 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:41:52,802 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:41:52,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 472.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:41:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 384. [2021-03-11 14:41:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4490861618798956) internal successors, (1321), 383 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1321 transitions. [2021-03-11 14:41:52,808 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1321 transitions. Word has length 22 [2021-03-11 14:41:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:52,808 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1321 transitions. [2021-03-11 14:41:52,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1321 transitions. [2021-03-11 14:41:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:52,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:52,809 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:52,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1352 [2021-03-11 14:41:52,809 INFO L428 AbstractCegarLoop]: === Iteration 1354 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1744068171, now seen corresponding path program 1348 times [2021-03-11 14:41:52,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:52,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521036317] [2021-03-11 14:41:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:52,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:52,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:52,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:52,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:52,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:52,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:52,927 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:52,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:53,011 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:53,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:53,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:53,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:53,172 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:53,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:53,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521036317] [2021-03-11 14:41:53,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:53,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:53,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030655268] [2021-03-11 14:41:53,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:53,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:53,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:53,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:53,243 INFO L87 Difference]: Start difference. First operand 384 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:53,490 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:53,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:53,524 INFO L93 Difference]: Finished difference Result 592 states and 1737 transitions. [2021-03-11 14:41:53,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:53,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:53,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:53,528 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:41:53,528 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:41:53,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 519.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:41:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 383. [2021-03-11 14:41:53,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4528795811518322) internal successors, (1319), 382 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:53,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1319 transitions. [2021-03-11 14:41:53,535 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1319 transitions. Word has length 22 [2021-03-11 14:41:53,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:53,535 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1319 transitions. [2021-03-11 14:41:53,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:53,535 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1319 transitions. [2021-03-11 14:41:53,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:53,535 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:53,535 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:53,535 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1353 [2021-03-11 14:41:53,535 INFO L428 AbstractCegarLoop]: === Iteration 1355 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:53,536 INFO L82 PathProgramCache]: Analyzing trace with hash -660479687, now seen corresponding path program 1349 times [2021-03-11 14:41:53,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:53,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125902375] [2021-03-11 14:41:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:53,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:53,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:53,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:53,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:53,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:53,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:53,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:53,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:53,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:53,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:53,718 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:53,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:53,791 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:53,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:53,843 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:53,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:53,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125902375] [2021-03-11 14:41:53,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:53,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:53,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097640258] [2021-03-11 14:41:53,893 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:53,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:53,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:53,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:53,894 INFO L87 Difference]: Start difference. First operand 383 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,150 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:54,174 INFO L93 Difference]: Finished difference Result 590 states and 1734 transitions. [2021-03-11 14:41:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:54,179 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:41:54,179 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:41:54,179 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 445.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:41:54,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 385. [2021-03-11 14:41:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4427083333333335) internal successors, (1322), 384 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1322 transitions. [2021-03-11 14:41:54,185 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1322 transitions. Word has length 22 [2021-03-11 14:41:54,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:54,185 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1322 transitions. [2021-03-11 14:41:54,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1322 transitions. [2021-03-11 14:41:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:54,186 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:54,186 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:54,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1354 [2021-03-11 14:41:54,186 INFO L428 AbstractCegarLoop]: === Iteration 1356 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash 950461271, now seen corresponding path program 1350 times [2021-03-11 14:41:54,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:54,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865922493] [2021-03-11 14:41:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:54,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:54,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:54,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:54,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:54,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:54,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:41:54,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:41:54,397 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:41:54,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:41:54,500 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:54,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:54,574 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:54,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:54,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865922493] [2021-03-11 14:41:54,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:54,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:54,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914154445] [2021-03-11 14:41:54,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:54,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:54,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:54,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:54,643 INFO L87 Difference]: Start difference. First operand 385 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,860 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:54,891 INFO L93 Difference]: Finished difference Result 594 states and 1740 transitions. [2021-03-11 14:41:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:54,895 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:41:54,895 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:41:54,895 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 536.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:41:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 382. [2021-03-11 14:41:54,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.456692913385827) internal successors, (1317), 381 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1317 transitions. [2021-03-11 14:41:54,901 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1317 transitions. Word has length 22 [2021-03-11 14:41:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:54,901 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1317 transitions. [2021-03-11 14:41:54,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1317 transitions. [2021-03-11 14:41:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:54,901 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:54,901 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:54,901 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1355 [2021-03-11 14:41:54,901 INFO L428 AbstractCegarLoop]: === Iteration 1357 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:54,902 INFO L82 PathProgramCache]: Analyzing trace with hash -110780735, now seen corresponding path program 1351 times [2021-03-11 14:41:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:54,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906833049] [2021-03-11 14:41:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:54,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:54,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:54,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:54,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:54,950 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:54,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:55,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:55,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:55,094 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:55,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:55,158 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:55,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:55,234 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:55,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:55,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906833049] [2021-03-11 14:41:55,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:55,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:55,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4648982] [2021-03-11 14:41:55,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:55,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:55,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:55,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:55,304 INFO L87 Difference]: Start difference. First operand 382 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:55,535 INFO L93 Difference]: Finished difference Result 588 states and 1730 transitions. [2021-03-11 14:41:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:55,540 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:41:55,540 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:41:55,540 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 434.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:41:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 385. [2021-03-11 14:41:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4479166666666665) internal successors, (1324), 384 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1324 transitions. [2021-03-11 14:41:55,546 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1324 transitions. Word has length 22 [2021-03-11 14:41:55,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:55,546 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1324 transitions. [2021-03-11 14:41:55,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:55,546 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1324 transitions. [2021-03-11 14:41:55,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:55,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:55,547 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:55,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1356 [2021-03-11 14:41:55,547 INFO L428 AbstractCegarLoop]: === Iteration 1358 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:55,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1500160223, now seen corresponding path program 1352 times [2021-03-11 14:41:55,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:55,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407939317] [2021-03-11 14:41:55,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:55,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:55,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:55,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:55,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:55,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:55,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:55,597 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:55,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:55,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:55,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:55,743 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:41:55,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:41:55,806 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:55,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:55,882 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:55,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:55,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407939317] [2021-03-11 14:41:55,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:55,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:55,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959175115] [2021-03-11 14:41:55,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:55,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:55,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:55,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:55,951 INFO L87 Difference]: Start difference. First operand 385 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,224 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:56,251 INFO L93 Difference]: Finished difference Result 589 states and 1731 transitions. [2021-03-11 14:41:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:56,256 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:41:56,256 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:41:56,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 488.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:41:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 384. [2021-03-11 14:41:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.451697127937337) internal successors, (1322), 383 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1322 transitions. [2021-03-11 14:41:56,262 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1322 transitions. Word has length 22 [2021-03-11 14:41:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:56,262 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1322 transitions. [2021-03-11 14:41:56,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,262 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1322 transitions. [2021-03-11 14:41:56,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:56,263 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:56,263 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:56,263 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1357 [2021-03-11 14:41:56,263 INFO L428 AbstractCegarLoop]: === Iteration 1359 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1996003385, now seen corresponding path program 1353 times [2021-03-11 14:41:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:56,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466379648] [2021-03-11 14:41:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:56,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:56,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:56,315 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:56,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:56,382 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:56,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:56,468 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:56,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:56,552 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:56,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:56,628 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:56,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466379648] [2021-03-11 14:41:56,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:56,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:56,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544076454] [2021-03-11 14:41:56,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:56,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:56,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:56,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:56,698 INFO L87 Difference]: Start difference. First operand 384 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:56,893 INFO L93 Difference]: Finished difference Result 595 states and 1742 transitions. [2021-03-11 14:41:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:56,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:56,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:56,896 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:41:56,896 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:41:56,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 447.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:41:56,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 386. [2021-03-11 14:41:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4415584415584415) internal successors, (1325), 385 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1325 transitions. [2021-03-11 14:41:56,902 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1325 transitions. Word has length 22 [2021-03-11 14:41:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:56,902 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1325 transitions. [2021-03-11 14:41:56,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:56,902 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1325 transitions. [2021-03-11 14:41:56,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:56,902 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:56,902 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:56,902 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1358 [2021-03-11 14:41:56,902 INFO L428 AbstractCegarLoop]: === Iteration 1360 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:56,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1458147807, now seen corresponding path program 1354 times [2021-03-11 14:41:56,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:56,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184900900] [2021-03-11 14:41:56,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:56,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:56,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:56,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:56,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:56,937 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:56,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:56,979 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:56,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:57,046 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:57,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:57,134 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:57,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:57,209 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:57,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:57,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184900900] [2021-03-11 14:41:57,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:57,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:57,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503767298] [2021-03-11 14:41:57,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:57,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:57,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:57,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:57,280 INFO L87 Difference]: Start difference. First operand 386 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:57,505 INFO L93 Difference]: Finished difference Result 602 states and 1754 transitions. [2021-03-11 14:41:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:57,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:57,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:57,509 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:41:57,509 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:41:57,509 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 415.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:41:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 384. [2021-03-11 14:41:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.446475195822454) internal successors, (1320), 383 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1320 transitions. [2021-03-11 14:41:57,516 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1320 transitions. Word has length 22 [2021-03-11 14:41:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:57,516 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1320 transitions. [2021-03-11 14:41:57,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1320 transitions. [2021-03-11 14:41:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:57,516 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:57,516 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:57,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1359 [2021-03-11 14:41:57,516 INFO L428 AbstractCegarLoop]: === Iteration 1361 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:57,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:57,516 INFO L82 PathProgramCache]: Analyzing trace with hash 2006506489, now seen corresponding path program 1355 times [2021-03-11 14:41:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:57,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159492090] [2021-03-11 14:41:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:57,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:57,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:57,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:57,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:57,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:57,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:57,572 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:57,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:57,636 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:57,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:57,723 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:57,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:57,819 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:57,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:57,899 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:57,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:57,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159492090] [2021-03-11 14:41:57,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:57,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:57,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26666616] [2021-03-11 14:41:57,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:57,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:57,966 INFO L87 Difference]: Start difference. First operand 384 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,205 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:41:58,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:58,228 INFO L93 Difference]: Finished difference Result 598 states and 1747 transitions. [2021-03-11 14:41:58,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:58,232 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:41:58,232 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:41:58,232 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 529.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:41:58,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 387. [2021-03-11 14:41:58,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4326424870466323) internal successors, (1325), 386 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1325 transitions. [2021-03-11 14:41:58,238 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1325 transitions. Word has length 22 [2021-03-11 14:41:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:58,238 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1325 transitions. [2021-03-11 14:41:58,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1325 transitions. [2021-03-11 14:41:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:58,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:58,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:58,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1360 [2021-03-11 14:41:58,239 INFO L428 AbstractCegarLoop]: === Iteration 1362 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:58,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:58,239 INFO L82 PathProgramCache]: Analyzing trace with hash -142290047, now seen corresponding path program 1356 times [2021-03-11 14:41:58,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:58,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740742512] [2021-03-11 14:41:58,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:58,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:58,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:58,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:58,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:58,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:58,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:58,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:58,448 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:58,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:58,559 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:58,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:58,638 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:58,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:58,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740742512] [2021-03-11 14:41:58,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:58,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:58,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996652637] [2021-03-11 14:41:58,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:58,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:58,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:58,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:58,711 INFO L87 Difference]: Start difference. First operand 387 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:58,937 INFO L93 Difference]: Finished difference Result 604 states and 1756 transitions. [2021-03-11 14:41:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:58,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:58,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:58,942 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:41:58,942 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:41:58,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 507.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:41:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 382. [2021-03-11 14:41:58,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4514435695538057) internal successors, (1315), 381 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1315 transitions. [2021-03-11 14:41:58,948 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1315 transitions. Word has length 22 [2021-03-11 14:41:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:58,948 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1315 transitions. [2021-03-11 14:41:58,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1315 transitions. [2021-03-11 14:41:58,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:58,949 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:58,949 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:58,949 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1361 [2021-03-11 14:41:58,949 INFO L428 AbstractCegarLoop]: === Iteration 1363 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash 214815489, now seen corresponding path program 1357 times [2021-03-11 14:41:58,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:58,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71095857] [2021-03-11 14:41:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:58,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:58,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:58,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:58,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:59,002 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:59,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:59,071 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:59,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:59,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:59,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:59,228 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:41:59,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:41:59,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:59,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:41:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:41:59,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71095857] [2021-03-11 14:41:59,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:41:59,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:41:59,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60944264] [2021-03-11 14:41:59,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:41:59,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:41:59,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:41:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:41:59,380 INFO L87 Difference]: Start difference. First operand 382 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:41:59,611 INFO L93 Difference]: Finished difference Result 602 states and 1759 transitions. [2021-03-11 14:41:59,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:41:59,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:41:59,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:41:59,615 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:41:59,615 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:41:59,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 467.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:41:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:41:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 386. [2021-03-11 14:41:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4389610389610388) internal successors, (1324), 385 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1324 transitions. [2021-03-11 14:41:59,622 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1324 transitions. Word has length 22 [2021-03-11 14:41:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:41:59,622 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1324 transitions. [2021-03-11 14:41:59,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:41:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1324 transitions. [2021-03-11 14:41:59,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:41:59,622 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:41:59,622 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:41:59,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1362 [2021-03-11 14:41:59,622 INFO L428 AbstractCegarLoop]: === Iteration 1364 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:41:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:41:59,623 INFO L82 PathProgramCache]: Analyzing trace with hash -858269891, now seen corresponding path program 1358 times [2021-03-11 14:41:59,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:41:59,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312311417] [2021-03-11 14:41:59,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:41:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:41:59,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:59,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:41:59,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:59,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:41:59,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:41:59,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:41:59,676 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:41:59,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:41:59,741 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:41:59,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:41:59,810 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:41:59,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:41:59,896 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:41:59,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:41:59,968 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:41:59,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:00,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312311417] [2021-03-11 14:42:00,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:00,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:00,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785353174] [2021-03-11 14:42:00,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:00,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:00,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:00,038 INFO L87 Difference]: Start difference. First operand 386 states and 1324 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,281 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:00,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:00,308 INFO L93 Difference]: Finished difference Result 607 states and 1768 transitions. [2021-03-11 14:42:00,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:00,310 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:00,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:00,311 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:42:00,311 INFO L226 Difference]: Without dead ends: 592 [2021-03-11 14:42:00,311 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 502.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:00,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-03-11 14:42:00,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 385. [2021-03-11 14:42:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4427083333333335) internal successors, (1322), 384 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1322 transitions. [2021-03-11 14:42:00,318 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:00,318 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1322 transitions. [2021-03-11 14:42:00,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1322 transitions. [2021-03-11 14:42:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:00,318 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:00,318 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:00,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1363 [2021-03-11 14:42:00,318 INFO L428 AbstractCegarLoop]: === Iteration 1365 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:00,318 INFO L82 PathProgramCache]: Analyzing trace with hash -372929833, now seen corresponding path program 1359 times [2021-03-11 14:42:00,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:00,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126566069] [2021-03-11 14:42:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:00,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:00,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:00,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:00,355 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:00,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:00,401 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:00,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:00,449 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:00,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:00,506 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:00,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:00,579 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:00,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:00,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126566069] [2021-03-11 14:42:00,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:00,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:00,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129438526] [2021-03-11 14:42:00,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:00,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:00,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:00,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:00,653 INFO L87 Difference]: Start difference. First operand 385 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:00,855 INFO L93 Difference]: Finished difference Result 605 states and 1763 transitions. [2021-03-11 14:42:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:00,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:00,860 INFO L225 Difference]: With dead ends: 605 [2021-03-11 14:42:00,860 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:42:00,860 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 374.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:00,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:42:00,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 387. [2021-03-11 14:42:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4326424870466323) internal successors, (1325), 386 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1325 transitions. [2021-03-11 14:42:00,866 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1325 transitions. Word has length 22 [2021-03-11 14:42:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:00,866 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1325 transitions. [2021-03-11 14:42:00,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1325 transitions. [2021-03-11 14:42:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:00,866 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:00,867 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:00,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1364 [2021-03-11 14:42:00,867 INFO L428 AbstractCegarLoop]: === Iteration 1366 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:00,867 INFO L82 PathProgramCache]: Analyzing trace with hash -910785411, now seen corresponding path program 1360 times [2021-03-11 14:42:00,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:00,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15768570] [2021-03-11 14:42:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:00,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:00,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:00,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:00,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:00,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:00,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:00,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:00,988 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:00,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:01,062 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:01,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:01,151 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:01,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:01,225 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:01,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:01,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:01,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15768570] [2021-03-11 14:42:01,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:01,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:01,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197508647] [2021-03-11 14:42:01,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:01,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:01,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:01,299 INFO L87 Difference]: Start difference. First operand 387 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:01,514 INFO L93 Difference]: Finished difference Result 612 states and 1775 transitions. [2021-03-11 14:42:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:01,519 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:42:01,519 INFO L226 Difference]: Without dead ends: 594 [2021-03-11 14:42:01,519 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 471.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-03-11 14:42:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 385. [2021-03-11 14:42:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4375) internal successors, (1320), 384 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1320 transitions. [2021-03-11 14:42:01,525 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1320 transitions. Word has length 22 [2021-03-11 14:42:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:01,525 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1320 transitions. [2021-03-11 14:42:01,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1320 transitions. [2021-03-11 14:42:01,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:01,526 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:01,526 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:01,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1365 [2021-03-11 14:42:01,526 INFO L428 AbstractCegarLoop]: === Iteration 1367 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash -351923625, now seen corresponding path program 1361 times [2021-03-11 14:42:01,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:01,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133508583] [2021-03-11 14:42:01,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:01,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:01,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:01,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:01,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:01,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:01,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:01,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:01,643 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:01,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:01,711 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:01,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:01,847 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:01,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:01,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133508583] [2021-03-11 14:42:01,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:01,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:01,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180233956] [2021-03-11 14:42:01,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:01,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:01,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:01,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:01,919 INFO L87 Difference]: Start difference. First operand 385 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,146 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:02,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:02,169 INFO L93 Difference]: Finished difference Result 621 states and 1797 transitions. [2021-03-11 14:42:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:02,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:02,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:02,174 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:42:02,174 INFO L226 Difference]: Without dead ends: 607 [2021-03-11 14:42:02,174 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 482.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:02,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-03-11 14:42:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 393. [2021-03-11 14:42:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4030612244897958) internal successors, (1334), 392 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1334 transitions. [2021-03-11 14:42:02,180 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1334 transitions. Word has length 22 [2021-03-11 14:42:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:02,180 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1334 transitions. [2021-03-11 14:42:02,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1334 transitions. [2021-03-11 14:42:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:02,181 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:02,181 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:02,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1366 [2021-03-11 14:42:02,181 INFO L428 AbstractCegarLoop]: === Iteration 1368 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:02,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:02,181 INFO L82 PathProgramCache]: Analyzing trace with hash 183306177, now seen corresponding path program 1362 times [2021-03-11 14:42:02,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:02,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817305951] [2021-03-11 14:42:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:02,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:02,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:02,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:02,237 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:02,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:02,305 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:02,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:02,377 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:02,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:02,442 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:02,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:02,517 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:02,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817305951] [2021-03-11 14:42:02,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:02,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306851136] [2021-03-11 14:42:02,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:02,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:02,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:02,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:02,590 INFO L87 Difference]: Start difference. First operand 393 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:02,845 INFO L93 Difference]: Finished difference Result 623 states and 1794 transitions. [2021-03-11 14:42:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:02,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:02,849 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:42:02,850 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:42:02,850 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 443.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:42:02,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 382. [2021-03-11 14:42:02,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4435695538057742) internal successors, (1312), 381 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1312 transitions. [2021-03-11 14:42:02,856 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1312 transitions. Word has length 22 [2021-03-11 14:42:02,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:02,856 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1312 transitions. [2021-03-11 14:42:02,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1312 transitions. [2021-03-11 14:42:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:02,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:02,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:02,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1367 [2021-03-11 14:42:02,857 INFO L428 AbstractCegarLoop]: === Iteration 1369 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:02,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2143614625, now seen corresponding path program 1363 times [2021-03-11 14:42:02,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:02,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365631963] [2021-03-11 14:42:02,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:02,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:02,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:02,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:02,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:02,911 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:02,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:02,977 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:02,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:03,063 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:03,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:03,167 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:03,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:03,242 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:03,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365631963] [2021-03-11 14:42:03,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:03,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636043794] [2021-03-11 14:42:03,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:03,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:03,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:03,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:03,311 INFO L87 Difference]: Start difference. First operand 382 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:03,526 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:03,549 INFO L93 Difference]: Finished difference Result 609 states and 1775 transitions. [2021-03-11 14:42:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:03,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:03,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:03,554 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:42:03,554 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:42:03,554 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 538.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:42:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 388. [2021-03-11 14:42:03,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4289405684754524) internal successors, (1327), 387 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1327 transitions. [2021-03-11 14:42:03,560 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1327 transitions. Word has length 22 [2021-03-11 14:42:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:03,560 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1327 transitions. [2021-03-11 14:42:03,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1327 transitions. [2021-03-11 14:42:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:03,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:03,561 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:03,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1368 [2021-03-11 14:42:03,561 INFO L428 AbstractCegarLoop]: === Iteration 1370 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:03,561 INFO L82 PathProgramCache]: Analyzing trace with hash -532673667, now seen corresponding path program 1364 times [2021-03-11 14:42:03,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:03,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072041729] [2021-03-11 14:42:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:03,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:03,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:03,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:03,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:03,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:03,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:03,614 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:03,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:03,685 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:03,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:03,755 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:03,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:03,825 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:03,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:03,877 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:03,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:03,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072041729] [2021-03-11 14:42:03,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:03,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:03,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718305862] [2021-03-11 14:42:03,928 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:03,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:03,928 INFO L87 Difference]: Start difference. First operand 388 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,182 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:04,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:04,211 INFO L93 Difference]: Finished difference Result 613 states and 1781 transitions. [2021-03-11 14:42:04,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:04,214 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:04,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:04,215 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:42:04,215 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:42:04,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 464.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:04,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:42:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 386. [2021-03-11 14:42:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.433766233766234) internal successors, (1322), 385 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1322 transitions. [2021-03-11 14:42:04,222 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:04,222 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1322 transitions. [2021-03-11 14:42:04,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,222 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1322 transitions. [2021-03-11 14:42:04,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:04,222 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:04,222 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:04,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1369 [2021-03-11 14:42:04,223 INFO L428 AbstractCegarLoop]: === Iteration 1371 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:04,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:04,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1563607349, now seen corresponding path program 1365 times [2021-03-11 14:42:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:04,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512570988] [2021-03-11 14:42:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:04,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:04,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:04,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:04,279 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:04,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:04,344 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:04,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:04,432 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:04,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:04,537 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:04,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:04,617 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:04,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:04,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512570988] [2021-03-11 14:42:04,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:04,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:04,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893425753] [2021-03-11 14:42:04,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:04,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:04,675 INFO L87 Difference]: Start difference. First operand 386 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:04,853 INFO L93 Difference]: Finished difference Result 612 states and 1778 transitions. [2021-03-11 14:42:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:04,856 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:04,857 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:42:04,857 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:42:04,857 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 500.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:42:04,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 389. [2021-03-11 14:42:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.420103092783505) internal successors, (1327), 388 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1327 transitions. [2021-03-11 14:42:04,863 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1327 transitions. Word has length 22 [2021-03-11 14:42:04,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:04,863 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1327 transitions. [2021-03-11 14:42:04,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:04,863 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1327 transitions. [2021-03-11 14:42:04,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:04,864 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:04,864 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:04,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1370 [2021-03-11 14:42:04,864 INFO L428 AbstractCegarLoop]: === Iteration 1372 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:04,864 INFO L82 PathProgramCache]: Analyzing trace with hash -585189187, now seen corresponding path program 1366 times [2021-03-11 14:42:04,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:04,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891306709] [2021-03-11 14:42:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:04,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:04,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:04,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:04,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:04,926 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:04,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:05,000 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:05,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:05,085 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:05,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:05,185 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:05,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:05,260 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:05,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:05,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891306709] [2021-03-11 14:42:05,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:05,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:05,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586237565] [2021-03-11 14:42:05,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:05,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:05,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:05,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:05,331 INFO L87 Difference]: Start difference. First operand 389 states and 1327 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:05,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:05,533 INFO L93 Difference]: Finished difference Result 618 states and 1787 transitions. [2021-03-11 14:42:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:05,538 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:42:05,538 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:42:05,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 498.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:42:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 386. [2021-03-11 14:42:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.425974025974026) internal successors, (1319), 385 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1319 transitions. [2021-03-11 14:42:05,544 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1319 transitions. Word has length 22 [2021-03-11 14:42:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:05,544 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1319 transitions. [2021-03-11 14:42:05,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1319 transitions. [2021-03-11 14:42:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:05,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:05,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:05,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1371 [2021-03-11 14:42:05,545 INFO L428 AbstractCegarLoop]: === Iteration 1373 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:05,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1574110453, now seen corresponding path program 1367 times [2021-03-11 14:42:05,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:05,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535054412] [2021-03-11 14:42:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:05,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:05,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:05,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:05,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:05,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:05,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:05,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:05,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:05,664 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:05,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:05,747 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:05,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:05,810 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:05,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:05,886 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:05,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:05,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535054412] [2021-03-11 14:42:05,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:05,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:05,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739049339] [2021-03-11 14:42:05,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:05,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:05,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:05,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:05,959 INFO L87 Difference]: Start difference. First operand 386 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,221 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:06,247 INFO L93 Difference]: Finished difference Result 625 states and 1804 transitions. [2021-03-11 14:42:06,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:06,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:06,251 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:42:06,251 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:42:06,251 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 502.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:42:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 394. [2021-03-11 14:42:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.391857506361323) internal successors, (1333), 393 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1333 transitions. [2021-03-11 14:42:06,258 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1333 transitions. Word has length 22 [2021-03-11 14:42:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:06,258 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1333 transitions. [2021-03-11 14:42:06,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1333 transitions. [2021-03-11 14:42:06,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:06,258 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:06,258 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:06,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1372 [2021-03-11 14:42:06,258 INFO L428 AbstractCegarLoop]: === Iteration 1374 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:06,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:06,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2109340255, now seen corresponding path program 1368 times [2021-03-11 14:42:06,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:06,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997129775] [2021-03-11 14:42:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:06,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:06,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:06,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:06,312 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:06,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:06,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:06,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:06,465 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:06,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:06,529 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:06,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:06,607 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:06,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:06,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997129775] [2021-03-11 14:42:06,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:06,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:06,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572493061] [2021-03-11 14:42:06,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:06,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:06,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:06,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:06,680 INFO L87 Difference]: Start difference. First operand 394 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:06,925 INFO L93 Difference]: Finished difference Result 627 states and 1801 transitions. [2021-03-11 14:42:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:06,935 INFO L225 Difference]: With dead ends: 627 [2021-03-11 14:42:06,935 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:42:06,935 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 456.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:42:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 379. [2021-03-11 14:42:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4497354497354498) internal successors, (1304), 378 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1304 transitions. [2021-03-11 14:42:06,941 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1304 transitions. Word has length 22 [2021-03-11 14:42:06,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:06,941 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1304 transitions. [2021-03-11 14:42:06,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:06,941 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1304 transitions. [2021-03-11 14:42:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:06,942 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:06,942 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:06,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1373 [2021-03-11 14:42:06,942 INFO L428 AbstractCegarLoop]: === Iteration 1375 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1005448809, now seen corresponding path program 1369 times [2021-03-11 14:42:06,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:06,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929776140] [2021-03-11 14:42:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:06,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:06,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:06,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:06,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:06,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:06,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:07,050 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:07,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:07,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:07,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:07,163 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:07,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:07,219 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:07,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:07,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929776140] [2021-03-11 14:42:07,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:07,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:07,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703997526] [2021-03-11 14:42:07,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:07,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:07,268 INFO L87 Difference]: Start difference. First operand 379 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:07,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:07,427 INFO L93 Difference]: Finished difference Result 573 states and 1696 transitions. [2021-03-11 14:42:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:07,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:07,432 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:42:07,432 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:42:07,432 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 353.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:42:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 383. [2021-03-11 14:42:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.445026178010471) internal successors, (1316), 382 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:07,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1316 transitions. [2021-03-11 14:42:07,438 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:07,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:07,438 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1316 transitions. [2021-03-11 14:42:07,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:07,438 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1316 transitions. [2021-03-11 14:42:07,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:07,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:07,439 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:07,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1374 [2021-03-11 14:42:07,439 INFO L428 AbstractCegarLoop]: === Iteration 1376 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:07,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:07,439 INFO L82 PathProgramCache]: Analyzing trace with hash 605492149, now seen corresponding path program 1370 times [2021-03-11 14:42:07,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:07,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818350942] [2021-03-11 14:42:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:07,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:07,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:07,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:07,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:07,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:07,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:07,494 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:07,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:07,556 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:07,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:07,605 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:07,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:07,671 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:07,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:07,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:07,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:07,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818350942] [2021-03-11 14:42:07,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:07,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:07,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629782590] [2021-03-11 14:42:07,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:07,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:07,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:07,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:07,817 INFO L87 Difference]: Start difference. First operand 383 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,086 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:08,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:08,112 INFO L93 Difference]: Finished difference Result 574 states and 1697 transitions. [2021-03-11 14:42:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:08,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:08,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:08,116 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:42:08,116 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:42:08,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 464.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:42:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 382. [2021-03-11 14:42:08,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4488188976377954) internal successors, (1314), 381 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1314 transitions. [2021-03-11 14:42:08,122 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:08,122 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1314 transitions. [2021-03-11 14:42:08,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1314 transitions. [2021-03-11 14:42:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:08,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:08,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:08,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1375 [2021-03-11 14:42:08,123 INFO L428 AbstractCegarLoop]: === Iteration 1377 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:08,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:08,123 INFO L82 PathProgramCache]: Analyzing trace with hash 7243723, now seen corresponding path program 1371 times [2021-03-11 14:42:08,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:08,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569486801] [2021-03-11 14:42:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:08,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:08,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:08,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:08,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:08,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:08,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:08,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:08,289 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:08,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:08,389 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:08,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:08,466 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:08,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:08,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569486801] [2021-03-11 14:42:08,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:08,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:08,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102067266] [2021-03-11 14:42:08,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:08,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:08,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:08,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:08,536 INFO L87 Difference]: Start difference. First operand 382 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:08,763 INFO L93 Difference]: Finished difference Result 575 states and 1699 transitions. [2021-03-11 14:42:08,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:08,771 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:42:08,771 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:42:08,771 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 449.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:42:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 383. [2021-03-11 14:42:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4424083769633507) internal successors, (1315), 382 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1315 transitions. [2021-03-11 14:42:08,778 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1315 transitions. Word has length 22 [2021-03-11 14:42:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:08,778 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1315 transitions. [2021-03-11 14:42:08,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1315 transitions. [2021-03-11 14:42:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:08,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:08,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:08,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1376 [2021-03-11 14:42:08,778 INFO L428 AbstractCegarLoop]: === Iteration 1378 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash 542473525, now seen corresponding path program 1372 times [2021-03-11 14:42:08,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:08,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703155565] [2021-03-11 14:42:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:08,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:08,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:08,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:08,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:08,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:08,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:08,896 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:08,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:08,947 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:08,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:09,049 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:09,124 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:09,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:09,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703155565] [2021-03-11 14:42:09,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:09,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:09,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50955979] [2021-03-11 14:42:09,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:09,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:09,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:09,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:09,197 INFO L87 Difference]: Start difference. First operand 383 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:09,433 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:09,467 INFO L93 Difference]: Finished difference Result 578 states and 1704 transitions. [2021-03-11 14:42:09,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:09,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:09,471 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:42:09,471 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:42:09,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 505.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:09,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:42:09,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 382. [2021-03-11 14:42:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4461942257217846) internal successors, (1313), 381 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:09,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1313 transitions. [2021-03-11 14:42:09,477 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1313 transitions. Word has length 22 [2021-03-11 14:42:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:09,477 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1313 transitions. [2021-03-11 14:42:09,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1313 transitions. [2021-03-11 14:42:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:09,478 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:09,478 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:09,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1377 [2021-03-11 14:42:09,478 INFO L428 AbstractCegarLoop]: === Iteration 1379 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:09,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:09,478 INFO L82 PathProgramCache]: Analyzing trace with hash 17746827, now seen corresponding path program 1373 times [2021-03-11 14:42:09,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:09,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446594450] [2021-03-11 14:42:09,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:09,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:09,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:09,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:09,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:09,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:09,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:09,531 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:09,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:09,598 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:09,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:09,653 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:09,720 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:09,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:09,807 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:09,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:09,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446594450] [2021-03-11 14:42:09,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:09,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:09,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461608275] [2021-03-11 14:42:09,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:09,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:09,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:09,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:09,884 INFO L87 Difference]: Start difference. First operand 382 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,160 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:10,184 INFO L93 Difference]: Finished difference Result 578 states and 1705 transitions. [2021-03-11 14:42:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:10,188 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:42:10,188 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:42:10,189 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 492.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:10,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:42:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 384. [2021-03-11 14:42:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.436031331592689) internal successors, (1316), 383 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1316 transitions. [2021-03-11 14:42:10,195 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:10,195 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1316 transitions. [2021-03-11 14:42:10,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1316 transitions. [2021-03-11 14:42:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:10,195 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:10,195 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:10,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1378 [2021-03-11 14:42:10,195 INFO L428 AbstractCegarLoop]: === Iteration 1380 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1057964329, now seen corresponding path program 1374 times [2021-03-11 14:42:10,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:10,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505900854] [2021-03-11 14:42:10,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:10,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:10,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:10,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:10,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:10,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:10,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:10,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:10,360 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:10,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:10,419 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:10,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:10,493 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:10,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:10,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505900854] [2021-03-11 14:42:10,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:10,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:10,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486619452] [2021-03-11 14:42:10,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:10,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:10,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:10,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:10,552 INFO L87 Difference]: Start difference. First operand 384 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:10,792 INFO L93 Difference]: Finished difference Result 580 states and 1707 transitions. [2021-03-11 14:42:10,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:10,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:10,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:10,796 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:42:10,796 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:42:10,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 427.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:10,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:42:10,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 381. [2021-03-11 14:42:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.45) internal successors, (1311), 380 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1311 transitions. [2021-03-11 14:42:10,803 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1311 transitions. Word has length 22 [2021-03-11 14:42:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:10,803 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1311 transitions. [2021-03-11 14:42:10,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1311 transitions. [2021-03-11 14:42:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:10,803 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:10,803 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:10,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1379 [2021-03-11 14:42:10,803 INFO L428 AbstractCegarLoop]: === Iteration 1381 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1448347949, now seen corresponding path program 1375 times [2021-03-11 14:42:10,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:10,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438567061] [2021-03-11 14:42:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:10,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:10,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:10,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:10,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:10,861 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:10,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:10,929 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:10,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:11,029 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:11,104 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:11,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:11,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:11,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:11,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438567061] [2021-03-11 14:42:11,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:11,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:11,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967202494] [2021-03-11 14:42:11,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:11,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:11,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:11,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:11,269 INFO L87 Difference]: Start difference. First operand 381 states and 1311 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:11,484 INFO L93 Difference]: Finished difference Result 578 states and 1703 transitions. [2021-03-11 14:42:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:11,489 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:42:11,489 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:42:11,489 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 502.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:11,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:42:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 384. [2021-03-11 14:42:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.441253263707572) internal successors, (1318), 383 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1318 transitions. [2021-03-11 14:42:11,496 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1318 transitions. Word has length 22 [2021-03-11 14:42:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:11,496 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1318 transitions. [2021-03-11 14:42:11,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1318 transitions. [2021-03-11 14:42:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:11,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:11,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:11,496 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1380 [2021-03-11 14:42:11,496 INFO L428 AbstractCegarLoop]: === Iteration 1382 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash 162593009, now seen corresponding path program 1376 times [2021-03-11 14:42:11,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:11,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281037795] [2021-03-11 14:42:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:11,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:11,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:11,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:11,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:11,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:11,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:11,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:11,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:11,617 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:11,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:11,708 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:11,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:11,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:11,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:11,856 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:11,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:11,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:11,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281037795] [2021-03-11 14:42:11,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:11,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:11,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948023132] [2021-03-11 14:42:11,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:11,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:11,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:11,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:11,934 INFO L87 Difference]: Start difference. First operand 384 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,202 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:12,231 INFO L93 Difference]: Finished difference Result 579 states and 1704 transitions. [2021-03-11 14:42:12,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:12,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:12,235 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:42:12,235 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:42:12,235 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 526.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:42:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 383. [2021-03-11 14:42:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.445026178010471) internal successors, (1316), 382 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1316 transitions. [2021-03-11 14:42:12,242 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:12,242 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1316 transitions. [2021-03-11 14:42:12,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1316 transitions. [2021-03-11 14:42:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:12,242 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:12,242 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:12,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1381 [2021-03-11 14:42:12,242 INFO L428 AbstractCegarLoop]: === Iteration 1383 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:12,243 INFO L82 PathProgramCache]: Analyzing trace with hash 658436171, now seen corresponding path program 1377 times [2021-03-11 14:42:12,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:12,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618521020] [2021-03-11 14:42:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:12,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:12,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:12,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:12,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:12,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:12,360 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:12,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:12,446 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:12,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:12,538 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:12,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:12,622 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:12,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:12,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618521020] [2021-03-11 14:42:12,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:12,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:12,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478552164] [2021-03-11 14:42:12,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:12,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:12,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:12,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:12,699 INFO L87 Difference]: Start difference. First operand 383 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:12,950 INFO L93 Difference]: Finished difference Result 585 states and 1715 transitions. [2021-03-11 14:42:12,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:12,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:12,955 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:42:12,955 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:42:12,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 496.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:42:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 385. [2021-03-11 14:42:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4348958333333335) internal successors, (1319), 384 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1319 transitions. [2021-03-11 14:42:12,961 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1319 transitions. Word has length 22 [2021-03-11 14:42:12,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:12,961 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1319 transitions. [2021-03-11 14:42:12,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1319 transitions. [2021-03-11 14:42:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:12,962 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:12,962 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:12,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1382 [2021-03-11 14:42:12,962 INFO L428 AbstractCegarLoop]: === Iteration 1384 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:12,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:12,962 INFO L82 PathProgramCache]: Analyzing trace with hash 120580593, now seen corresponding path program 1378 times [2021-03-11 14:42:12,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:12,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116739649] [2021-03-11 14:42:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:12,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:12,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:12,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:12,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:13,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:13,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:13,085 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:13,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:13,173 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:13,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:13,262 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:13,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:13,341 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:13,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:13,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116739649] [2021-03-11 14:42:13,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:13,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:13,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123324880] [2021-03-11 14:42:13,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:13,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:13,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:13,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:13,419 INFO L87 Difference]: Start difference. First operand 385 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:13,648 INFO L93 Difference]: Finished difference Result 592 states and 1727 transitions. [2021-03-11 14:42:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:13,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:13,652 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:42:13,652 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:42:13,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 493.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:13,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:42:13,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 383. [2021-03-11 14:42:13,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43979057591623) internal successors, (1314), 382 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1314 transitions. [2021-03-11 14:42:13,658 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:13,658 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1314 transitions. [2021-03-11 14:42:13,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1314 transitions. [2021-03-11 14:42:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:13,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:13,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:13,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1383 [2021-03-11 14:42:13,659 INFO L428 AbstractCegarLoop]: === Iteration 1385 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:13,659 INFO L82 PathProgramCache]: Analyzing trace with hash 668939275, now seen corresponding path program 1379 times [2021-03-11 14:42:13,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:13,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810133220] [2021-03-11 14:42:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:13,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:13,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:13,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:13,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:13,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:13,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:13,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:13,773 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:13,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:13,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:13,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:13,966 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:13,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:14,044 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:14,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:14,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810133220] [2021-03-11 14:42:14,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:14,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:14,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010877480] [2021-03-11 14:42:14,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:14,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:14,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:14,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:14,119 INFO L87 Difference]: Start difference. First operand 383 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:14,397 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:14,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:14,423 INFO L93 Difference]: Finished difference Result 588 states and 1720 transitions. [2021-03-11 14:42:14,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:14,427 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:14,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:14,427 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:42:14,428 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:42:14,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 551.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:42:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 386. [2021-03-11 14:42:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.425974025974026) internal successors, (1319), 385 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1319 transitions. [2021-03-11 14:42:14,434 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1319 transitions. Word has length 22 [2021-03-11 14:42:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:14,434 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1319 transitions. [2021-03-11 14:42:14,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1319 transitions. [2021-03-11 14:42:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:14,434 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:14,435 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:14,435 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1384 [2021-03-11 14:42:14,435 INFO L428 AbstractCegarLoop]: === Iteration 1386 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:14,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:14,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1479857261, now seen corresponding path program 1380 times [2021-03-11 14:42:14,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:14,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048535253] [2021-03-11 14:42:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:14,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:14,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:14,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:14,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:14,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:14,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:14,490 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:14,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:14,553 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:14,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:14,644 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:14,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:14,753 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:14,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:14,836 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:14,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:14,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:14,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048535253] [2021-03-11 14:42:14,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:14,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:14,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558420228] [2021-03-11 14:42:14,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:14,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:14,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:14,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:14,912 INFO L87 Difference]: Start difference. First operand 386 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:15,187 INFO L93 Difference]: Finished difference Result 594 states and 1729 transitions. [2021-03-11 14:42:15,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:15,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:15,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:15,192 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:42:15,192 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:42:15,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 514.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:42:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 381. [2021-03-11 14:42:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.444736842105263) internal successors, (1309), 380 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1309 transitions. [2021-03-11 14:42:15,198 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1309 transitions. Word has length 22 [2021-03-11 14:42:15,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:15,198 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1309 transitions. [2021-03-11 14:42:15,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,198 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1309 transitions. [2021-03-11 14:42:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:15,199 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:15,199 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:15,199 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1385 [2021-03-11 14:42:15,199 INFO L428 AbstractCegarLoop]: === Iteration 1387 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:15,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:15,199 INFO L82 PathProgramCache]: Analyzing trace with hash 893042003, now seen corresponding path program 1381 times [2021-03-11 14:42:15,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:15,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67002997] [2021-03-11 14:42:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:15,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:15,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:15,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:15,254 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:15,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:15,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:15,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:15,398 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:15,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:15,473 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:15,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:15,525 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:15,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:15,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67002997] [2021-03-11 14:42:15,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:15,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:15,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726979328] [2021-03-11 14:42:15,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:15,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:15,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:15,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:15,573 INFO L87 Difference]: Start difference. First operand 381 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:15,797 INFO L93 Difference]: Finished difference Result 584 states and 1715 transitions. [2021-03-11 14:42:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:15,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:15,802 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:42:15,802 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:42:15,802 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 415.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:15,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:42:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 384. [2021-03-11 14:42:15,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.436031331592689) internal successors, (1316), 383 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1316 transitions. [2021-03-11 14:42:15,808 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:15,808 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1316 transitions. [2021-03-11 14:42:15,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1316 transitions. [2021-03-11 14:42:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:15,808 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:15,808 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:15,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1386 [2021-03-11 14:42:15,808 INFO L428 AbstractCegarLoop]: === Iteration 1388 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:15,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:15,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1428271805, now seen corresponding path program 1382 times [2021-03-11 14:42:15,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:15,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088830636] [2021-03-11 14:42:15,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:15,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:15,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:15,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:15,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:15,862 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:15,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:15,926 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:15,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:16,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:16,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:16,119 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:16,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:16,199 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:16,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:16,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088830636] [2021-03-11 14:42:16,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:16,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:16,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939287102] [2021-03-11 14:42:16,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:16,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:16,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:16,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:16,273 INFO L87 Difference]: Start difference. First operand 384 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:16,531 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:16,564 INFO L93 Difference]: Finished difference Result 587 states and 1720 transitions. [2021-03-11 14:42:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:16,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:16,569 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:42:16,569 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:42:16,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 555.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:42:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 383. [2021-03-11 14:42:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43979057591623) internal successors, (1314), 382 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1314 transitions. [2021-03-11 14:42:16,575 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:16,575 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1314 transitions. [2021-03-11 14:42:16,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1314 transitions. [2021-03-11 14:42:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:16,576 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:16,576 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:16,576 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1387 [2021-03-11 14:42:16,576 INFO L428 AbstractCegarLoop]: === Iteration 1389 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1987133591, now seen corresponding path program 1383 times [2021-03-11 14:42:16,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:16,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509260499] [2021-03-11 14:42:16,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:16,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:16,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:16,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:16,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:16,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:16,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:16,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:16,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:16,694 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:16,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:16,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:16,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:16,864 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:16,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:16,947 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:16,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:17,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509260499] [2021-03-11 14:42:17,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:17,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:17,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654560508] [2021-03-11 14:42:17,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:17,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:17,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:17,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:17,023 INFO L87 Difference]: Start difference. First operand 383 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:17,251 INFO L93 Difference]: Finished difference Result 587 states and 1719 transitions. [2021-03-11 14:42:17,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:17,255 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:42:17,255 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:42:17,255 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 487.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:17,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:42:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 385. [2021-03-11 14:42:17,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4296875) internal successors, (1317), 384 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1317 transitions. [2021-03-11 14:42:17,261 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:17,261 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1317 transitions. [2021-03-11 14:42:17,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1317 transitions. [2021-03-11 14:42:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:17,262 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:17,262 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:17,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1388 [2021-03-11 14:42:17,262 INFO L428 AbstractCegarLoop]: === Iteration 1390 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:17,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1449278013, now seen corresponding path program 1384 times [2021-03-11 14:42:17,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:17,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037115194] [2021-03-11 14:42:17,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:17,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:17,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:17,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:17,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:17,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:17,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:17,318 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:17,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:17,383 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:17,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:17,471 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:17,562 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:17,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:17,644 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:17,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:17,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037115194] [2021-03-11 14:42:17,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:17,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:17,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279245006] [2021-03-11 14:42:17,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:17,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:17,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:17,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:17,725 INFO L87 Difference]: Start difference. First operand 385 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:17,981 INFO L93 Difference]: Finished difference Result 594 states and 1731 transitions. [2021-03-11 14:42:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:17,986 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:42:17,986 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:42:17,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 499.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:42:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 383. [2021-03-11 14:42:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4345549738219896) internal successors, (1312), 382 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1312 transitions. [2021-03-11 14:42:17,993 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1312 transitions. Word has length 22 [2021-03-11 14:42:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:17,993 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1312 transitions. [2021-03-11 14:42:17,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1312 transitions. [2021-03-11 14:42:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:17,993 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:17,993 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:17,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1389 [2021-03-11 14:42:17,993 INFO L428 AbstractCegarLoop]: === Iteration 1391 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:17,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1934618071, now seen corresponding path program 1385 times [2021-03-11 14:42:17,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:17,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002420131] [2021-03-11 14:42:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:18,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:18,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:18,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:18,047 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:18,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:18,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:18,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:18,188 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:18,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:18,294 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:18,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:18,370 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:18,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:18,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002420131] [2021-03-11 14:42:18,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:18,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:18,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218010149] [2021-03-11 14:42:18,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:18,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:18,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:18,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:18,444 INFO L87 Difference]: Start difference. First operand 383 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:18,713 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:18,740 INFO L93 Difference]: Finished difference Result 596 states and 1738 transitions. [2021-03-11 14:42:18,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:18,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:18,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:18,745 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:42:18,745 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:42:18,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 542.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:42:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 388. [2021-03-11 14:42:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.41343669250646) internal successors, (1321), 387 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1321 transitions. [2021-03-11 14:42:18,751 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1321 transitions. Word has length 22 [2021-03-11 14:42:18,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:18,751 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1321 transitions. [2021-03-11 14:42:18,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:18,751 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1321 transitions. [2021-03-11 14:42:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:18,752 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:18,752 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:18,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1390 [2021-03-11 14:42:18,752 INFO L428 AbstractCegarLoop]: === Iteration 1392 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:18,752 INFO L82 PathProgramCache]: Analyzing trace with hash 861532691, now seen corresponding path program 1386 times [2021-03-11 14:42:18,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:18,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578779285] [2021-03-11 14:42:18,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:18,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:18,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:18,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:18,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:18,809 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:18,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:18,875 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:18,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:18,957 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:18,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:19,062 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:19,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:19,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:19,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:19,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578779285] [2021-03-11 14:42:19,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:19,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:19,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052625457] [2021-03-11 14:42:19,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:19,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:19,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:19,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:19,212 INFO L87 Difference]: Start difference. First operand 388 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:19,496 INFO L93 Difference]: Finished difference Result 592 states and 1727 transitions. [2021-03-11 14:42:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:19,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:19,500 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:42:19,500 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:42:19,500 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 496.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:42:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 381. [2021-03-11 14:42:19,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4394736842105265) internal successors, (1307), 380 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1307 transitions. [2021-03-11 14:42:19,507 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1307 transitions. Word has length 22 [2021-03-11 14:42:19,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:19,507 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1307 transitions. [2021-03-11 14:42:19,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1307 transitions. [2021-03-11 14:42:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:19,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:19,507 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:19,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1391 [2021-03-11 14:42:19,507 INFO L428 AbstractCegarLoop]: === Iteration 1393 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:19,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:19,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1465388111, now seen corresponding path program 1387 times [2021-03-11 14:42:19,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:19,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910601607] [2021-03-11 14:42:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:19,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:19,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:19,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:19,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:19,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:19,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:19,566 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:19,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:19,636 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:19,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:19,721 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:19,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:19,787 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:19,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:19,869 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:19,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:19,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910601607] [2021-03-11 14:42:19,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:19,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:19,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52287723] [2021-03-11 14:42:19,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:19,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:19,946 INFO L87 Difference]: Start difference. First operand 381 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,179 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:20,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:20,205 INFO L93 Difference]: Finished difference Result 591 states and 1732 transitions. [2021-03-11 14:42:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:20,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:20,210 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:42:20,210 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:42:20,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 530.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:42:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 386. [2021-03-11 14:42:20,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4285714285714284) internal successors, (1320), 385 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1320 transitions. [2021-03-11 14:42:20,216 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1320 transitions. Word has length 22 [2021-03-11 14:42:20,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:20,216 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1320 transitions. [2021-03-11 14:42:20,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,217 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1320 transitions. [2021-03-11 14:42:20,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:20,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:20,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:20,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1392 [2021-03-11 14:42:20,217 INFO L428 AbstractCegarLoop]: === Iteration 1394 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:20,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:20,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1753868029, now seen corresponding path program 1388 times [2021-03-11 14:42:20,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:20,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431603809] [2021-03-11 14:42:20,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:20,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:20,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:20,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:20,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:20,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:20,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:20,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:20,426 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:20,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:20,487 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:20,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:20,568 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:20,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:20,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:20,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431603809] [2021-03-11 14:42:20,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:20,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:20,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848677639] [2021-03-11 14:42:20,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:20,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:20,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:20,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:20,644 INFO L87 Difference]: Start difference. First operand 386 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,888 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:20,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:20,917 INFO L93 Difference]: Finished difference Result 593 states and 1734 transitions. [2021-03-11 14:42:20,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:20,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:20,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:20,922 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:42:20,922 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:42:20,922 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 519.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:42:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 384. [2021-03-11 14:42:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.433420365535248) internal successors, (1315), 383 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1315 transitions. [2021-03-11 14:42:20,928 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1315 transitions. Word has length 22 [2021-03-11 14:42:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:20,928 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1315 transitions. [2021-03-11 14:42:20,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1315 transitions. [2021-03-11 14:42:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:20,929 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:20,929 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:20,929 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1393 [2021-03-11 14:42:20,929 INFO L428 AbstractCegarLoop]: === Iteration 1395 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash -371296523, now seen corresponding path program 1389 times [2021-03-11 14:42:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:20,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879707291] [2021-03-11 14:42:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:20,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:20,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:20,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:20,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:20,987 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:20,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:21,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:21,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:21,142 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:21,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:21,260 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:21,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:21,355 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:21,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:21,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879707291] [2021-03-11 14:42:21,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:21,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:21,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616812691] [2021-03-11 14:42:21,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:21,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:21,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:21,429 INFO L87 Difference]: Start difference. First operand 384 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:21,723 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:21,749 INFO L93 Difference]: Finished difference Result 593 states and 1732 transitions. [2021-03-11 14:42:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:21,753 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:21,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:21,754 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:42:21,754 INFO L226 Difference]: Without dead ends: 583 [2021-03-11 14:42:21,754 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 592.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:21,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-03-11 14:42:21,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 387. [2021-03-11 14:42:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4196891191709846) internal successors, (1320), 386 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:21,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1320 transitions. [2021-03-11 14:42:21,760 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1320 transitions. Word has length 22 [2021-03-11 14:42:21,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:21,760 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1320 transitions. [2021-03-11 14:42:21,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1320 transitions. [2021-03-11 14:42:21,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:21,761 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:21,761 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:21,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1394 [2021-03-11 14:42:21,761 INFO L428 AbstractCegarLoop]: === Iteration 1396 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1774874237, now seen corresponding path program 1390 times [2021-03-11 14:42:21,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:21,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763817714] [2021-03-11 14:42:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:21,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:21,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:21,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:21,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:21,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:21,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:21,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:21,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:21,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:21,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:21,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:21,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:22,072 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:22,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:22,129 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:22,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:22,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763817714] [2021-03-11 14:42:22,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:22,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:22,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511460887] [2021-03-11 14:42:22,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:22,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:22,180 INFO L87 Difference]: Start difference. First operand 387 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:22,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:22,375 INFO L93 Difference]: Finished difference Result 599 states and 1741 transitions. [2021-03-11 14:42:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:22,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:22,380 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:42:22,380 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:42:22,380 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 452.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:42:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 384. [2021-03-11 14:42:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.425587467362924) internal successors, (1312), 383 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1312 transitions. [2021-03-11 14:42:22,386 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1312 transitions. Word has length 22 [2021-03-11 14:42:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:22,386 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1312 transitions. [2021-03-11 14:42:22,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1312 transitions. [2021-03-11 14:42:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:22,387 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:22,387 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:22,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1395 [2021-03-11 14:42:22,387 INFO L428 AbstractCegarLoop]: === Iteration 1397 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:22,387 INFO L82 PathProgramCache]: Analyzing trace with hash -434315147, now seen corresponding path program 1391 times [2021-03-11 14:42:22,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:22,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900865296] [2021-03-11 14:42:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:22,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:22,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:22,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:22,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:22,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:22,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:22,444 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:22,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:22,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:22,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:22,597 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:22,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:22,709 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:22,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:22,790 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:22,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:22,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900865296] [2021-03-11 14:42:22,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:22,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:22,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920652380] [2021-03-11 14:42:22,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:22,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:22,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:22,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:22,870 INFO L87 Difference]: Start difference. First operand 384 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,113 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:23,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:23,138 INFO L93 Difference]: Finished difference Result 599 states and 1743 transitions. [2021-03-11 14:42:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:23,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:23,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:23,143 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:42:23,143 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:42:23,143 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 572.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:23,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:42:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 389. [2021-03-11 14:42:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.404639175257732) internal successors, (1321), 388 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1321 transitions. [2021-03-11 14:42:23,150 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1321 transitions. Word has length 22 [2021-03-11 14:42:23,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:23,150 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1321 transitions. [2021-03-11 14:42:23,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1321 transitions. [2021-03-11 14:42:23,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:23,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:23,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:23,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1396 [2021-03-11 14:42:23,150 INFO L428 AbstractCegarLoop]: === Iteration 1398 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1507400527, now seen corresponding path program 1392 times [2021-03-11 14:42:23,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:23,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279448278] [2021-03-11 14:42:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:23,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:23,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:23,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:23,207 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:23,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:23,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:23,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:23,359 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:23,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:23,468 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:23,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:23,550 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:23,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:23,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279448278] [2021-03-11 14:42:23,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:23,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:23,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903461738] [2021-03-11 14:42:23,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:23,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:23,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:23,626 INFO L87 Difference]: Start difference. First operand 389 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:23,894 INFO L93 Difference]: Finished difference Result 595 states and 1732 transitions. [2021-03-11 14:42:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:23,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:23,899 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:42:23,899 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:42:23,899 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 515.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:23,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:42:23,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 379. [2021-03-11 14:42:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4444444444444446) internal successors, (1302), 378 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1302 transitions. [2021-03-11 14:42:23,905 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1302 transitions. Word has length 22 [2021-03-11 14:42:23,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:23,905 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1302 transitions. [2021-03-11 14:42:23,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:23,905 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1302 transitions. [2021-03-11 14:42:23,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:23,906 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:23,906 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:23,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1397 [2021-03-11 14:42:23,906 INFO L428 AbstractCegarLoop]: === Iteration 1399 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:23,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1102338311, now seen corresponding path program 1393 times [2021-03-11 14:42:23,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:23,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158891860] [2021-03-11 14:42:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:23,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:23,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:23,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:23,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:23,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:23,963 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:23,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:24,031 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:24,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:24,119 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:24,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:24,223 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:24,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:24,310 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:24,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:24,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158891860] [2021-03-11 14:42:24,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:24,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:24,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106995545] [2021-03-11 14:42:24,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:24,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:24,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:24,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:24,389 INFO L87 Difference]: Start difference. First operand 379 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:24,623 INFO L93 Difference]: Finished difference Result 599 states and 1758 transitions. [2021-03-11 14:42:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:24,628 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:42:24,628 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:42:24,628 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 523.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:24,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:42:24,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 384. [2021-03-11 14:42:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4386422976501305) internal successors, (1317), 383 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:24,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1317 transitions. [2021-03-11 14:42:24,635 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:24,635 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1317 transitions. [2021-03-11 14:42:24,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1317 transitions. [2021-03-11 14:42:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:24,635 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:24,635 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:24,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1398 [2021-03-11 14:42:24,636 INFO L428 AbstractCegarLoop]: === Iteration 1400 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:24,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:24,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2119543605, now seen corresponding path program 1394 times [2021-03-11 14:42:24,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:24,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157740332] [2021-03-11 14:42:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:24,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:24,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:24,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:24,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:24,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:24,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:24,693 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:24,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:24,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:24,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:24,858 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:24,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:24,957 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:24,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:25,060 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:25,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:25,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157740332] [2021-03-11 14:42:25,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:25,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:25,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305475978] [2021-03-11 14:42:25,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:25,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:25,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:25,140 INFO L87 Difference]: Start difference. First operand 384 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:25,375 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:25,405 INFO L93 Difference]: Finished difference Result 604 states and 1767 transitions. [2021-03-11 14:42:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:25,410 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:42:25,410 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:42:25,410 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 590.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:42:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 383. [2021-03-11 14:42:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4424083769633507) internal successors, (1315), 382 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1315 transitions. [2021-03-11 14:42:25,416 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1315 transitions. Word has length 22 [2021-03-11 14:42:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:25,416 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1315 transitions. [2021-03-11 14:42:25,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1315 transitions. [2021-03-11 14:42:25,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:25,417 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:25,417 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:25,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1399 [2021-03-11 14:42:25,417 INFO L428 AbstractCegarLoop]: === Iteration 1401 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:25,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:25,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1510792075, now seen corresponding path program 1395 times [2021-03-11 14:42:25,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:25,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39140004] [2021-03-11 14:42:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:25,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:25,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:25,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:25,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:25,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:25,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:25,458 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:25,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:25,497 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:25,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:25,550 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:25,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:25,618 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:25,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:25,690 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:25,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:25,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39140004] [2021-03-11 14:42:25,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:25,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:25,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673066] [2021-03-11 14:42:25,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:25,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:25,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:25,772 INFO L87 Difference]: Start difference. First operand 383 states and 1315 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:26,018 INFO L93 Difference]: Finished difference Result 597 states and 1753 transitions. [2021-03-11 14:42:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:26,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:26,024 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:42:26,024 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:42:26,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 402.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:42:26,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 384. [2021-03-11 14:42:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.436031331592689) internal successors, (1316), 383 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1316 transitions. [2021-03-11 14:42:26,030 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:26,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:26,030 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1316 transitions. [2021-03-11 14:42:26,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,030 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1316 transitions. [2021-03-11 14:42:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:26,031 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:26,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:26,031 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1400 [2021-03-11 14:42:26,031 INFO L428 AbstractCegarLoop]: === Iteration 1402 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:26,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2046021877, now seen corresponding path program 1396 times [2021-03-11 14:42:26,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:26,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4348019] [2021-03-11 14:42:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:26,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:26,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:26,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:26,092 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:26,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:26,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:26,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:26,256 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:26,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:26,374 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:26,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:26,458 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:26,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:26,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:26,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4348019] [2021-03-11 14:42:26,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:26,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:26,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153551709] [2021-03-11 14:42:26,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:26,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:26,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:26,541 INFO L87 Difference]: Start difference. First operand 384 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,796 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:26,832 INFO L93 Difference]: Finished difference Result 600 states and 1758 transitions. [2021-03-11 14:42:26,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:26,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:26,837 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:42:26,837 INFO L226 Difference]: Without dead ends: 587 [2021-03-11 14:42:26,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 603.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2021-03-11 14:42:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 383. [2021-03-11 14:42:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43979057591623) internal successors, (1314), 382 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1314 transitions. [2021-03-11 14:42:26,843 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:26,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:26,843 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1314 transitions. [2021-03-11 14:42:26,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:26,843 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1314 transitions. [2021-03-11 14:42:26,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:26,844 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:26,844 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:26,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1401 [2021-03-11 14:42:26,844 INFO L428 AbstractCegarLoop]: === Iteration 1403 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1531798283, now seen corresponding path program 1397 times [2021-03-11 14:42:26,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:26,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597168002] [2021-03-11 14:42:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:26,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:26,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:26,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:26,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:26,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:26,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:26,966 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:26,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:27,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:27,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:27,116 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:27,198 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:27,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:27,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597168002] [2021-03-11 14:42:27,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:27,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:27,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606285955] [2021-03-11 14:42:27,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:27,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:27,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:27,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:27,274 INFO L87 Difference]: Start difference. First operand 383 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:27,556 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:27,581 INFO L93 Difference]: Finished difference Result 610 states and 1781 transitions. [2021-03-11 14:42:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:27,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:27,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:27,586 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:42:27,586 INFO L226 Difference]: Without dead ends: 596 [2021-03-11 14:42:27,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 527.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:27,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-03-11 14:42:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 387. [2021-03-11 14:42:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.422279792746114) internal successors, (1321), 386 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1321 transitions. [2021-03-11 14:42:27,593 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1321 transitions. Word has length 22 [2021-03-11 14:42:27,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:27,593 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1321 transitions. [2021-03-11 14:42:27,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1321 transitions. [2021-03-11 14:42:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:27,593 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:27,594 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:27,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1402 [2021-03-11 14:42:27,594 INFO L428 AbstractCegarLoop]: === Iteration 1404 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:27,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:27,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1154853831, now seen corresponding path program 1398 times [2021-03-11 14:42:27,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:27,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467212790] [2021-03-11 14:42:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:27,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:27,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:27,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:27,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:27,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:27,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:27,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:27,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:27,714 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:27,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:27,797 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:27,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:27,860 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:27,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:27,937 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:27,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:28,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:28,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467212790] [2021-03-11 14:42:28,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:28,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:28,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609085216] [2021-03-11 14:42:28,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:28,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:28,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:28,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:28,014 INFO L87 Difference]: Start difference. First operand 387 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,273 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:28,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:28,309 INFO L93 Difference]: Finished difference Result 608 states and 1773 transitions. [2021-03-11 14:42:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:28,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:28,313 INFO L225 Difference]: With dead ends: 608 [2021-03-11 14:42:28,313 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:42:28,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 513.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:28,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:42:28,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 382. [2021-03-11 14:42:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4435695538057742) internal successors, (1312), 381 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1312 transitions. [2021-03-11 14:42:28,319 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1312 transitions. Word has length 22 [2021-03-11 14:42:28,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:28,320 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1312 transitions. [2021-03-11 14:42:28,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,320 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1312 transitions. [2021-03-11 14:42:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:28,320 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:28,320 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:28,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1403 [2021-03-11 14:42:28,320 INFO L428 AbstractCegarLoop]: === Iteration 1405 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1545237451, now seen corresponding path program 1399 times [2021-03-11 14:42:28,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:28,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312942910] [2021-03-11 14:42:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:28,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:28,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:28,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:28,376 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:28,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:28,452 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:28,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:28,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:28,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:28,632 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:28,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:28,716 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:28,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:28,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312942910] [2021-03-11 14:42:28,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:28,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:28,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033989373] [2021-03-11 14:42:28,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:28,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:28,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:28,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:28,793 INFO L87 Difference]: Start difference. First operand 382 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:28,951 INFO L93 Difference]: Finished difference Result 607 states and 1772 transitions. [2021-03-11 14:42:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:28,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:28,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:28,954 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:42:28,954 INFO L226 Difference]: Without dead ends: 598 [2021-03-11 14:42:28,954 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 488.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:28,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-03-11 14:42:28,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 386. [2021-03-11 14:42:28,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.431168831168831) internal successors, (1321), 385 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1321 transitions. [2021-03-11 14:42:28,960 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1321 transitions. Word has length 22 [2021-03-11 14:42:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:28,960 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1321 transitions. [2021-03-11 14:42:28,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1321 transitions. [2021-03-11 14:42:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:28,961 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:28,961 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:28,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1404 [2021-03-11 14:42:28,961 INFO L428 AbstractCegarLoop]: === Iteration 1406 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:28,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:28,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1676644465, now seen corresponding path program 1400 times [2021-03-11 14:42:28,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:28,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182729911] [2021-03-11 14:42:28,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:28,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:28,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:28,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:28,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:29,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:29,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:29,046 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:29,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:29,126 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:29,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:29,228 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:29,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:29,312 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:29,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:29,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182729911] [2021-03-11 14:42:29,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:29,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:29,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374702890] [2021-03-11 14:42:29,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:29,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:29,388 INFO L87 Difference]: Start difference. First operand 386 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:29,631 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:29,661 INFO L93 Difference]: Finished difference Result 612 states and 1781 transitions. [2021-03-11 14:42:29,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:29,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:29,666 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:42:29,666 INFO L226 Difference]: Without dead ends: 597 [2021-03-11 14:42:29,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 521.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-03-11 14:42:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 385. [2021-03-11 14:42:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4348958333333335) internal successors, (1319), 384 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1319 transitions. [2021-03-11 14:42:29,673 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1319 transitions. Word has length 22 [2021-03-11 14:42:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:29,673 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1319 transitions. [2021-03-11 14:42:29,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1319 transitions. [2021-03-11 14:42:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:29,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:29,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:29,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1405 [2021-03-11 14:42:29,673 INFO L428 AbstractCegarLoop]: === Iteration 1407 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:29,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -2132982773, now seen corresponding path program 1401 times [2021-03-11 14:42:29,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:29,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812694611] [2021-03-11 14:42:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:29,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:29,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:29,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:29,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:29,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:29,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:29,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:29,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:29,800 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:29,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:29,878 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:29,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:29,973 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:29,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:30,062 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:30,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:30,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812694611] [2021-03-11 14:42:30,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:30,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:30,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014722254] [2021-03-11 14:42:30,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:30,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:30,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:30,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:30,143 INFO L87 Difference]: Start difference. First operand 385 states and 1319 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:30,365 INFO L93 Difference]: Finished difference Result 610 states and 1776 transitions. [2021-03-11 14:42:30,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:30,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:30,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:30,370 INFO L225 Difference]: With dead ends: 610 [2021-03-11 14:42:30,370 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:42:30,370 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 512.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:42:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 387. [2021-03-11 14:42:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4248704663212437) internal successors, (1322), 386 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1322 transitions. [2021-03-11 14:42:30,376 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:30,376 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1322 transitions. [2021-03-11 14:42:30,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1322 transitions. [2021-03-11 14:42:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:30,377 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:30,377 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:30,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1406 [2021-03-11 14:42:30,377 INFO L428 AbstractCegarLoop]: === Iteration 1408 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1624128945, now seen corresponding path program 1402 times [2021-03-11 14:42:30,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:30,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631016924] [2021-03-11 14:42:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:30,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:30,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:30,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:30,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:30,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:30,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:30,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:30,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:30,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:30,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:30,584 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:30,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:30,677 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:30,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:30,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:30,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:30,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631016924] [2021-03-11 14:42:30,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:30,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:30,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983662717] [2021-03-11 14:42:30,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:30,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:30,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:30,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:30,835 INFO L87 Difference]: Start difference. First operand 387 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:31,110 INFO L93 Difference]: Finished difference Result 617 states and 1788 transitions. [2021-03-11 14:42:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:31,115 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:42:31,115 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:42:31,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 502.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:31,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:42:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 385. [2021-03-11 14:42:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4296875) internal successors, (1317), 384 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1317 transitions. [2021-03-11 14:42:31,122 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:31,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:31,122 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1317 transitions. [2021-03-11 14:42:31,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1317 transitions. [2021-03-11 14:42:31,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:31,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:31,123 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:31,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1407 [2021-03-11 14:42:31,123 INFO L428 AbstractCegarLoop]: === Iteration 1409 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:31,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2111976565, now seen corresponding path program 1403 times [2021-03-11 14:42:31,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:31,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072053680] [2021-03-11 14:42:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:31,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:31,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:31,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:31,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:31,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:31,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:31,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:31,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:31,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:31,415 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:31,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:31,501 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:31,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:31,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072053680] [2021-03-11 14:42:31,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:31,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:31,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693348940] [2021-03-11 14:42:31,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:31,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:31,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:31,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:31,582 INFO L87 Difference]: Start difference. First operand 385 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,883 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:31,907 INFO L93 Difference]: Finished difference Result 626 states and 1810 transitions. [2021-03-11 14:42:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:31,911 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:31,912 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:42:31,912 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:42:31,912 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 547.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:42:31,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 393. [2021-03-11 14:42:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.395408163265306) internal successors, (1331), 392 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1331 transitions. [2021-03-11 14:42:31,918 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1331 transitions. Word has length 22 [2021-03-11 14:42:31,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:31,918 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1331 transitions. [2021-03-11 14:42:31,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:31,918 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1331 transitions. [2021-03-11 14:42:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:31,919 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:31,919 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:31,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1408 [2021-03-11 14:42:31,919 INFO L428 AbstractCegarLoop]: === Iteration 1410 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:31,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:31,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1576746763, now seen corresponding path program 1404 times [2021-03-11 14:42:31,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:31,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155893606] [2021-03-11 14:42:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:31,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:31,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:31,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:31,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:31,975 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:31,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:32,046 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:42:32,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:42:32,123 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:32,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:32,193 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:32,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:32,279 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:32,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:32,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155893606] [2021-03-11 14:42:32,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:32,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:32,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064307164] [2021-03-11 14:42:32,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:32,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:32,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:32,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:32,359 INFO L87 Difference]: Start difference. First operand 393 states and 1331 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:32,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:32,611 INFO L93 Difference]: Finished difference Result 628 states and 1807 transitions. [2021-03-11 14:42:32,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:32,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:32,616 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:42:32,616 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:42:32,616 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 481.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:42:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 382. [2021-03-11 14:42:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4356955380577427) internal successors, (1309), 381 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1309 transitions. [2021-03-11 14:42:32,622 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1309 transitions. Word has length 22 [2021-03-11 14:42:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:32,623 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1309 transitions. [2021-03-11 14:42:32,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1309 transitions. [2021-03-11 14:42:32,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:32,623 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:32,623 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:32,623 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1409 [2021-03-11 14:42:32,623 INFO L428 AbstractCegarLoop]: === Iteration 1411 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:32,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:32,623 INFO L82 PathProgramCache]: Analyzing trace with hash 470556277, now seen corresponding path program 1405 times [2021-03-11 14:42:32,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:32,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594002395] [2021-03-11 14:42:32,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:32,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:32,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:32,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:32,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:32,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:32,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:32,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:32,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:32,751 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:32,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:32,814 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:32,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:32,886 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:32,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:32,944 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:33,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594002395] [2021-03-11 14:42:33,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:33,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:33,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099885043] [2021-03-11 14:42:33,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:33,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:33,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:33,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:33,009 INFO L87 Difference]: Start difference. First operand 382 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:33,275 INFO L93 Difference]: Finished difference Result 599 states and 1752 transitions. [2021-03-11 14:42:33,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:33,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:33,280 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:42:33,280 INFO L226 Difference]: Without dead ends: 590 [2021-03-11 14:42:33,280 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 431.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-03-11 14:42:33,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 385. [2021-03-11 14:42:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4270833333333335) internal successors, (1316), 384 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1316 transitions. [2021-03-11 14:42:33,286 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:33,286 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1316 transitions. [2021-03-11 14:42:33,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1316 transitions. [2021-03-11 14:42:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:33,287 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:33,287 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:33,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1410 [2021-03-11 14:42:33,287 INFO L428 AbstractCegarLoop]: === Iteration 1412 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:33,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:33,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1005786079, now seen corresponding path program 1406 times [2021-03-11 14:42:33,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:33,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555257262] [2021-03-11 14:42:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:33,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:33,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:33,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:33,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:33,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:33,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:33,347 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:33,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:33,415 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:33,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:33,504 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:33,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:33,611 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:33,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:33,691 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:33,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:33,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555257262] [2021-03-11 14:42:33,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:33,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:33,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991638949] [2021-03-11 14:42:33,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:33,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:33,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:33,770 INFO L87 Difference]: Start difference. First operand 385 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,070 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:34,101 INFO L93 Difference]: Finished difference Result 602 states and 1757 transitions. [2021-03-11 14:42:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:34,106 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:42:34,106 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:42:34,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 576.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:42:34,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 384. [2021-03-11 14:42:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.430809399477807) internal successors, (1314), 383 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1314 transitions. [2021-03-11 14:42:34,112 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:34,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:34,112 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1314 transitions. [2021-03-11 14:42:34,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1314 transitions. [2021-03-11 14:42:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:34,112 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:34,112 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:34,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1411 [2021-03-11 14:42:34,113 INFO L428 AbstractCegarLoop]: === Iteration 1413 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1564647865, now seen corresponding path program 1407 times [2021-03-11 14:42:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:34,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076378150] [2021-03-11 14:42:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:34,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:34,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:34,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:34,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:34,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:34,229 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:34,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:34,306 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:34,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:34,400 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:34,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:34,486 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:34,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:34,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076378150] [2021-03-11 14:42:34,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:34,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:34,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723143002] [2021-03-11 14:42:34,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:34,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:34,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:34,567 INFO L87 Difference]: Start difference. First operand 384 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:34,822 INFO L93 Difference]: Finished difference Result 602 states and 1756 transitions. [2021-03-11 14:42:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:34,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:34,827 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:42:34,827 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:42:34,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 496.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:42:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 386. [2021-03-11 14:42:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4207792207792207) internal successors, (1317), 385 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1317 transitions. [2021-03-11 14:42:34,833 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:34,834 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1317 transitions. [2021-03-11 14:42:34,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:34,834 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1317 transitions. [2021-03-11 14:42:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:34,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:34,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:34,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1412 [2021-03-11 14:42:34,834 INFO L428 AbstractCegarLoop]: === Iteration 1414 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:34,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1026792287, now seen corresponding path program 1408 times [2021-03-11 14:42:34,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:34,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723546676] [2021-03-11 14:42:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:34,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:34,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:34,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:34,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:34,895 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:34,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:34,963 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:34,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:35,052 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:35,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:35,147 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:35,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:35,235 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:35,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:35,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723546676] [2021-03-11 14:42:35,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:35,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:35,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964678675] [2021-03-11 14:42:35,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:35,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:35,314 INFO L87 Difference]: Start difference. First operand 386 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:35,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:35,620 INFO L93 Difference]: Finished difference Result 609 states and 1768 transitions. [2021-03-11 14:42:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:35,624 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:35,625 INFO L225 Difference]: With dead ends: 609 [2021-03-11 14:42:35,625 INFO L226 Difference]: Without dead ends: 591 [2021-03-11 14:42:35,625 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 520.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:35,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-03-11 14:42:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 384. [2021-03-11 14:42:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.425587467362924) internal successors, (1312), 383 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1312 transitions. [2021-03-11 14:42:35,632 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1312 transitions. Word has length 22 [2021-03-11 14:42:35,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:35,632 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1312 transitions. [2021-03-11 14:42:35,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1312 transitions. [2021-03-11 14:42:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:35,632 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:35,632 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:35,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1413 [2021-03-11 14:42:35,632 INFO L428 AbstractCegarLoop]: === Iteration 1415 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:35,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1512132345, now seen corresponding path program 1409 times [2021-03-11 14:42:35,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:35,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872042223] [2021-03-11 14:42:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:35,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:35,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:35,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:35,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:35,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:35,692 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:35,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:35,764 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:35,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:35,854 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:35,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:35,965 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:35,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:36,047 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:36,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:36,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872042223] [2021-03-11 14:42:36,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:36,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:36,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173997762] [2021-03-11 14:42:36,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:36,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:36,125 INFO L87 Difference]: Start difference. First operand 384 states and 1312 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:36,371 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:36,402 INFO L93 Difference]: Finished difference Result 611 states and 1775 transitions. [2021-03-11 14:42:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:36,406 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:36,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:36,407 INFO L225 Difference]: With dead ends: 611 [2021-03-11 14:42:36,407 INFO L226 Difference]: Without dead ends: 599 [2021-03-11 14:42:36,407 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 578.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-03-11 14:42:36,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 389. [2021-03-11 14:42:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.404639175257732) internal successors, (1321), 388 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1321 transitions. [2021-03-11 14:42:36,414 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1321 transitions. Word has length 22 [2021-03-11 14:42:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:36,414 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1321 transitions. [2021-03-11 14:42:36,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1321 transitions. [2021-03-11 14:42:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:36,414 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:36,414 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:36,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1414 [2021-03-11 14:42:36,415 INFO L428 AbstractCegarLoop]: === Iteration 1416 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:36,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:36,415 INFO L82 PathProgramCache]: Analyzing trace with hash 439046965, now seen corresponding path program 1410 times [2021-03-11 14:42:36,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:36,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036410518] [2021-03-11 14:42:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:36,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:36,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:36,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:36,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:36,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:36,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:36,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:36,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:36,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:36,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:36,632 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:36,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:36,744 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:36,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:36,831 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:36,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:36,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036410518] [2021-03-11 14:42:36,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:36,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:36,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113217197] [2021-03-11 14:42:36,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:36,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:36,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:36,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:36,912 INFO L87 Difference]: Start difference. First operand 389 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:37,201 INFO L93 Difference]: Finished difference Result 607 states and 1764 transitions. [2021-03-11 14:42:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:37,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:37,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:37,205 INFO L225 Difference]: With dead ends: 607 [2021-03-11 14:42:37,205 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:42:37,205 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 539.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:37,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:42:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 382. [2021-03-11 14:42:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4304461942257216) internal successors, (1307), 381 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1307 transitions. [2021-03-11 14:42:37,211 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1307 transitions. Word has length 22 [2021-03-11 14:42:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:37,211 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1307 transitions. [2021-03-11 14:42:37,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1307 transitions. [2021-03-11 14:42:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:37,212 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:37,212 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:37,212 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1415 [2021-03-11 14:42:37,212 INFO L428 AbstractCegarLoop]: === Iteration 1417 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:37,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:37,212 INFO L82 PathProgramCache]: Analyzing trace with hash 48663345, now seen corresponding path program 1411 times [2021-03-11 14:42:37,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:37,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605957953] [2021-03-11 14:42:37,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:37,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:37,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:37,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:37,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:37,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:37,293 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:37,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:37,327 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:37,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:37,371 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:37,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:37,432 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:37,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605957953] [2021-03-11 14:42:37,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:37,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:37,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049504432] [2021-03-11 14:42:37,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:37,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:37,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:37,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:37,513 INFO L87 Difference]: Start difference. First operand 382 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,783 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:37,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:37,808 INFO L93 Difference]: Finished difference Result 630 states and 1828 transitions. [2021-03-11 14:42:37,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:37,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:37,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:37,813 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:42:37,813 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:42:37,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 404.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:37,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:42:37,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 392. [2021-03-11 14:42:37,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.411764705882353) internal successors, (1334), 391 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1334 transitions. [2021-03-11 14:42:37,820 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1334 transitions. Word has length 22 [2021-03-11 14:42:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:37,820 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 1334 transitions. [2021-03-11 14:42:37,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1334 transitions. [2021-03-11 14:42:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:37,821 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:37,821 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:37,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1416 [2021-03-11 14:42:37,821 INFO L428 AbstractCegarLoop]: === Iteration 1418 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:37,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:37,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1656978527, now seen corresponding path program 1412 times [2021-03-11 14:42:37,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:37,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665940612] [2021-03-11 14:42:37,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:37,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:37,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:37,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:37,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:37,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:37,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:37,951 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:37,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:38,005 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:38,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:38,072 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:38,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:38,152 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:38,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:38,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665940612] [2021-03-11 14:42:38,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:38,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:38,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652228258] [2021-03-11 14:42:38,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:38,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:38,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:38,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:38,229 INFO L87 Difference]: Start difference. First operand 392 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:38,461 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:38,490 INFO L93 Difference]: Finished difference Result 628 states and 1820 transitions. [2021-03-11 14:42:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:38,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:38,494 INFO L225 Difference]: With dead ends: 628 [2021-03-11 14:42:38,494 INFO L226 Difference]: Without dead ends: 612 [2021-03-11 14:42:38,494 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 497.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-03-11 14:42:38,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 388. [2021-03-11 14:42:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4186046511627906) internal successors, (1323), 387 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:38,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1323 transitions. [2021-03-11 14:42:38,501 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1323 transitions. Word has length 22 [2021-03-11 14:42:38,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:38,501 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1323 transitions. [2021-03-11 14:42:38,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1323 transitions. [2021-03-11 14:42:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:38,501 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:38,501 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:38,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1417 [2021-03-11 14:42:38,501 INFO L428 AbstractCegarLoop]: === Iteration 1419 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:38,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:38,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1142754933, now seen corresponding path program 1413 times [2021-03-11 14:42:38,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:38,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702090013] [2021-03-11 14:42:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:38,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:38,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:38,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:38,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:38,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:38,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:38,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:38,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:38,620 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:38,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:38,679 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:38,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:38,752 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:38,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:38,837 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:38,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:38,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:38,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702090013] [2021-03-11 14:42:38,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:38,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:38,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462812738] [2021-03-11 14:42:38,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:38,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:38,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:38,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:38,914 INFO L87 Difference]: Start difference. First operand 388 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,200 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:39,225 INFO L93 Difference]: Finished difference Result 630 states and 1820 transitions. [2021-03-11 14:42:39,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:39,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:39,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:39,230 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:42:39,230 INFO L226 Difference]: Without dead ends: 616 [2021-03-11 14:42:39,230 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 506.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-03-11 14:42:39,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 396. [2021-03-11 14:42:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.3848101265822783) internal successors, (1337), 395 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1337 transitions. [2021-03-11 14:42:39,237 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1337 transitions. Word has length 22 [2021-03-11 14:42:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:39,237 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 1337 transitions. [2021-03-11 14:42:39,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1337 transitions. [2021-03-11 14:42:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:39,237 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:39,237 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:39,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1418 [2021-03-11 14:42:39,237 INFO L428 AbstractCegarLoop]: === Iteration 1420 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:39,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1677984735, now seen corresponding path program 1414 times [2021-03-11 14:42:39,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:39,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806424090] [2021-03-11 14:42:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:39,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:39,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:39,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:39,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:39,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:39,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:39,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:39,422 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:39,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:39,500 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:39,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:39,591 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:39,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:39,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806424090] [2021-03-11 14:42:39,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:39,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:39,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077251376] [2021-03-11 14:42:39,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:39,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:39,674 INFO L87 Difference]: Start difference. First operand 396 states and 1337 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:39,914 INFO L93 Difference]: Finished difference Result 632 states and 1817 transitions. [2021-03-11 14:42:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:39,919 INFO L225 Difference]: With dead ends: 632 [2021-03-11 14:42:39,919 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:42:39,919 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 475.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:42:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 388. [2021-03-11 14:42:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4031007751937983) internal successors, (1317), 387 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1317 transitions. [2021-03-11 14:42:39,926 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:39,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:39,926 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1317 transitions. [2021-03-11 14:42:39,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1317 transitions. [2021-03-11 14:42:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:39,926 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:39,926 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:39,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1419 [2021-03-11 14:42:39,927 INFO L428 AbstractCegarLoop]: === Iteration 1421 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:39,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:39,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1069233205, now seen corresponding path program 1415 times [2021-03-11 14:42:39,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:39,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376091096] [2021-03-11 14:42:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:39,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:39,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:39,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:39,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:39,989 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:39,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:40,060 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:40,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:40,116 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:40,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:40,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:40,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:40,314 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:40,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:40,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376091096] [2021-03-11 14:42:40,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:40,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:40,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398747932] [2021-03-11 14:42:40,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:40,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:40,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:40,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:40,395 INFO L87 Difference]: Start difference. First operand 388 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:40,698 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:40,723 INFO L93 Difference]: Finished difference Result 623 states and 1799 transitions. [2021-03-11 14:42:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:40,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:40,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:40,727 INFO L225 Difference]: With dead ends: 623 [2021-03-11 14:42:40,727 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:42:40,727 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 565.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:40,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:42:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 393. [2021-03-11 14:42:40,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.38265306122449) internal successors, (1326), 392 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1326 transitions. [2021-03-11 14:42:40,733 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1326 transitions. Word has length 22 [2021-03-11 14:42:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:40,733 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1326 transitions. [2021-03-11 14:42:40,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:40,733 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1326 transitions. [2021-03-11 14:42:40,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:40,734 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:40,734 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:40,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1420 [2021-03-11 14:42:40,734 INFO L428 AbstractCegarLoop]: === Iteration 1422 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash -3852175, now seen corresponding path program 1416 times [2021-03-11 14:42:40,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:40,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576035398] [2021-03-11 14:42:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:40,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:40,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:40,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:40,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:40,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:40,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:40,774 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:42:40,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:42:40,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:40,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:40,853 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:40,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:40,929 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:40,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:41,029 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:41,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:41,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576035398] [2021-03-11 14:42:41,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:41,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:41,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795904124] [2021-03-11 14:42:41,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:41,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:41,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:41,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:41,126 INFO L87 Difference]: Start difference. First operand 393 states and 1326 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:41,469 INFO L93 Difference]: Finished difference Result 619 states and 1788 transitions. [2021-03-11 14:42:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:41,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:41,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:41,475 INFO L225 Difference]: With dead ends: 619 [2021-03-11 14:42:41,475 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:42:41,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 446.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:42:41,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 379. [2021-03-11 14:42:41,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4365079365079363) internal successors, (1299), 378 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1299 transitions. [2021-03-11 14:42:41,481 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1299 transitions. Word has length 22 [2021-03-11 14:42:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:41,482 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1299 transitions. [2021-03-11 14:42:41,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1299 transitions. [2021-03-11 14:42:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:41,482 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:41,482 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:41,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1421 [2021-03-11 14:42:41,482 INFO L428 AbstractCegarLoop]: === Iteration 1423 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash 411713145, now seen corresponding path program 1417 times [2021-03-11 14:42:41,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:41,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072408911] [2021-03-11 14:42:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:41,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:41,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:41,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:41,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:41,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:41,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:41,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:41,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:41,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:41,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:41,652 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:41,769 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:41,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:41,861 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:41,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:41,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072408911] [2021-03-11 14:42:41,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:41,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:41,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492447689] [2021-03-11 14:42:41,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:41,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:41,936 INFO L87 Difference]: Start difference. First operand 379 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:42,233 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:42,263 INFO L93 Difference]: Finished difference Result 614 states and 1802 transitions. [2021-03-11 14:42:42,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:42,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:42,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:42,269 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:42:42,269 INFO L226 Difference]: Without dead ends: 604 [2021-03-11 14:42:42,269 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 557.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-03-11 14:42:42,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 387. [2021-03-11 14:42:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4326424870466323) internal successors, (1325), 386 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1325 transitions. [2021-03-11 14:42:42,275 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1325 transitions. Word has length 22 [2021-03-11 14:42:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:42,275 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1325 transitions. [2021-03-11 14:42:42,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1325 transitions. [2021-03-11 14:42:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:42,276 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:42,276 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:42,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1422 [2021-03-11 14:42:42,276 INFO L428 AbstractCegarLoop]: === Iteration 1424 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2022654103, now seen corresponding path program 1418 times [2021-03-11 14:42:42,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:42,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825535852] [2021-03-11 14:42:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:42,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:42,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:42,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:42,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:42,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:42,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:42,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:42,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:42,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:42,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:42,439 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:42,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:42,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:42,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:42,642 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:42,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:42,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825535852] [2021-03-11 14:42:42,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:42,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:42,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994552327] [2021-03-11 14:42:42,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:42,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:42,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:42,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:42,725 INFO L87 Difference]: Start difference. First operand 387 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:42,998 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:43,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:43,032 INFO L93 Difference]: Finished difference Result 618 states and 1808 transitions. [2021-03-11 14:42:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:43,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:43,038 INFO L225 Difference]: With dead ends: 618 [2021-03-11 14:42:43,038 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:42:43,038 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 548.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:43,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:42:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 385. [2021-03-11 14:42:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4375) internal successors, (1320), 384 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:43,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1320 transitions. [2021-03-11 14:42:43,044 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1320 transitions. Word has length 22 [2021-03-11 14:42:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:43,044 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1320 transitions. [2021-03-11 14:42:43,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:43,044 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1320 transitions. [2021-03-11 14:42:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:43,045 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:43,045 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:43,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1423 [2021-03-11 14:42:43,045 INFO L428 AbstractCegarLoop]: === Iteration 1425 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:43,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:43,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1270123765, now seen corresponding path program 1419 times [2021-03-11 14:42:43,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:43,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464757978] [2021-03-11 14:42:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:43,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:43,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:43,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:43,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:43,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:43,224 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:43,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:43,300 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:43,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:43,394 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:43,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:43,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464757978] [2021-03-11 14:42:43,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:43,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:43,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111775276] [2021-03-11 14:42:43,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:43,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:43,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:43,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:43,479 INFO L87 Difference]: Start difference. First operand 385 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:43,741 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:43,766 INFO L93 Difference]: Finished difference Result 612 states and 1796 transitions. [2021-03-11 14:42:43,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:43,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:43,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:43,771 INFO L225 Difference]: With dead ends: 612 [2021-03-11 14:42:43,772 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:42:43,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 532.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:43,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:42:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 387. [2021-03-11 14:42:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4274611398963732) internal successors, (1323), 386 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:43,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1323 transitions. [2021-03-11 14:42:43,778 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1323 transitions. Word has length 22 [2021-03-11 14:42:43,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:43,778 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1323 transitions. [2021-03-11 14:42:43,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1323 transitions. [2021-03-11 14:42:43,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:43,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:43,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:43,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1424 [2021-03-11 14:42:43,779 INFO L428 AbstractCegarLoop]: === Iteration 1426 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:43,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:43,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1949132375, now seen corresponding path program 1420 times [2021-03-11 14:42:43,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:43,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918878304] [2021-03-11 14:42:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:43,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:43,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:43,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:43,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:43,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:43,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:43,935 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:43,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:44,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:44,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:44,059 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:44,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:44,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918878304] [2021-03-11 14:42:44,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:44,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231595103] [2021-03-11 14:42:44,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:44,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:44,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:44,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:44,112 INFO L87 Difference]: Start difference. First operand 387 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:44,333 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:44,370 INFO L93 Difference]: Finished difference Result 614 states and 1798 transitions. [2021-03-11 14:42:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:44,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:44,375 INFO L225 Difference]: With dead ends: 614 [2021-03-11 14:42:44,375 INFO L226 Difference]: Without dead ends: 600 [2021-03-11 14:42:44,375 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-03-11 14:42:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 385. [2021-03-11 14:42:44,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.4322916666666665) internal successors, (1318), 384 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1318 transitions. [2021-03-11 14:42:44,382 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1318 transitions. Word has length 22 [2021-03-11 14:42:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:44,382 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1318 transitions. [2021-03-11 14:42:44,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1318 transitions. [2021-03-11 14:42:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:44,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:44,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:44,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1425 [2021-03-11 14:42:44,383 INFO L428 AbstractCegarLoop]: === Iteration 1427 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:44,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:44,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1259620661, now seen corresponding path program 1421 times [2021-03-11 14:42:44,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:44,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329652135] [2021-03-11 14:42:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:44,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:44,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:44,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:44,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:44,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:44,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:44,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:44,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:44,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:44,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:44,549 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:44,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:44,622 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:44,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:44,711 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:44,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:44,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329652135] [2021-03-11 14:42:44,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:44,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:44,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101721426] [2021-03-11 14:42:44,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:44,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:44,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:44,793 INFO L87 Difference]: Start difference. First operand 385 states and 1318 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,082 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:45,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:45,110 INFO L93 Difference]: Finished difference Result 622 states and 1816 transitions. [2021-03-11 14:42:45,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:45,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:45,115 INFO L225 Difference]: With dead ends: 622 [2021-03-11 14:42:45,115 INFO L226 Difference]: Without dead ends: 608 [2021-03-11 14:42:45,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 501.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-11 14:42:45,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 389. [2021-03-11 14:42:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4149484536082473) internal successors, (1325), 388 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1325 transitions. [2021-03-11 14:42:45,122 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1325 transitions. Word has length 22 [2021-03-11 14:42:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:45,122 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1325 transitions. [2021-03-11 14:42:45,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1325 transitions. [2021-03-11 14:42:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:45,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:45,122 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:45,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1426 [2021-03-11 14:42:45,122 INFO L428 AbstractCegarLoop]: === Iteration 1428 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 348694521, now seen corresponding path program 1422 times [2021-03-11 14:42:45,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:45,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081241803] [2021-03-11 14:42:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:45,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:45,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:45,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:45,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:45,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-11 14:42:45,274 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:45,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:45,349 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:45,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:45,444 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:45,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:45,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081241803] [2021-03-11 14:42:45,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:45,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:45,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438716534] [2021-03-11 14:42:45,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:45,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:45,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:45,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:45,526 INFO L87 Difference]: Start difference. First operand 389 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,814 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:45,851 INFO L93 Difference]: Finished difference Result 620 states and 1808 transitions. [2021-03-11 14:42:45,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:45,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:45,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:45,856 INFO L225 Difference]: With dead ends: 620 [2021-03-11 14:42:45,856 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:42:45,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 511.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:45,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:42:45,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 383. [2021-03-11 14:42:45,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.43717277486911) internal successors, (1313), 382 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1313 transitions. [2021-03-11 14:42:45,863 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1313 transitions. Word has length 22 [2021-03-11 14:42:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:45,863 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1313 transitions. [2021-03-11 14:42:45,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1313 transitions. [2021-03-11 14:42:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:45,863 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:45,863 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:45,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1427 [2021-03-11 14:42:45,863 INFO L428 AbstractCegarLoop]: === Iteration 1429 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:45,864 INFO L82 PathProgramCache]: Analyzing trace with hash -31185995, now seen corresponding path program 1423 times [2021-03-11 14:42:45,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:45,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940084296] [2021-03-11 14:42:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:45,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:45,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:45,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:45,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:45,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:45,968 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:45,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:46,068 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:46,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:46,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:46,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:46,278 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:46,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:46,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940084296] [2021-03-11 14:42:46,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:46,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:46,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755401418] [2021-03-11 14:42:46,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:46,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:46,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:46,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:46,365 INFO L87 Difference]: Start difference. First operand 383 states and 1313 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:46,631 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:46,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:46,661 INFO L93 Difference]: Finished difference Result 621 states and 1811 transitions. [2021-03-11 14:42:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:46,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:46,666 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:42:46,666 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:42:46,666 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 602.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:42:46,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 389. [2021-03-11 14:42:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.422680412371134) internal successors, (1328), 388 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1328 transitions. [2021-03-11 14:42:46,673 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1328 transitions. Word has length 22 [2021-03-11 14:42:46,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:46,673 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1328 transitions. [2021-03-11 14:42:46,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:46,673 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1328 transitions. [2021-03-11 14:42:46,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:46,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:46,673 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:46,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1428 [2021-03-11 14:42:46,673 INFO L428 AbstractCegarLoop]: === Iteration 1430 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:46,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1579754963, now seen corresponding path program 1424 times [2021-03-11 14:42:46,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:46,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624392452] [2021-03-11 14:42:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:46,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:46,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:46,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:46,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:46,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:46,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:46,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:46,775 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:46,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:46,868 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:42:46,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:42:46,987 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:46,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:47,074 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:47,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:47,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624392452] [2021-03-11 14:42:47,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:47,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:47,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718635910] [2021-03-11 14:42:47,158 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:47,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:47,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:47,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:47,158 INFO L87 Difference]: Start difference. First operand 389 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:47,435 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:47,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:47,469 INFO L93 Difference]: Finished difference Result 625 states and 1817 transitions. [2021-03-11 14:42:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:47,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:47,475 INFO L225 Difference]: With dead ends: 625 [2021-03-11 14:42:47,475 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:42:47,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 582.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:42:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 387. [2021-03-11 14:42:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4274611398963732) internal successors, (1323), 386 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1323 transitions. [2021-03-11 14:42:47,482 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1323 transitions. Word has length 22 [2021-03-11 14:42:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:47,482 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1323 transitions. [2021-03-11 14:42:47,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1323 transitions. [2021-03-11 14:42:47,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:47,482 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:47,482 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:47,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1429 [2021-03-11 14:42:47,483 INFO L428 AbstractCegarLoop]: === Iteration 1431 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:47,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:47,483 INFO L82 PathProgramCache]: Analyzing trace with hash -618931317, now seen corresponding path program 1425 times [2021-03-11 14:42:47,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:47,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822268298] [2021-03-11 14:42:47,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:47,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:47,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:47,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:47,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:47,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:47,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:47,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:47,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:47,592 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:47,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:47,694 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:47,816 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:47,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:47,907 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:47,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:47,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822268298] [2021-03-11 14:42:47,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:47,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:47,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351891710] [2021-03-11 14:42:47,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:47,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:47,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:47,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:47,989 INFO L87 Difference]: Start difference. First operand 387 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:48,308 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:48,337 INFO L93 Difference]: Finished difference Result 624 states and 1814 transitions. [2021-03-11 14:42:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:48,341 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:48,342 INFO L225 Difference]: With dead ends: 624 [2021-03-11 14:42:48,342 INFO L226 Difference]: Without dead ends: 614 [2021-03-11 14:42:48,342 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 604.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-03-11 14:42:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 390. [2021-03-11 14:42:48,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.4138817480719794) internal successors, (1328), 389 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1328 transitions. [2021-03-11 14:42:48,349 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1328 transitions. Word has length 22 [2021-03-11 14:42:48,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:48,349 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 1328 transitions. [2021-03-11 14:42:48,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:48,349 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1328 transitions. [2021-03-11 14:42:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:48,349 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:48,349 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:48,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1430 [2021-03-11 14:42:48,349 INFO L428 AbstractCegarLoop]: === Iteration 1432 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:48,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1527239443, now seen corresponding path program 1426 times [2021-03-11 14:42:48,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:48,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217647993] [2021-03-11 14:42:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:48,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:48,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:48,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:48,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:48,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:48,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:48,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:48,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:48,454 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:48,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:48,551 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:48,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:48,668 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:48,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:48,753 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:48,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:48,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217647993] [2021-03-11 14:42:48,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:48,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358027460] [2021-03-11 14:42:48,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:48,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:48,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:48,833 INFO L87 Difference]: Start difference. First operand 390 states and 1328 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:49,099 INFO L93 Difference]: Finished difference Result 630 states and 1823 transitions. [2021-03-11 14:42:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:49,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:49,105 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:42:49,105 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:42:49,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 530.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:42:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 387. [2021-03-11 14:42:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 3.4196891191709846) internal successors, (1320), 386 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 1320 transitions. [2021-03-11 14:42:49,112 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 1320 transitions. Word has length 22 [2021-03-11 14:42:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:49,112 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 1320 transitions. [2021-03-11 14:42:49,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 1320 transitions. [2021-03-11 14:42:49,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:49,112 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:49,112 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:49,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1431 [2021-03-11 14:42:49,113 INFO L428 AbstractCegarLoop]: === Iteration 1433 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:49,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:49,113 INFO L82 PathProgramCache]: Analyzing trace with hash -608428213, now seen corresponding path program 1427 times [2021-03-11 14:42:49,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:49,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399869103] [2021-03-11 14:42:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:49,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:49,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:49,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:49,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:49,217 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:49,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:49,315 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:49,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:49,389 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:49,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:49,467 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:49,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:49,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:49,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399869103] [2021-03-11 14:42:49,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:49,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:49,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928406282] [2021-03-11 14:42:49,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:49,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:49,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:49,521 INFO L87 Difference]: Start difference. First operand 387 states and 1320 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,719 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:49,750 INFO L93 Difference]: Finished difference Result 637 states and 1840 transitions. [2021-03-11 14:42:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:49,756 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:42:49,756 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:42:49,756 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 484.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:42:49,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 395. [2021-03-11 14:42:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 3.3857868020304567) internal successors, (1334), 394 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 1334 transitions. [2021-03-11 14:42:49,763 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 1334 transitions. Word has length 22 [2021-03-11 14:42:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:49,763 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 1334 transitions. [2021-03-11 14:42:49,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 1334 transitions. [2021-03-11 14:42:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:49,764 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:49,764 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:49,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1432 [2021-03-11 14:42:49,764 INFO L428 AbstractCegarLoop]: === Iteration 1434 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:49,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:49,764 INFO L82 PathProgramCache]: Analyzing trace with hash -73198411, now seen corresponding path program 1428 times [2021-03-11 14:42:49,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:49,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325002036] [2021-03-11 14:42:49,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:49,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:49,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:49,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:49,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:49,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:49,871 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:49,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:49,974 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:49,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:50,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:50,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:50,142 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:50,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:50,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325002036] [2021-03-11 14:42:50,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:50,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:50,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638426827] [2021-03-11 14:42:50,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:50,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:50,230 INFO L87 Difference]: Start difference. First operand 395 states and 1334 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:50,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:50,477 INFO L93 Difference]: Finished difference Result 639 states and 1837 transitions. [2021-03-11 14:42:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:50,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:50,482 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:42:50,482 INFO L226 Difference]: Without dead ends: 611 [2021-03-11 14:42:50,482 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 510.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:50,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-03-11 14:42:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 383. [2021-03-11 14:42:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.426701570680628) internal successors, (1309), 382 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1309 transitions. [2021-03-11 14:42:50,488 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1309 transitions. Word has length 22 [2021-03-11 14:42:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:50,488 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1309 transitions. [2021-03-11 14:42:50,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1309 transitions. [2021-03-11 14:42:50,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:50,489 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:50,489 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:50,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1433 [2021-03-11 14:42:50,489 INFO L428 AbstractCegarLoop]: === Iteration 1435 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:50,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1984607733, now seen corresponding path program 1429 times [2021-03-11 14:42:50,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:50,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812239105] [2021-03-11 14:42:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:50,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:50,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:50,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:50,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:50,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:50,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:50,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:50,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:50,596 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:50,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:50,690 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:50,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:50,761 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:50,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:50,852 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:50,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:50,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812239105] [2021-03-11 14:42:50,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:50,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:50,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586626803] [2021-03-11 14:42:50,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:50,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:50,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:50,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:50,934 INFO L87 Difference]: Start difference. First operand 383 states and 1309 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:51,256 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:51,287 INFO L93 Difference]: Finished difference Result 613 states and 1790 transitions. [2021-03-11 14:42:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:51,292 INFO L225 Difference]: With dead ends: 613 [2021-03-11 14:42:51,292 INFO L226 Difference]: Without dead ends: 603 [2021-03-11 14:42:51,292 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 541.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:51,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-03-11 14:42:51,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 388. [2021-03-11 14:42:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 3.4160206718346253) internal successors, (1322), 387 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1322 transitions. [2021-03-11 14:42:51,298 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:51,298 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 1322 transitions. [2021-03-11 14:42:51,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1322 transitions. [2021-03-11 14:42:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:51,299 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:51,299 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:51,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1434 [2021-03-11 14:42:51,299 INFO L428 AbstractCegarLoop]: === Iteration 1436 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash 908896577, now seen corresponding path program 1430 times [2021-03-11 14:42:51,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:51,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551496917] [2021-03-11 14:42:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:51,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:51,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:51,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:51,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:51,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:51,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:51,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:51,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:51,401 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:51,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:51,492 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:51,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:51,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:51,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:51,649 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:51,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:51,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551496917] [2021-03-11 14:42:51,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:51,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:51,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444811289] [2021-03-11 14:42:51,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:51,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:51,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:51,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:51,733 INFO L87 Difference]: Start difference. First operand 388 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,013 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:52,046 INFO L93 Difference]: Finished difference Result 615 states and 1792 transitions. [2021-03-11 14:42:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:52,051 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:42:52,051 INFO L226 Difference]: Without dead ends: 601 [2021-03-11 14:42:52,051 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 539.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:52,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2021-03-11 14:42:52,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 386. [2021-03-11 14:42:52,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.4207792207792207) internal successors, (1317), 385 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1317 transitions. [2021-03-11 14:42:52,058 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1317 transitions. Word has length 22 [2021-03-11 14:42:52,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:52,058 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1317 transitions. [2021-03-11 14:42:52,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,058 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1317 transitions. [2021-03-11 14:42:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:52,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:52,059 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:52,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1435 [2021-03-11 14:42:52,059 INFO L428 AbstractCegarLoop]: === Iteration 1437 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:52,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:52,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1216267975, now seen corresponding path program 1431 times [2021-03-11 14:42:52,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:52,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685615174] [2021-03-11 14:42:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:52,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:52,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:52,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:52,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:52,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:52,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:52,260 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:52,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:52,385 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:42:52,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:52,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:52,481 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:52,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:52,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685615174] [2021-03-11 14:42:52,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:52,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:52,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907625359] [2021-03-11 14:42:52,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:52,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:52,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:52,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:52,566 INFO L87 Difference]: Start difference. First operand 386 states and 1317 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,903 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:52,937 INFO L93 Difference]: Finished difference Result 615 states and 1790 transitions. [2021-03-11 14:42:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:52,942 INFO L225 Difference]: With dead ends: 615 [2021-03-11 14:42:52,942 INFO L226 Difference]: Without dead ends: 605 [2021-03-11 14:42:52,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 620.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:52,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-03-11 14:42:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 389. [2021-03-11 14:42:52,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4072164948453607) internal successors, (1322), 388 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1322 transitions. [2021-03-11 14:42:52,949 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:52,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:52,949 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1322 transitions. [2021-03-11 14:42:52,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:52,949 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1322 transitions. [2021-03-11 14:42:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:52,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:52,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:52,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1436 [2021-03-11 14:42:52,950 INFO L428 AbstractCegarLoop]: === Iteration 1438 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:52,950 INFO L82 PathProgramCache]: Analyzing trace with hash 929902785, now seen corresponding path program 1432 times [2021-03-11 14:42:52,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:52,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912839558] [2021-03-11 14:42:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:52,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:52,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:52,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:52,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:53,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:53,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:53,055 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:53,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:53,147 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:53,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:53,268 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:53,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:53,357 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:53,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:53,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912839558] [2021-03-11 14:42:53,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:53,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:53,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544279844] [2021-03-11 14:42:53,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:53,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:53,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:53,444 INFO L87 Difference]: Start difference. First operand 389 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:53,734 INFO L93 Difference]: Finished difference Result 621 states and 1799 transitions. [2021-03-11 14:42:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:53,739 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:42:53,739 INFO L226 Difference]: Without dead ends: 602 [2021-03-11 14:42:53,739 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 537.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-03-11 14:42:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 386. [2021-03-11 14:42:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 3.412987012987013) internal successors, (1314), 385 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1314 transitions. [2021-03-11 14:42:53,746 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1314 transitions. Word has length 22 [2021-03-11 14:42:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:53,746 INFO L480 AbstractCegarLoop]: Abstraction has 386 states and 1314 transitions. [2021-03-11 14:42:53,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1314 transitions. [2021-03-11 14:42:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:53,746 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:53,746 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:53,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1437 [2021-03-11 14:42:53,746 INFO L428 AbstractCegarLoop]: === Iteration 1439 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1279286599, now seen corresponding path program 1433 times [2021-03-11 14:42:53,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:53,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667274146] [2021-03-11 14:42:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:53,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:53,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:53,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:53,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:53,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:53,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:53,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:53,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:53,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:53,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:53,936 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:54,058 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:54,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:54,147 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:54,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:54,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667274146] [2021-03-11 14:42:54,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:54,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:54,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469791949] [2021-03-11 14:42:54,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:54,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:54,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:54,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:54,234 INFO L87 Difference]: Start difference. First operand 386 states and 1314 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:54,527 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:54,558 INFO L93 Difference]: Finished difference Result 621 states and 1801 transitions. [2021-03-11 14:42:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:54,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:54,563 INFO L225 Difference]: With dead ends: 621 [2021-03-11 14:42:54,563 INFO L226 Difference]: Without dead ends: 609 [2021-03-11 14:42:54,564 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 595.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-03-11 14:42:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 391. [2021-03-11 14:42:54,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 3.3923076923076922) internal successors, (1323), 390 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:54,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1323 transitions. [2021-03-11 14:42:54,570 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1323 transitions. Word has length 22 [2021-03-11 14:42:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:54,570 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 1323 transitions. [2021-03-11 14:42:54,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1323 transitions. [2021-03-11 14:42:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:54,571 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:54,571 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:54,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1438 [2021-03-11 14:42:54,571 INFO L428 AbstractCegarLoop]: === Iteration 1440 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1942595317, now seen corresponding path program 1434 times [2021-03-11 14:42:54,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:54,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482772843] [2021-03-11 14:42:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:54,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:54,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:54,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:54,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:54,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:54,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:54,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:54,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:54,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:42:54,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:42:54,787 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:54,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:54,916 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-03-11 14:42:54,919 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:55,015 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:55,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:55,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482772843] [2021-03-11 14:42:55,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:55,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:55,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943523683] [2021-03-11 14:42:55,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:55,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:55,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:55,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:55,102 INFO L87 Difference]: Start difference. First operand 391 states and 1323 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:55,357 INFO L93 Difference]: Finished difference Result 617 states and 1790 transitions. [2021-03-11 14:42:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:55,359 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:55,360 INFO L225 Difference]: With dead ends: 617 [2021-03-11 14:42:55,360 INFO L226 Difference]: Without dead ends: 593 [2021-03-11 14:42:55,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 544.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:55,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-03-11 14:42:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 383. [2021-03-11 14:42:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.418848167539267) internal successors, (1306), 382 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1306 transitions. [2021-03-11 14:42:55,367 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1306 transitions. Word has length 22 [2021-03-11 14:42:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:55,367 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1306 transitions. [2021-03-11 14:42:55,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1306 transitions. [2021-03-11 14:42:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:55,367 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:55,367 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:55,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1439 [2021-03-11 14:42:55,367 INFO L428 AbstractCegarLoop]: === Iteration 1441 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:55,368 INFO L82 PathProgramCache]: Analyzing trace with hash -373822381, now seen corresponding path program 1435 times [2021-03-11 14:42:55,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:55,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437348174] [2021-03-11 14:42:55,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:55,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:55,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:55,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:55,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:55,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:55,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:55,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:55,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:55,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:55,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:55,478 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:55,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:55,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:55,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:55,640 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:55,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:55,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437348174] [2021-03-11 14:42:55,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:55,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:55,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187579346] [2021-03-11 14:42:55,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:55,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:55,723 INFO L87 Difference]: Start difference. First operand 383 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,041 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:56,074 INFO L93 Difference]: Finished difference Result 637 states and 1846 transitions. [2021-03-11 14:42:56,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:56,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:56,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:56,079 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:42:56,080 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:42:56,080 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 470.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:42:56,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 393. [2021-03-11 14:42:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 3.4005102040816326) internal successors, (1333), 392 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 1333 transitions. [2021-03-11 14:42:56,086 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 1333 transitions. Word has length 22 [2021-03-11 14:42:56,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:56,087 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 1333 transitions. [2021-03-11 14:42:56,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 1333 transitions. [2021-03-11 14:42:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:56,087 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:56,087 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:56,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1440 [2021-03-11 14:42:56,087 INFO L428 AbstractCegarLoop]: === Iteration 1442 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1234492801, now seen corresponding path program 1436 times [2021-03-11 14:42:56,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:56,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334054950] [2021-03-11 14:42:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:56,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:56,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:56,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:56,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:56,201 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:56,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:56,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:42:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:42:56,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:56,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:56,433 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:56,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:56,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334054950] [2021-03-11 14:42:56,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:56,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:56,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308410594] [2021-03-11 14:42:56,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:56,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:56,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:56,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:56,524 INFO L87 Difference]: Start difference. First operand 393 states and 1333 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,799 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:56,826 INFO L93 Difference]: Finished difference Result 635 states and 1838 transitions. [2021-03-11 14:42:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:56,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:56,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:56,832 INFO L225 Difference]: With dead ends: 635 [2021-03-11 14:42:56,832 INFO L226 Difference]: Without dead ends: 619 [2021-03-11 14:42:56,832 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 543.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:56,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-03-11 14:42:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 389. [2021-03-11 14:42:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.4072164948453607) internal successors, (1322), 388 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1322 transitions. [2021-03-11 14:42:56,839 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1322 transitions. Word has length 22 [2021-03-11 14:42:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:56,839 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1322 transitions. [2021-03-11 14:42:56,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1322 transitions. [2021-03-11 14:42:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:56,840 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:56,840 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:56,840 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1441 [2021-03-11 14:42:56,840 INFO L428 AbstractCegarLoop]: === Iteration 1443 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:56,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:56,840 INFO L82 PathProgramCache]: Analyzing trace with hash 720269207, now seen corresponding path program 1437 times [2021-03-11 14:42:56,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:56,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608985019] [2021-03-11 14:42:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:56,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:56,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:56,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:56,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:56,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:56,951 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:56,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:57,011 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:57,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:57,088 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:57,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:57,179 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:57,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:57,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608985019] [2021-03-11 14:42:57,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:57,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:57,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43193957] [2021-03-11 14:42:57,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:57,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:57,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:57,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:57,265 INFO L87 Difference]: Start difference. First operand 389 states and 1322 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:57,534 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:42:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:57,560 INFO L93 Difference]: Finished difference Result 637 states and 1838 transitions. [2021-03-11 14:42:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:57,565 INFO L225 Difference]: With dead ends: 637 [2021-03-11 14:42:57,565 INFO L226 Difference]: Without dead ends: 623 [2021-03-11 14:42:57,565 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 528.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2021-03-11 14:42:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 397. [2021-03-11 14:42:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 3.3737373737373737) internal successors, (1336), 396 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1336 transitions. [2021-03-11 14:42:57,572 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1336 transitions. Word has length 22 [2021-03-11 14:42:57,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:57,572 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 1336 transitions. [2021-03-11 14:42:57,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1336 transitions. [2021-03-11 14:42:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:57,572 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:57,572 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:57,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1442 [2021-03-11 14:42:57,573 INFO L428 AbstractCegarLoop]: === Iteration 1444 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:57,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1255499009, now seen corresponding path program 1438 times [2021-03-11 14:42:57,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:57,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339745712] [2021-03-11 14:42:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:57,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:57,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:57,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:57,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:57,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:57,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:57,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:57,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:57,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:57,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:57,742 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:42:57,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:42:57,823 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:57,917 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:57,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:57,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339745712] [2021-03-11 14:42:57,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:57,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:57,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035179532] [2021-03-11 14:42:57,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:57,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:57,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:57,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:57,998 INFO L87 Difference]: Start difference. First operand 397 states and 1336 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:58,265 INFO L93 Difference]: Finished difference Result 639 states and 1835 transitions. [2021-03-11 14:42:58,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:58,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:58,270 INFO L225 Difference]: With dead ends: 639 [2021-03-11 14:42:58,270 INFO L226 Difference]: Without dead ends: 615 [2021-03-11 14:42:58,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 466.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-03-11 14:42:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 389. [2021-03-11 14:42:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 3.3917525773195876) internal successors, (1316), 388 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 1316 transitions. [2021-03-11 14:42:58,277 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 1316 transitions. Word has length 22 [2021-03-11 14:42:58,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:58,277 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 1316 transitions. [2021-03-11 14:42:58,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:58,277 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 1316 transitions. [2021-03-11 14:42:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:58,277 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:58,278 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:58,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1443 [2021-03-11 14:42:58,278 INFO L428 AbstractCegarLoop]: === Iteration 1445 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:58,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:58,278 INFO L82 PathProgramCache]: Analyzing trace with hash 646747479, now seen corresponding path program 1439 times [2021-03-11 14:42:58,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:58,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260554103] [2021-03-11 14:42:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:58,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:58,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:58,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:58,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:58,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:58,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:58,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:58,383 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:58,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:58,442 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:58,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:58,563 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:42:58,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:42:58,658 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:58,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:58,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260554103] [2021-03-11 14:42:58,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:58,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:58,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372895113] [2021-03-11 14:42:58,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:58,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:58,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:58,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:58,745 INFO L87 Difference]: Start difference. First operand 389 states and 1316 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,072 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:42:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:59,112 INFO L93 Difference]: Finished difference Result 630 states and 1817 transitions. [2021-03-11 14:42:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:59,118 INFO L225 Difference]: With dead ends: 630 [2021-03-11 14:42:59,118 INFO L226 Difference]: Without dead ends: 618 [2021-03-11 14:42:59,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 572.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-03-11 14:42:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 394. [2021-03-11 14:42:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.371501272264631) internal successors, (1325), 393 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1325 transitions. [2021-03-11 14:42:59,124 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1325 transitions. Word has length 22 [2021-03-11 14:42:59,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:59,124 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 1325 transitions. [2021-03-11 14:42:59,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1325 transitions. [2021-03-11 14:42:59,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:59,125 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:59,125 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:59,125 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1444 [2021-03-11 14:42:59,125 INFO L428 AbstractCegarLoop]: === Iteration 1446 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:59,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:59,125 INFO L82 PathProgramCache]: Analyzing trace with hash -426337901, now seen corresponding path program 1440 times [2021-03-11 14:42:59,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:59,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656186557] [2021-03-11 14:42:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:59,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:59,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:59,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:42:59,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:42:59,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:42:59,291 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:42:59,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:42:59,411 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:42:59,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:42:59,504 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:42:59,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:42:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:42:59,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656186557] [2021-03-11 14:42:59,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:42:59,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:42:59,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180027154] [2021-03-11 14:42:59,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:42:59,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:42:59,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:42:59,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:42:59,587 INFO L87 Difference]: Start difference. First operand 394 states and 1325 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:42:59,891 INFO L93 Difference]: Finished difference Result 626 states and 1806 transitions. [2021-03-11 14:42:59,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:42:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:42:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:42:59,897 INFO L225 Difference]: With dead ends: 626 [2021-03-11 14:42:59,897 INFO L226 Difference]: Without dead ends: 589 [2021-03-11 14:42:59,897 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 508.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:42:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-03-11 14:42:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 373. [2021-03-11 14:42:59,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.456989247311828) internal successors, (1286), 372 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1286 transitions. [2021-03-11 14:42:59,904 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1286 transitions. Word has length 22 [2021-03-11 14:42:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:42:59,904 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1286 transitions. [2021-03-11 14:42:59,904 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:42:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1286 transitions. [2021-03-11 14:42:59,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:42:59,904 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:42:59,904 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:42:59,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1445 [2021-03-11 14:42:59,904 INFO L428 AbstractCegarLoop]: === Iteration 1447 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:42:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:42:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash 868160799, now seen corresponding path program 1441 times [2021-03-11 14:42:59,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:42:59,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633481614] [2021-03-11 14:42:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:42:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:42:59,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:42:59,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:42:59,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:42:59,936 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:42:59,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:42:59,993 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:42:59,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:00,068 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:00,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:00,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:00,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:00,231 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:00,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:00,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:00,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:00,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633481614] [2021-03-11 14:43:00,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:00,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:00,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667048963] [2021-03-11 14:43:00,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:00,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:00,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:00,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:00,398 INFO L87 Difference]: Start difference. First operand 373 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:00,737 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:00,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:00,766 INFO L93 Difference]: Finished difference Result 563 states and 1663 transitions. [2021-03-11 14:43:00,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:00,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:00,772 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:43:00,772 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:43:00,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 601.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:00,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:43:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 378. [2021-03-11 14:43:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4509283819628647) internal successors, (1301), 377 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1301 transitions. [2021-03-11 14:43:00,779 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1301 transitions. Word has length 22 [2021-03-11 14:43:00,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:00,779 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1301 transitions. [2021-03-11 14:43:00,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:00,779 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1301 transitions. [2021-03-11 14:43:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:00,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:00,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:00,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1446 [2021-03-11 14:43:00,779 INFO L428 AbstractCegarLoop]: === Iteration 1448 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1022652941, now seen corresponding path program 1442 times [2021-03-11 14:43:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:00,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203108752] [2021-03-11 14:43:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:00,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:00,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:00,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:00,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:00,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:00,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:00,863 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:00,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:00,922 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:00,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:00,978 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:00,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:01,025 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:01,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:01,084 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:01,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:01,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203108752] [2021-03-11 14:43:01,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:01,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:01,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731253470] [2021-03-11 14:43:01,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:01,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:01,157 INFO L87 Difference]: Start difference. First operand 378 states and 1301 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:01,535 INFO L93 Difference]: Finished difference Result 561 states and 1658 transitions. [2021-03-11 14:43:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:01,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:01,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:01,541 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:43:01,541 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:43:01,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 438.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:01,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:43:01,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2021-03-11 14:43:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4547872340425534) internal successors, (1299), 376 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:01,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1299 transitions. [2021-03-11 14:43:01,548 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1299 transitions. Word has length 22 [2021-03-11 14:43:01,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:01,548 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1299 transitions. [2021-03-11 14:43:01,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:01,548 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1299 transitions. [2021-03-11 14:43:01,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:01,548 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:01,548 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:01,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1447 [2021-03-11 14:43:01,548 INFO L428 AbstractCegarLoop]: === Iteration 1449 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:01,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1374507065, now seen corresponding path program 1443 times [2021-03-11 14:43:01,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:01,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931138603] [2021-03-11 14:43:01,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:01,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:01,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:01,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:01,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:01,581 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:01,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:01,636 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:01,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:01,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:01,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:01,796 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:01,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:01,916 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:01,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:02,013 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:02,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:02,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931138603] [2021-03-11 14:43:02,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:02,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:02,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873339144] [2021-03-11 14:43:02,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:02,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:02,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:02,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:02,105 INFO L87 Difference]: Start difference. First operand 377 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:02,473 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:02,501 INFO L93 Difference]: Finished difference Result 573 states and 1683 transitions. [2021-03-11 14:43:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:02,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:02,507 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:43:02,507 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:43:02,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 658.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:02,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:43:02,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 381. [2021-03-11 14:43:02,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4368421052631577) internal successors, (1306), 380 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:02,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1306 transitions. [2021-03-11 14:43:02,514 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1306 transitions. Word has length 22 [2021-03-11 14:43:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:02,514 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1306 transitions. [2021-03-11 14:43:02,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1306 transitions. [2021-03-11 14:43:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:02,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:02,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:02,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1448 [2021-03-11 14:43:02,514 INFO L428 AbstractCegarLoop]: === Iteration 1450 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:02,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:02,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1447814477, now seen corresponding path program 1444 times [2021-03-11 14:43:02,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:02,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022943500] [2021-03-11 14:43:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:02,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:02,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:02,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:02,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:02,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:02,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:02,612 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:02,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:02,683 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:02,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:02,777 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:02,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:02,898 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:02,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:02,989 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:02,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:03,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022943500] [2021-03-11 14:43:03,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:03,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:03,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417204410] [2021-03-11 14:43:03,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:03,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:03,077 INFO L87 Difference]: Start difference. First operand 381 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:03,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:03,464 INFO L93 Difference]: Finished difference Result 578 states and 1689 transitions. [2021-03-11 14:43:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:03,469 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:03,470 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:43:03,470 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:03,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 595.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 377. [2021-03-11 14:43:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.449468085106383) internal successors, (1297), 376 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:03,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1297 transitions. [2021-03-11 14:43:03,476 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:03,476 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1297 transitions. [2021-03-11 14:43:03,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1297 transitions. [2021-03-11 14:43:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:03,477 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:03,477 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:03,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1449 [2021-03-11 14:43:03,477 INFO L428 AbstractCegarLoop]: === Iteration 1451 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:03,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:03,477 INFO L82 PathProgramCache]: Analyzing trace with hash -71438647, now seen corresponding path program 1445 times [2021-03-11 14:43:03,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:03,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152617486] [2021-03-11 14:43:03,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:03,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:03,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:03,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:03,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:03,509 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:03,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:03,562 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:03,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:03,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:03,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:03,725 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:03,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:03,828 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:03,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:03,922 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:03,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:04,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152617486] [2021-03-11 14:43:04,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:04,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:04,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344137673] [2021-03-11 14:43:04,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:04,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:04,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:04,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:04,009 INFO L87 Difference]: Start difference. First operand 377 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:04,372 INFO L93 Difference]: Finished difference Result 567 states and 1667 transitions. [2021-03-11 14:43:04,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:04,377 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:43:04,377 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:04,377 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 573.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 379. [2021-03-11 14:43:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.439153439153439) internal successors, (1300), 378 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1300 transitions. [2021-03-11 14:43:04,383 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1300 transitions. Word has length 22 [2021-03-11 14:43:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:04,383 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1300 transitions. [2021-03-11 14:43:04,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:04,384 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1300 transitions. [2021-03-11 14:43:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:04,384 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:04,384 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:04,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1450 [2021-03-11 14:43:04,384 INFO L428 AbstractCegarLoop]: === Iteration 1452 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -609294225, now seen corresponding path program 1446 times [2021-03-11 14:43:04,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:04,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581840326] [2021-03-11 14:43:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:04,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:04,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:04,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:04,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:04,416 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:04,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:04,467 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:04,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:04,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:04,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:04,620 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:04,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:04,722 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:04,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:04,808 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:04,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:04,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581840326] [2021-03-11 14:43:04,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:04,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:04,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979306099] [2021-03-11 14:43:04,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:04,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:04,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:04,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:04,889 INFO L87 Difference]: Start difference. First operand 379 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:05,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:05,288 INFO L93 Difference]: Finished difference Result 574 states and 1679 transitions. [2021-03-11 14:43:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:05,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:05,293 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:43:05,293 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:43:05,294 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 548.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:05,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:43:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 375. [2021-03-11 14:43:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4545454545454546) internal successors, (1292), 374 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:05,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1292 transitions. [2021-03-11 14:43:05,300 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:05,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:05,300 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1292 transitions. [2021-03-11 14:43:05,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:05,300 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1292 transitions. [2021-03-11 14:43:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:05,300 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:05,300 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:05,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1451 [2021-03-11 14:43:05,300 INFO L428 AbstractCegarLoop]: === Iteration 1453 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:05,301 INFO L82 PathProgramCache]: Analyzing trace with hash 829159481, now seen corresponding path program 1447 times [2021-03-11 14:43:05,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:05,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41763749] [2021-03-11 14:43:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:05,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:05,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:05,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:05,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:05,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:05,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:05,385 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:05,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:05,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:05,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:05,518 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:05,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:05,596 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:05,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:05,686 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:05,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41763749] [2021-03-11 14:43:05,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:05,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:05,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845235266] [2021-03-11 14:43:05,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:05,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:05,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:05,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:05,773 INFO L87 Difference]: Start difference. First operand 375 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:06,141 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:06,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:06,170 INFO L93 Difference]: Finished difference Result 553 states and 1640 transitions. [2021-03-11 14:43:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:06,175 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:43:06,175 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:43:06,175 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 577.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:06,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:43:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 377. [2021-03-11 14:43:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4468085106382977) internal successors, (1296), 376 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1296 transitions. [2021-03-11 14:43:06,182 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1296 transitions. Word has length 22 [2021-03-11 14:43:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:06,182 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1296 transitions. [2021-03-11 14:43:06,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1296 transitions. [2021-03-11 14:43:06,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:06,182 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:06,182 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:06,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1452 [2021-03-11 14:43:06,182 INFO L428 AbstractCegarLoop]: === Iteration 1454 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:06,183 INFO L82 PathProgramCache]: Analyzing trace with hash 983651623, now seen corresponding path program 1448 times [2021-03-11 14:43:06,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:06,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543981625] [2021-03-11 14:43:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:06,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:06,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:06,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:06,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:06,214 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:06,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:06,264 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:06,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:06,330 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:06,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:06,388 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:06,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:06,459 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:06,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:06,549 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:06,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:06,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543981625] [2021-03-11 14:43:06,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:06,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:06,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172053858] [2021-03-11 14:43:06,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:06,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:06,634 INFO L87 Difference]: Start difference. First operand 377 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:06,997 INFO L93 Difference]: Finished difference Result 551 states and 1635 transitions. [2021-03-11 14:43:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:07,003 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:43:07,003 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:43:07,003 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 492.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:43:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 376. [2021-03-11 14:43:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4506666666666668) internal successors, (1294), 375 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1294 transitions. [2021-03-11 14:43:07,009 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:07,010 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1294 transitions. [2021-03-11 14:43:07,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:07,010 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1294 transitions. [2021-03-11 14:43:07,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:07,010 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:07,010 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:07,010 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1453 [2021-03-11 14:43:07,010 INFO L428 AbstractCegarLoop]: === Iteration 1455 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:07,011 INFO L82 PathProgramCache]: Analyzing trace with hash -771278373, now seen corresponding path program 1449 times [2021-03-11 14:43:07,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:07,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579450831] [2021-03-11 14:43:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:07,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:07,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:07,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:07,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:07,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:07,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:07,099 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:07,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:07,174 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:07,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:07,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:07,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:07,316 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:07,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:07,378 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:07,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:07,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579450831] [2021-03-11 14:43:07,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:07,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:07,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071101832] [2021-03-11 14:43:07,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:07,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:07,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:07,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:07,436 INFO L87 Difference]: Start difference. First operand 376 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:07,790 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:07,821 INFO L93 Difference]: Finished difference Result 555 states and 1644 transitions. [2021-03-11 14:43:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:07,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:07,827 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:43:07,827 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:43:07,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 535.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:43:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 378. [2021-03-11 14:43:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.440318302387268) internal successors, (1297), 377 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1297 transitions. [2021-03-11 14:43:07,834 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:07,834 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1297 transitions. [2021-03-11 14:43:07,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1297 transitions. [2021-03-11 14:43:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:07,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:07,834 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:07,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1454 [2021-03-11 14:43:07,835 INFO L428 AbstractCegarLoop]: === Iteration 1456 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:07,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:07,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1273819925, now seen corresponding path program 1450 times [2021-03-11 14:43:07,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:07,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94425383] [2021-03-11 14:43:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:07,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:07,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:07,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:07,865 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:07,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:07,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:07,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:07,994 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:08,061 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:08,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:08,147 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:08,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:08,248 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:08,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:08,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:08,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94425383] [2021-03-11 14:43:08,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:08,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:08,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317598848] [2021-03-11 14:43:08,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:08,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:08,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:08,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:08,341 INFO L87 Difference]: Start difference. First operand 378 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:08,738 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:08,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:08,776 INFO L93 Difference]: Finished difference Result 554 states and 1640 transitions. [2021-03-11 14:43:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:08,781 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:43:08,781 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:43:08,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 602.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:43:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 376. [2021-03-11 14:43:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.448) internal successors, (1293), 375 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1293 transitions. [2021-03-11 14:43:08,787 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1293 transitions. Word has length 22 [2021-03-11 14:43:08,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:08,787 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1293 transitions. [2021-03-11 14:43:08,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1293 transitions. [2021-03-11 14:43:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:08,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:08,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:08,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1455 [2021-03-11 14:43:08,788 INFO L428 AbstractCegarLoop]: === Iteration 1457 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:08,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2077743211, now seen corresponding path program 1451 times [2021-03-11 14:43:08,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:08,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199554785] [2021-03-11 14:43:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:08,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:08,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:08,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:08,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:08,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:08,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:08,864 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:08,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:08,934 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:08,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:08,996 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:08,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:09,077 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:09,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:09,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:09,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:09,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199554785] [2021-03-11 14:43:09,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:09,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:09,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131183908] [2021-03-11 14:43:09,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:09,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:09,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:09,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:09,260 INFO L87 Difference]: Start difference. First operand 376 states and 1293 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:09,609 INFO L93 Difference]: Finished difference Result 550 states and 1632 transitions. [2021-03-11 14:43:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:09,615 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:43:09,615 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:43:09,615 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 510.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:43:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 377. [2021-03-11 14:43:09,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4414893617021276) internal successors, (1294), 376 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1294 transitions. [2021-03-11 14:43:09,621 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:09,621 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1294 transitions. [2021-03-11 14:43:09,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1294 transitions. [2021-03-11 14:43:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:09,622 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:09,622 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:09,622 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1456 [2021-03-11 14:43:09,622 INFO L428 AbstractCegarLoop]: === Iteration 1458 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:09,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:09,622 INFO L82 PathProgramCache]: Analyzing trace with hash -606283127, now seen corresponding path program 1452 times [2021-03-11 14:43:09,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:09,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029082442] [2021-03-11 14:43:09,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:09,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:09,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:09,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:09,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:09,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:09,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:09,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:09,777 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:09,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:09,839 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:09,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:09,916 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:09,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:10,014 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:10,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:10,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029082442] [2021-03-11 14:43:10,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:10,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:10,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698807200] [2021-03-11 14:43:10,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:10,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:10,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:10,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:10,105 INFO L87 Difference]: Start difference. First operand 377 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:10,528 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:10,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:10,569 INFO L93 Difference]: Finished difference Result 551 states and 1633 transitions. [2021-03-11 14:43:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:10,575 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:43:10,575 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:43:10,576 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 594.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:10,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:43:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 375. [2021-03-11 14:43:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4518716577540105) internal successors, (1291), 374 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1291 transitions. [2021-03-11 14:43:10,582 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1291 transitions. Word has length 22 [2021-03-11 14:43:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:10,582 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1291 transitions. [2021-03-11 14:43:10,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1291 transitions. [2021-03-11 14:43:10,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:10,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:10,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:10,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1457 [2021-03-11 14:43:10,583 INFO L428 AbstractCegarLoop]: === Iteration 1459 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:10,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:10,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2040553985, now seen corresponding path program 1453 times [2021-03-11 14:43:10,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:10,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841486062] [2021-03-11 14:43:10,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:10,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:10,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:10,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:10,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:10,616 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:10,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:10,672 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:10,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:10,745 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:10,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:10,840 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:10,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:10,919 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:10,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:11,009 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:11,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:11,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841486062] [2021-03-11 14:43:11,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:11,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:11,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871430557] [2021-03-11 14:43:11,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:11,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:11,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:11,105 INFO L87 Difference]: Start difference. First operand 375 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:11,512 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:11,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:11,546 INFO L93 Difference]: Finished difference Result 569 states and 1677 transitions. [2021-03-11 14:43:11,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:11,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:11,553 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:43:11,553 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:11,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 634.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:11,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 380. [2021-03-11 14:43:11,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.440633245382586) internal successors, (1304), 379 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:11,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1304 transitions. [2021-03-11 14:43:11,563 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1304 transitions. Word has length 22 [2021-03-11 14:43:11,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:11,563 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1304 transitions. [2021-03-11 14:43:11,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1304 transitions. [2021-03-11 14:43:11,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:11,564 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:11,564 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:11,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1458 [2021-03-11 14:43:11,564 INFO L428 AbstractCegarLoop]: === Iteration 1460 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1538012433, now seen corresponding path program 1454 times [2021-03-11 14:43:11,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:11,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985775342] [2021-03-11 14:43:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:11,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:11,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:11,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:11,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:11,600 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:11,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:11,657 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:11,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:11,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:11,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:11,824 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:11,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:11,900 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:11,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:11,971 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:11,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:12,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985775342] [2021-03-11 14:43:12,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:12,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:12,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957871330] [2021-03-11 14:43:12,026 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:12,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:12,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:12,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:12,026 INFO L87 Difference]: Start difference. First operand 380 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:12,372 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:12,411 INFO L93 Difference]: Finished difference Result 568 states and 1673 transitions. [2021-03-11 14:43:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:12,417 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:43:12,417 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:43:12,417 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 581.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:43:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 378. [2021-03-11 14:43:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4456233421750664) internal successors, (1299), 377 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1299 transitions. [2021-03-11 14:43:12,424 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1299 transitions. Word has length 22 [2021-03-11 14:43:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:12,424 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1299 transitions. [2021-03-11 14:43:12,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1299 transitions. [2021-03-11 14:43:12,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:12,425 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:12,425 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:12,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1459 [2021-03-11 14:43:12,425 INFO L428 AbstractCegarLoop]: === Iteration 1461 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:12,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash -147629191, now seen corresponding path program 1455 times [2021-03-11 14:43:12,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:12,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177173470] [2021-03-11 14:43:12,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:12,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:12,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:12,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:12,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:12,460 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:12,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:12,522 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:12,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:12,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:12,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:12,702 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:12,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:12,832 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:43:12,836 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:12,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:12,939 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:12,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:13,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177173470] [2021-03-11 14:43:13,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:13,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:13,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024408535] [2021-03-11 14:43:13,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:13,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:13,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:13,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:13,036 INFO L87 Difference]: Start difference. First operand 378 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:13,391 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:13,425 INFO L93 Difference]: Finished difference Result 577 states and 1691 transitions. [2021-03-11 14:43:13,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:13,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:13,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:13,431 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:43:13,431 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:43:13,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 721.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:43:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 382. [2021-03-11 14:43:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4278215223097113) internal successors, (1306), 381 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1306 transitions. [2021-03-11 14:43:13,438 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1306 transitions. Word has length 22 [2021-03-11 14:43:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:13,438 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1306 transitions. [2021-03-11 14:43:13,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1306 transitions. [2021-03-11 14:43:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:13,438 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:13,438 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:13,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1460 [2021-03-11 14:43:13,438 INFO L428 AbstractCegarLoop]: === Iteration 1462 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:13,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash -74321779, now seen corresponding path program 1456 times [2021-03-11 14:43:13,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:13,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392296907] [2021-03-11 14:43:13,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:13,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:13,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:13,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:13,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:13,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:13,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:13,533 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:13,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:13,594 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:13,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:13,687 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:13,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:13,803 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:13,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:13,902 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:13,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:13,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392296907] [2021-03-11 14:43:13,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:13,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:13,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103344105] [2021-03-11 14:43:13,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:13,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:13,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:13,991 INFO L87 Difference]: Start difference. First operand 382 states and 1306 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:14,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:14,383 INFO L93 Difference]: Finished difference Result 582 states and 1697 transitions. [2021-03-11 14:43:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:14,389 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:43:14,389 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:43:14,389 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 596.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:14,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:43:14,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 378. [2021-03-11 14:43:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4376657824933687) internal successors, (1296), 377 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1296 transitions. [2021-03-11 14:43:14,396 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1296 transitions. Word has length 22 [2021-03-11 14:43:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:14,396 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1296 transitions. [2021-03-11 14:43:14,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1296 transitions. [2021-03-11 14:43:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:14,396 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:14,396 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:14,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1461 [2021-03-11 14:43:14,396 INFO L428 AbstractCegarLoop]: === Iteration 1463 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:14,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:14,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1665917553, now seen corresponding path program 1457 times [2021-03-11 14:43:14,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:14,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314729227] [2021-03-11 14:43:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:14,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:14,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:14,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:14,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:14,429 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:14,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:14,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:14,552 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:14,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:14,652 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:14,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:14,784 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:43:14,788 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:14,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:14,886 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:14,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:14,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314729227] [2021-03-11 14:43:14,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:14,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:14,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219525869] [2021-03-11 14:43:14,980 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:14,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:14,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:14,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:14,980 INFO L87 Difference]: Start difference. First operand 378 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:15,400 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:15,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:15,430 INFO L93 Difference]: Finished difference Result 574 states and 1681 transitions. [2021-03-11 14:43:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:15,435 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:43:15,435 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:43:15,435 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 684.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:43:15,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 381. [2021-03-11 14:43:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4236842105263157) internal successors, (1301), 380 states have internal predecessors, (1301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1301 transitions. [2021-03-11 14:43:15,441 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1301 transitions. Word has length 22 [2021-03-11 14:43:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:15,441 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1301 transitions. [2021-03-11 14:43:15,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1301 transitions. [2021-03-11 14:43:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:15,442 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:15,442 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:15,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1462 [2021-03-11 14:43:15,442 INFO L428 AbstractCegarLoop]: === Iteration 1464 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:15,442 INFO L82 PathProgramCache]: Analyzing trace with hash -349760249, now seen corresponding path program 1458 times [2021-03-11 14:43:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:15,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194759377] [2021-03-11 14:43:15,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:15,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:15,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:15,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:15,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:15,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:15,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:15,527 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:15,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:15,597 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:15,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:15,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:15,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:15,826 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:43:15,830 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:15,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:15,930 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:15,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:16,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194759377] [2021-03-11 14:43:16,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:16,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:16,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980617411] [2021-03-11 14:43:16,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:16,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:16,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:16,021 INFO L87 Difference]: Start difference. First operand 381 states and 1301 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:16,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:16,352 INFO L93 Difference]: Finished difference Result 580 states and 1690 transitions. [2021-03-11 14:43:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:16,358 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:43:16,358 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:16,359 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 628.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 375. [2021-03-11 14:43:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.446524064171123) internal successors, (1289), 374 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1289 transitions. [2021-03-11 14:43:16,365 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1289 transitions. Word has length 22 [2021-03-11 14:43:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:16,365 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1289 transitions. [2021-03-11 14:43:16,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1289 transitions. [2021-03-11 14:43:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:16,366 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:16,366 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:16,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1463 [2021-03-11 14:43:16,366 INFO L428 AbstractCegarLoop]: === Iteration 1465 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:16,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:16,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1774324945, now seen corresponding path program 1459 times [2021-03-11 14:43:16,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:16,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620393921] [2021-03-11 14:43:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:16,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:16,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:16,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:16,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:16,399 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:16,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:16,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:16,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:16,541 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:16,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:16,653 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:16,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:16,731 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:16,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:16,830 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:16,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:16,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:16,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620393921] [2021-03-11 14:43:16,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:16,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:16,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895661573] [2021-03-11 14:43:16,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:16,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:16,922 INFO L87 Difference]: Start difference. First operand 375 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:17,285 INFO L93 Difference]: Finished difference Result 558 states and 1647 transitions. [2021-03-11 14:43:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:17,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:17,290 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:43:17,290 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:43:17,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 596.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:43:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 378. [2021-03-11 14:43:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4376657824933687) internal successors, (1296), 377 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1296 transitions. [2021-03-11 14:43:17,296 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1296 transitions. Word has length 22 [2021-03-11 14:43:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:17,296 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1296 transitions. [2021-03-11 14:43:17,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1296 transitions. [2021-03-11 14:43:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:17,297 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:17,297 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:17,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1464 [2021-03-11 14:43:17,297 INFO L428 AbstractCegarLoop]: === Iteration 1466 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash -163383987, now seen corresponding path program 1460 times [2021-03-11 14:43:17,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:17,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546524356] [2021-03-11 14:43:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:17,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:17,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:17,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:17,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:17,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:17,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:17,380 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:17,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:17,456 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:17,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:17,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:17,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:17,657 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:17,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:17,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:17,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:17,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546524356] [2021-03-11 14:43:17,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:17,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:17,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532890472] [2021-03-11 14:43:17,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:17,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:17,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:17,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:17,852 INFO L87 Difference]: Start difference. First operand 378 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:18,258 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:18,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:18,295 INFO L93 Difference]: Finished difference Result 559 states and 1648 transitions. [2021-03-11 14:43:18,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:18,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:18,301 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:43:18,301 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:43:18,301 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 668.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:43:18,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 377. [2021-03-11 14:43:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4414893617021276) internal successors, (1294), 376 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:18,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1294 transitions. [2021-03-11 14:43:18,308 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:18,308 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1294 transitions. [2021-03-11 14:43:18,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1294 transitions. [2021-03-11 14:43:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:18,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:18,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:18,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1465 [2021-03-11 14:43:18,308 INFO L428 AbstractCegarLoop]: === Iteration 1467 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:18,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash 332459175, now seen corresponding path program 1461 times [2021-03-11 14:43:18,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:18,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430976958] [2021-03-11 14:43:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:18,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:18,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:18,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:18,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:18,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:18,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:18,397 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:18,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:18,469 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:18,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:18,578 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:18,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:18,686 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:18,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:18,786 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:18,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:18,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430976958] [2021-03-11 14:43:18,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:18,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:18,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921014915] [2021-03-11 14:43:18,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:18,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:18,879 INFO L87 Difference]: Start difference. First operand 377 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:19,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:19,143 INFO L93 Difference]: Finished difference Result 565 states and 1659 transitions. [2021-03-11 14:43:19,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:19,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:19,147 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:43:19,147 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:43:19,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 586.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:43:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 379. [2021-03-11 14:43:19,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.431216931216931) internal successors, (1297), 378 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1297 transitions. [2021-03-11 14:43:19,153 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:19,153 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1297 transitions. [2021-03-11 14:43:19,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:19,153 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1297 transitions. [2021-03-11 14:43:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:19,153 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:19,153 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:19,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1466 [2021-03-11 14:43:19,154 INFO L428 AbstractCegarLoop]: === Iteration 1468 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:19,154 INFO L82 PathProgramCache]: Analyzing trace with hash -205396403, now seen corresponding path program 1462 times [2021-03-11 14:43:19,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:19,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966976958] [2021-03-11 14:43:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:19,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:19,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:19,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:19,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:19,179 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:19,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:19,236 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:19,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:19,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:19,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:19,413 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:19,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:19,515 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:19,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:19,616 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:19,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:19,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966976958] [2021-03-11 14:43:19,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:19,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:19,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778128371] [2021-03-11 14:43:19,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:19,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:19,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:19,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:19,709 INFO L87 Difference]: Start difference. First operand 379 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:20,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:20,105 INFO L93 Difference]: Finished difference Result 572 states and 1671 transitions. [2021-03-11 14:43:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:20,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:20,111 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:43:20,111 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:43:20,111 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 606.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:20,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:43:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 377. [2021-03-11 14:43:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4361702127659575) internal successors, (1292), 376 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1292 transitions. [2021-03-11 14:43:20,117 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:20,118 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1292 transitions. [2021-03-11 14:43:20,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:20,118 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1292 transitions. [2021-03-11 14:43:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:20,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:20,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:20,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1467 [2021-03-11 14:43:20,118 INFO L428 AbstractCegarLoop]: === Iteration 1469 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:20,119 INFO L82 PathProgramCache]: Analyzing trace with hash 342962279, now seen corresponding path program 1463 times [2021-03-11 14:43:20,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:20,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231757144] [2021-03-11 14:43:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:20,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:20,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:20,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:20,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:20,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:20,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:20,209 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:20,289 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:20,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:20,413 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-03-11 14:43:20,417 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:20,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:20,551 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:43:20,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:20,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:20,658 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:20,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:20,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231757144] [2021-03-11 14:43:20,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:20,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:20,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304643952] [2021-03-11 14:43:20,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:20,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:20,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:20,752 INFO L87 Difference]: Start difference. First operand 377 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:21,168 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:21,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:21,200 INFO L93 Difference]: Finished difference Result 568 states and 1664 transitions. [2021-03-11 14:43:21,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:21,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:21,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:21,206 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:43:21,207 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:21,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 743.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:21,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 380. [2021-03-11 14:43:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4221635883905015) internal successors, (1297), 379 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:21,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1297 transitions. [2021-03-11 14:43:21,213 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:21,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:21,213 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1297 transitions. [2021-03-11 14:43:21,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1297 transitions. [2021-03-11 14:43:21,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:21,214 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:21,214 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:21,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1468 [2021-03-11 14:43:21,214 INFO L428 AbstractCegarLoop]: === Iteration 1470 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:21,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:21,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1805834257, now seen corresponding path program 1464 times [2021-03-11 14:43:21,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:21,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210828496] [2021-03-11 14:43:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:21,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:21,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:21,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:21,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:21,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:21,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:21,305 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:21,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:21,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:21,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:21,492 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:21,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:21,619 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:43:21,622 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:21,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:21,713 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:21,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:21,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210828496] [2021-03-11 14:43:21,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:21,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:21,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508951450] [2021-03-11 14:43:21,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:21,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:21,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:21,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:21,799 INFO L87 Difference]: Start difference. First operand 380 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:22,113 INFO L93 Difference]: Finished difference Result 574 states and 1673 transitions. [2021-03-11 14:43:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:22,119 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:43:22,119 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:43:22,119 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 632.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:43:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 373. [2021-03-11 14:43:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4516129032258065) internal successors, (1284), 372 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:22,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1284 transitions. [2021-03-11 14:43:22,125 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1284 transitions. Word has length 22 [2021-03-11 14:43:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:22,125 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1284 transitions. [2021-03-11 14:43:22,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1284 transitions. [2021-03-11 14:43:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:22,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:22,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:22,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1469 [2021-03-11 14:43:22,126 INFO L428 AbstractCegarLoop]: === Iteration 1471 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:22,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:22,126 INFO L82 PathProgramCache]: Analyzing trace with hash 2141094507, now seen corresponding path program 1465 times [2021-03-11 14:43:22,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:22,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608863901] [2021-03-11 14:43:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:22,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:22,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:22,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:22,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:22,158 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:22,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:22,211 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:22,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:22,291 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:22,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:22,391 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:22,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:22,475 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:22,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:22,574 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:22,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:22,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608863901] [2021-03-11 14:43:22,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:22,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:22,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079629216] [2021-03-11 14:43:22,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:22,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:22,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:22,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:22,677 INFO L87 Difference]: Start difference. First operand 373 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:23,097 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:23,128 INFO L93 Difference]: Finished difference Result 569 states and 1678 transitions. [2021-03-11 14:43:23,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:23,133 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:23,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:23,134 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:43:23,134 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:43:23,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 666.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:23,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:43:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 378. [2021-03-11 14:43:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4456233421750664) internal successors, (1299), 377 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1299 transitions. [2021-03-11 14:43:23,141 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1299 transitions. Word has length 22 [2021-03-11 14:43:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:23,141 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1299 transitions. [2021-03-11 14:43:23,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1299 transitions. [2021-03-11 14:43:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:23,142 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:23,142 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:23,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1470 [2021-03-11 14:43:23,142 INFO L428 AbstractCegarLoop]: === Iteration 1472 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:23,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:23,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1999380647, now seen corresponding path program 1466 times [2021-03-11 14:43:23,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:23,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580591366] [2021-03-11 14:43:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:23,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:23,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:23,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:23,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:23,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:23,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:23,236 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:23,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:23,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:23,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:23,403 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:23,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:23,481 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:23,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:23,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:23,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:23,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580591366] [2021-03-11 14:43:23,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:23,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:23,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868543427] [2021-03-11 14:43:23,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:23,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:23,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:23,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:23,666 INFO L87 Difference]: Start difference. First operand 378 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:24,059 INFO L93 Difference]: Finished difference Result 567 states and 1673 transitions. [2021-03-11 14:43:24,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:24,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:24,065 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:43:24,065 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:43:24,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 569.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:43:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 377. [2021-03-11 14:43:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.449468085106383) internal successors, (1297), 376 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1297 transitions. [2021-03-11 14:43:24,071 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:24,071 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1297 transitions. [2021-03-11 14:43:24,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1297 transitions. [2021-03-11 14:43:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:24,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:24,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:24,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1471 [2021-03-11 14:43:24,072 INFO L428 AbstractCegarLoop]: === Iteration 1473 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1647526523, now seen corresponding path program 1467 times [2021-03-11 14:43:24,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:24,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143610884] [2021-03-11 14:43:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:24,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:24,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:24,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:24,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:24,106 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:24,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:24,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:24,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:24,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:24,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:24,348 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:24,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:24,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:24,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:24,571 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:24,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:24,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143610884] [2021-03-11 14:43:24,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:24,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:24,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448280914] [2021-03-11 14:43:24,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:24,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:24,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:24,668 INFO L87 Difference]: Start difference. First operand 377 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,052 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:25,080 INFO L93 Difference]: Finished difference Result 579 states and 1698 transitions. [2021-03-11 14:43:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:25,086 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:43:25,086 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:43:25,086 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 715.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:43:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 381. [2021-03-11 14:43:25,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.431578947368421) internal successors, (1304), 380 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1304 transitions. [2021-03-11 14:43:25,092 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1304 transitions. Word has length 22 [2021-03-11 14:43:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:25,092 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1304 transitions. [2021-03-11 14:43:25,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1304 transitions. [2021-03-11 14:43:25,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:25,092 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:25,092 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:25,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1472 [2021-03-11 14:43:25,093 INFO L428 AbstractCegarLoop]: === Iteration 1474 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:25,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1574219111, now seen corresponding path program 1468 times [2021-03-11 14:43:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:25,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013184409] [2021-03-11 14:43:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:25,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:25,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:25,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:25,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:25,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:25,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:25,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:25,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:25,257 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:25,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:25,355 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:25,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:25,481 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:25,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:25,582 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:25,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:25,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013184409] [2021-03-11 14:43:25,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:25,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:25,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967781933] [2021-03-11 14:43:25,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:25,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:25,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:25,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:25,649 INFO L87 Difference]: Start difference. First operand 381 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:25,904 INFO L93 Difference]: Finished difference Result 584 states and 1704 transitions. [2021-03-11 14:43:25,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:25,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:25,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:25,910 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:43:25,910 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:43:25,910 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 585.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:25,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:43:25,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 377. [2021-03-11 14:43:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4441489361702127) internal successors, (1295), 376 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1295 transitions. [2021-03-11 14:43:25,916 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1295 transitions. Word has length 22 [2021-03-11 14:43:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:25,916 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1295 transitions. [2021-03-11 14:43:25,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1295 transitions. [2021-03-11 14:43:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:25,917 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:25,917 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:25,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1473 [2021-03-11 14:43:25,917 INFO L428 AbstractCegarLoop]: === Iteration 1475 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:25,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:25,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1201495061, now seen corresponding path program 1469 times [2021-03-11 14:43:25,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:25,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611801669] [2021-03-11 14:43:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:25,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:25,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:25,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:25,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:25,950 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:25,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:26,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:26,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:26,095 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:26,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:26,192 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:26,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:26,305 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:26,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:26,408 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:26,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:26,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:26,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611801669] [2021-03-11 14:43:26,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:26,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:26,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792174105] [2021-03-11 14:43:26,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:26,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:26,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:26,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:26,502 INFO L87 Difference]: Start difference. First operand 377 states and 1295 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:26,890 INFO L93 Difference]: Finished difference Result 573 states and 1682 transitions. [2021-03-11 14:43:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:26,896 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:43:26,896 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:43:26,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 633.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:43:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 379. [2021-03-11 14:43:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.433862433862434) internal successors, (1298), 378 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1298 transitions. [2021-03-11 14:43:26,902 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1298 transitions. Word has length 22 [2021-03-11 14:43:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:26,902 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1298 transitions. [2021-03-11 14:43:26,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1298 transitions. [2021-03-11 14:43:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:26,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:26,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:26,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1474 [2021-03-11 14:43:26,903 INFO L428 AbstractCegarLoop]: === Iteration 1476 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:26,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:26,903 INFO L82 PathProgramCache]: Analyzing trace with hash 663639483, now seen corresponding path program 1470 times [2021-03-11 14:43:26,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:26,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972859633] [2021-03-11 14:43:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:26,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:26,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:26,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:26,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:26,936 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:26,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:26,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:26,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:27,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:27,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:27,167 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:27,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:27,277 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:27,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:27,374 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:27,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:27,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972859633] [2021-03-11 14:43:27,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:27,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:27,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827814617] [2021-03-11 14:43:27,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:27,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:27,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:27,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:27,465 INFO L87 Difference]: Start difference. First operand 379 states and 1298 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:27,869 INFO L93 Difference]: Finished difference Result 580 states and 1694 transitions. [2021-03-11 14:43:27,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:27,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:27,875 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:43:27,875 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:43:27,875 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 612.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:27,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:43:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-03-11 14:43:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.449197860962567) internal successors, (1290), 374 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1290 transitions. [2021-03-11 14:43:27,881 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1290 transitions. Word has length 22 [2021-03-11 14:43:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:27,881 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1290 transitions. [2021-03-11 14:43:27,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1290 transitions. [2021-03-11 14:43:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:27,882 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:27,882 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:27,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1475 [2021-03-11 14:43:27,882 INFO L428 AbstractCegarLoop]: === Iteration 1477 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:27,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:27,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1670737669, now seen corresponding path program 1471 times [2021-03-11 14:43:27,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:27,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753902120] [2021-03-11 14:43:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:27,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:27,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:27,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:27,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:27,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:27,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:27,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:27,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:28,041 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:28,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:28,105 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:28,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:28,188 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:28,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:28,284 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:28,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:28,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753902120] [2021-03-11 14:43:28,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:28,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:28,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660223504] [2021-03-11 14:43:28,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:28,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:28,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:28,376 INFO L87 Difference]: Start difference. First operand 375 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:28,784 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:28,814 INFO L93 Difference]: Finished difference Result 562 states and 1662 transitions. [2021-03-11 14:43:28,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:28,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:28,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:28,820 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:43:28,820 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:43:28,820 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 593.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:28,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:43:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 377. [2021-03-11 14:43:28,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4414893617021276) internal successors, (1294), 376 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1294 transitions. [2021-03-11 14:43:28,826 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:28,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:28,826 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1294 transitions. [2021-03-11 14:43:28,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:28,826 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1294 transitions. [2021-03-11 14:43:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:28,827 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:28,827 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:28,827 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1476 [2021-03-11 14:43:28,827 INFO L428 AbstractCegarLoop]: === Iteration 1478 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:28,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1825229811, now seen corresponding path program 1472 times [2021-03-11 14:43:28,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:28,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068502809] [2021-03-11 14:43:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:28,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:28,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:28,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:28,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:28,859 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:28,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:28,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:28,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:28,995 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:28,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:29,060 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:29,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:29,139 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:29,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:29,240 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:29,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:29,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068502809] [2021-03-11 14:43:29,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:29,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:29,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340251326] [2021-03-11 14:43:29,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:29,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:29,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:29,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:29,333 INFO L87 Difference]: Start difference. First operand 377 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:29,729 INFO L93 Difference]: Finished difference Result 560 states and 1657 transitions. [2021-03-11 14:43:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:29,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:29,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:29,735 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:43:29,735 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:43:29,735 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 554.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:43:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 376. [2021-03-11 14:43:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.445333333333333) internal successors, (1292), 375 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1292 transitions. [2021-03-11 14:43:29,741 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:29,741 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1292 transitions. [2021-03-11 14:43:29,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1292 transitions. [2021-03-11 14:43:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:29,742 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:29,742 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:29,742 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1477 [2021-03-11 14:43:29,742 INFO L428 AbstractCegarLoop]: === Iteration 1479 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1082992347, now seen corresponding path program 1473 times [2021-03-11 14:43:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227139876] [2021-03-11 14:43:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:29,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:29,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:29,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:29,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:29,775 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:29,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:29,834 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:29,916 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:29,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:29,981 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:29,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:30,064 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:30,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:30,165 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:30,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:30,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227139876] [2021-03-11 14:43:30,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:30,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:30,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865750716] [2021-03-11 14:43:30,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:30,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:30,258 INFO L87 Difference]: Start difference. First operand 376 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:30,586 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:30,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:30,613 INFO L93 Difference]: Finished difference Result 567 states and 1673 transitions. [2021-03-11 14:43:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:30,618 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:43:30,618 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:43:30,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 619.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:43:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 379. [2021-03-11 14:43:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.431216931216931) internal successors, (1297), 378 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:30,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1297 transitions. [2021-03-11 14:43:30,625 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1297 transitions. Word has length 22 [2021-03-11 14:43:30,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:30,625 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1297 transitions. [2021-03-11 14:43:30,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1297 transitions. [2021-03-11 14:43:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:30,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:30,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:30,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1478 [2021-03-11 14:43:30,625 INFO L428 AbstractCegarLoop]: === Iteration 1480 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:30,625 INFO L82 PathProgramCache]: Analyzing trace with hash -970633165, now seen corresponding path program 1474 times [2021-03-11 14:43:30,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:30,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429091122] [2021-03-11 14:43:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:30,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:30,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:30,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:30,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:30,658 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:30,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:30,720 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:30,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:30,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:30,863 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:30,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:30,942 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:30,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:31,044 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:31,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:31,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429091122] [2021-03-11 14:43:31,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:31,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:31,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489411518] [2021-03-11 14:43:31,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:31,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:31,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:31,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:31,142 INFO L87 Difference]: Start difference. First operand 379 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:31,460 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:31,511 INFO L93 Difference]: Finished difference Result 568 states and 1672 transitions. [2021-03-11 14:43:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:31,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:31,518 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:43:31,518 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:43:31,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 607.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:43:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 376. [2021-03-11 14:43:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4426666666666668) internal successors, (1291), 375 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1291 transitions. [2021-03-11 14:43:31,525 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1291 transitions. Word has length 22 [2021-03-11 14:43:31,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:31,525 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1291 transitions. [2021-03-11 14:43:31,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1291 transitions. [2021-03-11 14:43:31,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:31,525 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:31,525 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:31,525 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1479 [2021-03-11 14:43:31,526 INFO L428 AbstractCegarLoop]: === Iteration 1481 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:31,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash -362953365, now seen corresponding path program 1475 times [2021-03-11 14:43:31,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:31,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036324007] [2021-03-11 14:43:31,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:31,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:31,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:31,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:31,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:31,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:31,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:31,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:31,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:31,706 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:31,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:31,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:31,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:31,915 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:31,918 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:31,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:32,027 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:32,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:32,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:32,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036324007] [2021-03-11 14:43:32,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:32,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:32,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430310378] [2021-03-11 14:43:32,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:32,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:32,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:32,118 INFO L87 Difference]: Start difference. First operand 376 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:32,532 INFO L93 Difference]: Finished difference Result 561 states and 1658 transitions. [2021-03-11 14:43:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:32,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:32,538 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:43:32,538 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:43:32,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 636.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:32,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:43:32,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 377. [2021-03-11 14:43:32,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4361702127659575) internal successors, (1292), 376 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:32,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1292 transitions. [2021-03-11 14:43:32,545 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:32,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:32,545 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1292 transitions. [2021-03-11 14:43:32,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1292 transitions. [2021-03-11 14:43:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:32,545 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:32,545 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:32,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1480 [2021-03-11 14:43:32,546 INFO L428 AbstractCegarLoop]: === Iteration 1482 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:32,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:32,546 INFO L82 PathProgramCache]: Analyzing trace with hash 172276437, now seen corresponding path program 1476 times [2021-03-11 14:43:32,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:32,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752840842] [2021-03-11 14:43:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:32,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:32,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:32,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:32,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:32,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:32,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:32,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:32,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:32,722 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:32,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:32,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:32,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:32,935 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:32,939 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:32,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:33,038 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:33,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:33,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752840842] [2021-03-11 14:43:33,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:33,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:33,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410945970] [2021-03-11 14:43:33,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:33,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:33,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:33,134 INFO L87 Difference]: Start difference. First operand 377 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:33,558 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:33,613 INFO L93 Difference]: Finished difference Result 564 states and 1663 transitions. [2021-03-11 14:43:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:33,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:33,620 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:43:33,620 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:43:33,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 692.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:43:33,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 375. [2021-03-11 14:43:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.446524064171123) internal successors, (1289), 374 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1289 transitions. [2021-03-11 14:43:33,626 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1289 transitions. Word has length 22 [2021-03-11 14:43:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:33,626 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1289 transitions. [2021-03-11 14:43:33,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1289 transitions. [2021-03-11 14:43:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:33,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:33,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:33,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1481 [2021-03-11 14:43:33,627 INFO L428 AbstractCegarLoop]: === Iteration 1483 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:33,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:33,627 INFO L82 PathProgramCache]: Analyzing trace with hash -400142591, now seen corresponding path program 1477 times [2021-03-11 14:43:33,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:33,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225935729] [2021-03-11 14:43:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:33,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:33,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:33,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:33,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:33,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:33,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:33,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:33,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:33,798 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:33,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:33,903 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:33,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:33,987 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:33,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:34,096 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:34,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:34,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225935729] [2021-03-11 14:43:34,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:34,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:34,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558846269] [2021-03-11 14:43:34,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:34,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:34,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:34,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:34,189 INFO L87 Difference]: Start difference. First operand 375 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:34,623 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:34,658 INFO L93 Difference]: Finished difference Result 584 states and 1716 transitions. [2021-03-11 14:43:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:34,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:34,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:34,664 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:43:34,665 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:43:34,665 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 679.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:34,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:43:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 382. [2021-03-11 14:43:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4330708661417324) internal successors, (1308), 381 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:34,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1308 transitions. [2021-03-11 14:43:34,671 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1308 transitions. Word has length 22 [2021-03-11 14:43:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:34,671 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1308 transitions. [2021-03-11 14:43:34,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1308 transitions. [2021-03-11 14:43:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:34,672 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:34,672 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:34,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1482 [2021-03-11 14:43:34,672 INFO L428 AbstractCegarLoop]: === Iteration 1484 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1841199193, now seen corresponding path program 1478 times [2021-03-11 14:43:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277300002] [2021-03-11 14:43:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:34,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:34,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:34,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:34,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:34,705 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:34,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:34,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:34,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:34,833 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:34,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:34,931 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:34,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:35,012 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:35,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:35,080 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:35,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:35,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277300002] [2021-03-11 14:43:35,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:35,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:35,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461446197] [2021-03-11 14:43:35,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:35,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:35,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:35,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:35,141 INFO L87 Difference]: Start difference. First operand 382 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:35,540 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:35,581 INFO L93 Difference]: Finished difference Result 585 states and 1715 transitions. [2021-03-11 14:43:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:35,588 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:43:35,588 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:43:35,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 594.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:43:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 379. [2021-03-11 14:43:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.439153439153439) internal successors, (1300), 378 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1300 transitions. [2021-03-11 14:43:35,594 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1300 transitions. Word has length 22 [2021-03-11 14:43:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:35,595 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1300 transitions. [2021-03-11 14:43:35,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1300 transitions. [2021-03-11 14:43:35,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:35,595 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:35,595 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:35,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1483 [2021-03-11 14:43:35,595 INFO L428 AbstractCegarLoop]: === Iteration 1485 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:35,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:35,596 INFO L82 PathProgramCache]: Analyzing trace with hash 693948997, now seen corresponding path program 1479 times [2021-03-11 14:43:35,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:35,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884794664] [2021-03-11 14:43:35,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:35,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:35,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:35,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:35,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:35,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:35,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:35,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:35,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:35,785 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:35,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:35,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:35,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:36,036 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:43:36,040 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:36,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:36,142 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:36,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:36,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884794664] [2021-03-11 14:43:36,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:36,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:36,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751568760] [2021-03-11 14:43:36,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:36,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:36,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:36,239 INFO L87 Difference]: Start difference. First operand 379 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:36,555 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:36,583 INFO L93 Difference]: Finished difference Result 589 states and 1722 transitions. [2021-03-11 14:43:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:36,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:36,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:36,589 INFO L225 Difference]: With dead ends: 589 [2021-03-11 14:43:36,589 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:43:36,589 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 740.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:43:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 383. [2021-03-11 14:43:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4214659685863875) internal successors, (1307), 382 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1307 transitions. [2021-03-11 14:43:36,595 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1307 transitions. Word has length 22 [2021-03-11 14:43:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:36,595 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1307 transitions. [2021-03-11 14:43:36,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:36,595 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1307 transitions. [2021-03-11 14:43:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:36,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:36,596 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:36,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1484 [2021-03-11 14:43:36,596 INFO L428 AbstractCegarLoop]: === Iteration 1486 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash 767256409, now seen corresponding path program 1480 times [2021-03-11 14:43:36,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:36,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561985490] [2021-03-11 14:43:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:36,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:36,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:36,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:36,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:36,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:36,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:36,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:36,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:36,765 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:36,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:36,868 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:36,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:36,993 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:36,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:37,093 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:37,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:37,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561985490] [2021-03-11 14:43:37,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:37,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:37,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769971312] [2021-03-11 14:43:37,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:37,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:37,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:37,186 INFO L87 Difference]: Start difference. First operand 383 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:37,592 INFO L93 Difference]: Finished difference Result 594 states and 1728 transitions. [2021-03-11 14:43:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:37,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:37,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:37,598 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:43:37,598 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:43:37,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 640.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:37,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:43:37,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 379. [2021-03-11 14:43:37,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4285714285714284) internal successors, (1296), 378 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1296 transitions. [2021-03-11 14:43:37,604 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1296 transitions. Word has length 22 [2021-03-11 14:43:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:37,604 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1296 transitions. [2021-03-11 14:43:37,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1296 transitions. [2021-03-11 14:43:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:37,605 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:37,605 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:37,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1485 [2021-03-11 14:43:37,605 INFO L428 AbstractCegarLoop]: === Iteration 1487 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:37,605 INFO L82 PathProgramCache]: Analyzing trace with hash -181238331, now seen corresponding path program 1481 times [2021-03-11 14:43:37,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:37,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056657095] [2021-03-11 14:43:37,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:37,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:37,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:37,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:37,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:37,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:37,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:37,699 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:37,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:37,780 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:37,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:37,891 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:37,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:38,019 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:43:38,023 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:38,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:38,119 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:38,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:38,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056657095] [2021-03-11 14:43:38,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:38,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:38,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740404624] [2021-03-11 14:43:38,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:38,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:38,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:38,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:38,208 INFO L87 Difference]: Start difference. First operand 379 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:38,637 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:38,679 INFO L93 Difference]: Finished difference Result 592 states and 1725 transitions. [2021-03-11 14:43:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:38,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:38,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:38,685 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:43:38,685 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:43:38,686 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 724.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:38,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:43:38,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 384. [2021-03-11 14:43:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.4073107049608353) internal successors, (1305), 383 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1305 transitions. [2021-03-11 14:43:38,696 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1305 transitions. Word has length 22 [2021-03-11 14:43:38,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:38,696 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1305 transitions. [2021-03-11 14:43:38,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:38,696 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1305 transitions. [2021-03-11 14:43:38,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:38,697 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:38,697 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:38,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1486 [2021-03-11 14:43:38,697 INFO L428 AbstractCegarLoop]: === Iteration 1488 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1529374977, now seen corresponding path program 1482 times [2021-03-11 14:43:38,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:38,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970921515] [2021-03-11 14:43:38,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:38,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:38,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:38,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:38,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:38,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:38,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:38,784 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:38,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:38,866 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:43:38,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:43:38,978 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:38,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:39,110 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:43:39,113 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:39,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:39,216 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:39,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:39,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970921515] [2021-03-11 14:43:39,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:39,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:39,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85098903] [2021-03-11 14:43:39,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:39,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:39,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:39,313 INFO L87 Difference]: Start difference. First operand 384 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:39,762 INFO L93 Difference]: Finished difference Result 596 states and 1728 transitions. [2021-03-11 14:43:39,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:39,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:39,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:39,768 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:43:39,768 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:43:39,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 665.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:43:39,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 375. [2021-03-11 14:43:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4411764705882355) internal successors, (1287), 374 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1287 transitions. [2021-03-11 14:43:39,775 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1287 transitions. Word has length 22 [2021-03-11 14:43:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:39,775 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1287 transitions. [2021-03-11 14:43:39,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1287 transitions. [2021-03-11 14:43:39,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:39,775 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:39,775 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:39,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1487 [2021-03-11 14:43:39,775 INFO L428 AbstractCegarLoop]: === Iteration 1489 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:39,776 INFO L82 PathProgramCache]: Analyzing trace with hash 79945775, now seen corresponding path program 1483 times [2021-03-11 14:43:39,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:39,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190667356] [2021-03-11 14:43:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:39,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:39,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:39,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:39,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:39,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:39,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:39,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:39,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:39,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:39,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:40,068 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:40,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:40,211 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:40,215 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:40,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:40,325 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:40,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:40,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190667356] [2021-03-11 14:43:40,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:40,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756973110] [2021-03-11 14:43:40,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:40,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:40,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:40,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:40,418 INFO L87 Difference]: Start difference. First operand 375 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:40,703 INFO L93 Difference]: Finished difference Result 570 states and 1676 transitions. [2021-03-11 14:43:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:40,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:40,708 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:43:40,708 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:43:40,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 685.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:43:40,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 378. [2021-03-11 14:43:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4323607427055705) internal successors, (1294), 377 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1294 transitions. [2021-03-11 14:43:40,715 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:40,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:40,715 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1294 transitions. [2021-03-11 14:43:40,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:40,715 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1294 transitions. [2021-03-11 14:43:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:40,715 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:40,715 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:40,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1488 [2021-03-11 14:43:40,716 INFO L428 AbstractCegarLoop]: === Iteration 1490 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash 615175577, now seen corresponding path program 1484 times [2021-03-11 14:43:40,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:40,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30038541] [2021-03-11 14:43:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:40,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:40,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:40,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:40,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:40,747 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:40,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:40,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:40,876 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:40,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:40,997 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:43:41,001 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:41,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:41,142 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:41,146 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:41,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:41,249 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:41,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:41,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30038541] [2021-03-11 14:43:41,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:41,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:41,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329125013] [2021-03-11 14:43:41,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:41,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:41,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:41,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:41,350 INFO L87 Difference]: Start difference. First operand 378 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:41,824 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:41,869 INFO L93 Difference]: Finished difference Result 573 states and 1681 transitions. [2021-03-11 14:43:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:41,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:41,875 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:43:41,875 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:43:41,875 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 757.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:43:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 377. [2021-03-11 14:43:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4361702127659575) internal successors, (1292), 376 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1292 transitions. [2021-03-11 14:43:41,882 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:41,882 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1292 transitions. [2021-03-11 14:43:41,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1292 transitions. [2021-03-11 14:43:41,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:41,883 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:41,883 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:41,883 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1489 [2021-03-11 14:43:41,883 INFO L428 AbstractCegarLoop]: === Iteration 1491 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:41,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:41,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1174037363, now seen corresponding path program 1485 times [2021-03-11 14:43:41,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:41,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931329099] [2021-03-11 14:43:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:41,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:41,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:41,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:41,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:41,928 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:41,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:41,992 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:41,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:42,082 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:42,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:42,202 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:42,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:42,320 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:42,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:42,427 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:42,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:42,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931329099] [2021-03-11 14:43:42,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:42,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:42,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469002857] [2021-03-11 14:43:42,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:42,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:42,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:42,529 INFO L87 Difference]: Start difference. First operand 377 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:42,869 INFO L93 Difference]: Finished difference Result 575 states and 1684 transitions. [2021-03-11 14:43:42,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:42,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:42,874 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:43:42,874 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:43:42,874 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 665.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:42,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:43:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 379. [2021-03-11 14:43:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.425925925925926) internal successors, (1295), 378 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1295 transitions. [2021-03-11 14:43:42,881 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1295 transitions. Word has length 22 [2021-03-11 14:43:42,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:42,881 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1295 transitions. [2021-03-11 14:43:42,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:42,881 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1295 transitions. [2021-03-11 14:43:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:42,881 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:42,881 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:42,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1490 [2021-03-11 14:43:42,881 INFO L428 AbstractCegarLoop]: === Iteration 1492 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:42,882 INFO L82 PathProgramCache]: Analyzing trace with hash 636181785, now seen corresponding path program 1486 times [2021-03-11 14:43:42,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:42,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529536878] [2021-03-11 14:43:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:42,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:42,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:42,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:42,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:42,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:42,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:42,986 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:42,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:43,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:43,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:43,203 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:43,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:43,325 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:43,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:43,436 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:43,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:43,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529536878] [2021-03-11 14:43:43,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:43,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:43,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825212906] [2021-03-11 14:43:43,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:43,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:43,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:43,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:43,543 INFO L87 Difference]: Start difference. First operand 379 states and 1295 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:44,003 INFO L93 Difference]: Finished difference Result 582 states and 1696 transitions. [2021-03-11 14:43:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:44,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:44,009 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:43:44,010 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:43:44,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 714.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:43:44,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 377. [2021-03-11 14:43:44,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4308510638297873) internal successors, (1290), 376 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1290 transitions. [2021-03-11 14:43:44,016 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1290 transitions. Word has length 22 [2021-03-11 14:43:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:44,016 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1290 transitions. [2021-03-11 14:43:44,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1290 transitions. [2021-03-11 14:43:44,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:44,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:44,017 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:44,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1491 [2021-03-11 14:43:44,017 INFO L428 AbstractCegarLoop]: === Iteration 1493 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:44,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1121521843, now seen corresponding path program 1487 times [2021-03-11 14:43:44,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:44,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932747348] [2021-03-11 14:43:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:44,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:44,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:44,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:44,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:44,051 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:44,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:44,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:44,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:44,195 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:44,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:44,310 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:44,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:44,440 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:43:44,443 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:44,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:44,542 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:44,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:44,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932747348] [2021-03-11 14:43:44,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:44,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:44,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894033631] [2021-03-11 14:43:44,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:44,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:44,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:44,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:44,631 INFO L87 Difference]: Start difference. First operand 377 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:45,049 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:45,090 INFO L93 Difference]: Finished difference Result 584 states and 1703 transitions. [2021-03-11 14:43:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:45,096 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:43:45,096 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:43:45,096 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 736.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:43:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 382. [2021-03-11 14:43:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.409448818897638) internal successors, (1299), 381 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1299 transitions. [2021-03-11 14:43:45,103 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1299 transitions. Word has length 22 [2021-03-11 14:43:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:45,103 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1299 transitions. [2021-03-11 14:43:45,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:45,103 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1299 transitions. [2021-03-11 14:43:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:45,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:45,104 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:45,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1492 [2021-03-11 14:43:45,104 INFO L428 AbstractCegarLoop]: === Iteration 1494 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:45,104 INFO L82 PathProgramCache]: Analyzing trace with hash 48436463, now seen corresponding path program 1488 times [2021-03-11 14:43:45,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:45,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211381559] [2021-03-11 14:43:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:45,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:45,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:45,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:45,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:45,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:45,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:45,201 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:43:45,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:43:45,284 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:43:45,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:43:45,404 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:45,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:45,540 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:43:45,543 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:45,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:45,648 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:45,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:45,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211381559] [2021-03-11 14:43:45,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:45,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:45,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685825533] [2021-03-11 14:43:45,747 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:45,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:45,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:45,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:45,748 INFO L87 Difference]: Start difference. First operand 382 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:46,199 INFO L93 Difference]: Finished difference Result 588 states and 1706 transitions. [2021-03-11 14:43:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:46,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:46,206 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:43:46,206 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:43:46,206 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 699.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:43:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 373. [2021-03-11 14:43:46,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.446236559139785) internal successors, (1282), 372 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:46,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1282 transitions. [2021-03-11 14:43:46,213 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1282 transitions. Word has length 22 [2021-03-11 14:43:46,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:46,213 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1282 transitions. [2021-03-11 14:43:46,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:46,213 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1282 transitions. [2021-03-11 14:43:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:46,213 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:46,213 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:46,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1493 [2021-03-11 14:43:46,213 INFO L428 AbstractCegarLoop]: === Iteration 1495 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:46,214 INFO L82 PathProgramCache]: Analyzing trace with hash -867000609, now seen corresponding path program 1489 times [2021-03-11 14:43:46,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:46,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717551213] [2021-03-11 14:43:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:46,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:46,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:46,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:46,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:46,251 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:46,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:46,315 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:46,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:46,369 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:46,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:46,446 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:46,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:46,534 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:46,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:46,637 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:46,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:46,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717551213] [2021-03-11 14:43:46,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:46,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:46,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019290152] [2021-03-11 14:43:46,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:46,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:46,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:46,734 INFO L87 Difference]: Start difference. First operand 373 states and 1282 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,166 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:47,197 INFO L93 Difference]: Finished difference Result 542 states and 1612 transitions. [2021-03-11 14:43:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:47,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:47,203 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:43:47,203 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:43:47,203 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 634.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:43:47,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 376. [2021-03-11 14:43:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.44) internal successors, (1290), 375 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1290 transitions. [2021-03-11 14:43:47,210 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1290 transitions. Word has length 22 [2021-03-11 14:43:47,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:47,210 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1290 transitions. [2021-03-11 14:43:47,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,210 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1290 transitions. [2021-03-11 14:43:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:47,210 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:47,210 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:47,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1494 [2021-03-11 14:43:47,210 INFO L428 AbstractCegarLoop]: === Iteration 1496 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:47,211 INFO L82 PathProgramCache]: Analyzing trace with hash -712508467, now seen corresponding path program 1490 times [2021-03-11 14:43:47,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:47,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125999091] [2021-03-11 14:43:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:47,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:47,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:47,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:47,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:47,243 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:47,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:47,302 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:47,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:47,350 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:47,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:47,403 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:47,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:47,456 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:47,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:47,525 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:47,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:47,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125999091] [2021-03-11 14:43:47,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:47,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:47,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061392959] [2021-03-11 14:43:47,593 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:47,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:47,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:47,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:47,593 INFO L87 Difference]: Start difference. First operand 376 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:47,950 INFO L93 Difference]: Finished difference Result 540 states and 1607 transitions. [2021-03-11 14:43:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:47,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:47,956 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:43:47,956 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:43:47,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 439.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:43:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 375. [2021-03-11 14:43:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.443850267379679) internal successors, (1288), 374 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1288 transitions. [2021-03-11 14:43:47,962 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1288 transitions. Word has length 22 [2021-03-11 14:43:47,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:47,962 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1288 transitions. [2021-03-11 14:43:47,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:47,963 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1288 transitions. [2021-03-11 14:43:47,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:47,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:47,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:47,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1495 [2021-03-11 14:43:47,963 INFO L428 AbstractCegarLoop]: === Iteration 1497 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:47,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1827528833, now seen corresponding path program 1491 times [2021-03-11 14:43:47,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:47,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443549813] [2021-03-11 14:43:47,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:47,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:47,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:47,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:47,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:47,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:48,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:48,059 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:48,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:48,109 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:48,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:48,178 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:48,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:48,275 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:48,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:48,379 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:48,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443549813] [2021-03-11 14:43:48,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:48,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:48,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435146598] [2021-03-11 14:43:48,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:48,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:48,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:48,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:48,480 INFO L87 Difference]: Start difference. First operand 375 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:48,940 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:48,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:48,972 INFO L93 Difference]: Finished difference Result 544 states and 1616 transitions. [2021-03-11 14:43:48,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:48,977 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:48,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:48,979 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:43:48,979 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:43:48,979 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 635.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:43:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 377. [2021-03-11 14:43:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4335106382978724) internal successors, (1291), 376 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1291 transitions. [2021-03-11 14:43:48,985 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1291 transitions. Word has length 22 [2021-03-11 14:43:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:48,985 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1291 transitions. [2021-03-11 14:43:48,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1291 transitions. [2021-03-11 14:43:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:48,986 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:48,986 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:48,986 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1496 [2021-03-11 14:43:48,986 INFO L428 AbstractCegarLoop]: === Iteration 1498 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:48,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:48,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1324987281, now seen corresponding path program 1492 times [2021-03-11 14:43:48,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:48,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167120997] [2021-03-11 14:43:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:48,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:48,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:48,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:48,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:49,021 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:49,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:49,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:49,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:49,139 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:49,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:49,209 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:49,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:49,291 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:49,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:49,395 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:49,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:49,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167120997] [2021-03-11 14:43:49,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:49,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:49,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60424882] [2021-03-11 14:43:49,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:49,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:49,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:49,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:49,489 INFO L87 Difference]: Start difference. First operand 377 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:49,832 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:49,881 INFO L93 Difference]: Finished difference Result 543 states and 1612 transitions. [2021-03-11 14:43:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:49,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:49,888 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:43:49,888 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:43:49,888 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 626.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:49,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:43:49,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 375. [2021-03-11 14:43:49,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4411764705882355) internal successors, (1287), 374 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:49,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1287 transitions. [2021-03-11 14:43:49,895 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1287 transitions. Word has length 22 [2021-03-11 14:43:49,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:49,895 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1287 transitions. [2021-03-11 14:43:49,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1287 transitions. [2021-03-11 14:43:49,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:49,896 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:49,896 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:49,896 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1497 [2021-03-11 14:43:49,896 INFO L428 AbstractCegarLoop]: === Iteration 1499 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:49,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:49,896 INFO L82 PathProgramCache]: Analyzing trace with hash 381583121, now seen corresponding path program 1493 times [2021-03-11 14:43:49,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:49,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827022050] [2021-03-11 14:43:49,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:49,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:49,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:49,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:49,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:49,934 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:49,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:50,000 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:50,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:50,058 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:50,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:50,132 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:50,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:50,224 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:50,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:50,327 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:50,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:50,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827022050] [2021-03-11 14:43:50,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:50,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:50,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436143551] [2021-03-11 14:43:50,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:50,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:50,422 INFO L87 Difference]: Start difference. First operand 375 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:50,679 INFO L93 Difference]: Finished difference Result 539 states and 1604 transitions. [2021-03-11 14:43:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:50,685 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:50,686 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:43:50,687 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:43:50,687 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 572.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:43:50,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 376. [2021-03-11 14:43:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4346666666666668) internal successors, (1288), 375 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1288 transitions. [2021-03-11 14:43:50,693 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1288 transitions. Word has length 22 [2021-03-11 14:43:50,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:50,693 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1288 transitions. [2021-03-11 14:43:50,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1288 transitions. [2021-03-11 14:43:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:50,694 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:50,694 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:50,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1498 [2021-03-11 14:43:50,694 INFO L428 AbstractCegarLoop]: === Iteration 1500 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1992524079, now seen corresponding path program 1494 times [2021-03-11 14:43:50,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:50,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430282995] [2021-03-11 14:43:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:50,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:50,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:50,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:50,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:50,732 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:50,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:50,799 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:50,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:50,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:43:50,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:43:50,928 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:43:50,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:43:51,019 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:51,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:51,129 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:51,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:51,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430282995] [2021-03-11 14:43:51,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:51,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:51,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596779778] [2021-03-11 14:43:51,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:51,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:51,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:51,233 INFO L87 Difference]: Start difference. First operand 376 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:51,606 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:51,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:51,650 INFO L93 Difference]: Finished difference Result 540 states and 1605 transitions. [2021-03-11 14:43:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:51,656 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:43:51,656 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:43:51,656 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 666.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:43:51,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 374. [2021-03-11 14:43:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4450402144772116) internal successors, (1285), 373 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1285 transitions. [2021-03-11 14:43:51,663 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1285 transitions. Word has length 22 [2021-03-11 14:43:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:51,663 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1285 transitions. [2021-03-11 14:43:51,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1285 transitions. [2021-03-11 14:43:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:51,663 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:51,663 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:51,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1499 [2021-03-11 14:43:51,663 INFO L428 AbstractCegarLoop]: === Iteration 1501 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash 461696811, now seen corresponding path program 1495 times [2021-03-11 14:43:51,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:51,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620902785] [2021-03-11 14:43:51,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:51,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:51,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:51,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:51,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:51,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:51,697 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:51,761 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:51,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:51,818 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:51,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:51,889 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:51,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:51,978 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:51,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:52,084 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:52,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:52,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620902785] [2021-03-11 14:43:52,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:52,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:52,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633185287] [2021-03-11 14:43:52,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:52,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:52,186 INFO L87 Difference]: Start difference. First operand 374 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:52,517 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:52,551 INFO L93 Difference]: Finished difference Result 545 states and 1618 transitions. [2021-03-11 14:43:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:52,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:52,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:52,558 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:43:52,558 INFO L226 Difference]: Without dead ends: 534 [2021-03-11 14:43:52,558 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 645.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-03-11 14:43:52,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 376. [2021-03-11 14:43:52,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.437333333333333) internal successors, (1289), 375 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1289 transitions. [2021-03-11 14:43:52,565 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1289 transitions. Word has length 22 [2021-03-11 14:43:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:52,565 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1289 transitions. [2021-03-11 14:43:52,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:52,565 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1289 transitions. [2021-03-11 14:43:52,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:52,566 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:52,566 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:52,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1500 [2021-03-11 14:43:52,566 INFO L428 AbstractCegarLoop]: === Iteration 1502 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash 616188953, now seen corresponding path program 1496 times [2021-03-11 14:43:52,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:52,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930412914] [2021-03-11 14:43:52,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:52,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:52,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:52,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:52,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:52,602 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:52,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:52,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:52,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:52,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:52,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:52,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:52,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:52,882 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:52,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:52,977 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:52,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:53,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930412914] [2021-03-11 14:43:53,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:53,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:53,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885494355] [2021-03-11 14:43:53,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:53,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:53,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:53,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:53,071 INFO L87 Difference]: Start difference. First operand 376 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:53,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:53,426 INFO L93 Difference]: Finished difference Result 543 states and 1613 transitions. [2021-03-11 14:43:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:53,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:53,432 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:43:53,432 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:43:53,432 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 560.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:53,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:43:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 375. [2021-03-11 14:43:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4411764705882355) internal successors, (1287), 374 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1287 transitions. [2021-03-11 14:43:53,439 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1287 transitions. Word has length 22 [2021-03-11 14:43:53,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:53,439 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1287 transitions. [2021-03-11 14:43:53,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1287 transitions. [2021-03-11 14:43:53,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:53,440 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:53,440 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:53,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1501 [2021-03-11 14:43:53,440 INFO L428 AbstractCegarLoop]: === Iteration 1503 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:53,440 INFO L82 PathProgramCache]: Analyzing trace with hash -126048511, now seen corresponding path program 1497 times [2021-03-11 14:43:53,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:53,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504009020] [2021-03-11 14:43:53,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:53,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:53,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:53,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:53,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:53,477 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:53,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:53,584 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:53,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:53,648 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:53,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:53,727 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:53,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:53,826 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:53,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:53,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504009020] [2021-03-11 14:43:53,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:53,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:53,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436585475] [2021-03-11 14:43:53,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:53,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:53,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:53,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:53,929 INFO L87 Difference]: Start difference. First operand 375 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:54,261 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:54,293 INFO L93 Difference]: Finished difference Result 550 states and 1629 transitions. [2021-03-11 14:43:54,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:54,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:54,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:54,300 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:43:54,300 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:43:54,300 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 614.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:43:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 378. [2021-03-11 14:43:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4270557029177717) internal successors, (1292), 377 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1292 transitions. [2021-03-11 14:43:54,307 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1292 transitions. Word has length 22 [2021-03-11 14:43:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:54,307 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1292 transitions. [2021-03-11 14:43:54,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1292 transitions. [2021-03-11 14:43:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:54,308 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:54,308 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:54,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1502 [2021-03-11 14:43:54,308 INFO L428 AbstractCegarLoop]: === Iteration 1504 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:54,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:54,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2115293273, now seen corresponding path program 1498 times [2021-03-11 14:43:54,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:54,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063559852] [2021-03-11 14:43:54,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:54,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:54,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:54,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:54,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:54,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:54,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:54,408 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:54,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:54,465 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:54,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:54,537 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:54,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:54,627 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:54,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:54,732 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:54,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:54,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:54,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063559852] [2021-03-11 14:43:54,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:54,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:54,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416456976] [2021-03-11 14:43:54,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:54,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:54,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:54,836 INFO L87 Difference]: Start difference. First operand 378 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:55,196 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:55,255 INFO L93 Difference]: Finished difference Result 551 states and 1628 transitions. [2021-03-11 14:43:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:55,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:55,261 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:43:55,261 INFO L226 Difference]: Without dead ends: 536 [2021-03-11 14:43:55,261 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 676.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-03-11 14:43:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 375. [2021-03-11 14:43:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4385026737967914) internal successors, (1286), 374 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1286 transitions. [2021-03-11 14:43:55,268 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1286 transitions. Word has length 22 [2021-03-11 14:43:55,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:55,268 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1286 transitions. [2021-03-11 14:43:55,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:55,268 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1286 transitions. [2021-03-11 14:43:55,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:55,269 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:55,269 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:55,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1503 [2021-03-11 14:43:55,269 INFO L428 AbstractCegarLoop]: === Iteration 1505 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:55,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1571994223, now seen corresponding path program 1499 times [2021-03-11 14:43:55,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:55,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119673405] [2021-03-11 14:43:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:55,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:55,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:55,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:55,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:55,306 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:55,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:55,374 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:55,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:55,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:55,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:55,507 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:55,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:55,661 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:55,665 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:43:55,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:43:55,774 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:55,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119673405] [2021-03-11 14:43:55,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:55,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:55,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98306687] [2021-03-11 14:43:55,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:55,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:55,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:55,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:55,865 INFO L87 Difference]: Start difference. First operand 375 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:56,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:56,117 INFO L93 Difference]: Finished difference Result 544 states and 1614 transitions. [2021-03-11 14:43:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:56,123 INFO L225 Difference]: With dead ends: 544 [2021-03-11 14:43:56,123 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:43:56,123 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 638.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:56,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:43:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 376. [2021-03-11 14:43:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.432) internal successors, (1287), 375 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1287 transitions. [2021-03-11 14:43:56,130 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1287 transitions. Word has length 22 [2021-03-11 14:43:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:56,130 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1287 transitions. [2021-03-11 14:43:56,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1287 transitions. [2021-03-11 14:43:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:56,130 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:56,130 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:56,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1504 [2021-03-11 14:43:56,130 INFO L428 AbstractCegarLoop]: === Iteration 1506 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:56,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1036764421, now seen corresponding path program 1500 times [2021-03-11 14:43:56,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:56,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313947343] [2021-03-11 14:43:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:56,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:56,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:56,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:56,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:56,166 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:56,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:56,226 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:56,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:56,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:56,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:56,351 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:43:56,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:43:56,487 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:43:56,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:56,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:56,595 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:56,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:56,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:56,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313947343] [2021-03-11 14:43:56,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:56,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:56,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955843106] [2021-03-11 14:43:56,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:56,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:56,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:56,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:56,699 INFO L87 Difference]: Start difference. First operand 376 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:56,999 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:43:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:57,029 INFO L93 Difference]: Finished difference Result 547 states and 1619 transitions. [2021-03-11 14:43:57,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:57,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:57,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:57,033 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:43:57,033 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:43:57,033 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 662.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:43:57,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 374. [2021-03-11 14:43:57,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.442359249329759) internal successors, (1284), 373 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1284 transitions. [2021-03-11 14:43:57,039 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1284 transitions. Word has length 22 [2021-03-11 14:43:57,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:57,040 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1284 transitions. [2021-03-11 14:43:57,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1284 transitions. [2021-03-11 14:43:57,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:57,040 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:57,040 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:57,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1505 [2021-03-11 14:43:57,040 INFO L428 AbstractCegarLoop]: === Iteration 1507 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:57,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:57,040 INFO L82 PathProgramCache]: Analyzing trace with hash 787293035, now seen corresponding path program 1501 times [2021-03-11 14:43:57,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:57,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949721501] [2021-03-11 14:43:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:57,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:57,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:57,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:57,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:57,065 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:57,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:57,102 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:57,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:57,137 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:57,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:57,198 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:57,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:57,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:57,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:57,407 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:57,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:57,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949721501] [2021-03-11 14:43:57,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:57,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:57,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468042056] [2021-03-11 14:43:57,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:57,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:57,517 INFO L87 Difference]: Start difference. First operand 374 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:57,869 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:57,908 INFO L93 Difference]: Finished difference Result 551 states and 1634 transitions. [2021-03-11 14:43:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:57,914 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:43:57,914 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:43:57,915 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 608.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:57,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:43:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 378. [2021-03-11 14:43:57,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4323607427055705) internal successors, (1294), 377 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1294 transitions. [2021-03-11 14:43:57,921 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:57,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:57,921 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1294 transitions. [2021-03-11 14:43:57,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1294 transitions. [2021-03-11 14:43:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:57,922 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:57,922 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:57,922 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1506 [2021-03-11 14:43:57,922 INFO L428 AbstractCegarLoop]: === Iteration 1508 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:57,922 INFO L82 PathProgramCache]: Analyzing trace with hash 284751483, now seen corresponding path program 1502 times [2021-03-11 14:43:57,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:57,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145852264] [2021-03-11 14:43:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:57,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:57,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:57,959 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:58,019 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:58,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:58,068 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:58,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:58,132 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:58,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:58,210 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:58,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:58,309 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:58,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:58,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145852264] [2021-03-11 14:43:58,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:58,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:58,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787313817] [2021-03-11 14:43:58,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:58,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:58,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:58,406 INFO L87 Difference]: Start difference. First operand 378 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:58,717 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:58,755 INFO L93 Difference]: Finished difference Result 550 states and 1630 transitions. [2021-03-11 14:43:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:58,762 INFO L225 Difference]: With dead ends: 550 [2021-03-11 14:43:58,762 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:43:58,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 607.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:43:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 376. [2021-03-11 14:43:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.437333333333333) internal successors, (1289), 375 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1289 transitions. [2021-03-11 14:43:58,768 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1289 transitions. Word has length 22 [2021-03-11 14:43:58,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:58,768 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1289 transitions. [2021-03-11 14:43:58,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:58,768 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1289 transitions. [2021-03-11 14:43:58,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:58,769 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:58,769 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:58,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1507 [2021-03-11 14:43:58,769 INFO L428 AbstractCegarLoop]: === Iteration 1509 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1799985567, now seen corresponding path program 1503 times [2021-03-11 14:43:58,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:58,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916389112] [2021-03-11 14:43:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:58,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:58,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:58,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:58,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:58,802 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:58,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:58,861 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:58,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:58,916 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:58,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:58,988 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:58,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:59,074 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:59,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:43:59,180 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:43:59,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:43:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:43:59,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916389112] [2021-03-11 14:43:59,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:43:59,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:43:59,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22236504] [2021-03-11 14:43:59,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:43:59,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:43:59,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:43:59,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:43:59,273 INFO L87 Difference]: Start difference. First operand 376 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:59,591 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:43:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:43:59,630 INFO L93 Difference]: Finished difference Result 554 states and 1639 transitions. [2021-03-11 14:43:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:43:59,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:43:59,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:43:59,636 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:43:59,636 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:43:59,636 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 615.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:43:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:43:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 379. [2021-03-11 14:43:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4232804232804233) internal successors, (1294), 378 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1294 transitions. [2021-03-11 14:43:59,643 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1294 transitions. Word has length 22 [2021-03-11 14:43:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:43:59,643 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1294 transitions. [2021-03-11 14:43:59,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:43:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1294 transitions. [2021-03-11 14:43:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:43:59,643 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:43:59,643 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:43:59,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1508 [2021-03-11 14:43:59,643 INFO L428 AbstractCegarLoop]: === Iteration 1510 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:43:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:43:59,644 INFO L82 PathProgramCache]: Analyzing trace with hash -253639945, now seen corresponding path program 1504 times [2021-03-11 14:43:59,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:43:59,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625000816] [2021-03-11 14:43:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:43:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:43:59,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:59,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:43:59,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:43:59,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:43:59,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:43:59,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:43:59,733 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:43:59,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:43:59,784 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:43:59,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:43:59,859 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:43:59,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:43:59,952 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:43:59,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:00,058 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:00,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:00,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625000816] [2021-03-11 14:44:00,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:00,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717277583] [2021-03-11 14:44:00,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:00,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:00,166 INFO L87 Difference]: Start difference. First operand 379 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:00,501 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:00,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:00,553 INFO L93 Difference]: Finished difference Result 555 states and 1638 transitions. [2021-03-11 14:44:00,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:00,559 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:00,561 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:44:00,561 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:44:00,561 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 658.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:44:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 376. [2021-03-11 14:44:00,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.432) internal successors, (1287), 375 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1287 transitions. [2021-03-11 14:44:00,567 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1287 transitions. Word has length 22 [2021-03-11 14:44:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:00,568 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1287 transitions. [2021-03-11 14:44:00,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1287 transitions. [2021-03-11 14:44:00,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:00,568 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:00,568 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:00,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1509 [2021-03-11 14:44:00,568 INFO L428 AbstractCegarLoop]: === Iteration 1511 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:00,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1354782585, now seen corresponding path program 1505 times [2021-03-11 14:44:00,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:00,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18152640] [2021-03-11 14:44:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:00,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:00,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:00,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:00,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:00,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:00,608 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:00,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:00,678 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:00,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:00,741 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:00,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:00,816 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:00,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:00,913 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:00,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:01,031 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:01,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:01,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18152640] [2021-03-11 14:44:01,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:01,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:01,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674043678] [2021-03-11 14:44:01,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:01,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:01,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:01,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:01,145 INFO L87 Difference]: Start difference. First operand 376 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:01,506 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:01,541 INFO L93 Difference]: Finished difference Result 551 states and 1630 transitions. [2021-03-11 14:44:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:01,548 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:44:01,548 INFO L226 Difference]: Without dead ends: 541 [2021-03-11 14:44:01,548 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 712.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-03-11 14:44:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 378. [2021-03-11 14:44:01,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4217506631299734) internal successors, (1290), 377 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:01,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1290 transitions. [2021-03-11 14:44:01,555 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1290 transitions. Word has length 22 [2021-03-11 14:44:01,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:01,555 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1290 transitions. [2021-03-11 14:44:01,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:01,555 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1290 transitions. [2021-03-11 14:44:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:01,556 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:01,556 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:01,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1510 [2021-03-11 14:44:01,556 INFO L428 AbstractCegarLoop]: === Iteration 1512 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1181534893, now seen corresponding path program 1506 times [2021-03-11 14:44:01,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:01,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723780846] [2021-03-11 14:44:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:01,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:01,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:01,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:01,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:01,597 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:01,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:01,669 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:01,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:01,733 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:01,811 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:01,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:01,906 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:01,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:02,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:02,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:02,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723780846] [2021-03-11 14:44:02,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:02,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:02,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501894644] [2021-03-11 14:44:02,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:02,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:02,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:02,136 INFO L87 Difference]: Start difference. First operand 378 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:02,548 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:02,614 INFO L93 Difference]: Finished difference Result 553 states and 1632 transitions. [2021-03-11 14:44:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:02,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:02,620 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:44:02,620 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:44:02,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 707.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:02,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:44:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 374. [2021-03-11 14:44:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4396782841823055) internal successors, (1283), 373 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1283 transitions. [2021-03-11 14:44:02,627 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1283 transitions. Word has length 22 [2021-03-11 14:44:02,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:02,627 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1283 transitions. [2021-03-11 14:44:02,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1283 transitions. [2021-03-11 14:44:02,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:02,627 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:02,627 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:02,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1511 [2021-03-11 14:44:02,628 INFO L428 AbstractCegarLoop]: === Iteration 1513 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:02,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1267381401, now seen corresponding path program 1507 times [2021-03-11 14:44:02,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:02,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869107160] [2021-03-11 14:44:02,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:02,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:02,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:02,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:02,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:02,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:02,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:02,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:02,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:02,786 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:02,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:02,856 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:02,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:02,939 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:02,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:03,044 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:03,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:03,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869107160] [2021-03-11 14:44:03,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:03,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:03,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100578539] [2021-03-11 14:44:03,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:03,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:03,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:03,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:03,140 INFO L87 Difference]: Start difference. First operand 374 states and 1283 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:03,457 INFO L93 Difference]: Finished difference Result 540 states and 1605 transitions. [2021-03-11 14:44:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:03,461 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:44:03,461 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:44:03,461 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 562.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:44:03,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 376. [2021-03-11 14:44:03,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.432) internal successors, (1287), 375 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1287 transitions. [2021-03-11 14:44:03,468 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1287 transitions. Word has length 22 [2021-03-11 14:44:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:03,468 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1287 transitions. [2021-03-11 14:44:03,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1287 transitions. [2021-03-11 14:44:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:03,468 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:03,468 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:03,469 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1512 [2021-03-11 14:44:03,469 INFO L428 AbstractCegarLoop]: === Iteration 1514 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:03,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:03,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1416644937, now seen corresponding path program 1508 times [2021-03-11 14:44:03,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:03,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231358439] [2021-03-11 14:44:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:03,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:03,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:03,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:03,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:03,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:03,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:03,530 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:03,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:03,563 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:03,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:03,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:03,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:03,670 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:03,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:03,777 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:03,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:03,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:03,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231358439] [2021-03-11 14:44:03,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:03,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:03,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021460114] [2021-03-11 14:44:03,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:03,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:03,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:03,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:03,879 INFO L87 Difference]: Start difference. First operand 376 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:04,184 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:04,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:04,224 INFO L93 Difference]: Finished difference Result 541 states and 1606 transitions. [2021-03-11 14:44:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:04,230 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:44:04,230 INFO L226 Difference]: Without dead ends: 530 [2021-03-11 14:44:04,231 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 537.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-03-11 14:44:04,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 375. [2021-03-11 14:44:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.435828877005348) internal successors, (1285), 374 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1285 transitions. [2021-03-11 14:44:04,237 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1285 transitions. Word has length 22 [2021-03-11 14:44:04,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:04,237 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1285 transitions. [2021-03-11 14:44:04,237 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:04,237 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1285 transitions. [2021-03-11 14:44:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:04,238 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:04,238 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:04,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1513 [2021-03-11 14:44:04,238 INFO L428 AbstractCegarLoop]: === Iteration 1515 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2014893363, now seen corresponding path program 1509 times [2021-03-11 14:44:04,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:04,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497513800] [2021-03-11 14:44:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:04,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:04,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:04,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:04,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:04,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:04,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:04,337 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:04,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:04,393 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:04,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:04,465 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:04,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:04,606 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:04,609 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:04,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:04,717 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:04,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:04,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497513800] [2021-03-11 14:44:04,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:04,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:04,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899793949] [2021-03-11 14:44:04,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:04,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:04,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:04,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:04,812 INFO L87 Difference]: Start difference. First operand 375 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:05,098 INFO L93 Difference]: Finished difference Result 542 states and 1608 transitions. [2021-03-11 14:44:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:05,105 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:44:05,105 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:44:05,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 633.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:44:05,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 376. [2021-03-11 14:44:05,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.429333333333333) internal successors, (1286), 375 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1286 transitions. [2021-03-11 14:44:05,112 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1286 transitions. Word has length 22 [2021-03-11 14:44:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:05,112 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1286 transitions. [2021-03-11 14:44:05,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1286 transitions. [2021-03-11 14:44:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:05,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:05,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:05,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1514 [2021-03-11 14:44:05,113 INFO L428 AbstractCegarLoop]: === Iteration 1516 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:05,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1479663561, now seen corresponding path program 1510 times [2021-03-11 14:44:05,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:05,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708711186] [2021-03-11 14:44:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:05,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:05,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:05,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:05,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:05,151 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:05,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:05,211 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:05,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:05,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:05,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:05,333 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:05,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:05,473 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:05,477 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:05,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:05,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:05,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:05,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708711186] [2021-03-11 14:44:05,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:05,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:05,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250721162] [2021-03-11 14:44:05,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:05,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:05,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:05,680 INFO L87 Difference]: Start difference. First operand 376 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:06,011 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:06,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:06,063 INFO L93 Difference]: Finished difference Result 545 states and 1613 transitions. [2021-03-11 14:44:06,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:06,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:06,070 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:44:06,070 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:44:06,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 693.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:44:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 375. [2021-03-11 14:44:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4331550802139037) internal successors, (1284), 374 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:06,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1284 transitions. [2021-03-11 14:44:06,077 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1284 transitions. Word has length 22 [2021-03-11 14:44:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:06,077 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1284 transitions. [2021-03-11 14:44:06,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1284 transitions. [2021-03-11 14:44:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:06,078 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:06,078 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:06,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1515 [2021-03-11 14:44:06,078 INFO L428 AbstractCegarLoop]: === Iteration 1517 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:06,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2004390259, now seen corresponding path program 1511 times [2021-03-11 14:44:06,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:06,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709244296] [2021-03-11 14:44:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:06,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:06,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:06,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:06,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:06,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:06,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:06,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:06,241 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:06,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:06,314 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:06,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:06,400 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:06,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:06,513 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:06,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:06,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709244296] [2021-03-11 14:44:06,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:06,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:06,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655585142] [2021-03-11 14:44:06,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:06,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:06,615 INFO L87 Difference]: Start difference. First operand 375 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,021 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:07,058 INFO L93 Difference]: Finished difference Result 545 states and 1614 transitions. [2021-03-11 14:44:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:07,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:07,065 INFO L225 Difference]: With dead ends: 545 [2021-03-11 14:44:07,065 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:44:07,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 667.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:44:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 377. [2021-03-11 14:44:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.422872340425532) internal successors, (1287), 376 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1287 transitions. [2021-03-11 14:44:07,072 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1287 transitions. Word has length 22 [2021-03-11 14:44:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:07,072 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1287 transitions. [2021-03-11 14:44:07,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,072 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1287 transitions. [2021-03-11 14:44:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:07,073 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:07,073 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:07,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1516 [2021-03-11 14:44:07,073 INFO L428 AbstractCegarLoop]: === Iteration 1518 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:07,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1214865881, now seen corresponding path program 1512 times [2021-03-11 14:44:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:07,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436234885] [2021-03-11 14:44:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:07,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:07,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:07,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:07,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:07,116 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:07,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:07,183 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-11 14:44:07,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 14:44:07,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:07,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:07,319 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:07,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:07,409 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:07,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:07,513 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:07,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:07,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:07,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436234885] [2021-03-11 14:44:07,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:07,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:07,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893128244] [2021-03-11 14:44:07,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:07,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:07,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:07,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:07,612 INFO L87 Difference]: Start difference. First operand 377 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,909 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:07,968 INFO L93 Difference]: Finished difference Result 547 states and 1616 transitions. [2021-03-11 14:44:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:07,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:07,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:07,976 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:44:07,976 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:44:07,976 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 646.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:44:07,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 373. [2021-03-11 14:44:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.443548387096774) internal successors, (1281), 372 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1281 transitions. [2021-03-11 14:44:07,982 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1281 transitions. Word has length 22 [2021-03-11 14:44:07,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:07,982 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1281 transitions. [2021-03-11 14:44:07,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:07,982 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1281 transitions. [2021-03-11 14:44:07,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:07,983 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:07,983 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:07,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1517 [2021-03-11 14:44:07,983 INFO L428 AbstractCegarLoop]: === Iteration 1519 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:07,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2054750213, now seen corresponding path program 1513 times [2021-03-11 14:44:07,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:07,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217849390] [2021-03-11 14:44:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:07,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:07,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:07,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:07,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:08,022 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:08,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:08,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:08,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:08,182 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:08,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:08,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:08,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:08,346 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:08,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:08,460 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:08,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:08,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217849390] [2021-03-11 14:44:08,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:08,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:08,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049919180] [2021-03-11 14:44:08,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:08,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:08,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:08,567 INFO L87 Difference]: Start difference. First operand 373 states and 1281 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:08,910 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:08,946 INFO L93 Difference]: Finished difference Result 576 states and 1706 transitions. [2021-03-11 14:44:08,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:08,953 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:44:08,953 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:44:08,953 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 715.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:08,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:44:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 380. [2021-03-11 14:44:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.440633245382586) internal successors, (1304), 379 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1304 transitions. [2021-03-11 14:44:08,960 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1304 transitions. Word has length 22 [2021-03-11 14:44:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:08,960 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1304 transitions. [2021-03-11 14:44:08,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1304 transitions. [2021-03-11 14:44:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:08,960 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:08,960 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:08,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1518 [2021-03-11 14:44:08,961 INFO L428 AbstractCegarLoop]: === Iteration 1520 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1552208661, now seen corresponding path program 1514 times [2021-03-11 14:44:08,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:08,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096915818] [2021-03-11 14:44:08,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:08,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:08,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:08,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:08,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:08,998 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:09,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:09,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:09,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:09,153 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:09,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:09,228 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:09,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:09,325 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:09,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:09,441 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:09,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:09,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096915818] [2021-03-11 14:44:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:09,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:09,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563862722] [2021-03-11 14:44:09,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:09,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:09,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:09,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:09,544 INFO L87 Difference]: Start difference. First operand 380 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:09,856 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:09,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:09,898 INFO L93 Difference]: Finished difference Result 575 states and 1702 transitions. [2021-03-11 14:44:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:09,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:09,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:09,905 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:44:09,905 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:44:09,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 712.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:44:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 378. [2021-03-11 14:44:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4456233421750664) internal successors, (1299), 377 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1299 transitions. [2021-03-11 14:44:09,912 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1299 transitions. Word has length 22 [2021-03-11 14:44:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:09,912 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1299 transitions. [2021-03-11 14:44:09,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:09,912 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1299 transitions. [2021-03-11 14:44:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:09,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:09,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:09,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1519 [2021-03-11 14:44:09,913 INFO L428 AbstractCegarLoop]: === Iteration 1521 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1227524551, now seen corresponding path program 1515 times [2021-03-11 14:44:09,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:09,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346343946] [2021-03-11 14:44:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:09,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:09,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:09,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:09,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:09,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:09,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:10,020 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:10,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:10,118 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:10,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:10,197 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:10,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:10,291 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:10,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:10,384 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:10,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:10,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346343946] [2021-03-11 14:44:10,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:10,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:10,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662669176] [2021-03-11 14:44:10,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:10,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:10,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:10,453 INFO L87 Difference]: Start difference. First operand 378 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:10,712 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:10,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:10,745 INFO L93 Difference]: Finished difference Result 579 states and 1711 transitions. [2021-03-11 14:44:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:10,752 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:44:10,752 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:44:10,752 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 664.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:10,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:44:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 381. [2021-03-11 14:44:10,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.431578947368421) internal successors, (1304), 380 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:10,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1304 transitions. [2021-03-11 14:44:10,759 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1304 transitions. Word has length 22 [2021-03-11 14:44:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:10,759 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1304 transitions. [2021-03-11 14:44:10,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:10,759 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1304 transitions. [2021-03-11 14:44:10,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:10,760 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:10,760 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:10,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1520 [2021-03-11 14:44:10,760 INFO L428 AbstractCegarLoop]: === Iteration 1522 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1013817233, now seen corresponding path program 1516 times [2021-03-11 14:44:10,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:10,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015429641] [2021-03-11 14:44:10,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:10,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:10,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:10,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:10,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:10,796 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:10,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:10,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:10,943 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:10,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:11,014 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:11,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:11,109 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:11,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:11,224 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:11,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:11,366 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2021-03-11 14:44:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:11,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015429641] [2021-03-11 14:44:11,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:11,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:11,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999134448] [2021-03-11 14:44:11,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:11,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:11,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:11,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:11,369 INFO L87 Difference]: Start difference. First operand 381 states and 1304 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:11,745 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:11,800 INFO L93 Difference]: Finished difference Result 580 states and 1710 transitions. [2021-03-11 14:44:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:11,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:11,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:11,808 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:44:11,808 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:44:11,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 765.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:11,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:44:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 378. [2021-03-11 14:44:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.440318302387268) internal successors, (1297), 377 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1297 transitions. [2021-03-11 14:44:11,815 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1297 transitions. Word has length 22 [2021-03-11 14:44:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:11,815 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1297 transitions. [2021-03-11 14:44:11,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1297 transitions. [2021-03-11 14:44:11,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:11,816 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:11,816 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:11,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1521 [2021-03-11 14:44:11,816 INFO L428 AbstractCegarLoop]: === Iteration 1523 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:11,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1672727533, now seen corresponding path program 1517 times [2021-03-11 14:44:11,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:11,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222887007] [2021-03-11 14:44:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:11,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:11,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:11,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:11,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:11,856 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:11,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:11,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:11,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:12,031 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:12,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:12,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:12,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:12,223 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:12,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:12,354 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:12,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:12,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222887007] [2021-03-11 14:44:12,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:12,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:12,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342428632] [2021-03-11 14:44:12,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:12,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:12,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:12,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:12,480 INFO L87 Difference]: Start difference. First operand 378 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:12,905 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:12,946 INFO L93 Difference]: Finished difference Result 576 states and 1702 transitions. [2021-03-11 14:44:12,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:12,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:12,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:12,955 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:44:12,955 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:44:12,955 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 832.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:12,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:44:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 380. [2021-03-11 14:44:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.430079155672823) internal successors, (1300), 379 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1300 transitions. [2021-03-11 14:44:12,962 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1300 transitions. Word has length 22 [2021-03-11 14:44:12,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:12,962 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1300 transitions. [2021-03-11 14:44:12,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1300 transitions. [2021-03-11 14:44:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:12,963 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:12,963 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:12,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1522 [2021-03-11 14:44:12,963 INFO L428 AbstractCegarLoop]: === Iteration 1524 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:12,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1845975225, now seen corresponding path program 1518 times [2021-03-11 14:44:12,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:12,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940902284] [2021-03-11 14:44:12,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:12,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:12,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:12,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:13,002 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:13,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:13,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:13,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:13,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:13,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:13,247 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:13,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:13,330 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:13,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:13,463 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:13,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:13,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940902284] [2021-03-11 14:44:13,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:13,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:13,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101418555] [2021-03-11 14:44:13,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:13,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:13,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:13,600 INFO L87 Difference]: Start difference. First operand 380 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:13,979 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:14,036 INFO L93 Difference]: Finished difference Result 578 states and 1704 transitions. [2021-03-11 14:44:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:14,042 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:14,043 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:44:14,043 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:44:14,043 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 787.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:44:14,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 376. [2021-03-11 14:44:14,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.445333333333333) internal successors, (1292), 375 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1292 transitions. [2021-03-11 14:44:14,050 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1292 transitions. Word has length 22 [2021-03-11 14:44:14,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:14,050 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1292 transitions. [2021-03-11 14:44:14,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:14,050 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1292 transitions. [2021-03-11 14:44:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:14,050 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:14,050 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:14,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1523 [2021-03-11 14:44:14,050 INFO L428 AbstractCegarLoop]: === Iteration 1525 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:14,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1611851073, now seen corresponding path program 1519 times [2021-03-11 14:44:14,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:14,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538741324] [2021-03-11 14:44:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:14,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:14,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:14,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:14,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:14,089 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:14,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:14,156 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:14,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:14,250 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:14,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:14,365 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:14,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:14,461 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:14,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:14,575 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:14,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:14,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:14,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538741324] [2021-03-11 14:44:14,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:14,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:14,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039411282] [2021-03-11 14:44:14,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:14,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:14,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:14,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:14,683 INFO L87 Difference]: Start difference. First operand 376 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:15,058 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:15,096 INFO L93 Difference]: Finished difference Result 583 states and 1718 transitions. [2021-03-11 14:44:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:15,103 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:44:15,103 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:44:15,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 766.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:44:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 381. [2021-03-11 14:44:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4342105263157894) internal successors, (1305), 380 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:15,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1305 transitions. [2021-03-11 14:44:15,110 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1305 transitions. Word has length 22 [2021-03-11 14:44:15,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:15,110 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1305 transitions. [2021-03-11 14:44:15,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:15,111 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1305 transitions. [2021-03-11 14:44:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:15,111 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:15,111 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:15,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1524 [2021-03-11 14:44:15,111 INFO L428 AbstractCegarLoop]: === Iteration 1526 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:15,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1109309521, now seen corresponding path program 1520 times [2021-03-11 14:44:15,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:15,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155235246] [2021-03-11 14:44:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:15,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:15,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:15,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:15,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:15,153 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:15,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:15,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:15,317 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:15,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:15,431 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:15,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:15,526 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:15,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:15,640 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:15,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:15,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155235246] [2021-03-11 14:44:15,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:15,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:15,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783256560] [2021-03-11 14:44:15,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:15,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:15,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:15,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:15,746 INFO L87 Difference]: Start difference. First operand 381 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:16,063 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:16,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:16,101 INFO L93 Difference]: Finished difference Result 582 states and 1714 transitions. [2021-03-11 14:44:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:16,106 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:44:16,106 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:44:16,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 750.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:44:16,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 379. [2021-03-11 14:44:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.439153439153439) internal successors, (1300), 378 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1300 transitions. [2021-03-11 14:44:16,113 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1300 transitions. Word has length 22 [2021-03-11 14:44:16,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:16,113 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1300 transitions. [2021-03-11 14:44:16,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1300 transitions. [2021-03-11 14:44:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:16,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:16,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:16,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1525 [2021-03-11 14:44:16,113 INFO L428 AbstractCegarLoop]: === Iteration 1527 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:16,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:16,113 INFO L82 PathProgramCache]: Analyzing trace with hash -576332103, now seen corresponding path program 1521 times [2021-03-11 14:44:16,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:16,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276881379] [2021-03-11 14:44:16,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:16,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:16,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:16,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:16,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:16,145 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:16,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:16,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:16,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:16,292 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:16,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:16,410 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:16,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:16,554 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:44:16,558 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:16,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:16,669 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:16,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:16,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276881379] [2021-03-11 14:44:16,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:16,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:16,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520178928] [2021-03-11 14:44:16,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:16,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:16,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:16,779 INFO L87 Difference]: Start difference. First operand 379 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:17,125 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:17,160 INFO L93 Difference]: Finished difference Result 591 states and 1732 transitions. [2021-03-11 14:44:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:17,167 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:44:17,167 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:44:17,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 802.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:44:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 383. [2021-03-11 14:44:17,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.4214659685863875) internal successors, (1307), 382 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:17,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1307 transitions. [2021-03-11 14:44:17,174 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1307 transitions. Word has length 22 [2021-03-11 14:44:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:17,174 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1307 transitions. [2021-03-11 14:44:17,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1307 transitions. [2021-03-11 14:44:17,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:17,175 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:17,175 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:17,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1526 [2021-03-11 14:44:17,175 INFO L428 AbstractCegarLoop]: === Iteration 1528 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:17,175 INFO L82 PathProgramCache]: Analyzing trace with hash -503024691, now seen corresponding path program 1522 times [2021-03-11 14:44:17,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:17,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121711189] [2021-03-11 14:44:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:17,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:17,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:17,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:17,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:17,213 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:17,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:17,290 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:17,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:17,367 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:17,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:17,434 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:17,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:17,512 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:17,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:17,591 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:17,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:17,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121711189] [2021-03-11 14:44:17,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:17,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:17,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816725717] [2021-03-11 14:44:17,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:17,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:17,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:17,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:17,701 INFO L87 Difference]: Start difference. First operand 383 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:18,050 INFO L93 Difference]: Finished difference Result 596 states and 1738 transitions. [2021-03-11 14:44:18,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:18,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:18,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:18,058 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:44:18,058 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:44:18,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 599.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:18,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:44:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 379. [2021-03-11 14:44:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.431216931216931) internal successors, (1297), 378 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1297 transitions. [2021-03-11 14:44:18,065 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1297 transitions. Word has length 22 [2021-03-11 14:44:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:18,066 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1297 transitions. [2021-03-11 14:44:18,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1297 transitions. [2021-03-11 14:44:18,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:18,066 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:18,066 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:18,066 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1527 [2021-03-11 14:44:18,066 INFO L428 AbstractCegarLoop]: === Iteration 1529 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2094620465, now seen corresponding path program 1523 times [2021-03-11 14:44:18,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:18,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064262417] [2021-03-11 14:44:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:18,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:18,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:18,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:18,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:18,108 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:18,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:18,181 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:18,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:18,281 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:18,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:18,398 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:18,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:18,551 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:18,555 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:18,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:18,660 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:18,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:18,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064262417] [2021-03-11 14:44:18,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:18,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:18,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426509481] [2021-03-11 14:44:18,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:18,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:18,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:18,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:18,766 INFO L87 Difference]: Start difference. First operand 379 states and 1297 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:19,124 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:19,158 INFO L93 Difference]: Finished difference Result 588 states and 1722 transitions. [2021-03-11 14:44:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:19,165 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:44:19,165 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:44:19,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 828.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:44:19,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 382. [2021-03-11 14:44:19,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4173228346456694) internal successors, (1302), 381 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1302 transitions. [2021-03-11 14:44:19,172 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1302 transitions. Word has length 22 [2021-03-11 14:44:19,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:19,172 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1302 transitions. [2021-03-11 14:44:19,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1302 transitions. [2021-03-11 14:44:19,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:19,173 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:19,173 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:19,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1528 [2021-03-11 14:44:19,173 INFO L428 AbstractCegarLoop]: === Iteration 1530 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:19,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:19,173 INFO L82 PathProgramCache]: Analyzing trace with hash -778463161, now seen corresponding path program 1524 times [2021-03-11 14:44:19,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:19,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038984663] [2021-03-11 14:44:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:19,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:19,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:19,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:19,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:19,210 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:19,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:19,278 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:19,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:19,371 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:19,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:19,484 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:19,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:19,644 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:19,648 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:19,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:19,763 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:19,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:19,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038984663] [2021-03-11 14:44:19,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:19,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:19,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414647493] [2021-03-11 14:44:19,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:19,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:19,861 INFO L87 Difference]: Start difference. First operand 382 states and 1302 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:20,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:20,187 INFO L93 Difference]: Finished difference Result 594 states and 1731 transitions. [2021-03-11 14:44:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:20,194 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:44:20,194 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:44:20,194 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 749.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:44:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 376. [2021-03-11 14:44:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.437333333333333) internal successors, (1289), 375 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1289 transitions. [2021-03-11 14:44:20,201 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1289 transitions. Word has length 22 [2021-03-11 14:44:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:20,201 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1289 transitions. [2021-03-11 14:44:20,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1289 transitions. [2021-03-11 14:44:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:20,202 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:20,202 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:20,202 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1529 [2021-03-11 14:44:20,202 INFO L428 AbstractCegarLoop]: === Iteration 1531 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash -341726271, now seen corresponding path program 1525 times [2021-03-11 14:44:20,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:20,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563562884] [2021-03-11 14:44:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:20,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:20,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:20,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:20,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:20,241 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:20,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:20,303 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:20,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:20,390 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:20,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:20,500 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:20,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:20,582 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:20,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:20,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:20,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:20,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563562884] [2021-03-11 14:44:20,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:20,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:20,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447428005] [2021-03-11 14:44:20,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:20,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:20,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:20,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:20,803 INFO L87 Difference]: Start difference. First operand 376 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:21,166 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:21,203 INFO L93 Difference]: Finished difference Result 592 states and 1739 transitions. [2021-03-11 14:44:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:21,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:21,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:21,210 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:44:21,210 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:44:21,211 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 734.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:21,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:44:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 383. [2021-03-11 14:44:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.424083769633508) internal successors, (1308), 382 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1308 transitions. [2021-03-11 14:44:21,217 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1308 transitions. Word has length 22 [2021-03-11 14:44:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:21,217 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1308 transitions. [2021-03-11 14:44:21,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:21,218 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1308 transitions. [2021-03-11 14:44:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:21,218 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:21,218 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:21,218 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1530 [2021-03-11 14:44:21,218 INFO L428 AbstractCegarLoop]: === Iteration 1532 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:21,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1899615513, now seen corresponding path program 1526 times [2021-03-11 14:44:21,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:21,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353806402] [2021-03-11 14:44:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:21,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:21,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:21,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:21,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:21,257 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:21,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:21,326 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:21,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:21,418 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:21,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:21,535 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:21,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:21,628 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:21,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:21,742 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:21,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:21,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353806402] [2021-03-11 14:44:21,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:21,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:21,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002361313] [2021-03-11 14:44:21,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:21,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:21,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:21,852 INFO L87 Difference]: Start difference. First operand 383 states and 1308 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:22,182 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:22,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:22,221 INFO L93 Difference]: Finished difference Result 593 states and 1738 transitions. [2021-03-11 14:44:22,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:22,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:22,227 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:44:22,227 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:44:22,227 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 759.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:22,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:44:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 380. [2021-03-11 14:44:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.430079155672823) internal successors, (1300), 379 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1300 transitions. [2021-03-11 14:44:22,238 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1300 transitions. Word has length 22 [2021-03-11 14:44:22,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:22,238 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1300 transitions. [2021-03-11 14:44:22,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:22,238 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1300 transitions. [2021-03-11 14:44:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:22,239 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:22,239 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:22,239 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1531 [2021-03-11 14:44:22,239 INFO L428 AbstractCegarLoop]: === Iteration 1533 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash 752365317, now seen corresponding path program 1527 times [2021-03-11 14:44:22,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:22,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247442587] [2021-03-11 14:44:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:22,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:22,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:22,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:22,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:22,277 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:22,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:22,344 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:22,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:22,435 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:22,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:22,545 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:22,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:22,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:22,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:22,777 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:22,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:22,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247442587] [2021-03-11 14:44:22,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:22,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:22,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951475531] [2021-03-11 14:44:22,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:22,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:22,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:22,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:22,889 INFO L87 Difference]: Start difference. First operand 380 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:23,197 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:23,218 INFO L93 Difference]: Finished difference Result 597 states and 1745 transitions. [2021-03-11 14:44:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:23,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:23,222 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:44:23,223 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:44:23,223 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 737.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:23,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:44:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 384. [2021-03-11 14:44:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.412532637075718) internal successors, (1307), 383 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1307 transitions. [2021-03-11 14:44:23,229 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1307 transitions. Word has length 22 [2021-03-11 14:44:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:23,229 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1307 transitions. [2021-03-11 14:44:23,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:23,229 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1307 transitions. [2021-03-11 14:44:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:23,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:23,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:23,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1532 [2021-03-11 14:44:23,230 INFO L428 AbstractCegarLoop]: === Iteration 1534 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:23,230 INFO L82 PathProgramCache]: Analyzing trace with hash 825672729, now seen corresponding path program 1528 times [2021-03-11 14:44:23,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:23,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485011492] [2021-03-11 14:44:23,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:23,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:23,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:23,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:23,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:23,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:23,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:23,298 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:23,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:23,389 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:23,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:23,505 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:23,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:23,649 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:44:23,653 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:23,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:23,769 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:23,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:23,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485011492] [2021-03-11 14:44:23,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:23,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:23,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618378660] [2021-03-11 14:44:23,881 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:23,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:23,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:23,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:23,881 INFO L87 Difference]: Start difference. First operand 384 states and 1307 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:24,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:24,202 INFO L93 Difference]: Finished difference Result 602 states and 1751 transitions. [2021-03-11 14:44:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:24,208 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:24,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:24,209 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:44:24,209 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:44:24,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 714.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:44:24,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 380. [2021-03-11 14:44:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4195250659630605) internal successors, (1296), 379 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1296 transitions. [2021-03-11 14:44:24,216 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1296 transitions. Word has length 22 [2021-03-11 14:44:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:24,216 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1296 transitions. [2021-03-11 14:44:24,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1296 transitions. [2021-03-11 14:44:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:24,217 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:24,217 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:24,217 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1533 [2021-03-11 14:44:24,217 INFO L428 AbstractCegarLoop]: === Iteration 1535 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:24,217 INFO L82 PathProgramCache]: Analyzing trace with hash -122822011, now seen corresponding path program 1529 times [2021-03-11 14:44:24,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:24,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109134199] [2021-03-11 14:44:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:24,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:24,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:24,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:24,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:24,256 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:24,324 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:24,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:24,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:24,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:24,545 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:24,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:24,694 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:24,698 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:24,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:24,820 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:24,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:24,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109134199] [2021-03-11 14:44:24,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:24,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:24,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23392722] [2021-03-11 14:44:24,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:24,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:24,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:24,933 INFO L87 Difference]: Start difference. First operand 380 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:25,279 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2021-03-11 14:44:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:25,318 INFO L93 Difference]: Finished difference Result 600 states and 1748 transitions. [2021-03-11 14:44:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:25,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:25,325 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:44:25,325 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:44:25,325 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 855.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:44:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 385. [2021-03-11 14:44:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.3984375) internal successors, (1305), 384 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1305 transitions. [2021-03-11 14:44:25,332 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1305 transitions. Word has length 22 [2021-03-11 14:44:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:25,332 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 1305 transitions. [2021-03-11 14:44:25,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1305 transitions. [2021-03-11 14:44:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:25,333 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:25,333 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:25,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1534 [2021-03-11 14:44:25,333 INFO L428 AbstractCegarLoop]: === Iteration 1536 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1587791297, now seen corresponding path program 1530 times [2021-03-11 14:44:25,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:25,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315158552] [2021-03-11 14:44:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:25,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:25,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:25,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:25,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:25,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:25,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:25,446 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:25,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:25,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:25,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:25,665 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:25,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:25,812 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:25,817 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:25,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:25,928 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:25,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:26,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315158552] [2021-03-11 14:44:26,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:26,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:26,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844913904] [2021-03-11 14:44:26,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:26,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:26,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:26,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:26,039 INFO L87 Difference]: Start difference. First operand 385 states and 1305 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:26,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:26,369 INFO L93 Difference]: Finished difference Result 604 states and 1751 transitions. [2021-03-11 14:44:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:26,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:26,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:26,375 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:44:26,375 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:44:26,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 746.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:44:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 376. [2021-03-11 14:44:26,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.429333333333333) internal successors, (1286), 375 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1286 transitions. [2021-03-11 14:44:26,382 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1286 transitions. Word has length 22 [2021-03-11 14:44:26,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:26,382 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1286 transitions. [2021-03-11 14:44:26,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1286 transitions. [2021-03-11 14:44:26,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:26,382 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:26,382 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:26,383 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1535 [2021-03-11 14:44:26,383 INFO L428 AbstractCegarLoop]: === Iteration 1537 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:26,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:26,383 INFO L82 PathProgramCache]: Analyzing trace with hash 2084658005, now seen corresponding path program 1531 times [2021-03-11 14:44:26,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:26,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701994471] [2021-03-11 14:44:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:26,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:26,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:26,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:26,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:26,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:26,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:26,476 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:26,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:26,561 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:26,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:26,679 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:26,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:26,771 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:26,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:26,888 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:26,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:26,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701994471] [2021-03-11 14:44:26,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:26,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:26,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787392919] [2021-03-11 14:44:26,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:26,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:26,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:26,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:26,997 INFO L87 Difference]: Start difference. First operand 376 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:27,357 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:27,392 INFO L93 Difference]: Finished difference Result 585 states and 1717 transitions. [2021-03-11 14:44:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:27,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:27,399 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:44:27,399 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:44:27,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 752.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:44:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 381. [2021-03-11 14:44:27,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.418421052631579) internal successors, (1299), 380 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1299 transitions. [2021-03-11 14:44:27,406 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1299 transitions. Word has length 22 [2021-03-11 14:44:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:27,406 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1299 transitions. [2021-03-11 14:44:27,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:27,406 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1299 transitions. [2021-03-11 14:44:27,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:27,407 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:27,407 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:27,407 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1536 [2021-03-11 14:44:27,407 INFO L428 AbstractCegarLoop]: === Iteration 1538 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:27,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1911410313, now seen corresponding path program 1532 times [2021-03-11 14:44:27,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:27,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118246276] [2021-03-11 14:44:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:27,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:27,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:27,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:27,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:27,445 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:27,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:27,514 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:27,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:27,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:27,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:27,726 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:27,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:27,824 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:27,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:27,940 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:27,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:28,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118246276] [2021-03-11 14:44:28,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:28,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:28,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000233135] [2021-03-11 14:44:28,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:28,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:28,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:28,049 INFO L87 Difference]: Start difference. First operand 381 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:28,390 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:28,435 INFO L93 Difference]: Finished difference Result 587 states and 1719 transitions. [2021-03-11 14:44:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:28,441 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:44:28,441 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:44:28,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 776.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:44:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 379. [2021-03-11 14:44:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4232804232804233) internal successors, (1294), 378 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1294 transitions. [2021-03-11 14:44:28,447 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1294 transitions. Word has length 22 [2021-03-11 14:44:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:28,447 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1294 transitions. [2021-03-11 14:44:28,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1294 transitions. [2021-03-11 14:44:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:28,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:28,448 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:28,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1537 [2021-03-11 14:44:28,448 INFO L428 AbstractCegarLoop]: === Iteration 1539 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1011572625, now seen corresponding path program 1533 times [2021-03-11 14:44:28,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:28,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790966440] [2021-03-11 14:44:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:28,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:28,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:28,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:28,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:28,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:28,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:28,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:28,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:28,625 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:28,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:28,746 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:28,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:28,904 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:28,908 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:28,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:29,017 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:29,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:29,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790966440] [2021-03-11 14:44:29,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:29,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:29,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524434190] [2021-03-11 14:44:29,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:29,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:29,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:29,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:29,127 INFO L87 Difference]: Start difference. First operand 379 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:29,501 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:29,537 INFO L93 Difference]: Finished difference Result 590 states and 1724 transitions. [2021-03-11 14:44:29,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:29,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:29,545 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:44:29,545 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:44:29,545 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 813.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:29,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:44:29,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 382. [2021-03-11 14:44:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.409448818897638) internal successors, (1299), 381 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1299 transitions. [2021-03-11 14:44:29,552 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1299 transitions. Word has length 22 [2021-03-11 14:44:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:29,552 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1299 transitions. [2021-03-11 14:44:29,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1299 transitions. [2021-03-11 14:44:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:29,553 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:29,553 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:29,553 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1538 [2021-03-11 14:44:29,553 INFO L428 AbstractCegarLoop]: === Iteration 1540 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:29,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1967237367, now seen corresponding path program 1534 times [2021-03-11 14:44:29,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:29,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548306238] [2021-03-11 14:44:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:29,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:29,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:29,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:29,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:29,593 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:29,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:29,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:29,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:29,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:29,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:29,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:29,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:30,034 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:30,036 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:30,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:30,110 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:30,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:30,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548306238] [2021-03-11 14:44:30,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:30,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:30,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284415227] [2021-03-11 14:44:30,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:30,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:30,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:30,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:30,179 INFO L87 Difference]: Start difference. First operand 382 states and 1299 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:30,469 INFO L93 Difference]: Finished difference Result 596 states and 1733 transitions. [2021-03-11 14:44:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:30,476 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:44:30,476 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:44:30,476 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 682.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:44:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 379. [2021-03-11 14:44:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4153439153439153) internal successors, (1291), 378 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1291 transitions. [2021-03-11 14:44:30,483 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1291 transitions. Word has length 22 [2021-03-11 14:44:30,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:30,483 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1291 transitions. [2021-03-11 14:44:30,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:30,483 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1291 transitions. [2021-03-11 14:44:30,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:30,484 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:30,484 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:30,484 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1539 [2021-03-11 14:44:30,484 INFO L428 AbstractCegarLoop]: === Iteration 1541 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:30,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:30,484 INFO L82 PathProgramCache]: Analyzing trace with hash -237386223, now seen corresponding path program 1535 times [2021-03-11 14:44:30,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:30,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703762453] [2021-03-11 14:44:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:30,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:30,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:30,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:30,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:30,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:30,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:30,584 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:30,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:30,676 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:30,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:30,801 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:30,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:30,964 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:30,969 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:30,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:31,092 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:31,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:31,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703762453] [2021-03-11 14:44:31,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:31,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:31,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043996836] [2021-03-11 14:44:31,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:31,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:31,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:31,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:31,209 INFO L87 Difference]: Start difference. First operand 379 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:31,568 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:31,609 INFO L93 Difference]: Finished difference Result 596 states and 1735 transitions. [2021-03-11 14:44:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:31,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:31,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:31,617 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:44:31,617 INFO L226 Difference]: Without dead ends: 584 [2021-03-11 14:44:31,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 863.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:31,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-03-11 14:44:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 384. [2021-03-11 14:44:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 3.3942558746736293) internal successors, (1300), 383 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1300 transitions. [2021-03-11 14:44:31,624 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1300 transitions. Word has length 22 [2021-03-11 14:44:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:31,624 INFO L480 AbstractCegarLoop]: Abstraction has 384 states and 1300 transitions. [2021-03-11 14:44:31,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1300 transitions. [2021-03-11 14:44:31,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:31,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:31,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:31,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1540 [2021-03-11 14:44:31,625 INFO L428 AbstractCegarLoop]: === Iteration 1542 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1252018773, now seen corresponding path program 1536 times [2021-03-11 14:44:31,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:31,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277691247] [2021-03-11 14:44:31,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:31,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:31,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:31,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:31,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:31,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:31,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:31,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:31,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:31,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:31,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:31,952 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:31,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:32,114 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:32,118 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:32,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:32,244 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:32,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:32,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277691247] [2021-03-11 14:44:32,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:32,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:32,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970699676] [2021-03-11 14:44:32,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:32,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:32,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:32,364 INFO L87 Difference]: Start difference. First operand 384 states and 1300 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:32,724 INFO L93 Difference]: Finished difference Result 600 states and 1738 transitions. [2021-03-11 14:44:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:32,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:32,732 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:44:32,732 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:44:32,732 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 807.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:44:32,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 373. [2021-03-11 14:44:32,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4381720430107525) internal successors, (1279), 372 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1279 transitions. [2021-03-11 14:44:32,739 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1279 transitions. Word has length 22 [2021-03-11 14:44:32,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:32,739 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1279 transitions. [2021-03-11 14:44:32,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:32,739 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1279 transitions. [2021-03-11 14:44:32,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:32,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:32,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:32,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1541 [2021-03-11 14:44:32,740 INFO L428 AbstractCegarLoop]: === Iteration 1543 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:32,740 INFO L82 PathProgramCache]: Analyzing trace with hash 2112352853, now seen corresponding path program 1537 times [2021-03-11 14:44:32,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:32,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617677638] [2021-03-11 14:44:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:32,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:32,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:32,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:32,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:32,780 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:32,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:32,847 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:32,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:32,944 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:32,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:33,020 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:33,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:33,120 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:33,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:33,224 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:33,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:33,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617677638] [2021-03-11 14:44:33,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:33,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:33,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801607264] [2021-03-11 14:44:33,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:33,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:33,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:33,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:33,319 INFO L87 Difference]: Start difference. First operand 373 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:33,610 INFO L93 Difference]: Finished difference Result 553 states and 1636 transitions. [2021-03-11 14:44:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:33,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:33,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:33,617 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:44:33,617 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:44:33,618 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 642.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:44:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 377. [2021-03-11 14:44:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4335106382978724) internal successors, (1291), 376 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1291 transitions. [2021-03-11 14:44:33,624 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1291 transitions. Word has length 22 [2021-03-11 14:44:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:33,624 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1291 transitions. [2021-03-11 14:44:33,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1291 transitions. [2021-03-11 14:44:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:33,625 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:33,625 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:33,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1542 [2021-03-11 14:44:33,625 INFO L428 AbstractCegarLoop]: === Iteration 1544 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -571673485, now seen corresponding path program 1538 times [2021-03-11 14:44:33,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:33,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14415058] [2021-03-11 14:44:33,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:33,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:33,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:33,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:33,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:33,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:33,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:33,733 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:33,830 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:33,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:33,908 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:33,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:34,012 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:34,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:34,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:34,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:34,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14415058] [2021-03-11 14:44:34,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:34,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:34,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478298192] [2021-03-11 14:44:34,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:34,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:34,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:34,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:34,243 INFO L87 Difference]: Start difference. First operand 377 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:34,577 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:34,631 INFO L93 Difference]: Finished difference Result 554 states and 1637 transitions. [2021-03-11 14:44:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:34,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:34,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:34,638 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:44:34,638 INFO L226 Difference]: Without dead ends: 543 [2021-03-11 14:44:34,638 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 750.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-03-11 14:44:34,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 376. [2021-03-11 14:44:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.437333333333333) internal successors, (1289), 375 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1289 transitions. [2021-03-11 14:44:34,645 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1289 transitions. Word has length 22 [2021-03-11 14:44:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:34,645 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1289 transitions. [2021-03-11 14:44:34,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1289 transitions. [2021-03-11 14:44:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:34,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:34,646 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:34,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1543 [2021-03-11 14:44:34,646 INFO L428 AbstractCegarLoop]: === Iteration 1545 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:34,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1169921911, now seen corresponding path program 1539 times [2021-03-11 14:44:34,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:34,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899772767] [2021-03-11 14:44:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:34,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:34,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:34,686 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:34,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:34,758 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:34,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:34,856 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:34,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:34,934 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:34,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:35,090 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:35,095 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:35,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:35,224 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:35,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:35,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899772767] [2021-03-11 14:44:35,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:35,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:35,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178438463] [2021-03-11 14:44:35,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:35,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:35,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:35,335 INFO L87 Difference]: Start difference. First operand 376 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:35,637 INFO L93 Difference]: Finished difference Result 555 states and 1639 transitions. [2021-03-11 14:44:35,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:35,642 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:35,643 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:44:35,643 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:44:35,644 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 736.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:44:35,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 377. [2021-03-11 14:44:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4308510638297873) internal successors, (1290), 376 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1290 transitions. [2021-03-11 14:44:35,650 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1290 transitions. Word has length 22 [2021-03-11 14:44:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:35,650 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1290 transitions. [2021-03-11 14:44:35,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1290 transitions. [2021-03-11 14:44:35,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:35,650 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:35,650 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:35,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1544 [2021-03-11 14:44:35,651 INFO L428 AbstractCegarLoop]: === Iteration 1546 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:35,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:35,651 INFO L82 PathProgramCache]: Analyzing trace with hash -634692109, now seen corresponding path program 1540 times [2021-03-11 14:44:35,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:35,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507805095] [2021-03-11 14:44:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:35,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:35,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:35,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:35,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:35,685 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:35,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:35,744 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:35,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:35,820 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:35,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:35,887 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:35,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:36,033 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:36,037 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:36,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:36,149 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:36,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:36,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507805095] [2021-03-11 14:44:36,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:36,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:36,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551087764] [2021-03-11 14:44:36,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:36,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:36,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:36,261 INFO L87 Difference]: Start difference. First operand 377 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:36,605 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:36,676 INFO L93 Difference]: Finished difference Result 558 states and 1644 transitions. [2021-03-11 14:44:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:36,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:36,683 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:44:36,683 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:44:36,683 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 749.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:44:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 376. [2021-03-11 14:44:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4346666666666668) internal successors, (1288), 375 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1288 transitions. [2021-03-11 14:44:36,690 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1288 transitions. Word has length 22 [2021-03-11 14:44:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:36,690 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1288 transitions. [2021-03-11 14:44:36,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1288 transitions. [2021-03-11 14:44:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:36,691 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:36,691 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:36,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1545 [2021-03-11 14:44:36,691 INFO L428 AbstractCegarLoop]: === Iteration 1547 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:36,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1159418807, now seen corresponding path program 1541 times [2021-03-11 14:44:36,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:36,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788384399] [2021-03-11 14:44:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:36,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:36,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:36,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:36,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:36,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:36,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:36,800 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:36,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:36,900 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:36,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:36,978 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:36,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:37,075 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:37,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:37,186 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:37,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:37,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788384399] [2021-03-11 14:44:37,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:37,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:37,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865421948] [2021-03-11 14:44:37,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:37,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:37,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:37,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:37,302 INFO L87 Difference]: Start difference. First operand 376 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:37,648 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:37,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:37,672 INFO L93 Difference]: Finished difference Result 558 states and 1645 transitions. [2021-03-11 14:44:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:37,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:37,677 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:44:37,677 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:44:37,677 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 734.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:44:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 378. [2021-03-11 14:44:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.424403183023873) internal successors, (1291), 377 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1291 transitions. [2021-03-11 14:44:37,683 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1291 transitions. Word has length 22 [2021-03-11 14:44:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:37,683 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1291 transitions. [2021-03-11 14:44:37,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:37,683 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1291 transitions. [2021-03-11 14:44:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:37,684 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:37,684 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:37,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1546 [2021-03-11 14:44:37,684 INFO L428 AbstractCegarLoop]: === Iteration 1548 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:37,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:37,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2059837333, now seen corresponding path program 1542 times [2021-03-11 14:44:37,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:37,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731252112] [2021-03-11 14:44:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:37,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:37,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:37,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:37,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:37,711 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:37,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:37,752 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:37,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:37,809 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:37,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:37,877 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:37,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:37,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:37,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:38,079 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:38,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:38,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731252112] [2021-03-11 14:44:38,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:38,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:38,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333993975] [2021-03-11 14:44:38,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:38,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:38,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:38,180 INFO L87 Difference]: Start difference. First operand 378 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:38,585 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:38,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:38,644 INFO L93 Difference]: Finished difference Result 560 states and 1647 transitions. [2021-03-11 14:44:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:38,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:38,651 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:44:38,651 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:44:38,651 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 636.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:44:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 375. [2021-03-11 14:44:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4385026737967914) internal successors, (1286), 374 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1286 transitions. [2021-03-11 14:44:38,658 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1286 transitions. Word has length 22 [2021-03-11 14:44:38,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:38,658 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1286 transitions. [2021-03-11 14:44:38,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1286 transitions. [2021-03-11 14:44:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:38,659 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:38,659 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:38,659 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1547 [2021-03-11 14:44:38,659 INFO L428 AbstractCegarLoop]: === Iteration 1549 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:38,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:38,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1669453713, now seen corresponding path program 1543 times [2021-03-11 14:44:38,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:38,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882411393] [2021-03-11 14:44:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:38,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:38,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:38,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:38,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:38,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:38,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:38,766 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:38,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:38,861 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:38,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:38,989 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-03-11 14:44:38,993 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:38,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:39,095 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:39,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:39,216 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:39,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:39,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882411393] [2021-03-11 14:44:39,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:39,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:39,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727457002] [2021-03-11 14:44:39,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:39,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:39,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:39,327 INFO L87 Difference]: Start difference. First operand 375 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:39,659 INFO L93 Difference]: Finished difference Result 560 states and 1649 transitions. [2021-03-11 14:44:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:39,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:39,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:39,667 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:44:39,667 INFO L226 Difference]: Without dead ends: 551 [2021-03-11 14:44:39,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 731.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2021-03-11 14:44:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 378. [2021-03-11 14:44:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.429708222811671) internal successors, (1293), 377 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:39,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1293 transitions. [2021-03-11 14:44:39,674 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1293 transitions. Word has length 22 [2021-03-11 14:44:39,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:39,674 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1293 transitions. [2021-03-11 14:44:39,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1293 transitions. [2021-03-11 14:44:39,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:39,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:39,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:39,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1548 [2021-03-11 14:44:39,675 INFO L428 AbstractCegarLoop]: === Iteration 1550 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:39,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:39,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1014572625, now seen corresponding path program 1544 times [2021-03-11 14:44:39,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:39,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129217648] [2021-03-11 14:44:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:39,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:39,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:39,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:39,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:39,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:39,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:39,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:39,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:39,900 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:39,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:40,021 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:44:40,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:44:40,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:40,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:40,271 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:40,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:40,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129217648] [2021-03-11 14:44:40,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:40,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:40,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067712968] [2021-03-11 14:44:40,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:40,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:40,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:40,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:40,395 INFO L87 Difference]: Start difference. First operand 378 states and 1293 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:40,779 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:40,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:40,824 INFO L93 Difference]: Finished difference Result 561 states and 1650 transitions. [2021-03-11 14:44:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:40,831 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:44:40,831 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:44:40,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 857.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:44:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 377. [2021-03-11 14:44:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4335106382978724) internal successors, (1291), 376 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1291 transitions. [2021-03-11 14:44:40,838 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1291 transitions. Word has length 22 [2021-03-11 14:44:40,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:40,838 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1291 transitions. [2021-03-11 14:44:40,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1291 transitions. [2021-03-11 14:44:40,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:40,839 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:40,839 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:40,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1549 [2021-03-11 14:44:40,839 INFO L428 AbstractCegarLoop]: === Iteration 1551 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:40,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:40,839 INFO L82 PathProgramCache]: Analyzing trace with hash -518729463, now seen corresponding path program 1545 times [2021-03-11 14:44:40,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:40,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579303082] [2021-03-11 14:44:40,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:40,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:40,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:40,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:40,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:40,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:40,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:40,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:40,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:41,052 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:41,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:41,186 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-03-11 14:44:41,190 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:41,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:41,319 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:41,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:41,444 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:41,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:41,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579303082] [2021-03-11 14:44:41,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:41,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:41,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396450600] [2021-03-11 14:44:41,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:41,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:41,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:41,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:41,560 INFO L87 Difference]: Start difference. First operand 377 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:41,925 INFO L93 Difference]: Finished difference Result 567 states and 1661 transitions. [2021-03-11 14:44:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:41,933 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:44:41,933 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:44:41,933 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 791.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:44:41,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 379. [2021-03-11 14:44:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4232804232804233) internal successors, (1294), 378 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1294 transitions. [2021-03-11 14:44:41,940 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1294 transitions. Word has length 22 [2021-03-11 14:44:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:41,940 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1294 transitions. [2021-03-11 14:44:41,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:41,940 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1294 transitions. [2021-03-11 14:44:41,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:41,941 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:41,941 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:41,941 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1550 [2021-03-11 14:44:41,941 INFO L428 AbstractCegarLoop]: === Iteration 1552 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1056585041, now seen corresponding path program 1546 times [2021-03-11 14:44:41,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:41,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340050306] [2021-03-11 14:44:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:41,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:41,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:41,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:41,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:41,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:41,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:42,066 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:42,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:42,181 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:42,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:42,331 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-03-11 14:44:42,336 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:42,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:42,496 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 15 [2021-03-11 14:44:42,500 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:42,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:42,627 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:42,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:42,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340050306] [2021-03-11 14:44:42,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:42,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:42,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471295842] [2021-03-11 14:44:42,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:42,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:42,739 INFO L87 Difference]: Start difference. First operand 379 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:43,137 INFO L93 Difference]: Finished difference Result 574 states and 1673 transitions. [2021-03-11 14:44:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:43,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:43,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:43,144 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:44:43,144 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:44:43,144 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 863.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:43,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:44:43,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 377. [2021-03-11 14:44:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4281914893617023) internal successors, (1289), 376 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1289 transitions. [2021-03-11 14:44:43,151 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1289 transitions. Word has length 22 [2021-03-11 14:44:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:43,151 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1289 transitions. [2021-03-11 14:44:43,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1289 transitions. [2021-03-11 14:44:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:43,152 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:43,152 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:43,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1551 [2021-03-11 14:44:43,152 INFO L428 AbstractCegarLoop]: === Iteration 1553 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:43,152 INFO L82 PathProgramCache]: Analyzing trace with hash -508226359, now seen corresponding path program 1547 times [2021-03-11 14:44:43,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:43,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78560558] [2021-03-11 14:44:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:43,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:43,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:43,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:43,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:43,190 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:43,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:43,257 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:43,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:43,346 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:43,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:43,471 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:43,650 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:43,654 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:43,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:43,792 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:43,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:43,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:43,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78560558] [2021-03-11 14:44:43,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:43,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:43,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478346872] [2021-03-11 14:44:43,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:43,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:43,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:43,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:43,910 INFO L87 Difference]: Start difference. First operand 377 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:44,280 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:44,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:44,318 INFO L93 Difference]: Finished difference Result 570 states and 1666 transitions. [2021-03-11 14:44:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:44,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:44,325 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:44:44,325 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:44:44,326 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 898.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:44,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:44:44,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 380. [2021-03-11 14:44:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4142480211081794) internal successors, (1294), 379 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1294 transitions. [2021-03-11 14:44:44,333 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1294 transitions. Word has length 22 [2021-03-11 14:44:44,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:44,333 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1294 transitions. [2021-03-11 14:44:44,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:44,333 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1294 transitions. [2021-03-11 14:44:44,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:44,333 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:44,333 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:44,333 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1552 [2021-03-11 14:44:44,334 INFO L428 AbstractCegarLoop]: === Iteration 1554 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1637944401, now seen corresponding path program 1548 times [2021-03-11 14:44:44,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:44,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175536859] [2021-03-11 14:44:44,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:44,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:44,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:44,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:44,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:44,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:44,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:44,442 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:44,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:44,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:44,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:44,677 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2021-03-11 14:44:44,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:44,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:44,844 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:44,848 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:44,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:44,968 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:44,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:45,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175536859] [2021-03-11 14:44:45,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:45,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:45,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710348746] [2021-03-11 14:44:45,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:45,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:45,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:45,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:45,081 INFO L87 Difference]: Start difference. First operand 380 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:45,429 INFO L93 Difference]: Finished difference Result 576 states and 1675 transitions. [2021-03-11 14:44:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:45,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:45,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:45,436 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:44:45,436 INFO L226 Difference]: Without dead ends: 555 [2021-03-11 14:44:45,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 798.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-11 14:44:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 375. [2021-03-11 14:44:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4331550802139037) internal successors, (1284), 374 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:45,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1284 transitions. [2021-03-11 14:44:45,443 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1284 transitions. Word has length 22 [2021-03-11 14:44:45,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:45,443 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1284 transitions. [2021-03-11 14:44:45,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:45,443 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1284 transitions. [2021-03-11 14:44:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:45,443 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:45,443 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:45,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1553 [2021-03-11 14:44:45,444 INFO L428 AbstractCegarLoop]: === Iteration 1555 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:45,444 INFO L82 PathProgramCache]: Analyzing trace with hash -284123631, now seen corresponding path program 1549 times [2021-03-11 14:44:45,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:45,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778777976] [2021-03-11 14:44:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:45,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:45,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:45,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:45,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:45,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:45,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:45,551 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:45,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:45,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:45,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:45,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:45,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:45,887 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:45,891 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:46,003 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:46,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:46,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778777976] [2021-03-11 14:44:46,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:46,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:46,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155551931] [2021-03-11 14:44:46,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:46,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:46,121 INFO L87 Difference]: Start difference. First operand 375 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:46,517 INFO L93 Difference]: Finished difference Result 566 states and 1661 transitions. [2021-03-11 14:44:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:46,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:46,525 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:44:46,525 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:44:46,525 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 741.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:44:46,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 378. [2021-03-11 14:44:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.424403183023873) internal successors, (1291), 377 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1291 transitions. [2021-03-11 14:44:46,532 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1291 transitions. Word has length 22 [2021-03-11 14:44:46,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:46,532 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1291 transitions. [2021-03-11 14:44:46,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1291 transitions. [2021-03-11 14:44:46,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:46,533 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:46,533 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:46,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1554 [2021-03-11 14:44:46,533 INFO L428 AbstractCegarLoop]: === Iteration 1556 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash 251106171, now seen corresponding path program 1550 times [2021-03-11 14:44:46,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:46,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390569133] [2021-03-11 14:44:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:46,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:46,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:46,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:46,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:46,570 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:46,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:46,637 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:46,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:46,742 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:46,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:46,867 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2021-03-11 14:44:46,871 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:46,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:47,027 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:44:47,032 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:47,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:47,151 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:47,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:47,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390569133] [2021-03-11 14:44:47,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:47,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:47,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903446377] [2021-03-11 14:44:47,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:47,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:47,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:47,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:47,267 INFO L87 Difference]: Start difference. First operand 378 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:47,639 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:47,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:47,691 INFO L93 Difference]: Finished difference Result 569 states and 1666 transitions. [2021-03-11 14:44:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:47,698 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:44:47,698 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:44:47,698 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 874.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:44:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 377. [2021-03-11 14:44:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4281914893617023) internal successors, (1289), 376 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1289 transitions. [2021-03-11 14:44:47,705 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1289 transitions. Word has length 22 [2021-03-11 14:44:47,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:47,705 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1289 transitions. [2021-03-11 14:44:47,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:47,705 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1289 transitions. [2021-03-11 14:44:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:47,706 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:47,706 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:47,706 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1555 [2021-03-11 14:44:47,706 INFO L428 AbstractCegarLoop]: === Iteration 1557 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:47,706 INFO L82 PathProgramCache]: Analyzing trace with hash 809967957, now seen corresponding path program 1551 times [2021-03-11 14:44:47,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:47,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116242306] [2021-03-11 14:44:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:47,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:47,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:47,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:47,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:47,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:47,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:47,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:47,923 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:47,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:48,044 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:48,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:48,177 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 15 [2021-03-11 14:44:48,182 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:48,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:48,311 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:48,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116242306] [2021-03-11 14:44:48,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:48,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:48,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373447274] [2021-03-11 14:44:48,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:48,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:48,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:48,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:48,423 INFO L87 Difference]: Start difference. First operand 377 states and 1289 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:48,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:48,757 INFO L93 Difference]: Finished difference Result 571 states and 1669 transitions. [2021-03-11 14:44:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:48,764 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:48,765 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:44:48,765 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:44:48,765 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 776.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:48,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:44:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 379. [2021-03-11 14:44:48,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.417989417989418) internal successors, (1292), 378 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1292 transitions. [2021-03-11 14:44:48,772 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1292 transitions. Word has length 22 [2021-03-11 14:44:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:48,772 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1292 transitions. [2021-03-11 14:44:48,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1292 transitions. [2021-03-11 14:44:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:48,773 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:48,773 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:48,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1556 [2021-03-11 14:44:48,773 INFO L428 AbstractCegarLoop]: === Iteration 1558 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 272112379, now seen corresponding path program 1552 times [2021-03-11 14:44:48,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:48,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567760315] [2021-03-11 14:44:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:48,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:48,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:48,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:48,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:48,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:48,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:48,883 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:48,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:48,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:48,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:49,098 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:49,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:49,215 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:49,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:49,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:49,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:49,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567760315] [2021-03-11 14:44:49,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:49,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:49,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730866468] [2021-03-11 14:44:49,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:49,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:49,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:49,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:49,422 INFO L87 Difference]: Start difference. First operand 379 states and 1292 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:49,780 INFO L93 Difference]: Finished difference Result 578 states and 1681 transitions. [2021-03-11 14:44:49,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:49,787 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:49,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:49,788 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:44:49,788 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:44:49,788 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 708.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:44:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 377. [2021-03-11 14:44:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.422872340425532) internal successors, (1287), 376 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1287 transitions. [2021-03-11 14:44:49,795 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1287 transitions. Word has length 22 [2021-03-11 14:44:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:49,795 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1287 transitions. [2021-03-11 14:44:49,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:49,795 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1287 transitions. [2021-03-11 14:44:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:49,796 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:49,796 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:49,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1557 [2021-03-11 14:44:49,796 INFO L428 AbstractCegarLoop]: === Iteration 1559 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:49,796 INFO L82 PathProgramCache]: Analyzing trace with hash 757452437, now seen corresponding path program 1553 times [2021-03-11 14:44:49,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:49,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685142553] [2021-03-11 14:44:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:49,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:49,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:49,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:49,840 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:49,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:49,919 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:49,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:50,024 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:50,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:50,152 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2021-03-11 14:44:50,156 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:50,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:50,320 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:50,324 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:50,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:50,442 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:50,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:50,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:50,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685142553] [2021-03-11 14:44:50,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:50,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:50,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083360489] [2021-03-11 14:44:50,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:50,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:50,551 INFO L87 Difference]: Start difference. First operand 377 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:50,921 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:50,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:50,962 INFO L93 Difference]: Finished difference Result 580 states and 1688 transitions. [2021-03-11 14:44:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:50,970 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:44:50,970 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:44:50,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 893.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:44:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 382. [2021-03-11 14:44:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4015748031496065) internal successors, (1296), 381 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1296 transitions. [2021-03-11 14:44:50,977 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1296 transitions. Word has length 22 [2021-03-11 14:44:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:50,977 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1296 transitions. [2021-03-11 14:44:50,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:50,977 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1296 transitions. [2021-03-11 14:44:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:50,978 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:50,978 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:50,978 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1558 [2021-03-11 14:44:50,978 INFO L428 AbstractCegarLoop]: === Iteration 1560 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:50,978 INFO L82 PathProgramCache]: Analyzing trace with hash -315632943, now seen corresponding path program 1554 times [2021-03-11 14:44:50,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:50,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905794403] [2021-03-11 14:44:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:50,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:50,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:50,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:50,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:51,008 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:51,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:51,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:51,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:51,114 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:44:51,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:44:51,194 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:51,350 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:51,354 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:51,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:51,477 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:51,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:51,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:51,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905794403] [2021-03-11 14:44:51,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:51,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:51,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764630616] [2021-03-11 14:44:51,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:51,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:51,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:51,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:51,590 INFO L87 Difference]: Start difference. First operand 382 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:51,999 INFO L93 Difference]: Finished difference Result 584 states and 1691 transitions. [2021-03-11 14:44:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:52,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:52,006 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:44:52,006 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:44:52,006 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 670.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:44:52,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 375. [2021-03-11 14:44:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.427807486631016) internal successors, (1282), 374 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:52,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1282 transitions. [2021-03-11 14:44:52,013 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1282 transitions. Word has length 22 [2021-03-11 14:44:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:52,013 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1282 transitions. [2021-03-11 14:44:52,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:52,013 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1282 transitions. [2021-03-11 14:44:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:52,013 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:52,013 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:52,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1559 [2021-03-11 14:44:52,013 INFO L428 AbstractCegarLoop]: === Iteration 1561 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1652413551, now seen corresponding path program 1555 times [2021-03-11 14:44:52,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:52,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32864892] [2021-03-11 14:44:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:52,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:52,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:52,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:52,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:52,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:52,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:52,112 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:52,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:52,200 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:52,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:52,324 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-03-11 14:44:52,328 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:52,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:52,430 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:52,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:52,562 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:52,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:52,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32864892] [2021-03-11 14:44:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:52,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:52,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304267295] [2021-03-11 14:44:52,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:52,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:52,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:52,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:52,688 INFO L87 Difference]: Start difference. First operand 375 states and 1282 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:53,131 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:53,175 INFO L93 Difference]: Finished difference Result 573 states and 1678 transitions. [2021-03-11 14:44:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:53,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:53,183 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:44:53,183 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:44:53,183 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 811.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:44:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 380. [2021-03-11 14:44:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.41688654353562) internal successors, (1295), 379 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1295 transitions. [2021-03-11 14:44:53,190 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1295 transitions. Word has length 22 [2021-03-11 14:44:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:53,190 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1295 transitions. [2021-03-11 14:44:53,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1295 transitions. [2021-03-11 14:44:53,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:53,191 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:53,191 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:53,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1560 [2021-03-11 14:44:53,191 INFO L428 AbstractCegarLoop]: === Iteration 1562 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:53,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 576702395, now seen corresponding path program 1556 times [2021-03-11 14:44:53,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:53,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121288001] [2021-03-11 14:44:53,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:53,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:53,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:53,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:53,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:53,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:53,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:53,310 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:53,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:53,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:53,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:53,551 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-03-11 14:44:53,555 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:53,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:53,650 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:53,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:53,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:53,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:53,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121288001] [2021-03-11 14:44:53,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:53,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:53,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686500105] [2021-03-11 14:44:53,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:53,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:53,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:53,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:53,862 INFO L87 Difference]: Start difference. First operand 380 states and 1295 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:54,287 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:54,342 INFO L93 Difference]: Finished difference Result 575 states and 1680 transitions. [2021-03-11 14:44:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:54,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:54,348 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:44:54,349 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:44:54,349 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 817.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:44:54,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 378. [2021-03-11 14:44:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4217506631299734) internal successors, (1290), 377 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1290 transitions. [2021-03-11 14:44:54,355 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1290 transitions. Word has length 22 [2021-03-11 14:44:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:54,355 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1290 transitions. [2021-03-11 14:44:54,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:54,356 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1290 transitions. [2021-03-11 14:44:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:54,356 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:54,356 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:54,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1561 [2021-03-11 14:44:54,356 INFO L428 AbstractCegarLoop]: === Iteration 1563 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:54,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1548462157, now seen corresponding path program 1557 times [2021-03-11 14:44:54,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:54,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798172695] [2021-03-11 14:44:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:54,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:54,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:54,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:54,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:54,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:54,396 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:54,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:54,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:54,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:54,571 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:54,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:54,704 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-03-11 14:44:54,709 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:54,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:54,879 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:54,883 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:54,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:55,015 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:55,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:55,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798172695] [2021-03-11 14:44:55,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:55,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:55,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967487300] [2021-03-11 14:44:55,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:55,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:55,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:55,139 INFO L87 Difference]: Start difference. First operand 378 states and 1290 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:55,601 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:44:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:55,646 INFO L93 Difference]: Finished difference Result 578 states and 1685 transitions. [2021-03-11 14:44:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:55,653 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:55,654 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:44:55,654 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:44:55,654 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 923.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:44:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 381. [2021-03-11 14:44:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.4078947368421053) internal successors, (1295), 380 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:55,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1295 transitions. [2021-03-11 14:44:55,661 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1295 transitions. Word has length 22 [2021-03-11 14:44:55,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:55,661 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1295 transitions. [2021-03-11 14:44:55,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:55,661 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1295 transitions. [2021-03-11 14:44:55,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:55,662 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:55,662 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:55,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1562 [2021-03-11 14:44:55,662 INFO L428 AbstractCegarLoop]: === Iteration 1564 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:55,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:55,662 INFO L82 PathProgramCache]: Analyzing trace with hash 597708603, now seen corresponding path program 1558 times [2021-03-11 14:44:55,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:55,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437782726] [2021-03-11 14:44:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:55,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:55,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:55,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:55,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:55,703 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:55,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:55,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:55,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:55,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:55,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:55,996 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:55,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:56,148 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-03-11 14:44:56,152 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:56,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:56,262 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:56,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:56,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437782726] [2021-03-11 14:44:56,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:56,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:56,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329014958] [2021-03-11 14:44:56,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:56,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:56,361 INFO L87 Difference]: Start difference. First operand 381 states and 1295 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:56,710 INFO L93 Difference]: Finished difference Result 584 states and 1694 transitions. [2021-03-11 14:44:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:56,716 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:56,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:56,718 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:44:56,718 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:44:56,718 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 762.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:44:56,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 378. [2021-03-11 14:44:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.413793103448276) internal successors, (1287), 377 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:56,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1287 transitions. [2021-03-11 14:44:56,724 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1287 transitions. Word has length 22 [2021-03-11 14:44:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:56,725 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1287 transitions. [2021-03-11 14:44:56,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1287 transitions. [2021-03-11 14:44:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:56,725 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:56,725 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:56,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1563 [2021-03-11 14:44:56,725 INFO L428 AbstractCegarLoop]: === Iteration 1565 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:56,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1611480781, now seen corresponding path program 1559 times [2021-03-11 14:44:56,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:56,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406050268] [2021-03-11 14:44:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:56,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:56,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:56,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:56,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:56,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:56,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:56,836 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:56,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:56,937 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:56,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:57,070 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-03-11 14:44:57,074 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:57,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:57,228 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:57,232 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:57,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:57,352 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:57,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:57,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406050268] [2021-03-11 14:44:57,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:57,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:57,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501466880] [2021-03-11 14:44:57,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:57,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:57,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:57,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:57,466 INFO L87 Difference]: Start difference. First operand 378 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:57,846 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:44:57,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:57,887 INFO L93 Difference]: Finished difference Result 584 states and 1696 transitions. [2021-03-11 14:44:57,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:57,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:57,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:57,896 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:44:57,896 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:44:57,896 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 890.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:44:57,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 383. [2021-03-11 14:44:57,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.392670157068063) internal successors, (1296), 382 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1296 transitions. [2021-03-11 14:44:57,903 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1296 transitions. Word has length 22 [2021-03-11 14:44:57,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:57,903 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 1296 transitions. [2021-03-11 14:44:57,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:57,903 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1296 transitions. [2021-03-11 14:44:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:57,903 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:57,903 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:57,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1564 [2021-03-11 14:44:57,903 INFO L428 AbstractCegarLoop]: === Iteration 1566 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:57,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:57,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1610401135, now seen corresponding path program 1560 times [2021-03-11 14:44:57,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:57,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512307839] [2021-03-11 14:44:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:57,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:57,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:57,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:57,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:57,952 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:44:57,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:44:58,029 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:44:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:44:58,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:44:58,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:44:58,267 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2021-03-11 14:44:58,272 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:44:58,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:44:58,432 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2021-03-11 14:44:58,436 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:44:58,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:44:58,564 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:58,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:58,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512307839] [2021-03-11 14:44:58,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:58,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016619880] [2021-03-11 14:44:58,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:58,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:58,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:58,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:58,674 INFO L87 Difference]: Start difference. First operand 383 states and 1296 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:44:59,058 INFO L93 Difference]: Finished difference Result 588 states and 1699 transitions. [2021-03-11 14:44:59,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:44:59,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:44:59,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:44:59,066 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:44:59,066 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:44:59,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 824.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:44:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:44:59,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 371. [2021-03-11 14:44:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.443243243243243) internal successors, (1274), 370 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1274 transitions. [2021-03-11 14:44:59,073 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1274 transitions. Word has length 22 [2021-03-11 14:44:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:44:59,073 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1274 transitions. [2021-03-11 14:44:59,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:44:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1274 transitions. [2021-03-11 14:44:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:44:59,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:44:59,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:44:59,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1565 [2021-03-11 14:44:59,074 INFO L428 AbstractCegarLoop]: === Iteration 1567 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:44:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:44:59,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1413696063, now seen corresponding path program 1561 times [2021-03-11 14:44:59,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:44:59,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007155221] [2021-03-11 14:44:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:44:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:44:59,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:59,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:44:59,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:59,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:44:59,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:44:59,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:44:59,166 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:44:59,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:44:59,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:44:59,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:44:59,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:44:59,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:44:59,495 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:44:59,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:44:59,616 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:44:59,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:44:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:44:59,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007155221] [2021-03-11 14:44:59,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:44:59,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:44:59,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93668481] [2021-03-11 14:44:59,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:44:59,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:44:59,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:44:59,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:44:59,693 INFO L87 Difference]: Start difference. First operand 371 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:00,016 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:00,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:00,050 INFO L93 Difference]: Finished difference Result 561 states and 1648 transitions. [2021-03-11 14:45:00,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:00,056 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:00,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:00,057 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:45:00,057 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:45:00,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 757.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:00,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:45:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 374. [2021-03-11 14:45:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4343163538873993) internal successors, (1281), 373 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1281 transitions. [2021-03-11 14:45:00,064 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1281 transitions. Word has length 22 [2021-03-11 14:45:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:00,064 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1281 transitions. [2021-03-11 14:45:00,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1281 transitions. [2021-03-11 14:45:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:00,065 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:00,065 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:00,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1566 [2021-03-11 14:45:00,065 INFO L428 AbstractCegarLoop]: === Iteration 1568 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:00,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:00,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1259203921, now seen corresponding path program 1562 times [2021-03-11 14:45:00,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:00,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117155872] [2021-03-11 14:45:00,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:00,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:00,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:00,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:00,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:00,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:00,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:00,158 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:00,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:00,247 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:00,358 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:00,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:00,452 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:00,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:00,565 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:00,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:00,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:00,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117155872] [2021-03-11 14:45:00,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:00,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:00,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870316679] [2021-03-11 14:45:00,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:00,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:00,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:00,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:00,676 INFO L87 Difference]: Start difference. First operand 374 states and 1281 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:01,069 INFO L93 Difference]: Finished difference Result 559 states and 1643 transitions. [2021-03-11 14:45:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:01,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:01,078 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:45:01,078 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:45:01,078 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 678.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:01,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:45:01,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 373. [2021-03-11 14:45:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4381720430107525) internal successors, (1279), 372 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1279 transitions. [2021-03-11 14:45:01,085 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1279 transitions. Word has length 22 [2021-03-11 14:45:01,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:01,085 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1279 transitions. [2021-03-11 14:45:01,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:01,085 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1279 transitions. [2021-03-11 14:45:01,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:01,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:01,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:01,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1567 [2021-03-11 14:45:01,086 INFO L428 AbstractCegarLoop]: === Iteration 1569 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:01,086 INFO L82 PathProgramCache]: Analyzing trace with hash -907349797, now seen corresponding path program 1563 times [2021-03-11 14:45:01,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:01,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923715638] [2021-03-11 14:45:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:01,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:01,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:01,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:01,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:01,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:01,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:01,181 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:01,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:01,279 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:01,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:01,406 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:01,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:01,576 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:01,580 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:01,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:01,725 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:01,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:01,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923715638] [2021-03-11 14:45:01,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:01,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93688496] [2021-03-11 14:45:01,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:01,855 INFO L87 Difference]: Start difference. First operand 373 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:02,371 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:02,425 INFO L93 Difference]: Finished difference Result 571 states and 1668 transitions. [2021-03-11 14:45:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:02,435 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:45:02,436 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:45:02,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 971.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:45:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 377. [2021-03-11 14:45:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4202127659574466) internal successors, (1286), 376 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1286 transitions. [2021-03-11 14:45:02,444 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1286 transitions. Word has length 22 [2021-03-11 14:45:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:02,444 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1286 transitions. [2021-03-11 14:45:02,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1286 transitions. [2021-03-11 14:45:02,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:02,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:02,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:02,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1568 [2021-03-11 14:45:02,445 INFO L428 AbstractCegarLoop]: === Iteration 1570 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:02,446 INFO L82 PathProgramCache]: Analyzing trace with hash -834042385, now seen corresponding path program 1564 times [2021-03-11 14:45:02,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:02,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259330362] [2021-03-11 14:45:02,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:02,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:02,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:02,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:02,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:02,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:02,549 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:02,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:02,699 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2021-03-11 14:45:02,704 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:02,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:02,843 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:02,847 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:02,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:02,997 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:03,002 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:03,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:03,113 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:03,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:03,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259330362] [2021-03-11 14:45:03,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:03,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:03,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363852436] [2021-03-11 14:45:03,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:03,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:03,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:03,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:03,237 INFO L87 Difference]: Start difference. First operand 377 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:03,735 INFO L93 Difference]: Finished difference Result 576 states and 1674 transitions. [2021-03-11 14:45:03,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:03,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:03,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:03,743 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:45:03,743 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:03,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 857.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:03,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 373. [2021-03-11 14:45:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.432795698924731) internal successors, (1277), 372 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1277 transitions. [2021-03-11 14:45:03,750 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:03,750 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1277 transitions. [2021-03-11 14:45:03,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1277 transitions. [2021-03-11 14:45:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:03,751 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:03,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:03,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1569 [2021-03-11 14:45:03,751 INFO L428 AbstractCegarLoop]: === Iteration 1571 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:03,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:03,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1941671787, now seen corresponding path program 1565 times [2021-03-11 14:45:03,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:03,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853897421] [2021-03-11 14:45:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:03,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:03,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:03,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:03,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:03,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:03,848 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:03,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:03,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:03,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:04,096 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:04,100 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:04,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:04,258 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:04,262 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:04,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:04,393 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:04,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853897421] [2021-03-11 14:45:04,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:04,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:04,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393411649] [2021-03-11 14:45:04,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:04,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:04,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:04,522 INFO L87 Difference]: Start difference. First operand 373 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:04,917 INFO L93 Difference]: Finished difference Result 565 states and 1652 transitions. [2021-03-11 14:45:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:04,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:04,927 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:45:04,927 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:04,927 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 838.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 375. [2021-03-11 14:45:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4224598930481283) internal successors, (1280), 374 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1280 transitions. [2021-03-11 14:45:04,934 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1280 transitions. Word has length 22 [2021-03-11 14:45:04,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:04,934 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1280 transitions. [2021-03-11 14:45:04,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1280 transitions. [2021-03-11 14:45:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:04,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:04,935 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:04,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1570 [2021-03-11 14:45:04,935 INFO L428 AbstractCegarLoop]: === Iteration 1572 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:04,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1403816209, now seen corresponding path program 1566 times [2021-03-11 14:45:04,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:04,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130800167] [2021-03-11 14:45:04,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:04,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:04,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:04,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:04,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:04,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:05,040 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:05,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:05,149 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:05,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:05,310 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:05,315 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:05,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:05,460 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:05,464 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:05,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:05,593 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:05,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:05,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130800167] [2021-03-11 14:45:05,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:05,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:05,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432684659] [2021-03-11 14:45:05,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:05,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:05,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:05,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:05,720 INFO L87 Difference]: Start difference. First operand 375 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:06,151 INFO L93 Difference]: Finished difference Result 572 states and 1664 transitions. [2021-03-11 14:45:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:06,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:06,158 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:45:06,159 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:45:06,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 831.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:06,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:45:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 371. [2021-03-11 14:45:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.437837837837838) internal successors, (1272), 370 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:06,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1272 transitions. [2021-03-11 14:45:06,166 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1272 transitions. Word has length 22 [2021-03-11 14:45:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:06,166 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1272 transitions. [2021-03-11 14:45:06,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1272 transitions. [2021-03-11 14:45:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:06,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:06,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:06,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1571 [2021-03-11 14:45:06,167 INFO L428 AbstractCegarLoop]: === Iteration 1573 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1452697381, now seen corresponding path program 1567 times [2021-03-11 14:45:06,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:06,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488863447] [2021-03-11 14:45:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:06,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:06,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:06,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:06,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:06,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:06,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:06,263 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:06,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:06,370 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:06,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:06,466 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:06,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:06,571 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:06,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:06,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:06,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:06,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488863447] [2021-03-11 14:45:06,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:06,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:06,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844396254] [2021-03-11 14:45:06,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:06,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:06,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:06,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:06,829 INFO L87 Difference]: Start difference. First operand 371 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:07,304 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:07,339 INFO L93 Difference]: Finished difference Result 551 states and 1625 transitions. [2021-03-11 14:45:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:07,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:07,346 INFO L225 Difference]: With dead ends: 551 [2021-03-11 14:45:07,346 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:45:07,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 797.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:45:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 373. [2021-03-11 14:45:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4301075268817205) internal successors, (1276), 372 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1276 transitions. [2021-03-11 14:45:07,353 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1276 transitions. Word has length 22 [2021-03-11 14:45:07,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:07,353 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1276 transitions. [2021-03-11 14:45:07,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1276 transitions. [2021-03-11 14:45:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:07,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:07,354 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:07,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1572 [2021-03-11 14:45:07,354 INFO L428 AbstractCegarLoop]: === Iteration 1574 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1298205239, now seen corresponding path program 1568 times [2021-03-11 14:45:07,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:07,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102097462] [2021-03-11 14:45:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:07,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:07,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:07,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:07,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:07,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:07,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:07,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:07,543 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:07,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:07,637 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:07,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:07,749 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:07,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:07,888 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:07,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:08,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102097462] [2021-03-11 14:45:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:08,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817364512] [2021-03-11 14:45:08,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:08,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:08,012 INFO L87 Difference]: Start difference. First operand 373 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:08,392 INFO L93 Difference]: Finished difference Result 549 states and 1620 transitions. [2021-03-11 14:45:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:08,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:08,399 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:45:08,399 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:45:08,399 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 724.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:45:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 372. [2021-03-11 14:45:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4339622641509435) internal successors, (1274), 371 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1274 transitions. [2021-03-11 14:45:08,405 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1274 transitions. Word has length 22 [2021-03-11 14:45:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:08,405 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1274 transitions. [2021-03-11 14:45:08,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1274 transitions. [2021-03-11 14:45:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:08,406 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:08,406 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:08,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1573 [2021-03-11 14:45:08,406 INFO L428 AbstractCegarLoop]: === Iteration 1575 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1241832061, now seen corresponding path program 1569 times [2021-03-11 14:45:08,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:08,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072668774] [2021-03-11 14:45:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:08,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:08,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:08,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:08,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:08,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:08,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:08,484 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:08,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:08,573 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:08,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:08,666 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:08,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:08,773 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:08,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:08,898 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:08,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:09,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072668774] [2021-03-11 14:45:09,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:09,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:09,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024657892] [2021-03-11 14:45:09,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:09,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:09,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:09,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:09,018 INFO L87 Difference]: Start difference. First operand 372 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:09,453 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:45:09,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:09,495 INFO L93 Difference]: Finished difference Result 553 states and 1629 transitions. [2021-03-11 14:45:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:09,503 INFO L225 Difference]: With dead ends: 553 [2021-03-11 14:45:09,503 INFO L226 Difference]: Without dead ends: 542 [2021-03-11 14:45:09,503 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 768.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:09,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-03-11 14:45:09,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 374. [2021-03-11 14:45:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.423592493297587) internal successors, (1277), 373 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1277 transitions. [2021-03-11 14:45:09,510 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:09,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:09,510 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1277 transitions. [2021-03-11 14:45:09,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1277 transitions. [2021-03-11 14:45:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:09,510 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:09,510 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:09,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1574 [2021-03-11 14:45:09,511 INFO L428 AbstractCegarLoop]: === Iteration 1576 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:09,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:09,511 INFO L82 PathProgramCache]: Analyzing trace with hash 739290509, now seen corresponding path program 1570 times [2021-03-11 14:45:09,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:09,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225203074] [2021-03-11 14:45:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:09,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:09,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:09,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:09,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:09,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:09,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:09,607 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:09,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:09,707 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:09,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:09,799 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:09,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:09,911 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:09,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:10,046 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:10,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:10,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225203074] [2021-03-11 14:45:10,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:10,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:10,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357957243] [2021-03-11 14:45:10,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:10,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:10,166 INFO L87 Difference]: Start difference. First operand 374 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:10,599 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:10,658 INFO L93 Difference]: Finished difference Result 552 states and 1625 transitions. [2021-03-11 14:45:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:10,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:10,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:10,667 INFO L225 Difference]: With dead ends: 552 [2021-03-11 14:45:10,667 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:45:10,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 814.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:45:10,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 372. [2021-03-11 14:45:10,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.431266846361186) internal successors, (1273), 371 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:10,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1273 transitions. [2021-03-11 14:45:10,673 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1273 transitions. Word has length 22 [2021-03-11 14:45:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:10,673 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1273 transitions. [2021-03-11 14:45:10,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1273 transitions. [2021-03-11 14:45:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:10,674 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:10,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:10,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1575 [2021-03-11 14:45:10,674 INFO L428 AbstractCegarLoop]: === Iteration 1577 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:10,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:10,674 INFO L82 PathProgramCache]: Analyzing trace with hash -204113651, now seen corresponding path program 1571 times [2021-03-11 14:45:10,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:10,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617623896] [2021-03-11 14:45:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:10,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:10,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:10,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:10,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:10,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:10,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:10,761 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:10,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:10,853 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:10,941 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:45:10,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:45:11,037 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:11,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:11,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:11,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:11,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617623896] [2021-03-11 14:45:11,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:11,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:11,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453335361] [2021-03-11 14:45:11,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:11,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:11,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:11,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:11,241 INFO L87 Difference]: Start difference. First operand 372 states and 1273 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:11,561 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:45:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:11,611 INFO L93 Difference]: Finished difference Result 548 states and 1617 transitions. [2021-03-11 14:45:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:11,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:11,619 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:45:11,620 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:45:11,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 654.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:11,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:45:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 373. [2021-03-11 14:45:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.424731182795699) internal successors, (1274), 372 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1274 transitions. [2021-03-11 14:45:11,627 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1274 transitions. Word has length 22 [2021-03-11 14:45:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:11,627 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1274 transitions. [2021-03-11 14:45:11,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:11,628 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1274 transitions. [2021-03-11 14:45:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:11,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:11,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:11,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1576 [2021-03-11 14:45:11,628 INFO L428 AbstractCegarLoop]: === Iteration 1578 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:11,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1406827307, now seen corresponding path program 1572 times [2021-03-11 14:45:11,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:11,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506937880] [2021-03-11 14:45:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:11,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:11,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:11,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:11,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:11,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:11,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:11,731 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:11,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:11,844 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:11,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:11,939 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:45:11,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:45:12,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:12,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:12,190 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:12,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506937880] [2021-03-11 14:45:12,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:12,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:12,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061512445] [2021-03-11 14:45:12,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:12,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:12,321 INFO L87 Difference]: Start difference. First operand 373 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:12,774 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:12,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:12,838 INFO L93 Difference]: Finished difference Result 549 states and 1618 transitions. [2021-03-11 14:45:12,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:12,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:12,848 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:45:12,848 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:45:12,848 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 862.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:12,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:45:12,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 371. [2021-03-11 14:45:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4351351351351354) internal successors, (1271), 370 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1271 transitions. [2021-03-11 14:45:12,856 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1271 transitions. Word has length 22 [2021-03-11 14:45:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:12,856 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1271 transitions. [2021-03-11 14:45:12,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1271 transitions. [2021-03-11 14:45:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:12,856 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:12,856 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:12,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1577 [2021-03-11 14:45:12,856 INFO L428 AbstractCegarLoop]: === Iteration 1579 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:12,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:12,857 INFO L82 PathProgramCache]: Analyzing trace with hash -241302877, now seen corresponding path program 1573 times [2021-03-11 14:45:12,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:12,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368697738] [2021-03-11 14:45:12,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:12,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:12,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:12,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:12,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:12,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:12,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:12,974 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:12,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:13,102 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:13,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:13,249 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:13,253 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:13,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:13,366 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:13,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:13,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:13,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:13,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368697738] [2021-03-11 14:45:13,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:13,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:13,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703277179] [2021-03-11 14:45:13,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:13,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:13,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:13,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:13,614 INFO L87 Difference]: Start difference. First operand 371 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:14,030 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:45:14,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:14,076 INFO L93 Difference]: Finished difference Result 567 states and 1662 transitions. [2021-03-11 14:45:14,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:14,085 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:45:14,085 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:14,085 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 912.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 376. [2021-03-11 14:45:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.424) internal successors, (1284), 375 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1284 transitions. [2021-03-11 14:45:14,092 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1284 transitions. Word has length 22 [2021-03-11 14:45:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:14,092 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1284 transitions. [2021-03-11 14:45:14,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1284 transitions. [2021-03-11 14:45:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:14,093 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:14,093 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:14,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1578 [2021-03-11 14:45:14,093 INFO L428 AbstractCegarLoop]: === Iteration 1580 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:14,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:14,093 INFO L82 PathProgramCache]: Analyzing trace with hash -743844429, now seen corresponding path program 1574 times [2021-03-11 14:45:14,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:14,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172526648] [2021-03-11 14:45:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:14,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:14,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:14,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:14,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:14,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:14,199 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:14,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:14,304 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:14,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:14,433 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:14,437 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:14,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:14,553 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:14,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:14,705 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:14,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:14,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172526648] [2021-03-11 14:45:14,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:14,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:14,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910069524] [2021-03-11 14:45:14,844 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:14,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:14,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:14,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:14,844 INFO L87 Difference]: Start difference. First operand 376 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:15,321 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:15,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:15,373 INFO L93 Difference]: Finished difference Result 566 states and 1658 transitions. [2021-03-11 14:45:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:15,380 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:45:15,380 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:45:15,381 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 896.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:45:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 374. [2021-03-11 14:45:15,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.428954423592493) internal successors, (1279), 373 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1279 transitions. [2021-03-11 14:45:15,387 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1279 transitions. Word has length 22 [2021-03-11 14:45:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:15,387 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1279 transitions. [2021-03-11 14:45:15,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1279 transitions. [2021-03-11 14:45:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:15,388 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:15,388 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:15,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1579 [2021-03-11 14:45:15,388 INFO L428 AbstractCegarLoop]: === Iteration 1581 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1865481243, now seen corresponding path program 1575 times [2021-03-11 14:45:15,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229964713] [2021-03-11 14:45:15,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:15,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:15,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:15,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:15,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:15,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:15,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:15,480 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:15,579 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:15,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:15,711 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:15,716 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:15,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:15,882 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:15,887 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:15,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:16,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:16,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:16,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:16,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229964713] [2021-03-11 14:45:16,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:16,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:16,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713522227] [2021-03-11 14:45:16,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:16,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:16,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:16,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:16,155 INFO L87 Difference]: Start difference. First operand 374 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:16,619 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:45:16,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:16,660 INFO L93 Difference]: Finished difference Result 575 states and 1676 transitions. [2021-03-11 14:45:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:16,668 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:45:16,668 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:45:16,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 930.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:45:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 378. [2021-03-11 14:45:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4111405835543764) internal successors, (1286), 377 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1286 transitions. [2021-03-11 14:45:16,675 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1286 transitions. Word has length 22 [2021-03-11 14:45:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:16,675 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1286 transitions. [2021-03-11 14:45:16,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1286 transitions. [2021-03-11 14:45:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:16,676 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:16,676 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:16,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1580 [2021-03-11 14:45:16,676 INFO L428 AbstractCegarLoop]: === Iteration 1582 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:16,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:16,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1938788655, now seen corresponding path program 1576 times [2021-03-11 14:45:16,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:16,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751650232] [2021-03-11 14:45:16,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:16,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:16,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:16,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:16,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:16,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:16,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:16,771 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:16,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:16,873 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:16,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:17,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:17,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:17,182 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:17,188 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:17,348 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:45:17,353 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:17,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:17,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:17,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751650232] [2021-03-11 14:45:17,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:17,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:17,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123536113] [2021-03-11 14:45:17,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:17,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:17,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:17,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:17,485 INFO L87 Difference]: Start difference. First operand 378 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:17,858 INFO L93 Difference]: Finished difference Result 580 states and 1682 transitions. [2021-03-11 14:45:17,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:17,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:17,864 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:45:17,865 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:45:17,865 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 860.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:17,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:45:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 374. [2021-03-11 14:45:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.420911528150134) internal successors, (1276), 373 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1276 transitions. [2021-03-11 14:45:17,871 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1276 transitions. Word has length 22 [2021-03-11 14:45:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:17,871 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1276 transitions. [2021-03-11 14:45:17,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1276 transitions. [2021-03-11 14:45:17,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:17,872 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:17,872 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:17,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1581 [2021-03-11 14:45:17,872 INFO L428 AbstractCegarLoop]: === Iteration 1583 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:17,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:17,872 INFO L82 PathProgramCache]: Analyzing trace with hash 347192881, now seen corresponding path program 1577 times [2021-03-11 14:45:17,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:17,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367553651] [2021-03-11 14:45:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:17,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:17,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:17,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:17,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:17,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:17,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:17,955 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:17,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:18,048 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:18,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:18,182 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:18,187 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:18,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:18,346 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:45:18,350 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:18,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:18,475 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:18,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:18,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367553651] [2021-03-11 14:45:18,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:18,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:18,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780241766] [2021-03-11 14:45:18,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:18,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:18,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:18,604 INFO L87 Difference]: Start difference. First operand 374 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:19,024 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:19,065 INFO L93 Difference]: Finished difference Result 572 states and 1666 transitions. [2021-03-11 14:45:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:19,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:19,073 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:45:19,073 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:45:19,073 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 891.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:45:19,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 377. [2021-03-11 14:45:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4069148936170213) internal successors, (1281), 376 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1281 transitions. [2021-03-11 14:45:19,080 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1281 transitions. Word has length 22 [2021-03-11 14:45:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:19,080 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1281 transitions. [2021-03-11 14:45:19,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1281 transitions. [2021-03-11 14:45:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:19,081 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:19,081 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:19,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1582 [2021-03-11 14:45:19,081 INFO L428 AbstractCegarLoop]: === Iteration 1584 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:19,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1663350185, now seen corresponding path program 1578 times [2021-03-11 14:45:19,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:19,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288985429] [2021-03-11 14:45:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:19,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:19,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:19,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:19,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:19,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:19,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:19,175 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:19,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:19,274 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:19,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:19,403 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:19,407 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:19,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:19,520 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:19,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:19,621 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:19,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:19,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288985429] [2021-03-11 14:45:19,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:19,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:19,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270030429] [2021-03-11 14:45:19,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:19,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:19,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:19,720 INFO L87 Difference]: Start difference. First operand 377 states and 1281 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:20,170 INFO L93 Difference]: Finished difference Result 578 states and 1675 transitions. [2021-03-11 14:45:20,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:20,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:20,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:20,177 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:45:20,177 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:20,177 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 709.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:20,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 371. [2021-03-11 14:45:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4297297297297296) internal successors, (1269), 370 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1269 transitions. [2021-03-11 14:45:20,184 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1269 transitions. Word has length 22 [2021-03-11 14:45:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:20,184 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1269 transitions. [2021-03-11 14:45:20,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1269 transitions. [2021-03-11 14:45:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:20,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:20,185 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:20,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1583 [2021-03-11 14:45:20,185 INFO L428 AbstractCegarLoop]: === Iteration 1585 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:20,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:20,185 INFO L82 PathProgramCache]: Analyzing trace with hash 238785489, now seen corresponding path program 1579 times [2021-03-11 14:45:20,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:20,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268719731] [2021-03-11 14:45:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:20,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:20,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:20,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:20,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:20,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:20,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:20,275 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:20,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:20,388 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:20,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:20,521 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:45:20,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:45:20,637 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:20,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:20,779 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:20,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:20,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268719731] [2021-03-11 14:45:20,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:20,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:20,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490675294] [2021-03-11 14:45:20,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:20,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:20,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:20,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:20,908 INFO L87 Difference]: Start difference. First operand 371 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:21,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:21,347 INFO L93 Difference]: Finished difference Result 556 states and 1632 transitions. [2021-03-11 14:45:21,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:21,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:21,354 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:45:21,354 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:45:21,354 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 786.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:21,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:45:21,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 374. [2021-03-11 14:45:21,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.420911528150134) internal successors, (1276), 373 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1276 transitions. [2021-03-11 14:45:21,361 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1276 transitions. Word has length 22 [2021-03-11 14:45:21,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:21,361 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1276 transitions. [2021-03-11 14:45:21,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1276 transitions. [2021-03-11 14:45:21,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:21,361 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:21,362 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:21,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1584 [2021-03-11 14:45:21,362 INFO L428 AbstractCegarLoop]: === Iteration 1586 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1849726447, now seen corresponding path program 1580 times [2021-03-11 14:45:21,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:21,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067947468] [2021-03-11 14:45:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:21,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:21,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:21,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:21,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:21,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:21,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:21,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:21,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:21,562 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:21,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:21,689 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:45:21,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:45:21,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:21,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:21,925 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:21,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:22,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067947468] [2021-03-11 14:45:22,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:22,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:22,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078854502] [2021-03-11 14:45:22,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:22,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:22,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:22,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:22,054 INFO L87 Difference]: Start difference. First operand 374 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:22,475 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:22,530 INFO L93 Difference]: Finished difference Result 557 states and 1633 transitions. [2021-03-11 14:45:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:22,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:22,538 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:45:22,538 INFO L226 Difference]: Without dead ends: 546 [2021-03-11 14:45:22,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 852.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-03-11 14:45:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 373. [2021-03-11 14:45:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.424731182795699) internal successors, (1274), 372 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1274 transitions. [2021-03-11 14:45:22,545 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1274 transitions. Word has length 22 [2021-03-11 14:45:22,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:22,545 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1274 transitions. [2021-03-11 14:45:22,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1274 transitions. [2021-03-11 14:45:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:22,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:22,546 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:22,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1585 [2021-03-11 14:45:22,546 INFO L428 AbstractCegarLoop]: === Iteration 1587 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:22,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:22,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1949397687, now seen corresponding path program 1581 times [2021-03-11 14:45:22,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:22,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961579760] [2021-03-11 14:45:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:22,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:22,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:22,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:22,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:22,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:22,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:22,641 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:22,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:22,744 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:22,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:22,876 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:22,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:23,040 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:45:23,045 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:23,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:23,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:23,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:23,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961579760] [2021-03-11 14:45:23,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:23,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:23,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204330339] [2021-03-11 14:45:23,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:23,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:23,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:23,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:23,333 INFO L87 Difference]: Start difference. First operand 373 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:23,716 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:45:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:23,764 INFO L93 Difference]: Finished difference Result 563 states and 1644 transitions. [2021-03-11 14:45:23,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:23,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:23,774 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:45:23,774 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:45:23,774 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 876.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:45:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 375. [2021-03-11 14:45:23,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.414438502673797) internal successors, (1277), 374 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:23,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1277 transitions. [2021-03-11 14:45:23,781 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:23,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:23,782 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1277 transitions. [2021-03-11 14:45:23,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:23,782 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1277 transitions. [2021-03-11 14:45:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:23,782 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:23,782 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:23,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1586 [2021-03-11 14:45:23,782 INFO L428 AbstractCegarLoop]: === Iteration 1588 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1807714031, now seen corresponding path program 1582 times [2021-03-11 14:45:23,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:23,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520010521] [2021-03-11 14:45:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:23,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:23,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:23,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:23,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:23,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:23,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:23,893 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:23,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:23,992 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:23,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:24,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:24,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:24,257 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:45:24,261 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:24,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:24,405 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:24,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:24,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:24,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520010521] [2021-03-11 14:45:24,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:24,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:24,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441705139] [2021-03-11 14:45:24,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:24,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:24,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:24,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:24,549 INFO L87 Difference]: Start difference. First operand 375 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:24,964 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:45:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:25,039 INFO L93 Difference]: Finished difference Result 570 states and 1656 transitions. [2021-03-11 14:45:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:25,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:25,048 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:45:25,048 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:45:25,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 846.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:45:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 373. [2021-03-11 14:45:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:45:25,055 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:45:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:25,055 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:45:25,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:25,055 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:45:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:25,055 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:25,055 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:25,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1587 [2021-03-11 14:45:25,056 INFO L428 AbstractCegarLoop]: === Iteration 1589 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1938894583, now seen corresponding path program 1583 times [2021-03-11 14:45:25,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:25,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799354783] [2021-03-11 14:45:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:25,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:25,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:25,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:25,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:25,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:25,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:25,162 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:25,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:25,286 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:25,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:25,410 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:25,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:25,571 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:45:25,576 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:25,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:25,722 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:25,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:25,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799354783] [2021-03-11 14:45:25,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:25,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:25,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647992273] [2021-03-11 14:45:25,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:25,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:25,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:25,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:25,855 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:26,345 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:45:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:26,386 INFO L93 Difference]: Finished difference Result 566 states and 1649 transitions. [2021-03-11 14:45:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:26,393 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:26,394 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:45:26,394 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:26,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 948.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 376. [2021-03-11 14:45:26,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4053333333333335) internal successors, (1277), 375 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1277 transitions. [2021-03-11 14:45:26,401 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:26,401 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1277 transitions. [2021-03-11 14:45:26,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1277 transitions. [2021-03-11 14:45:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:26,402 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:26,402 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:26,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1588 [2021-03-11 14:45:26,402 INFO L428 AbstractCegarLoop]: === Iteration 1590 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:26,402 INFO L82 PathProgramCache]: Analyzing trace with hash 207276177, now seen corresponding path program 1584 times [2021-03-11 14:45:26,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:26,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384938626] [2021-03-11 14:45:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:26,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:26,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:26,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:26,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:26,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:26,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:26,494 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:45:26,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:45:26,598 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:26,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:26,727 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:26,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:26,882 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:45:26,887 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:26,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:27,018 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:27,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:27,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384938626] [2021-03-11 14:45:27,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:27,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:27,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101273329] [2021-03-11 14:45:27,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:27,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:27,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:27,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:27,139 INFO L87 Difference]: Start difference. First operand 376 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:27,527 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:45:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:27,598 INFO L93 Difference]: Finished difference Result 572 states and 1658 transitions. [2021-03-11 14:45:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:27,604 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:27,605 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:45:27,606 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:45:27,606 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 808.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:27,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:45:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 369. [2021-03-11 14:45:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.4347826086956523) internal successors, (1264), 368 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:27,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1264 transitions. [2021-03-11 14:45:27,612 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1264 transitions. Word has length 22 [2021-03-11 14:45:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:27,613 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 1264 transitions. [2021-03-11 14:45:27,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1264 transitions. [2021-03-11 14:45:27,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:27,613 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:27,613 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:27,613 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1589 [2021-03-11 14:45:27,613 INFO L428 AbstractCegarLoop]: === Iteration 1591 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:27,614 INFO L82 PathProgramCache]: Analyzing trace with hash -352917973, now seen corresponding path program 1585 times [2021-03-11 14:45:27,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:27,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800176204] [2021-03-11 14:45:27,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:27,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:27,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:27,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:27,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:27,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:27,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:27,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:27,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:27,789 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:27,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:27,932 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:27,937 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:27,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:28,051 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:28,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:28,187 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:28,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:28,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800176204] [2021-03-11 14:45:28,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:28,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:28,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549320224] [2021-03-11 14:45:28,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:28,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:28,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:28,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:28,318 INFO L87 Difference]: Start difference. First operand 369 states and 1264 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:28,773 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:28,810 INFO L93 Difference]: Finished difference Result 567 states and 1662 transitions. [2021-03-11 14:45:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:28,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:28,817 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:45:28,818 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:45:28,818 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 856.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:45:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 374. [2021-03-11 14:45:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.428954423592493) internal successors, (1279), 373 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1279 transitions. [2021-03-11 14:45:28,825 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1279 transitions. Word has length 22 [2021-03-11 14:45:28,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:28,825 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1279 transitions. [2021-03-11 14:45:28,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1279 transitions. [2021-03-11 14:45:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:28,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:28,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:28,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1590 [2021-03-11 14:45:28,826 INFO L428 AbstractCegarLoop]: === Iteration 1592 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash -198425831, now seen corresponding path program 1586 times [2021-03-11 14:45:28,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:28,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55033218] [2021-03-11 14:45:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:28,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:28,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:28,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:28,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:28,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:28,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:28,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:28,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:28,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:28,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:29,101 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:29,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:29,198 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:29,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:29,317 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:29,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:29,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55033218] [2021-03-11 14:45:29,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:29,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:29,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344576271] [2021-03-11 14:45:29,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:29,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:29,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:29,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:29,422 INFO L87 Difference]: Start difference. First operand 374 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:29,769 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:29,826 INFO L93 Difference]: Finished difference Result 565 states and 1657 transitions. [2021-03-11 14:45:29,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:29,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:29,834 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:45:29,834 INFO L226 Difference]: Without dead ends: 555 [2021-03-11 14:45:29,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 668.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-03-11 14:45:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 373. [2021-03-11 14:45:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.432795698924731) internal successors, (1277), 372 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:29,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1277 transitions. [2021-03-11 14:45:29,841 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:29,841 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1277 transitions. [2021-03-11 14:45:29,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:29,842 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1277 transitions. [2021-03-11 14:45:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:29,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:29,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:29,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1591 [2021-03-11 14:45:29,842 INFO L428 AbstractCegarLoop]: === Iteration 1593 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash 153428293, now seen corresponding path program 1587 times [2021-03-11 14:45:29,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:29,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468199443] [2021-03-11 14:45:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:29,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:29,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:29,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:29,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:29,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:29,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:29,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:29,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:30,017 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:30,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:30,153 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:30,158 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:30,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:30,328 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:30,332 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:30,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:30,458 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:30,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:30,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468199443] [2021-03-11 14:45:30,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:30,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:30,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093995277] [2021-03-11 14:45:30,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:30,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:30,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:30,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:30,581 INFO L87 Difference]: Start difference. First operand 373 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:31,053 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:31,101 INFO L93 Difference]: Finished difference Result 577 states and 1682 transitions. [2021-03-11 14:45:31,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:31,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:31,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:31,110 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:45:31,110 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:45:31,110 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 901.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:45:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 377. [2021-03-11 14:45:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4148936170212765) internal successors, (1284), 376 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1284 transitions. [2021-03-11 14:45:31,117 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1284 transitions. Word has length 22 [2021-03-11 14:45:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:31,117 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1284 transitions. [2021-03-11 14:45:31,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1284 transitions. [2021-03-11 14:45:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:31,118 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:31,118 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:31,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1592 [2021-03-11 14:45:31,118 INFO L428 AbstractCegarLoop]: === Iteration 1594 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash 226735705, now seen corresponding path program 1588 times [2021-03-11 14:45:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243140708] [2021-03-11 14:45:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:31,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:31,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:31,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:31,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:31,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:31,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:31,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:31,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:31,290 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:31,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:31,429 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:31,434 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:31,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:31,612 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:31,617 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:31,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:31,768 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:31,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:31,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243140708] [2021-03-11 14:45:31,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:31,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:31,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341083487] [2021-03-11 14:45:31,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:31,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:31,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:31,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:31,901 INFO L87 Difference]: Start difference. First operand 377 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:32,354 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:32,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:32,414 INFO L93 Difference]: Finished difference Result 582 states and 1688 transitions. [2021-03-11 14:45:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:32,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:32,421 INFO L225 Difference]: With dead ends: 582 [2021-03-11 14:45:32,421 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:45:32,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 858.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:45:32,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 373. [2021-03-11 14:45:32,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4274193548387095) internal successors, (1275), 372 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:32,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1275 transitions. [2021-03-11 14:45:32,428 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1275 transitions. Word has length 22 [2021-03-11 14:45:32,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:32,429 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1275 transitions. [2021-03-11 14:45:32,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1275 transitions. [2021-03-11 14:45:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:32,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:32,429 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:32,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1593 [2021-03-11 14:45:32,429 INFO L428 AbstractCegarLoop]: === Iteration 1595 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1292517419, now seen corresponding path program 1589 times [2021-03-11 14:45:32,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:32,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069605244] [2021-03-11 14:45:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:32,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:32,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:32,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:32,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:32,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:32,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:32,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:32,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:32,535 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:32,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:32,619 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:32,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:32,751 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:32,756 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:32,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:32,897 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:32,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:33,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069605244] [2021-03-11 14:45:33,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:33,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:33,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89550644] [2021-03-11 14:45:33,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:33,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:33,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:33,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:33,022 INFO L87 Difference]: Start difference. First operand 373 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:33,380 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:33,422 INFO L93 Difference]: Finished difference Result 571 states and 1666 transitions. [2021-03-11 14:45:33,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:33,430 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:33,431 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:45:33,431 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:45:33,431 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 672.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:45:33,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 375. [2021-03-11 14:45:33,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4171122994652405) internal successors, (1278), 374 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1278 transitions. [2021-03-11 14:45:33,438 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1278 transitions. Word has length 22 [2021-03-11 14:45:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:33,438 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1278 transitions. [2021-03-11 14:45:33,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1278 transitions. [2021-03-11 14:45:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:33,439 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:33,439 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:33,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1594 [2021-03-11 14:45:33,439 INFO L428 AbstractCegarLoop]: === Iteration 1596 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:33,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:33,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1830372997, now seen corresponding path program 1590 times [2021-03-11 14:45:33,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:33,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096973680] [2021-03-11 14:45:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:33,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:33,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:33,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:33,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:33,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:33,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:33,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:33,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:33,625 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:33,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:33,771 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:33,776 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:33,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:33,934 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:33,938 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:33,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:34,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:34,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:34,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096973680] [2021-03-11 14:45:34,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:34,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:34,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954761665] [2021-03-11 14:45:34,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:34,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:34,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:34,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:34,189 INFO L87 Difference]: Start difference. First operand 375 states and 1278 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:34,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:34,580 INFO L93 Difference]: Finished difference Result 578 states and 1678 transitions. [2021-03-11 14:45:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:34,588 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:45:34,588 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:45:34,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 802.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:45:34,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 371. [2021-03-11 14:45:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4324324324324325) internal successors, (1270), 370 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1270 transitions. [2021-03-11 14:45:34,595 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1270 transitions. Word has length 22 [2021-03-11 14:45:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:34,595 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1270 transitions. [2021-03-11 14:45:34,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1270 transitions. [2021-03-11 14:45:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:34,596 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:34,596 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:34,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1595 [2021-03-11 14:45:34,596 INFO L428 AbstractCegarLoop]: === Iteration 1597 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:34,596 INFO L82 PathProgramCache]: Analyzing trace with hash 680273541, now seen corresponding path program 1591 times [2021-03-11 14:45:34,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:34,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9715930] [2021-03-11 14:45:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:34,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:34,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:34,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:34,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:34,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:34,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:34,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:34,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:34,763 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:34,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:34,852 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:34,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:34,971 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:34,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:35,108 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:35,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:35,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9715930] [2021-03-11 14:45:35,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:35,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:35,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886609592] [2021-03-11 14:45:35,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:35,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:35,222 INFO L87 Difference]: Start difference. First operand 371 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:35,685 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:35,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:35,724 INFO L93 Difference]: Finished difference Result 560 states and 1646 transitions. [2021-03-11 14:45:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:35,731 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:35,733 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:45:35,733 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:45:35,733 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 771.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:35,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:45:35,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 373. [2021-03-11 14:45:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.424731182795699) internal successors, (1274), 372 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1274 transitions. [2021-03-11 14:45:35,740 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1274 transitions. Word has length 22 [2021-03-11 14:45:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:35,740 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1274 transitions. [2021-03-11 14:45:35,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1274 transitions. [2021-03-11 14:45:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:35,740 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:35,740 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:35,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1596 [2021-03-11 14:45:35,741 INFO L428 AbstractCegarLoop]: === Iteration 1598 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:35,741 INFO L82 PathProgramCache]: Analyzing trace with hash 834765683, now seen corresponding path program 1592 times [2021-03-11 14:45:35,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:35,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755852946] [2021-03-11 14:45:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:35,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:35,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:35,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:35,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:35,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:35,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:35,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:35,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:35,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:35,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:35,996 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:35,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:36,120 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:36,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:36,255 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:36,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:36,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755852946] [2021-03-11 14:45:36,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:36,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:36,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569472938] [2021-03-11 14:45:36,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:36,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:36,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:36,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:36,378 INFO L87 Difference]: Start difference. First operand 373 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:36,732 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:36,781 INFO L93 Difference]: Finished difference Result 558 states and 1641 transitions. [2021-03-11 14:45:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:36,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:36,789 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:45:36,789 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:45:36,789 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 707.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:45:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 372. [2021-03-11 14:45:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4285714285714284) internal successors, (1272), 371 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1272 transitions. [2021-03-11 14:45:36,796 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1272 transitions. Word has length 22 [2021-03-11 14:45:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:36,796 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1272 transitions. [2021-03-11 14:45:36,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1272 transitions. [2021-03-11 14:45:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:36,797 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:36,797 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:36,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1597 [2021-03-11 14:45:36,797 INFO L428 AbstractCegarLoop]: === Iteration 1599 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:36,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1507909635, now seen corresponding path program 1593 times [2021-03-11 14:45:36,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:36,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548433876] [2021-03-11 14:45:36,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:36,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:36,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:36,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:36,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:36,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:36,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:36,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:36,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:36,965 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:36,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:37,054 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:37,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:37,162 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:37,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:37,307 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:37,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:37,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548433876] [2021-03-11 14:45:37,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:37,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:37,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158688389] [2021-03-11 14:45:37,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:37,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:37,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:37,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:37,428 INFO L87 Difference]: Start difference. First operand 372 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:37,891 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:37,932 INFO L93 Difference]: Finished difference Result 563 states and 1654 transitions. [2021-03-11 14:45:37,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:37,941 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:45:37,941 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:45:37,942 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 799.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:37,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:45:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 375. [2021-03-11 14:45:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.414438502673797) internal successors, (1277), 374 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1277 transitions. [2021-03-11 14:45:37,949 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1277 transitions. Word has length 22 [2021-03-11 14:45:37,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:37,949 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1277 transitions. [2021-03-11 14:45:37,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1277 transitions. [2021-03-11 14:45:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:37,950 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:37,950 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:37,950 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1598 [2021-03-11 14:45:37,950 INFO L428 AbstractCegarLoop]: === Iteration 1600 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:37,950 INFO L82 PathProgramCache]: Analyzing trace with hash -350585037, now seen corresponding path program 1594 times [2021-03-11 14:45:37,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:37,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177800138] [2021-03-11 14:45:37,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:37,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:37,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:37,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:37,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:37,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:37,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:38,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:38,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:38,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:38,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:38,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:38,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:38,311 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:38,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:38,447 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:38,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:38,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177800138] [2021-03-11 14:45:38,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:38,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:38,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400352760] [2021-03-11 14:45:38,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:38,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:38,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:38,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:38,575 INFO L87 Difference]: Start difference. First operand 375 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:39,041 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:39,086 INFO L93 Difference]: Finished difference Result 556 states and 1647 transitions. [2021-03-11 14:45:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:39,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:39,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:39,095 INFO L225 Difference]: With dead ends: 556 [2021-03-11 14:45:39,095 INFO L226 Difference]: Without dead ends: 540 [2021-03-11 14:45:39,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 795.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:39,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-03-11 14:45:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 372. [2021-03-11 14:45:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4258760107816713) internal successors, (1271), 371 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1271 transitions. [2021-03-11 14:45:39,102 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1271 transitions. Word has length 22 [2021-03-11 14:45:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:39,102 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1271 transitions. [2021-03-11 14:45:39,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1271 transitions. [2021-03-11 14:45:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:39,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:39,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:39,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1599 [2021-03-11 14:45:39,103 INFO L428 AbstractCegarLoop]: === Iteration 1601 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:39,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:39,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1341111949, now seen corresponding path program 1595 times [2021-03-11 14:45:39,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:39,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011128633] [2021-03-11 14:45:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:39,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:39,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:39,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:39,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:39,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:39,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:39,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:39,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:39,260 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:39,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:39,351 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:39,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:39,510 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:39,514 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:39,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:39,636 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:39,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011128633] [2021-03-11 14:45:39,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:39,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:39,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557886777] [2021-03-11 14:45:39,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:39,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:39,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:39,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:39,750 INFO L87 Difference]: Start difference. First operand 372 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:40,110 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:40,150 INFO L93 Difference]: Finished difference Result 559 states and 1643 transitions. [2021-03-11 14:45:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:40,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:40,159 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:45:40,159 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:45:40,159 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 720.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:45:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 373. [2021-03-11 14:45:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:45:40,165 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:45:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:40,166 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:45:40,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:45:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:40,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:40,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:40,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1600 [2021-03-11 14:45:40,166 INFO L428 AbstractCegarLoop]: === Iteration 1602 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:40,167 INFO L82 PathProgramCache]: Analyzing trace with hash -807684587, now seen corresponding path program 1596 times [2021-03-11 14:45:40,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:40,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786277832] [2021-03-11 14:45:40,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:40,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:40,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:40,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:40,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:40,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:40,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:40,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:40,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:40,338 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:40,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:40,425 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:40,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:40,593 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:40,598 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:40,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:40,746 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:40,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:40,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786277832] [2021-03-11 14:45:40,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:40,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:40,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111316470] [2021-03-11 14:45:40,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:40,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:40,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:40,875 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:41,327 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:41,384 INFO L93 Difference]: Finished difference Result 554 states and 1642 transitions. [2021-03-11 14:45:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:41,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:41,393 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:45:41,393 INFO L226 Difference]: Without dead ends: 539 [2021-03-11 14:45:41,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 881.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-03-11 14:45:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 371. [2021-03-11 14:45:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4297297297297296) internal successors, (1269), 370 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:41,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1269 transitions. [2021-03-11 14:45:41,401 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1269 transitions. Word has length 22 [2021-03-11 14:45:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:41,401 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1269 transitions. [2021-03-11 14:45:41,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1269 transitions. [2021-03-11 14:45:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:41,401 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:41,401 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:41,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1601 [2021-03-11 14:45:41,402 INFO L428 AbstractCegarLoop]: === Iteration 1603 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:41,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1303922723, now seen corresponding path program 1597 times [2021-03-11 14:45:41,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:41,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261451343] [2021-03-11 14:45:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:41,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:41,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:41,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:41,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:41,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:41,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:41,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:41,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:41,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:41,615 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:41,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:41,686 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:41,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:41,814 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:41,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:41,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261451343] [2021-03-11 14:45:41,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:41,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118566256] [2021-03-11 14:45:41,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:41,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:41,958 INFO L87 Difference]: Start difference. First operand 371 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:42,442 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:42,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:42,483 INFO L93 Difference]: Finished difference Result 585 states and 1707 transitions. [2021-03-11 14:45:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:42,492 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:45:42,492 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:45:42,492 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 732.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:45:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 378. [2021-03-11 14:45:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.416445623342175) internal successors, (1288), 377 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1288 transitions. [2021-03-11 14:45:42,499 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1288 transitions. Word has length 22 [2021-03-11 14:45:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:42,500 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1288 transitions. [2021-03-11 14:45:42,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1288 transitions. [2021-03-11 14:45:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:42,500 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:42,500 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:42,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1602 [2021-03-11 14:45:42,500 INFO L428 AbstractCegarLoop]: === Iteration 1604 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:42,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:42,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1833719975, now seen corresponding path program 1598 times [2021-03-11 14:45:42,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:42,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134729797] [2021-03-11 14:45:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:42,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:42,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:42,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:42,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:42,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:42,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:42,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:42,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:42,689 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:42,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:42,801 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:42,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:42,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:42,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:43,064 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:45:43,070 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:43,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:43,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:43,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134729797] [2021-03-11 14:45:43,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:43,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918768494] [2021-03-11 14:45:43,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:43,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:43,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:43,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:43,217 INFO L87 Difference]: Start difference. First operand 378 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:43,693 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:43,741 INFO L93 Difference]: Finished difference Result 587 states and 1708 transitions. [2021-03-11 14:45:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:43,748 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:43,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:43,749 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:45:43,749 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:45:43,749 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 897.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:45:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 375. [2021-03-11 14:45:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4224598930481283) internal successors, (1280), 374 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1280 transitions. [2021-03-11 14:45:43,757 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1280 transitions. Word has length 22 [2021-03-11 14:45:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:43,757 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1280 transitions. [2021-03-11 14:45:43,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1280 transitions. [2021-03-11 14:45:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:43,757 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:43,757 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:43,758 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1603 [2021-03-11 14:45:43,758 INFO L428 AbstractCegarLoop]: === Iteration 1605 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:43,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:43,758 INFO L82 PathProgramCache]: Analyzing trace with hash -296515131, now seen corresponding path program 1599 times [2021-03-11 14:45:43,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:43,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565751784] [2021-03-11 14:45:43,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:43,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:43,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:43,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:43,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:43,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:43,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:43,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:43,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:43,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:43,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:44,048 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:44,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:44,227 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:44,233 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:44,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:44,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:44,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:44,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565751784] [2021-03-11 14:45:44,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:44,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:44,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201150751] [2021-03-11 14:45:44,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:44,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:44,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:44,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:44,508 INFO L87 Difference]: Start difference. First operand 375 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:45,042 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:45,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:45,088 INFO L93 Difference]: Finished difference Result 585 states and 1701 transitions. [2021-03-11 14:45:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:45,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:45,097 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:45:45,097 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:45:45,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 903.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:45:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 379. [2021-03-11 14:45:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4047619047619047) internal successors, (1287), 378 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1287 transitions. [2021-03-11 14:45:45,104 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1287 transitions. Word has length 22 [2021-03-11 14:45:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:45,104 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1287 transitions. [2021-03-11 14:45:45,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1287 transitions. [2021-03-11 14:45:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:45,104 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:45,104 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:45,105 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1604 [2021-03-11 14:45:45,105 INFO L428 AbstractCegarLoop]: === Iteration 1606 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:45,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash -223207719, now seen corresponding path program 1600 times [2021-03-11 14:45:45,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:45,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682944210] [2021-03-11 14:45:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:45,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:45,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:45,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:45,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:45,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:45,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:45,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:45,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:45,276 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:45,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:45,376 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:45,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:45,528 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:45,532 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:45,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:45,626 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:45,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:45,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:45,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682944210] [2021-03-11 14:45:45,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:45,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:45,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988011316] [2021-03-11 14:45:45,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:45,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:45,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:45,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:45,710 INFO L87 Difference]: Start difference. First operand 379 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:46,081 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:46,146 INFO L93 Difference]: Finished difference Result 590 states and 1707 transitions. [2021-03-11 14:45:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:46,153 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:46,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:46,154 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:45:46,154 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:45:46,155 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 685.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:46,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:45:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 375. [2021-03-11 14:45:46,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.411764705882353) internal successors, (1276), 374 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1276 transitions. [2021-03-11 14:45:46,162 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1276 transitions. Word has length 22 [2021-03-11 14:45:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:46,162 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1276 transitions. [2021-03-11 14:45:46,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:46,162 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1276 transitions. [2021-03-11 14:45:46,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:46,163 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:46,163 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:46,163 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1605 [2021-03-11 14:45:46,163 INFO L428 AbstractCegarLoop]: === Iteration 1607 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash 438809797, now seen corresponding path program 1601 times [2021-03-11 14:45:46,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:46,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346760026] [2021-03-11 14:45:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:46,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:46,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:46,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:46,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:46,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:46,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:46,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:46,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:46,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:46,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:46,408 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:46,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:46,524 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:46,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:46,659 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:46,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:46,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346760026] [2021-03-11 14:45:46,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:46,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:46,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937482354] [2021-03-11 14:45:46,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:46,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:46,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:46,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:46,789 INFO L87 Difference]: Start difference. First operand 375 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:47,307 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:47,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:47,366 INFO L93 Difference]: Finished difference Result 591 states and 1711 transitions. [2021-03-11 14:45:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:47,375 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:45:47,375 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:45:47,376 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 807.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:47,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:45:47,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 381. [2021-03-11 14:45:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.386842105263158) internal successors, (1287), 380 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1287 transitions. [2021-03-11 14:45:47,383 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1287 transitions. Word has length 22 [2021-03-11 14:45:47,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:47,383 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1287 transitions. [2021-03-11 14:45:47,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:47,383 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1287 transitions. [2021-03-11 14:45:47,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:47,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:47,383 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:47,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1606 [2021-03-11 14:45:47,384 INFO L428 AbstractCegarLoop]: === Iteration 1608 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:47,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1294116451, now seen corresponding path program 1602 times [2021-03-11 14:45:47,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:47,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567565925] [2021-03-11 14:45:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:47,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:47,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:47,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:47,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:47,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:47,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:47,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:47,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:47,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:45:47,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:45:47,644 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:47,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:47,764 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:47,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:47,885 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:47,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:47,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567565925] [2021-03-11 14:45:47,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:47,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:47,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165120973] [2021-03-11 14:45:47,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:47,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:47,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:47,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:47,990 INFO L87 Difference]: Start difference. First operand 381 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:48,299 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:48,354 INFO L93 Difference]: Finished difference Result 586 states and 1697 transitions. [2021-03-11 14:45:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:48,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:48,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:48,361 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:45:48,361 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:45:48,361 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 675.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:48,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:45:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 371. [2021-03-11 14:45:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.424324324324324) internal successors, (1267), 370 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1267 transitions. [2021-03-11 14:45:48,368 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1267 transitions. Word has length 22 [2021-03-11 14:45:48,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:48,368 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1267 transitions. [2021-03-11 14:45:48,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:48,368 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1267 transitions. [2021-03-11 14:45:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:48,369 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:48,369 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:48,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1607 [2021-03-11 14:45:48,369 INFO L428 AbstractCegarLoop]: === Iteration 1609 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1784011089, now seen corresponding path program 1603 times [2021-03-11 14:45:48,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:48,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475642451] [2021-03-11 14:45:48,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:48,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:48,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:48,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:48,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:48,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:48,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:48,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:48,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:48,543 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:48,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:48,688 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:48,693 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:48,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:48,888 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:48,892 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:48,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:49,040 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:49,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:49,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475642451] [2021-03-11 14:45:49,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:49,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:49,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92246784] [2021-03-11 14:45:49,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:49,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:49,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:49,170 INFO L87 Difference]: Start difference. First operand 371 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:49,649 INFO L93 Difference]: Finished difference Result 571 states and 1667 transitions. [2021-03-11 14:45:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:49,657 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:45:49,657 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:45:49,657 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 868.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:45:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 374. [2021-03-11 14:45:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.415549597855228) internal successors, (1274), 373 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1274 transitions. [2021-03-11 14:45:49,664 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1274 transitions. Word has length 22 [2021-03-11 14:45:49,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:49,664 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1274 transitions. [2021-03-11 14:45:49,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:49,664 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1274 transitions. [2021-03-11 14:45:49,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:49,665 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:49,665 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:49,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1608 [2021-03-11 14:45:49,665 INFO L428 AbstractCegarLoop]: === Iteration 1610 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:49,665 INFO L82 PathProgramCache]: Analyzing trace with hash -364785447, now seen corresponding path program 1604 times [2021-03-11 14:45:49,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:49,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079557595] [2021-03-11 14:45:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:49,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:49,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:49,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:49,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:49,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:49,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:49,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:49,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:49,836 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:49,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:49,993 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:49,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:45:49,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:45:50,194 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:45:50,199 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:50,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:50,372 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:45:50,378 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:50,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:50,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079557595] [2021-03-11 14:45:50,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:50,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:50,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007746370] [2021-03-11 14:45:50,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:50,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:50,518 INFO L87 Difference]: Start difference. First operand 374 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:51,064 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:51,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:51,109 INFO L93 Difference]: Finished difference Result 575 states and 1674 transitions. [2021-03-11 14:45:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:51,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:51,115 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:45:51,115 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:45:51,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1012.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:45:51,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 373. [2021-03-11 14:45:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:45:51,123 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:45:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:51,123 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:45:51,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:45:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:51,123 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:51,123 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:51,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1609 [2021-03-11 14:45:51,123 INFO L428 AbstractCegarLoop]: === Iteration 1611 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:51,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash 183573235, now seen corresponding path program 1605 times [2021-03-11 14:45:51,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:51,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420124968] [2021-03-11 14:45:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:51,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:51,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:51,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:51,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:51,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:51,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:51,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:51,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:51,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:51,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:51,432 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:51,437 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:51,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:51,600 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:51,605 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:51,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:51,757 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:51,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:51,915 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:45:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:51,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420124968] [2021-03-11 14:45:51,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:51,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:51,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366559713] [2021-03-11 14:45:51,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:51,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:51,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:51,918 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:52,287 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:52,334 INFO L93 Difference]: Finished difference Result 573 states and 1669 transitions. [2021-03-11 14:45:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:52,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:52,345 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:45:52,345 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:45:52,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 873.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:45:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 375. [2021-03-11 14:45:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.409090909090909) internal successors, (1275), 374 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1275 transitions. [2021-03-11 14:45:52,352 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1275 transitions. Word has length 22 [2021-03-11 14:45:52,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:52,353 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1275 transitions. [2021-03-11 14:45:52,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:52,353 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1275 transitions. [2021-03-11 14:45:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:52,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:52,354 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:52,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1610 [2021-03-11 14:45:52,354 INFO L428 AbstractCegarLoop]: === Iteration 1612 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:52,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:52,354 INFO L82 PathProgramCache]: Analyzing trace with hash -354282343, now seen corresponding path program 1606 times [2021-03-11 14:45:52,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:52,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313292422] [2021-03-11 14:45:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:52,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:52,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:52,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:52,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:52,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:52,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:52,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:52,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:52,534 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:52,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:52,669 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:52,674 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:52,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:52,834 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:45:52,838 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:52,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:52,997 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:45:53,002 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:53,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:53,152 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:45:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:53,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313292422] [2021-03-11 14:45:53,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:53,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:53,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038988505] [2021-03-11 14:45:53,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:53,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:53,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:53,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:53,155 INFO L87 Difference]: Start difference. First operand 375 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:53,555 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:45:53,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:53,638 INFO L93 Difference]: Finished difference Result 580 states and 1681 transitions. [2021-03-11 14:45:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:53,646 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:45:53,646 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:45:53,646 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 883.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:45:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 373. [2021-03-11 14:45:53,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.413978494623656) internal successors, (1270), 372 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1270 transitions. [2021-03-11 14:45:53,654 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1270 transitions. Word has length 22 [2021-03-11 14:45:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:53,654 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1270 transitions. [2021-03-11 14:45:53,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1270 transitions. [2021-03-11 14:45:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:53,654 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:53,654 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:53,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1611 [2021-03-11 14:45:53,655 INFO L428 AbstractCegarLoop]: === Iteration 1613 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:53,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:53,655 INFO L82 PathProgramCache]: Analyzing trace with hash 141560819, now seen corresponding path program 1607 times [2021-03-11 14:45:53,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:53,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784860057] [2021-03-11 14:45:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:53,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:53,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:53,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:53,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:53,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:53,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:53,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:53,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:53,849 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:53,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:54,005 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:54,009 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:54,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:54,142 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:54,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:54,296 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:54,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:54,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784860057] [2021-03-11 14:45:54,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:54,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:54,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790687697] [2021-03-11 14:45:54,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:54,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:54,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:54,443 INFO L87 Difference]: Start difference. First operand 373 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:54,914 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:54,961 INFO L93 Difference]: Finished difference Result 585 states and 1695 transitions. [2021-03-11 14:45:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:54,969 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:54,970 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:45:54,970 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:45:54,971 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 956.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:45:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 379. [2021-03-11 14:45:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.388888888888889) internal successors, (1281), 378 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1281 transitions. [2021-03-11 14:45:54,978 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1281 transitions. Word has length 22 [2021-03-11 14:45:54,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:54,978 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1281 transitions. [2021-03-11 14:45:54,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1281 transitions. [2021-03-11 14:45:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:54,979 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:54,979 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:54,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1612 [2021-03-11 14:45:54,979 INFO L428 AbstractCegarLoop]: === Iteration 1614 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:54,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1752501777, now seen corresponding path program 1608 times [2021-03-11 14:45:54,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:54,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386853466] [2021-03-11 14:45:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:54,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:54,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:54,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:55,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:55,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:55,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:55,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:55,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:45:55,170 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:45:55,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:45:55,316 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:45:55,321 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:55,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:55,453 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:55,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:55,602 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:55,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:55,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386853466] [2021-03-11 14:45:55,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:55,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:55,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805961406] [2021-03-11 14:45:55,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:55,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:55,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:55,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:55,735 INFO L87 Difference]: Start difference. First operand 379 states and 1281 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:56,150 INFO L93 Difference]: Finished difference Result 580 states and 1681 transitions. [2021-03-11 14:45:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:56,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:56,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:56,158 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:45:56,158 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:45:56,158 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 815.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:45:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 369. [2021-03-11 14:45:56,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.4293478260869565) internal successors, (1262), 368 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1262 transitions. [2021-03-11 14:45:56,165 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1262 transitions. Word has length 22 [2021-03-11 14:45:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:56,165 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 1262 transitions. [2021-03-11 14:45:56,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1262 transitions. [2021-03-11 14:45:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:56,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:56,166 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:56,166 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1613 [2021-03-11 14:45:56,166 INFO L428 AbstractCegarLoop]: === Iteration 1615 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:56,166 INFO L82 PathProgramCache]: Analyzing trace with hash 511468481, now seen corresponding path program 1609 times [2021-03-11 14:45:56,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:56,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031152998] [2021-03-11 14:45:56,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:56,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:56,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:56,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:56,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:56,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:56,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:56,264 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:45:56,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:45:56,344 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:56,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:56,445 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:56,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:56,545 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:56,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:56,672 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:56,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:56,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031152998] [2021-03-11 14:45:56,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:56,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:56,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183164339] [2021-03-11 14:45:56,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:56,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:56,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:56,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:56,752 INFO L87 Difference]: Start difference. First operand 369 states and 1262 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:57,208 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:45:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:57,250 INFO L93 Difference]: Finished difference Result 540 states and 1596 transitions. [2021-03-11 14:45:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:57,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:57,259 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:45:57,259 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:45:57,259 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 745.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:57,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:45:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 372. [2021-03-11 14:45:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4231805929919137) internal successors, (1270), 371 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1270 transitions. [2021-03-11 14:45:57,266 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1270 transitions. Word has length 22 [2021-03-11 14:45:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:57,266 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1270 transitions. [2021-03-11 14:45:57,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:57,266 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1270 transitions. [2021-03-11 14:45:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:57,267 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:57,267 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:57,267 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1614 [2021-03-11 14:45:57,267 INFO L428 AbstractCegarLoop]: === Iteration 1616 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash 665960623, now seen corresponding path program 1610 times [2021-03-11 14:45:57,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:57,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400803055] [2021-03-11 14:45:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:57,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:57,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:57,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:57,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:57,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:57,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:57,359 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:45:57,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:45:57,423 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:57,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:57,508 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:57,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:57,618 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:45:57,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:45:57,755 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:57,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:57,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400803055] [2021-03-11 14:45:57,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:57,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:57,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964397167] [2021-03-11 14:45:57,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:57,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:57,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:57,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:57,867 INFO L87 Difference]: Start difference. First operand 372 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:58,214 INFO L93 Difference]: Finished difference Result 538 states and 1591 transitions. [2021-03-11 14:45:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:58,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:58,222 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:45:58,222 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:45:58,222 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 652.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:58,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:45:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 371. [2021-03-11 14:45:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.427027027027027) internal successors, (1268), 370 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1268 transitions. [2021-03-11 14:45:58,229 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1268 transitions. Word has length 22 [2021-03-11 14:45:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:58,229 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1268 transitions. [2021-03-11 14:45:58,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:58,229 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1268 transitions. [2021-03-11 14:45:58,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:58,230 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:58,230 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:58,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1615 [2021-03-11 14:45:58,230 INFO L428 AbstractCegarLoop]: === Iteration 1617 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:58,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:58,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1088969373, now seen corresponding path program 1611 times [2021-03-11 14:45:58,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:58,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128691596] [2021-03-11 14:45:58,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:58,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:58,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:58,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:58,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:58,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:58,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:58,327 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:45:58,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:45:58,399 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:58,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:58,496 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:58,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:58,620 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:58,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:58,761 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:58,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:45:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:45:58,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128691596] [2021-03-11 14:45:58,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:45:58,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:45:58,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960664637] [2021-03-11 14:45:58,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:45:58,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:45:58,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:45:58,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:45:58,897 INFO L87 Difference]: Start difference. First operand 371 states and 1268 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:59,356 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:45:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:45:59,400 INFO L93 Difference]: Finished difference Result 542 states and 1600 transitions. [2021-03-11 14:45:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:45:59,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:45:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:45:59,408 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:45:59,408 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:45:59,408 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 824.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:45:59,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:45:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 373. [2021-03-11 14:45:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4166666666666665) internal successors, (1271), 372 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:59,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1271 transitions. [2021-03-11 14:45:59,414 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1271 transitions. Word has length 22 [2021-03-11 14:45:59,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:45:59,415 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1271 transitions. [2021-03-11 14:45:59,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:45:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1271 transitions. [2021-03-11 14:45:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:45:59,415 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:45:59,415 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:45:59,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1616 [2021-03-11 14:45:59,415 INFO L428 AbstractCegarLoop]: === Iteration 1618 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:45:59,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:45:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1591510925, now seen corresponding path program 1612 times [2021-03-11 14:45:59,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:45:59,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696025269] [2021-03-11 14:45:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:45:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:45:59,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:59,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:45:59,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:59,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:45:59,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:45:59,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:45:59,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:45:59,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:45:59,577 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:45:59,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:45:59,681 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:45:59,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:45:59,795 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:45:59,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:45:59,926 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:45:59,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:00,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:00,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696025269] [2021-03-11 14:46:00,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:00,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:00,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852341299] [2021-03-11 14:46:00,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:00,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:00,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:00,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:00,056 INFO L87 Difference]: Start difference. First operand 373 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:00,522 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:00,581 INFO L93 Difference]: Finished difference Result 541 states and 1596 transitions. [2021-03-11 14:46:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:00,589 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:00,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:00,590 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:46:00,590 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:46:00,590 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 814.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:46:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 371. [2021-03-11 14:46:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.424324324324324) internal successors, (1267), 370 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1267 transitions. [2021-03-11 14:46:00,597 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:00,597 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1267 transitions. [2021-03-11 14:46:00,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1267 transitions. [2021-03-11 14:46:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:00,598 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:00,598 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:00,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1617 [2021-03-11 14:46:00,598 INFO L428 AbstractCegarLoop]: === Iteration 1619 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1760052211, now seen corresponding path program 1613 times [2021-03-11 14:46:00,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:00,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453893451] [2021-03-11 14:46:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:00,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:00,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:00,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:00,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:00,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:00,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:00,698 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:00,775 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:46:00,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:46:00,877 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:00,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:01,004 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:01,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:01,162 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:01,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:01,305 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:01,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453893451] [2021-03-11 14:46:01,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:01,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:01,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17529762] [2021-03-11 14:46:01,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:01,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:01,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:01,308 INFO L87 Difference]: Start difference. First operand 371 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:01,699 INFO L93 Difference]: Finished difference Result 537 states and 1588 transitions. [2021-03-11 14:46:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:01,707 INFO L225 Difference]: With dead ends: 537 [2021-03-11 14:46:01,707 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:46:01,707 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 772.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:46:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 372. [2021-03-11 14:46:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.417789757412399) internal successors, (1268), 371 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1268 transitions. [2021-03-11 14:46:01,714 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1268 transitions. Word has length 22 [2021-03-11 14:46:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:01,714 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1268 transitions. [2021-03-11 14:46:01,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:01,714 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1268 transitions. [2021-03-11 14:46:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:01,714 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:01,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:01,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1618 [2021-03-11 14:46:01,715 INFO L428 AbstractCegarLoop]: === Iteration 1620 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:01,715 INFO L82 PathProgramCache]: Analyzing trace with hash -923974127, now seen corresponding path program 1614 times [2021-03-11 14:46:01,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:01,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607422662] [2021-03-11 14:46:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:01,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:01,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:01,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:01,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:01,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:01,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:01,811 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:01,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:01,876 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-03-11 14:46:01,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-11 14:46:01,962 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:01,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:02,070 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:02,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:02,229 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:46:02,234 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:02,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:02,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607422662] [2021-03-11 14:46:02,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:02,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:02,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612935472] [2021-03-11 14:46:02,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:02,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:02,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:02,370 INFO L87 Difference]: Start difference. First operand 372 states and 1268 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:02,834 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:02,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:02,896 INFO L93 Difference]: Finished difference Result 538 states and 1589 transitions. [2021-03-11 14:46:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:02,905 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:46:02,905 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:46:02,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 822.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:46:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 370. [2021-03-11 14:46:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.4281842818428183) internal successors, (1265), 369 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1265 transitions. [2021-03-11 14:46:02,912 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1265 transitions. Word has length 22 [2021-03-11 14:46:02,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:02,912 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 1265 transitions. [2021-03-11 14:46:02,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1265 transitions. [2021-03-11 14:46:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:02,913 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:02,913 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:02,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1619 [2021-03-11 14:46:02,913 INFO L428 AbstractCegarLoop]: === Iteration 1621 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash -528767317, now seen corresponding path program 1615 times [2021-03-11 14:46:02,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:02,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523510304] [2021-03-11 14:46:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:02,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:02,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:02,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:02,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:02,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:02,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:03,014 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:03,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:03,086 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:03,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:03,180 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:03,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:03,299 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:03,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:03,434 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:03,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:03,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523510304] [2021-03-11 14:46:03,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:03,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:03,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209983696] [2021-03-11 14:46:03,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:03,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:03,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:03,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:03,570 INFO L87 Difference]: Start difference. First operand 370 states and 1265 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:04,098 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:46:04,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:04,138 INFO L93 Difference]: Finished difference Result 543 states and 1602 transitions. [2021-03-11 14:46:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:04,145 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:04,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:04,147 INFO L225 Difference]: With dead ends: 543 [2021-03-11 14:46:04,147 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:46:04,147 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 816.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:04,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:46:04,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 372. [2021-03-11 14:46:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.420485175202156) internal successors, (1269), 371 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1269 transitions. [2021-03-11 14:46:04,154 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1269 transitions. Word has length 22 [2021-03-11 14:46:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:04,154 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1269 transitions. [2021-03-11 14:46:04,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1269 transitions. [2021-03-11 14:46:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:04,154 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:04,154 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:04,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1620 [2021-03-11 14:46:04,155 INFO L428 AbstractCegarLoop]: === Iteration 1622 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash -374275175, now seen corresponding path program 1616 times [2021-03-11 14:46:04,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:04,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314769665] [2021-03-11 14:46:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:04,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:04,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:04,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:04,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:04,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:04,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:04,253 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:04,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:04,328 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:04,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:04,418 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:04,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:04,540 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:04,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:04,696 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:04,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:04,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314769665] [2021-03-11 14:46:04,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:04,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:04,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574644950] [2021-03-11 14:46:04,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:04,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:04,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:04,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:04,841 INFO L87 Difference]: Start difference. First operand 372 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:05,272 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:46:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:05,324 INFO L93 Difference]: Finished difference Result 541 states and 1597 transitions. [2021-03-11 14:46:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:05,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:05,333 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:46:05,333 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:46:05,334 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 761.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:46:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 371. [2021-03-11 14:46:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.424324324324324) internal successors, (1267), 370 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1267 transitions. [2021-03-11 14:46:05,340 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:05,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:05,341 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1267 transitions. [2021-03-11 14:46:05,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:05,341 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1267 transitions. [2021-03-11 14:46:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:05,341 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:05,341 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:05,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1621 [2021-03-11 14:46:05,341 INFO L428 AbstractCegarLoop]: === Iteration 1623 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:05,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:05,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1578016803, now seen corresponding path program 1617 times [2021-03-11 14:46:05,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:05,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176271149] [2021-03-11 14:46:05,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:05,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:05,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:05,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:05,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:05,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:05,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:05,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:05,443 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:05,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:05,515 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:05,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:05,605 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:05,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:05,716 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:05,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:05,859 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:05,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:06,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:06,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176271149] [2021-03-11 14:46:06,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:06,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:06,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016582989] [2021-03-11 14:46:06,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:06,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:06,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:06,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:06,008 INFO L87 Difference]: Start difference. First operand 371 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:06,496 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:46:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:06,539 INFO L93 Difference]: Finished difference Result 546 states and 1610 transitions. [2021-03-11 14:46:06,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:06,546 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:06,547 INFO L225 Difference]: With dead ends: 546 [2021-03-11 14:46:06,547 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:46:06,547 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 808.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:46:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 374. [2021-03-11 14:46:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4101876675603218) internal successors, (1272), 373 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1272 transitions. [2021-03-11 14:46:06,554 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1272 transitions. Word has length 22 [2021-03-11 14:46:06,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:06,554 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1272 transitions. [2021-03-11 14:46:06,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1272 transitions. [2021-03-11 14:46:06,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:06,555 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:06,555 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:06,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1622 [2021-03-11 14:46:06,555 INFO L428 AbstractCegarLoop]: === Iteration 1624 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:06,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1559625895, now seen corresponding path program 1618 times [2021-03-11 14:46:06,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:06,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028983851] [2021-03-11 14:46:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:06,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:06,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:06,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:06,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:06,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:06,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:06,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:06,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:06,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:06,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:06,809 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:06,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:06,918 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:06,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:07,058 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:07,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:07,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028983851] [2021-03-11 14:46:07,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:07,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:07,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894545466] [2021-03-11 14:46:07,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:07,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:07,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:07,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:07,189 INFO L87 Difference]: Start difference. First operand 374 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:07,642 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:46:07,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:07,691 INFO L93 Difference]: Finished difference Result 539 states and 1603 transitions. [2021-03-11 14:46:07,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:07,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:07,700 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:46:07,700 INFO L226 Difference]: Without dead ends: 523 [2021-03-11 14:46:07,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 806.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:07,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-03-11 14:46:07,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 371. [2021-03-11 14:46:07,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4216216216216218) internal successors, (1266), 370 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:07,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1266 transitions. [2021-03-11 14:46:07,708 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1266 transitions. Word has length 22 [2021-03-11 14:46:07,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:07,708 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1266 transitions. [2021-03-11 14:46:07,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1266 transitions. [2021-03-11 14:46:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:07,709 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:07,709 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:07,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1623 [2021-03-11 14:46:07,709 INFO L428 AbstractCegarLoop]: === Iteration 1625 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:07,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash 132071091, now seen corresponding path program 1619 times [2021-03-11 14:46:07,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:07,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423487571] [2021-03-11 14:46:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:07,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:07,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:07,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:07,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:07,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:07,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:07,810 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:07,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:07,881 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:07,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:07,971 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:07,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:08,125 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:08,130 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:08,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:08,255 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:08,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:08,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423487571] [2021-03-11 14:46:08,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:08,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:08,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726269988] [2021-03-11 14:46:08,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:08,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:08,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:08,361 INFO L87 Difference]: Start difference. First operand 371 states and 1266 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:08,671 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:46:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:08,715 INFO L93 Difference]: Finished difference Result 542 states and 1599 transitions. [2021-03-11 14:46:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:08,722 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:08,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:08,723 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:46:08,723 INFO L226 Difference]: Without dead ends: 533 [2021-03-11 14:46:08,723 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 722.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-03-11 14:46:08,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 372. [2021-03-11 14:46:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4150943396226414) internal successors, (1267), 371 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1267 transitions. [2021-03-11 14:46:08,730 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:08,730 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1267 transitions. [2021-03-11 14:46:08,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1267 transitions. [2021-03-11 14:46:08,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:08,731 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:08,731 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:08,731 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1624 [2021-03-11 14:46:08,731 INFO L428 AbstractCegarLoop]: === Iteration 1626 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:08,731 INFO L82 PathProgramCache]: Analyzing trace with hash -2016725445, now seen corresponding path program 1620 times [2021-03-11 14:46:08,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:08,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574111220] [2021-03-11 14:46:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:08,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:08,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:08,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:08,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:08,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:08,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:08,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:08,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:08,902 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:08,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:08,991 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:08,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:09,159 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:09,164 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:09,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:09,304 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:09,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:09,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574111220] [2021-03-11 14:46:09,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:09,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:09,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780072037] [2021-03-11 14:46:09,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:09,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:09,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:09,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:09,442 INFO L87 Difference]: Start difference. First operand 372 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:09,901 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:46:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:09,964 INFO L93 Difference]: Finished difference Result 537 states and 1598 transitions. [2021-03-11 14:46:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:09,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:09,973 INFO L225 Difference]: With dead ends: 537 [2021-03-11 14:46:09,973 INFO L226 Difference]: Without dead ends: 522 [2021-03-11 14:46:09,974 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 877.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-03-11 14:46:09,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 370. [2021-03-11 14:46:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.4254742547425474) internal successors, (1264), 369 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1264 transitions. [2021-03-11 14:46:09,981 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1264 transitions. Word has length 22 [2021-03-11 14:46:09,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:09,981 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 1264 transitions. [2021-03-11 14:46:09,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1264 transitions. [2021-03-11 14:46:09,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:09,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:09,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:09,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1625 [2021-03-11 14:46:09,982 INFO L428 AbstractCegarLoop]: === Iteration 1627 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:09,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash -203171093, now seen corresponding path program 1621 times [2021-03-11 14:46:09,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:09,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314325821] [2021-03-11 14:46:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:09,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:09,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:09,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:10,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:10,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:10,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:10,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:10,162 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:10,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:10,264 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:10,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:10,399 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:10,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:10,536 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:10,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:10,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:10,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314325821] [2021-03-11 14:46:10,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:10,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:10,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19814663] [2021-03-11 14:46:10,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:10,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:10,678 INFO L87 Difference]: Start difference. First operand 370 states and 1264 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:11,186 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:11,240 INFO L93 Difference]: Finished difference Result 548 states and 1615 transitions. [2021-03-11 14:46:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:11,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:11,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:11,252 INFO L225 Difference]: With dead ends: 548 [2021-03-11 14:46:11,252 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:46:11,252 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 888.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:46:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 374. [2021-03-11 14:46:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.415549597855228) internal successors, (1274), 373 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1274 transitions. [2021-03-11 14:46:11,260 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1274 transitions. Word has length 22 [2021-03-11 14:46:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:11,260 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1274 transitions. [2021-03-11 14:46:11,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1274 transitions. [2021-03-11 14:46:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:11,260 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:11,260 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:11,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1626 [2021-03-11 14:46:11,261 INFO L428 AbstractCegarLoop]: === Iteration 1628 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:11,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:11,261 INFO L82 PathProgramCache]: Analyzing trace with hash -705712645, now seen corresponding path program 1622 times [2021-03-11 14:46:11,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:11,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645632859] [2021-03-11 14:46:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:11,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:11,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:11,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:11,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:11,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:11,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:11,375 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:11,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:11,457 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:11,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:11,560 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:11,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:11,699 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:11,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:11,856 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:11,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:11,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:11,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645632859] [2021-03-11 14:46:11,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:11,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:11,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738022173] [2021-03-11 14:46:11,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:11,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:11,994 INFO L87 Difference]: Start difference. First operand 374 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:12,477 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:12,539 INFO L93 Difference]: Finished difference Result 547 states and 1611 transitions. [2021-03-11 14:46:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:12,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:12,550 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:46:12,550 INFO L226 Difference]: Without dead ends: 535 [2021-03-11 14:46:12,550 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 917.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-03-11 14:46:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 372. [2021-03-11 14:46:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.420485175202156) internal successors, (1269), 371 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1269 transitions. [2021-03-11 14:46:12,557 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1269 transitions. Word has length 22 [2021-03-11 14:46:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:12,557 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1269 transitions. [2021-03-11 14:46:12,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1269 transitions. [2021-03-11 14:46:12,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:12,558 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:12,558 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:12,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1627 [2021-03-11 14:46:12,558 INFO L428 AbstractCegarLoop]: === Iteration 1629 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash -790916415, now seen corresponding path program 1623 times [2021-03-11 14:46:12,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:12,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157440967] [2021-03-11 14:46:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:12,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:12,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:12,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:12,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:12,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:12,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:12,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:12,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:12,745 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:12,857 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:12,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:12,982 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:12,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:13,140 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:13,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:13,290 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:13,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157440967] [2021-03-11 14:46:13,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:13,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:13,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065679271] [2021-03-11 14:46:13,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:13,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:13,294 INFO L87 Difference]: Start difference. First operand 372 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:13,755 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:13,797 INFO L93 Difference]: Finished difference Result 549 states and 1617 transitions. [2021-03-11 14:46:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:13,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:13,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:13,805 INFO L225 Difference]: With dead ends: 549 [2021-03-11 14:46:13,805 INFO L226 Difference]: Without dead ends: 538 [2021-03-11 14:46:13,805 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 878.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-03-11 14:46:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 375. [2021-03-11 14:46:13,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.406417112299465) internal successors, (1274), 374 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:13,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1274 transitions. [2021-03-11 14:46:13,812 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1274 transitions. Word has length 22 [2021-03-11 14:46:13,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:13,812 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1274 transitions. [2021-03-11 14:46:13,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1274 transitions. [2021-03-11 14:46:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:13,813 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:13,813 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:13,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1628 [2021-03-11 14:46:13,813 INFO L428 AbstractCegarLoop]: === Iteration 1630 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash 366408183, now seen corresponding path program 1624 times [2021-03-11 14:46:13,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:13,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376508625] [2021-03-11 14:46:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:13,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:13,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:13,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:13,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:13,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:13,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:13,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:13,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:13,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:13,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:14,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:14,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:14,194 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:14,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:14,337 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:14,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:14,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376508625] [2021-03-11 14:46:14,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:14,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:14,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669340319] [2021-03-11 14:46:14,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:14,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:14,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:14,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:14,474 INFO L87 Difference]: Start difference. First operand 375 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:14,917 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:14,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:14,965 INFO L93 Difference]: Finished difference Result 542 states and 1610 transitions. [2021-03-11 14:46:14,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:14,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:14,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:14,974 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:46:14,974 INFO L226 Difference]: Without dead ends: 526 [2021-03-11 14:46:14,974 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 832.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:14,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-03-11 14:46:14,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 372. [2021-03-11 14:46:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4150943396226414) internal successors, (1267), 371 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:14,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1267 transitions. [2021-03-11 14:46:14,981 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:14,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:14,981 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1267 transitions. [2021-03-11 14:46:14,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:14,981 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1267 transitions. [2021-03-11 14:46:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:14,982 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:14,982 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:14,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1629 [2021-03-11 14:46:14,982 INFO L428 AbstractCegarLoop]: === Iteration 1631 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:14,982 INFO L82 PathProgramCache]: Analyzing trace with hash 374821561, now seen corresponding path program 1625 times [2021-03-11 14:46:14,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:14,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380764273] [2021-03-11 14:46:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:14,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:14,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:14,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:14,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:15,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:15,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:15,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:15,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:15,160 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:15,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:15,260 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:15,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:15,429 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:15,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:15,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:15,518 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:15,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:15,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380764273] [2021-03-11 14:46:15,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:15,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:15,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839969675] [2021-03-11 14:46:15,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:15,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:15,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:15,600 INFO L87 Difference]: Start difference. First operand 372 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:16,066 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:16,118 INFO L93 Difference]: Finished difference Result 547 states and 1610 transitions. [2021-03-11 14:46:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:16,126 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:16,127 INFO L225 Difference]: With dead ends: 547 [2021-03-11 14:46:16,127 INFO L226 Difference]: Without dead ends: 537 [2021-03-11 14:46:16,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 795.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-03-11 14:46:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 374. [2021-03-11 14:46:16,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4048257372654156) internal successors, (1270), 373 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1270 transitions. [2021-03-11 14:46:16,134 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1270 transitions. Word has length 22 [2021-03-11 14:46:16,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:16,134 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1270 transitions. [2021-03-11 14:46:16,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1270 transitions. [2021-03-11 14:46:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:16,135 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:16,135 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:16,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1630 [2021-03-11 14:46:16,135 INFO L428 AbstractCegarLoop]: === Iteration 1632 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:16,135 INFO L82 PathProgramCache]: Analyzing trace with hash 946276367, now seen corresponding path program 1626 times [2021-03-11 14:46:16,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:16,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282941826] [2021-03-11 14:46:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:16,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:16,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:16,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:16,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:16,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:16,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:16,250 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:16,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:16,330 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:16,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:16,423 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:16,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:16,607 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:16,612 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:16,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:16,753 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:16,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:16,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282941826] [2021-03-11 14:46:16,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:16,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:16,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129615685] [2021-03-11 14:46:16,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:16,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:16,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:16,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:16,891 INFO L87 Difference]: Start difference. First operand 374 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:17,368 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:17,428 INFO L93 Difference]: Finished difference Result 541 states and 1606 transitions. [2021-03-11 14:46:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:17,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:17,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:17,437 INFO L225 Difference]: With dead ends: 541 [2021-03-11 14:46:17,437 INFO L226 Difference]: Without dead ends: 524 [2021-03-11 14:46:17,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 928.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-03-11 14:46:17,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 370. [2021-03-11 14:46:17,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.4227642276422765) internal successors, (1263), 369 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:17,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1263 transitions. [2021-03-11 14:46:17,444 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1263 transitions. Word has length 22 [2021-03-11 14:46:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:17,444 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 1263 transitions. [2021-03-11 14:46:17,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:17,444 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1263 transitions. [2021-03-11 14:46:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:17,444 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:17,444 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:17,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1631 [2021-03-11 14:46:17,444 INFO L428 AbstractCegarLoop]: === Iteration 1633 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:17,445 INFO L82 PathProgramCache]: Analyzing trace with hash 276917273, now seen corresponding path program 1627 times [2021-03-11 14:46:17,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:17,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9985322] [2021-03-11 14:46:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:17,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:17,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:17,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:17,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:17,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:17,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:17,549 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:17,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:17,610 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:17,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:17,770 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:17,775 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:17,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:17,907 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:17,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:18,056 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:18,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:18,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9985322] [2021-03-11 14:46:18,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:18,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:18,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514696188] [2021-03-11 14:46:18,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:18,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:18,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:18,175 INFO L87 Difference]: Start difference. First operand 370 states and 1263 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:18,549 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:18,591 INFO L93 Difference]: Finished difference Result 538 states and 1589 transitions. [2021-03-11 14:46:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:18,599 INFO L225 Difference]: With dead ends: 538 [2021-03-11 14:46:18,600 INFO L226 Difference]: Without dead ends: 529 [2021-03-11 14:46:18,600 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 803.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-03-11 14:46:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 372. [2021-03-11 14:46:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4150943396226414) internal successors, (1267), 371 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1267 transitions. [2021-03-11 14:46:18,606 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:18,606 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1267 transitions. [2021-03-11 14:46:18,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1267 transitions. [2021-03-11 14:46:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:18,607 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:18,607 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:18,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1632 [2021-03-11 14:46:18,607 INFO L428 AbstractCegarLoop]: === Iteration 1634 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1887858231, now seen corresponding path program 1628 times [2021-03-11 14:46:18,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:18,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436761078] [2021-03-11 14:46:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:18,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:18,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:18,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:18,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:18,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:18,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:18,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:18,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:18,781 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:18,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:18,940 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:18,945 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:18,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:19,066 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:19,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:19,206 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:19,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:19,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436761078] [2021-03-11 14:46:19,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:19,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:19,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860868229] [2021-03-11 14:46:19,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:19,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:19,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:19,330 INFO L87 Difference]: Start difference. First operand 372 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:19,764 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:19,821 INFO L93 Difference]: Finished difference Result 539 states and 1590 transitions. [2021-03-11 14:46:19,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:19,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:19,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:19,828 INFO L225 Difference]: With dead ends: 539 [2021-03-11 14:46:19,828 INFO L226 Difference]: Without dead ends: 528 [2021-03-11 14:46:19,828 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 864.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-03-11 14:46:19,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 371. [2021-03-11 14:46:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.418918918918919) internal successors, (1265), 370 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1265 transitions. [2021-03-11 14:46:19,835 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1265 transitions. Word has length 22 [2021-03-11 14:46:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:19,835 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1265 transitions. [2021-03-11 14:46:19,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1265 transitions. [2021-03-11 14:46:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:19,836 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:19,836 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:19,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1633 [2021-03-11 14:46:19,836 INFO L428 AbstractCegarLoop]: === Iteration 1635 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash -310828049, now seen corresponding path program 1629 times [2021-03-11 14:46:19,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:19,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147026709] [2021-03-11 14:46:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:19,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:19,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:19,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:19,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:19,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:19,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:19,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:19,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:20,001 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:20,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:20,169 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:20,174 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:20,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:20,375 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:46:20,382 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:20,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:20,537 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:20,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:20,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147026709] [2021-03-11 14:46:20,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:20,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:20,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888680243] [2021-03-11 14:46:20,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:20,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:20,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:20,678 INFO L87 Difference]: Start difference. First operand 371 states and 1265 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:21,047 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:21,096 INFO L93 Difference]: Finished difference Result 540 states and 1593 transitions. [2021-03-11 14:46:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:21,105 INFO L225 Difference]: With dead ends: 540 [2021-03-11 14:46:21,105 INFO L226 Difference]: Without dead ends: 531 [2021-03-11 14:46:21,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 929.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:21,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-03-11 14:46:21,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 372. [2021-03-11 14:46:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4123989218328843) internal successors, (1266), 371 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1266 transitions. [2021-03-11 14:46:21,112 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1266 transitions. Word has length 22 [2021-03-11 14:46:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:21,112 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1266 transitions. [2021-03-11 14:46:21,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1266 transitions. [2021-03-11 14:46:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:21,113 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:21,113 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:21,113 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1634 [2021-03-11 14:46:21,113 INFO L428 AbstractCegarLoop]: === Iteration 1636 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:21,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1835342711, now seen corresponding path program 1630 times [2021-03-11 14:46:21,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:21,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063744375] [2021-03-11 14:46:21,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:21,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:21,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:21,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:21,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:21,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:21,219 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:21,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:21,294 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:21,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:21,455 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:21,461 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:21,635 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:46:21,640 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:21,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:21,783 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:21,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:21,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063744375] [2021-03-11 14:46:21,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:21,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:21,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15395616] [2021-03-11 14:46:21,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:21,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:21,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:21,908 INFO L87 Difference]: Start difference. First operand 372 states and 1266 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:22,380 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:22,440 INFO L93 Difference]: Finished difference Result 535 states and 1592 transitions. [2021-03-11 14:46:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:22,448 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:22,449 INFO L225 Difference]: With dead ends: 535 [2021-03-11 14:46:22,449 INFO L226 Difference]: Without dead ends: 521 [2021-03-11 14:46:22,449 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 969.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-03-11 14:46:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 371. [2021-03-11 14:46:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4162162162162164) internal successors, (1264), 370 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1264 transitions. [2021-03-11 14:46:22,456 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1264 transitions. Word has length 22 [2021-03-11 14:46:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:22,456 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1264 transitions. [2021-03-11 14:46:22,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1264 transitions. [2021-03-11 14:46:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:22,457 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:22,457 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:22,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1635 [2021-03-11 14:46:22,457 INFO L428 AbstractCegarLoop]: === Iteration 1637 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:22,457 INFO L82 PathProgramCache]: Analyzing trace with hash -300324945, now seen corresponding path program 1631 times [2021-03-11 14:46:22,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:22,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912326503] [2021-03-11 14:46:22,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:22,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:22,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:22,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:22,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:22,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:22,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:22,560 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:22,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:22,635 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:22,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:22,795 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:22,800 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:22,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:23,007 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:23,012 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:23,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:23,171 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:23,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:23,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912326503] [2021-03-11 14:46:23,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:23,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:23,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827648369] [2021-03-11 14:46:23,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:23,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:23,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:23,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:23,309 INFO L87 Difference]: Start difference. First operand 371 states and 1264 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:23,730 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:23,784 INFO L93 Difference]: Finished difference Result 542 states and 1597 transitions. [2021-03-11 14:46:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:23,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:23,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:23,794 INFO L225 Difference]: With dead ends: 542 [2021-03-11 14:46:23,794 INFO L226 Difference]: Without dead ends: 532 [2021-03-11 14:46:23,794 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 983.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:23,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-03-11 14:46:23,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 373. [2021-03-11 14:46:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4059139784946235) internal successors, (1267), 372 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1267 transitions. [2021-03-11 14:46:23,801 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1267 transitions. Word has length 22 [2021-03-11 14:46:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:23,801 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1267 transitions. [2021-03-11 14:46:23,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1267 transitions. [2021-03-11 14:46:23,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:23,802 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:23,802 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:23,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1636 [2021-03-11 14:46:23,802 INFO L428 AbstractCegarLoop]: === Iteration 1638 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash 234904857, now seen corresponding path program 1632 times [2021-03-11 14:46:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262430215] [2021-03-11 14:46:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:23,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:23,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:23,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:23,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:23,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:23,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:23,915 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-11 14:46:23,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 14:46:23,997 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:24,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:24,175 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:24,180 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:24,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:24,404 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:24,409 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:24,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:24,563 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:24,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:24,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262430215] [2021-03-11 14:46:24,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:24,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:24,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849662064] [2021-03-11 14:46:24,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:24,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:24,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:24,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:24,706 INFO L87 Difference]: Start difference. First operand 373 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:25,210 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:25,290 INFO L93 Difference]: Finished difference Result 536 states and 1593 transitions. [2021-03-11 14:46:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:25,299 INFO L225 Difference]: With dead ends: 536 [2021-03-11 14:46:25,299 INFO L226 Difference]: Without dead ends: 519 [2021-03-11 14:46:25,299 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1093.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:25,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-03-11 14:46:25,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 369. [2021-03-11 14:46:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.426630434782609) internal successors, (1261), 368 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1261 transitions. [2021-03-11 14:46:25,305 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1261 transitions. Word has length 22 [2021-03-11 14:46:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:25,306 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 1261 transitions. [2021-03-11 14:46:25,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1261 transitions. [2021-03-11 14:46:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:25,306 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:25,306 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:25,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1637 [2021-03-11 14:46:25,306 INFO L428 AbstractCegarLoop]: === Iteration 1639 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:25,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:25,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1064286085, now seen corresponding path program 1633 times [2021-03-11 14:46:25,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:25,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849791600] [2021-03-11 14:46:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:25,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:25,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:25,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:25,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:25,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:25,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:25,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:25,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:25,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:25,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:25,585 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:25,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:25,690 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:25,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:25,823 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:25,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:25,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849791600] [2021-03-11 14:46:25,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:25,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:25,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845839389] [2021-03-11 14:46:25,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:25,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:25,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:25,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:25,960 INFO L87 Difference]: Start difference. First operand 369 states and 1261 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:26,266 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:26,311 INFO L93 Difference]: Finished difference Result 577 states and 1698 transitions. [2021-03-11 14:46:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:26,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:26,319 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:46:26,319 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:46:26,320 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 764.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:26,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:46:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 376. [2021-03-11 14:46:26,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.424) internal successors, (1284), 375 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:26,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1284 transitions. [2021-03-11 14:46:26,327 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1284 transitions. Word has length 22 [2021-03-11 14:46:26,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:26,327 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1284 transitions. [2021-03-11 14:46:26,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1284 transitions. [2021-03-11 14:46:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:26,328 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:26,328 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:26,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1638 [2021-03-11 14:46:26,328 INFO L428 AbstractCegarLoop]: === Iteration 1640 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash 561744533, now seen corresponding path program 1634 times [2021-03-11 14:46:26,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:26,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006747074] [2021-03-11 14:46:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:26,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:26,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:26,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:26,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:26,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:26,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:26,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:26,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:26,502 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:26,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:26,599 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:26,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:26,722 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:26,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:26,862 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:26,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:26,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006747074] [2021-03-11 14:46:26,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:26,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:26,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726161556] [2021-03-11 14:46:26,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:26,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:26,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:26,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:26,995 INFO L87 Difference]: Start difference. First operand 376 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:27,459 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:27,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:27,504 INFO L93 Difference]: Finished difference Result 576 states and 1694 transitions. [2021-03-11 14:46:27,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:27,512 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:46:27,512 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:46:27,512 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 832.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:27,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:46:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 374. [2021-03-11 14:46:27,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.428954423592493) internal successors, (1279), 373 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:27,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1279 transitions. [2021-03-11 14:46:27,520 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1279 transitions. Word has length 22 [2021-03-11 14:46:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:27,520 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1279 transitions. [2021-03-11 14:46:27,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1279 transitions. [2021-03-11 14:46:27,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:27,520 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:27,520 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:27,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1639 [2021-03-11 14:46:27,521 INFO L428 AbstractCegarLoop]: === Iteration 1641 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash 476540763, now seen corresponding path program 1635 times [2021-03-11 14:46:27,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:27,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090466415] [2021-03-11 14:46:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:27,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:27,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:27,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:27,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:27,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:27,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:27,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:27,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:27,707 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:27,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:27,803 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:27,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:27,921 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:27,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:28,068 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:28,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:28,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:28,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090466415] [2021-03-11 14:46:28,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:28,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:28,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056926521] [2021-03-11 14:46:28,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:28,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:28,207 INFO L87 Difference]: Start difference. First operand 374 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:28,646 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:28,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:28,686 INFO L93 Difference]: Finished difference Result 581 states and 1705 transitions. [2021-03-11 14:46:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:28,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:28,695 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:46:28,695 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:46:28,695 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 853.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:46:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 377. [2021-03-11 14:46:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4148936170212765) internal successors, (1284), 376 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1284 transitions. [2021-03-11 14:46:28,702 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1284 transitions. Word has length 22 [2021-03-11 14:46:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:28,702 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1284 transitions. [2021-03-11 14:46:28,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1284 transitions. [2021-03-11 14:46:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:28,702 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:28,702 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:28,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1640 [2021-03-11 14:46:28,703 INFO L428 AbstractCegarLoop]: === Iteration 1642 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1633865361, now seen corresponding path program 1636 times [2021-03-11 14:46:28,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:28,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811454833] [2021-03-11 14:46:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:28,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:28,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:28,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:28,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:28,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:28,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:28,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:28,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:28,878 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:28,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:28,970 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:28,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:29,084 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:29,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:29,218 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:29,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:29,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811454833] [2021-03-11 14:46:29,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:29,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:29,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329490560] [2021-03-11 14:46:29,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:29,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:29,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:29,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:29,347 INFO L87 Difference]: Start difference. First operand 377 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:29,851 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:29,919 INFO L93 Difference]: Finished difference Result 583 states and 1706 transitions. [2021-03-11 14:46:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:29,926 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:29,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:29,928 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:46:29,928 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:46:29,928 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 827.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:46:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 374. [2021-03-11 14:46:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.423592493297587) internal successors, (1277), 373 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1277 transitions. [2021-03-11 14:46:29,935 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1277 transitions. Word has length 22 [2021-03-11 14:46:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:29,935 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1277 transitions. [2021-03-11 14:46:29,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1277 transitions. [2021-03-11 14:46:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:29,935 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:29,935 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:29,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1641 [2021-03-11 14:46:29,936 INFO L428 AbstractCegarLoop]: === Iteration 1643 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1642278739, now seen corresponding path program 1637 times [2021-03-11 14:46:29,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:29,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559752431] [2021-03-11 14:46:29,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:29,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:29,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:29,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:29,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:29,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:29,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:30,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:30,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:30,110 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:30,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:30,210 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:30,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:30,413 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:30,418 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:30,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:30,570 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:30,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:30,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559752431] [2021-03-11 14:46:30,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:30,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:30,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317691762] [2021-03-11 14:46:30,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:30,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:30,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:30,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:30,706 INFO L87 Difference]: Start difference. First operand 374 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:31,143 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:31,184 INFO L93 Difference]: Finished difference Result 578 states and 1696 transitions. [2021-03-11 14:46:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:31,192 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:46:31,193 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:46:31,193 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 944.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:46:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 376. [2021-03-11 14:46:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4133333333333336) internal successors, (1280), 375 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1280 transitions. [2021-03-11 14:46:31,200 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1280 transitions. Word has length 22 [2021-03-11 14:46:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:31,200 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1280 transitions. [2021-03-11 14:46:31,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1280 transitions. [2021-03-11 14:46:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:31,201 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:31,201 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:31,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1642 [2021-03-11 14:46:31,201 INFO L428 AbstractCegarLoop]: === Iteration 1644 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:31,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:31,201 INFO L82 PathProgramCache]: Analyzing trace with hash -2081233751, now seen corresponding path program 1638 times [2021-03-11 14:46:31,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:31,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952057813] [2021-03-11 14:46:31,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:31,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:31,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:31,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:31,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:31,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:31,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:31,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:31,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:31,380 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:31,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:31,481 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:31,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:31,684 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:31,689 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:31,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:31,843 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:31,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:31,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952057813] [2021-03-11 14:46:31,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:31,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:31,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855471094] [2021-03-11 14:46:31,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:31,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:31,986 INFO L87 Difference]: Start difference. First operand 376 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:32,453 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:32,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:32,517 INFO L93 Difference]: Finished difference Result 581 states and 1700 transitions. [2021-03-11 14:46:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:32,526 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:46:32,527 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:46:32,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 962.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:46:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 372. [2021-03-11 14:46:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4285714285714284) internal successors, (1272), 371 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1272 transitions. [2021-03-11 14:46:32,538 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1272 transitions. Word has length 22 [2021-03-11 14:46:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:32,538 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1272 transitions. [2021-03-11 14:46:32,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:32,538 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1272 transitions. [2021-03-11 14:46:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:32,539 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:32,539 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:32,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1643 [2021-03-11 14:46:32,539 INFO L428 AbstractCegarLoop]: === Iteration 1645 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:32,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:32,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1304647133, now seen corresponding path program 1639 times [2021-03-11 14:46:32,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:32,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847281203] [2021-03-11 14:46:32,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:32,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:32,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:32,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:32,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:32,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:32,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:32,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:32,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:32,730 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:32,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:32,885 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:46:32,891 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:32,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:33,024 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:33,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:33,175 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:33,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:33,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847281203] [2021-03-11 14:46:33,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:33,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:33,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919683610] [2021-03-11 14:46:33,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:33,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:33,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:33,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:33,302 INFO L87 Difference]: Start difference. First operand 372 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:33,775 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:33,817 INFO L93 Difference]: Finished difference Result 580 states and 1698 transitions. [2021-03-11 14:46:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:33,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:33,825 INFO L225 Difference]: With dead ends: 580 [2021-03-11 14:46:33,825 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:46:33,825 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 905.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:46:33,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 377. [2021-03-11 14:46:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4175531914893615) internal successors, (1285), 376 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1285 transitions. [2021-03-11 14:46:33,832 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1285 transitions. Word has length 22 [2021-03-11 14:46:33,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:33,832 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1285 transitions. [2021-03-11 14:46:33,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1285 transitions. [2021-03-11 14:46:33,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:33,833 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:33,833 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:33,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1644 [2021-03-11 14:46:33,833 INFO L428 AbstractCegarLoop]: === Iteration 1646 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1807188685, now seen corresponding path program 1640 times [2021-03-11 14:46:33,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:33,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665538891] [2021-03-11 14:46:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:33,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:33,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:33,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:33,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:33,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:33,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:33,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:33,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:33,982 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:33,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:34,107 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:46:34,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:34,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:34,234 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:34,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:34,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:34,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:34,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665538891] [2021-03-11 14:46:34,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:34,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:34,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3116217] [2021-03-11 14:46:34,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:34,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:34,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:34,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:34,520 INFO L87 Difference]: Start difference. First operand 377 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:35,001 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:35,057 INFO L93 Difference]: Finished difference Result 579 states and 1694 transitions. [2021-03-11 14:46:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:35,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:35,066 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:46:35,066 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:46:35,066 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 844.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:46:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 375. [2021-03-11 14:46:35,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4224598930481283) internal successors, (1280), 374 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1280 transitions. [2021-03-11 14:46:35,073 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1280 transitions. Word has length 22 [2021-03-11 14:46:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:35,073 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1280 transitions. [2021-03-11 14:46:35,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1280 transitions. [2021-03-11 14:46:35,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:35,074 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:35,074 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:35,074 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1645 [2021-03-11 14:46:35,074 INFO L428 AbstractCegarLoop]: === Iteration 1647 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash 802136987, now seen corresponding path program 1641 times [2021-03-11 14:46:35,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:35,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314592718] [2021-03-11 14:46:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:35,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:35,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:35,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:35,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:35,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:35,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:35,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:35,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:35,246 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:35,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:35,384 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:46:35,389 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:35,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:35,569 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:35,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:35,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:35,722 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:35,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:35,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314592718] [2021-03-11 14:46:35,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:35,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:35,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219355356] [2021-03-11 14:46:35,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:35,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:35,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:35,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:35,856 INFO L87 Difference]: Start difference. First operand 375 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:36,488 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:36,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:36,533 INFO L93 Difference]: Finished difference Result 588 states and 1712 transitions. [2021-03-11 14:46:36,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:36,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:36,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:36,543 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:46:36,543 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:46:36,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 953.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:46:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 379. [2021-03-11 14:46:36,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4047619047619047) internal successors, (1287), 378 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1287 transitions. [2021-03-11 14:46:36,550 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1287 transitions. Word has length 22 [2021-03-11 14:46:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:36,550 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1287 transitions. [2021-03-11 14:46:36,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1287 transitions. [2021-03-11 14:46:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:36,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:36,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:36,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1646 [2021-03-11 14:46:36,551 INFO L428 AbstractCegarLoop]: === Iteration 1648 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:36,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:36,551 INFO L82 PathProgramCache]: Analyzing trace with hash 875444399, now seen corresponding path program 1642 times [2021-03-11 14:46:36,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:36,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155302286] [2021-03-11 14:46:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:36,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:36,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:36,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:36,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:36,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:36,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:36,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:36,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:36,727 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:36,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:36,859 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:46:36,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:36,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:37,046 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:37,051 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:37,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:37,204 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:37,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:37,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155302286] [2021-03-11 14:46:37,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:37,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:37,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868082796] [2021-03-11 14:46:37,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:37,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:37,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:37,294 INFO L87 Difference]: Start difference. First operand 379 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:37,601 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:37,665 INFO L93 Difference]: Finished difference Result 593 states and 1718 transitions. [2021-03-11 14:46:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:37,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:37,674 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:46:37,674 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:46:37,674 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 822.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:46:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 375. [2021-03-11 14:46:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.414438502673797) internal successors, (1277), 374 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1277 transitions. [2021-03-11 14:46:37,681 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1277 transitions. Word has length 22 [2021-03-11 14:46:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:37,681 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1277 transitions. [2021-03-11 14:46:37,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1277 transitions. [2021-03-11 14:46:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:37,682 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:37,682 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:37,682 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1647 [2021-03-11 14:46:37,682 INFO L428 AbstractCegarLoop]: === Iteration 1649 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:37,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:37,682 INFO L82 PathProgramCache]: Analyzing trace with hash -716151375, now seen corresponding path program 1643 times [2021-03-11 14:46:37,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:37,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048234846] [2021-03-11 14:46:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:37,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:37,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:37,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:37,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:37,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:37,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:37,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:37,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:37,839 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:37,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:37,964 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:37,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:38,105 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:46:38,109 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:38,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:38,250 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:38,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:38,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048234846] [2021-03-11 14:46:38,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:38,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:38,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417568383] [2021-03-11 14:46:38,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:38,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:38,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:38,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:38,381 INFO L87 Difference]: Start difference. First operand 375 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:38,864 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:38,909 INFO L93 Difference]: Finished difference Result 585 states and 1702 transitions. [2021-03-11 14:46:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:38,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:38,918 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:46:38,918 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:46:38,918 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 871.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:46:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 378. [2021-03-11 14:46:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.40053050397878) internal successors, (1282), 377 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1282 transitions. [2021-03-11 14:46:38,929 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1282 transitions. Word has length 22 [2021-03-11 14:46:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:38,929 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1282 transitions. [2021-03-11 14:46:38,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1282 transitions. [2021-03-11 14:46:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:38,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:38,930 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:38,930 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1648 [2021-03-11 14:46:38,930 INFO L428 AbstractCegarLoop]: === Iteration 1650 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:38,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:38,930 INFO L82 PathProgramCache]: Analyzing trace with hash 600005929, now seen corresponding path program 1644 times [2021-03-11 14:46:38,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:38,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726468730] [2021-03-11 14:46:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:38,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:38,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:38,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:38,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:38,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:38,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:39,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:39,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:39,108 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:39,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:39,254 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:46:39,259 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:39,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:39,429 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:46:39,434 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:39,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:39,577 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:39,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:39,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726468730] [2021-03-11 14:46:39,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:39,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:39,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732336859] [2021-03-11 14:46:39,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:39,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:39,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:39,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:39,717 INFO L87 Difference]: Start difference. First operand 378 states and 1282 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:40,221 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:40,290 INFO L93 Difference]: Finished difference Result 591 states and 1711 transitions. [2021-03-11 14:46:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:40,297 INFO L225 Difference]: With dead ends: 591 [2021-03-11 14:46:40,297 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:46:40,297 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 871.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:46:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 372. [2021-03-11 14:46:40,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.420485175202156) internal successors, (1269), 371 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1269 transitions. [2021-03-11 14:46:40,304 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1269 transitions. Word has length 22 [2021-03-11 14:46:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:40,304 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1269 transitions. [2021-03-11 14:46:40,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:40,304 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1269 transitions. [2021-03-11 14:46:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:40,305 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:40,305 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:40,305 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1649 [2021-03-11 14:46:40,305 INFO L428 AbstractCegarLoop]: === Iteration 1651 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1362339043, now seen corresponding path program 1645 times [2021-03-11 14:46:40,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:40,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692056972] [2021-03-11 14:46:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:40,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:40,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:40,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:40,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:40,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:40,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:40,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:40,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:40,483 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:40,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:40,590 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:40,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:40,722 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:40,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:40,891 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:40,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:41,040 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:41,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692056972] [2021-03-11 14:46:41,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:41,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:41,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856342904] [2021-03-11 14:46:41,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:41,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:41,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:41,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:41,043 INFO L87 Difference]: Start difference. First operand 372 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:41,737 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:41,784 INFO L93 Difference]: Finished difference Result 592 states and 1726 transitions. [2021-03-11 14:46:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:41,792 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:41,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:41,793 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:46:41,793 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:46:41,793 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 929.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:41,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:46:41,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 379. [2021-03-11 14:46:41,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4074074074074074) internal successors, (1288), 378 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1288 transitions. [2021-03-11 14:46:41,801 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1288 transitions. Word has length 22 [2021-03-11 14:46:41,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:41,801 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1288 transitions. [2021-03-11 14:46:41,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1288 transitions. [2021-03-11 14:46:41,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:41,802 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:41,802 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:41,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1650 [2021-03-11 14:46:41,802 INFO L428 AbstractCegarLoop]: === Iteration 1652 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1775303655, now seen corresponding path program 1646 times [2021-03-11 14:46:41,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:41,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70893338] [2021-03-11 14:46:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:41,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:41,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:41,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:41,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:41,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:41,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:41,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:41,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:41,996 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:41,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:42,102 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:42,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:42,230 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:42,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:42,393 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:42,398 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:42,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:42,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70893338] [2021-03-11 14:46:42,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:42,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:42,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893756318] [2021-03-11 14:46:42,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:42,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:42,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:42,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:42,537 INFO L87 Difference]: Start difference. First operand 379 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:43,250 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:43,313 INFO L93 Difference]: Finished difference Result 594 states and 1727 transitions. [2021-03-11 14:46:43,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:43,321 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:43,323 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:46:43,323 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:46:43,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 935.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:46:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 376. [2021-03-11 14:46:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4133333333333336) internal successors, (1280), 375 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:43,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1280 transitions. [2021-03-11 14:46:43,330 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1280 transitions. Word has length 22 [2021-03-11 14:46:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:43,330 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1280 transitions. [2021-03-11 14:46:43,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1280 transitions. [2021-03-11 14:46:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:43,331 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:43,331 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:43,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1651 [2021-03-11 14:46:43,331 INFO L428 AbstractCegarLoop]: === Iteration 1653 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:43,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:43,331 INFO L82 PathProgramCache]: Analyzing trace with hash -238098811, now seen corresponding path program 1647 times [2021-03-11 14:46:43,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:43,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842005622] [2021-03-11 14:46:43,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:43,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:43,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:43,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:43,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:43,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:43,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:43,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:43,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:43,518 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:43,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:43,621 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:43,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:43,807 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:43,813 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:43,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:43,971 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:43,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:44,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842005622] [2021-03-11 14:46:44,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:44,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:44,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953439825] [2021-03-11 14:46:44,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:44,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:44,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:44,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:44,111 INFO L87 Difference]: Start difference. First operand 376 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:44,644 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:44,692 INFO L93 Difference]: Finished difference Result 592 states and 1720 transitions. [2021-03-11 14:46:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:44,701 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:46:44,701 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:46:44,701 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 931.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:46:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 380. [2021-03-11 14:46:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.395778364116095) internal successors, (1287), 379 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1287 transitions. [2021-03-11 14:46:44,709 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1287 transitions. Word has length 22 [2021-03-11 14:46:44,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:44,709 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1287 transitions. [2021-03-11 14:46:44,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:44,709 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1287 transitions. [2021-03-11 14:46:44,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:44,710 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:44,710 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:44,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1652 [2021-03-11 14:46:44,710 INFO L428 AbstractCegarLoop]: === Iteration 1654 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:44,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:44,710 INFO L82 PathProgramCache]: Analyzing trace with hash -164791399, now seen corresponding path program 1648 times [2021-03-11 14:46:44,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:44,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008413191] [2021-03-11 14:46:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:44,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:44,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:44,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:44,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:44,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:44,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:44,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:44,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:44,887 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:44,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:44,983 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:44,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:45,165 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:46:45,170 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:45,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:45,322 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:45,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:45,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008413191] [2021-03-11 14:46:45,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:45,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:45,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233936231] [2021-03-11 14:46:45,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:45,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:45,456 INFO L87 Difference]: Start difference. First operand 380 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:45,997 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:46,064 INFO L93 Difference]: Finished difference Result 597 states and 1726 transitions. [2021-03-11 14:46:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:46,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:46,073 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:46:46,073 INFO L226 Difference]: Without dead ends: 577 [2021-03-11 14:46:46,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 826.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-03-11 14:46:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 376. [2021-03-11 14:46:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4026666666666667) internal successors, (1276), 375 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1276 transitions. [2021-03-11 14:46:46,085 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1276 transitions. Word has length 22 [2021-03-11 14:46:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:46,085 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1276 transitions. [2021-03-11 14:46:46,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1276 transitions. [2021-03-11 14:46:46,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:46,086 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:46,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:46,086 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1653 [2021-03-11 14:46:46,086 INFO L428 AbstractCegarLoop]: === Iteration 1655 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash 497226117, now seen corresponding path program 1649 times [2021-03-11 14:46:46,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:46,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630398752] [2021-03-11 14:46:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:46,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:46,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:46,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:46,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:46,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:46,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:46,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:46,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:46,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:46,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:46,380 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:46,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:46,476 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:46,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:46,559 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:46,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:46,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630398752] [2021-03-11 14:46:46,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:46,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:46,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233016653] [2021-03-11 14:46:46,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:46,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:46,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:46,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:46,639 INFO L87 Difference]: Start difference. First operand 376 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:47,258 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:47,299 INFO L93 Difference]: Finished difference Result 598 states and 1730 transitions. [2021-03-11 14:46:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:47,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:47,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:47,307 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:46:47,307 INFO L226 Difference]: Without dead ends: 585 [2021-03-11 14:46:47,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 704.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2021-03-11 14:46:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 382. [2021-03-11 14:46:47,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.377952755905512) internal successors, (1287), 381 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:47,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1287 transitions. [2021-03-11 14:46:47,314 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1287 transitions. Word has length 22 [2021-03-11 14:46:47,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:47,314 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 1287 transitions. [2021-03-11 14:46:47,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1287 transitions. [2021-03-11 14:46:47,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:47,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:47,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:47,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1654 [2021-03-11 14:46:47,315 INFO L428 AbstractCegarLoop]: === Iteration 1656 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:47,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1352532771, now seen corresponding path program 1650 times [2021-03-11 14:46:47,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:47,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516240036] [2021-03-11 14:46:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:47,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:47,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:47,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:47,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:47,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:47,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:47,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:47,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:47,466 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:47,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:47,557 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:47,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:47,692 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:47,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:47,847 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:47,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:47,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:47,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516240036] [2021-03-11 14:46:47,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:47,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:47,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525784637] [2021-03-11 14:46:47,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:47,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:47,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:47,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:47,986 INFO L87 Difference]: Start difference. First operand 382 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:48,473 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:48,532 INFO L93 Difference]: Finished difference Result 593 states and 1716 transitions. [2021-03-11 14:46:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:48,541 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:46:48,542 INFO L226 Difference]: Without dead ends: 567 [2021-03-11 14:46:48,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 749.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-03-11 14:46:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 372. [2021-03-11 14:46:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4123989218328843) internal successors, (1266), 371 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1266 transitions. [2021-03-11 14:46:48,549 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1266 transitions. Word has length 22 [2021-03-11 14:46:48,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:48,549 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1266 transitions. [2021-03-11 14:46:48,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:48,549 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1266 transitions. [2021-03-11 14:46:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:48,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:48,549 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:48,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1655 [2021-03-11 14:46:48,550 INFO L428 AbstractCegarLoop]: === Iteration 1657 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1104696981, now seen corresponding path program 1651 times [2021-03-11 14:46:48,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:48,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804256199] [2021-03-11 14:46:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:48,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:48,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:48,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:48,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:48,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:48,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:48,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:48,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:48,724 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:48,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:48,890 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:48,895 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:48,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:49,092 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:49,097 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:49,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:49,253 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:49,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:49,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804256199] [2021-03-11 14:46:49,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:49,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:49,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548702583] [2021-03-11 14:46:49,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:49,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:49,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:49,389 INFO L87 Difference]: Start difference. First operand 372 states and 1266 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:49,951 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:50,000 INFO L93 Difference]: Finished difference Result 585 states and 1704 transitions. [2021-03-11 14:46:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:50,010 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:46:50,010 INFO L226 Difference]: Without dead ends: 575 [2021-03-11 14:46:50,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1011.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-03-11 14:46:50,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 377. [2021-03-11 14:46:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.401595744680851) internal successors, (1279), 376 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:50,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1279 transitions. [2021-03-11 14:46:50,017 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1279 transitions. Word has length 22 [2021-03-11 14:46:50,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:50,017 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1279 transitions. [2021-03-11 14:46:50,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:50,018 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1279 transitions. [2021-03-11 14:46:50,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:50,018 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:50,018 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:50,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1656 [2021-03-11 14:46:50,018 INFO L428 AbstractCegarLoop]: === Iteration 1658 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:50,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1676151787, now seen corresponding path program 1652 times [2021-03-11 14:46:50,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:50,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282281009] [2021-03-11 14:46:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:50,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:50,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:50,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:50,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:50,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:50,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:50,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:50,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:50,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:50,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:50,366 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:50,373 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:46:50,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:46:50,568 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:46:50,573 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:50,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:50,727 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:50,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:50,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282281009] [2021-03-11 14:46:50,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:50,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:50,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923568732] [2021-03-11 14:46:50,873 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:50,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:50,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:50,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:50,873 INFO L87 Difference]: Start difference. First operand 377 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:51,383 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:51,444 INFO L93 Difference]: Finished difference Result 588 states and 1708 transitions. [2021-03-11 14:46:51,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:51,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:51,453 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:46:51,453 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:46:51,454 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1030.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:51,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:46:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 375. [2021-03-11 14:46:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.406417112299465) internal successors, (1274), 374 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1274 transitions. [2021-03-11 14:46:51,461 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1274 transitions. Word has length 22 [2021-03-11 14:46:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:51,461 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1274 transitions. [2021-03-11 14:46:51,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1274 transitions. [2021-03-11 14:46:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:51,461 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:51,462 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:51,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1657 [2021-03-11 14:46:51,462 INFO L428 AbstractCegarLoop]: === Iteration 1659 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1579329357, now seen corresponding path program 1653 times [2021-03-11 14:46:51,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:51,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780583907] [2021-03-11 14:46:51,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:51,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:51,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:51,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:51,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:51,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:51,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:51,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:51,649 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:51,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:51,817 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:51,822 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:51,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:52,001 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:46:52,006 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:52,167 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:46:52,172 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:52,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:52,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780583907] [2021-03-11 14:46:52,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:52,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:52,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307719760] [2021-03-11 14:46:52,315 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:52,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:52,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:52,315 INFO L87 Difference]: Start difference. First operand 375 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:52,851 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:52,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:52,908 INFO L93 Difference]: Finished difference Result 586 states and 1702 transitions. [2021-03-11 14:46:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:52,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:52,924 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:46:52,924 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:46:52,924 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1044.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:46:52,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 378. [2021-03-11 14:46:52,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.3925729442970822) internal successors, (1279), 377 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1279 transitions. [2021-03-11 14:46:52,931 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1279 transitions. Word has length 22 [2021-03-11 14:46:52,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:52,931 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1279 transitions. [2021-03-11 14:46:52,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:52,931 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1279 transitions. [2021-03-11 14:46:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:52,932 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:52,932 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:52,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1658 [2021-03-11 14:46:52,932 INFO L428 AbstractCegarLoop]: === Iteration 1660 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:52,932 INFO L82 PathProgramCache]: Analyzing trace with hash -263172053, now seen corresponding path program 1654 times [2021-03-11 14:46:52,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:52,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494405160] [2021-03-11 14:46:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:52,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:52,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:52,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:52,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:52,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:52,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:53,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:53,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:53,131 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:53,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:53,312 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:53,316 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:46:53,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:46:53,498 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:46:53,504 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:53,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:53,664 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:53,670 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:53,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:53,826 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:53,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:53,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494405160] [2021-03-11 14:46:53,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:53,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:53,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253372325] [2021-03-11 14:46:53,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:53,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:53,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:53,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:53,830 INFO L87 Difference]: Start difference. First operand 378 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:54,282 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:54,362 INFO L93 Difference]: Finished difference Result 592 states and 1711 transitions. [2021-03-11 14:46:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:54,372 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:46:54,372 INFO L226 Difference]: Without dead ends: 573 [2021-03-11 14:46:54,372 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 981.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-03-11 14:46:54,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 375. [2021-03-11 14:46:54,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.3983957219251337) internal successors, (1271), 374 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1271 transitions. [2021-03-11 14:46:54,380 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1271 transitions. Word has length 22 [2021-03-11 14:46:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:54,380 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1271 transitions. [2021-03-11 14:46:54,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:54,380 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1271 transitions. [2021-03-11 14:46:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:54,380 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:54,380 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:54,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1659 [2021-03-11 14:46:54,380 INFO L428 AbstractCegarLoop]: === Iteration 1661 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -472644749, now seen corresponding path program 1655 times [2021-03-11 14:46:54,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:54,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221559353] [2021-03-11 14:46:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:54,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:54,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:54,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:54,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:54,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:54,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:54,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:54,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:54,533 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:54,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:54,683 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:54,687 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:54,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:54,798 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:54,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:54,924 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:54,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:55,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221559353] [2021-03-11 14:46:55,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:55,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:55,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975127893] [2021-03-11 14:46:55,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:55,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:55,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:55,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:55,054 INFO L87 Difference]: Start difference. First operand 375 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:55,742 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:46:55,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:55,803 INFO L93 Difference]: Finished difference Result 595 states and 1720 transitions. [2021-03-11 14:46:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:55,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:55,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:55,812 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:46:55,812 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:46:55,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 860.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:55,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:46:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 381. [2021-03-11 14:46:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.373684210526316) internal successors, (1282), 380 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1282 transitions. [2021-03-11 14:46:55,820 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1282 transitions. Word has length 22 [2021-03-11 14:46:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:55,820 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1282 transitions. [2021-03-11 14:46:55,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1282 transitions. [2021-03-11 14:46:55,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:55,820 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:55,820 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:55,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1660 [2021-03-11 14:46:55,821 INFO L428 AbstractCegarLoop]: === Iteration 1662 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:55,821 INFO L82 PathProgramCache]: Analyzing trace with hash 272057749, now seen corresponding path program 1656 times [2021-03-11 14:46:55,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:55,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118696534] [2021-03-11 14:46:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:55,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:55,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:55,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:55,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:55,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:55,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:55,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:55,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:46:55,999 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:46:56,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:46:56,162 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:46:56,167 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:46:56,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:46:56,286 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:56,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:56,428 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:56,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:56,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118696534] [2021-03-11 14:46:56,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:56,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:56,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452271810] [2021-03-11 14:46:56,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:56,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:56,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:56,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:56,561 INFO L87 Difference]: Start difference. First operand 381 states and 1282 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:56,976 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:57,051 INFO L93 Difference]: Finished difference Result 590 states and 1706 transitions. [2021-03-11 14:46:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:57,060 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:46:57,060 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:46:57,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 817.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:57,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:46:57,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 369. [2021-03-11 14:46:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.421195652173913) internal successors, (1259), 368 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1259 transitions. [2021-03-11 14:46:57,067 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1259 transitions. Word has length 22 [2021-03-11 14:46:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:57,067 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 1259 transitions. [2021-03-11 14:46:57,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1259 transitions. [2021-03-11 14:46:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:57,068 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:57,068 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:57,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1661 [2021-03-11 14:46:57,068 INFO L428 AbstractCegarLoop]: === Iteration 1663 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:57,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1121888725, now seen corresponding path program 1657 times [2021-03-11 14:46:57,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:57,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759811966] [2021-03-11 14:46:57,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:57,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:57,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:57,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:57,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:57,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:57,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:57,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:57,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:57,301 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:46:57,305 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:57,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:57,476 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:57,480 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:57,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:57,611 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:46:57,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:46:57,769 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:57,921 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:57,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759811966] [2021-03-11 14:46:57,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:57,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:57,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496452544] [2021-03-11 14:46:57,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:57,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:57,925 INFO L87 Difference]: Start difference. First operand 369 states and 1259 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:58,379 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:46:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:58,427 INFO L93 Difference]: Finished difference Result 554 states and 1628 transitions. [2021-03-11 14:46:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:58,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:58,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:58,437 INFO L225 Difference]: With dead ends: 554 [2021-03-11 14:46:58,437 INFO L226 Difference]: Without dead ends: 545 [2021-03-11 14:46:58,437 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 935.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:58,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-03-11 14:46:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 373. [2021-03-11 14:46:58,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4166666666666665) internal successors, (1271), 372 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1271 transitions. [2021-03-11 14:46:58,444 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1271 transitions. Word has length 22 [2021-03-11 14:46:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:58,444 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1271 transitions. [2021-03-11 14:46:58,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:58,444 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1271 transitions. [2021-03-11 14:46:58,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:58,445 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:58,445 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:58,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1662 [2021-03-11 14:46:58,445 INFO L428 AbstractCegarLoop]: === Iteration 1664 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:58,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:58,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1562137613, now seen corresponding path program 1658 times [2021-03-11 14:46:58,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:58,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851297360] [2021-03-11 14:46:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:58,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:58,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:58,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:58,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:58,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:58,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:46:58,553 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:46:58,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:46:58,681 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:46:58,686 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:46:58,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:46:58,850 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:46:58,854 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:46:58,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:46:58,979 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:46:58,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:46:59,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:46:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:46:59,279 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:46:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:46:59,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851297360] [2021-03-11 14:46:59,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:46:59,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:46:59,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985373218] [2021-03-11 14:46:59,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:46:59,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:46:59,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:46:59,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:46:59,283 INFO L87 Difference]: Start difference. First operand 373 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:59,872 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:46:59,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:46:59,921 INFO L93 Difference]: Finished difference Result 555 states and 1629 transitions. [2021-03-11 14:46:59,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:46:59,928 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:46:59,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:46:59,930 INFO L225 Difference]: With dead ends: 555 [2021-03-11 14:46:59,930 INFO L226 Difference]: Without dead ends: 544 [2021-03-11 14:46:59,930 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 988.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:46:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-03-11 14:46:59,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 372. [2021-03-11 14:46:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.420485175202156) internal successors, (1269), 371 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1269 transitions. [2021-03-11 14:46:59,936 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1269 transitions. Word has length 22 [2021-03-11 14:46:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:46:59,936 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1269 transitions. [2021-03-11 14:46:59,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:46:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1269 transitions. [2021-03-11 14:46:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:46:59,937 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:46:59,937 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:46:59,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1663 [2021-03-11 14:46:59,937 INFO L428 AbstractCegarLoop]: === Iteration 1665 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:46:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:46:59,937 INFO L82 PathProgramCache]: Analyzing trace with hash 534143403, now seen corresponding path program 1659 times [2021-03-11 14:46:59,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:46:59,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825330579] [2021-03-11 14:46:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:46:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:46:59,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:59,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:46:59,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:59,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:46:59,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:46:59,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:00,033 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:00,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:00,174 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:00,179 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:00,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:00,328 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:47:00,333 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:00,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:00,532 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:00,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:00,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:00,714 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:47:00,720 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:00,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:00,868 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:00,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825330579] [2021-03-11 14:47:00,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:00,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:00,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674714739] [2021-03-11 14:47:00,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:00,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:00,872 INFO L87 Difference]: Start difference. First operand 372 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:01,481 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:01,532 INFO L93 Difference]: Finished difference Result 557 states and 1633 transitions. [2021-03-11 14:47:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:01,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:01,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:01,543 INFO L225 Difference]: With dead ends: 557 [2021-03-11 14:47:01,543 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:47:01,543 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1025.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:47:01,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 373. [2021-03-11 14:47:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.413978494623656) internal successors, (1270), 372 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1270 transitions. [2021-03-11 14:47:01,550 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1270 transitions. Word has length 22 [2021-03-11 14:47:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:01,550 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1270 transitions. [2021-03-11 14:47:01,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1270 transitions. [2021-03-11 14:47:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:01,551 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:01,551 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:01,551 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1664 [2021-03-11 14:47:01,551 INFO L428 AbstractCegarLoop]: === Iteration 1666 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:01,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1614653133, now seen corresponding path program 1660 times [2021-03-11 14:47:01,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:01,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241143836] [2021-03-11 14:47:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:01,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:01,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:01,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:01,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:01,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:01,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:01,809 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:01,816 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:01,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:02,001 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:47:02,007 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:02,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:02,213 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:02,219 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:02,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:02,371 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:02,377 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:02,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:02,527 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:02,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241143836] [2021-03-11 14:47:02,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:02,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:02,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901740840] [2021-03-11 14:47:02,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:02,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:02,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:02,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:02,530 INFO L87 Difference]: Start difference. First operand 373 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:03,168 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:03,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:03,239 INFO L93 Difference]: Finished difference Result 561 states and 1640 transitions. [2021-03-11 14:47:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:03,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:03,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:03,248 INFO L225 Difference]: With dead ends: 561 [2021-03-11 14:47:03,248 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:47:03,249 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1156.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:03,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:47:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 372. [2021-03-11 14:47:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.417789757412399) internal successors, (1268), 371 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1268 transitions. [2021-03-11 14:47:03,256 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1268 transitions. Word has length 22 [2021-03-11 14:47:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:03,256 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1268 transitions. [2021-03-11 14:47:03,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1268 transitions. [2021-03-11 14:47:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:03,256 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:03,256 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:03,257 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1665 [2021-03-11 14:47:03,257 INFO L428 AbstractCegarLoop]: === Iteration 1667 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:03,257 INFO L82 PathProgramCache]: Analyzing trace with hash 544646507, now seen corresponding path program 1661 times [2021-03-11 14:47:03,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:03,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177997443] [2021-03-11 14:47:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:03,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:03,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:03,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:03,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:03,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:03,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:03,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:03,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:03,499 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:03,504 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:03,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:03,672 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:47:03,676 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:47:03,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:47:03,881 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:03,887 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:03,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:04,049 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:04,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:04,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177997443] [2021-03-11 14:47:04,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:04,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:04,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758372162] [2021-03-11 14:47:04,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:04,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:04,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:04,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:04,192 INFO L87 Difference]: Start difference. First operand 372 states and 1268 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:04,686 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:04,731 INFO L93 Difference]: Finished difference Result 560 states and 1639 transitions. [2021-03-11 14:47:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:04,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:04,741 INFO L225 Difference]: With dead ends: 560 [2021-03-11 14:47:04,741 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:47:04,741 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1100.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:47:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 374. [2021-03-11 14:47:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4075067024128685) internal successors, (1271), 373 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1271 transitions. [2021-03-11 14:47:04,748 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1271 transitions. Word has length 22 [2021-03-11 14:47:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:04,748 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1271 transitions. [2021-03-11 14:47:04,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1271 transitions. [2021-03-11 14:47:04,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:04,749 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:04,749 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:04,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1666 [2021-03-11 14:47:04,749 INFO L428 AbstractCegarLoop]: === Iteration 1668 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:04,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1079876309, now seen corresponding path program 1662 times [2021-03-11 14:47:04,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:04,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800423281] [2021-03-11 14:47:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:04,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:04,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:04,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:04,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:04,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:04,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:04,843 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:04,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:04,957 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:04,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:05,098 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2021-03-11 14:47:05,103 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:47:05,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:47:05,289 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:05,293 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:05,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:05,438 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:05,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:05,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800423281] [2021-03-11 14:47:05,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:05,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:05,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792261383] [2021-03-11 14:47:05,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:05,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:05,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:05,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:05,586 INFO L87 Difference]: Start difference. First operand 374 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:06,021 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:06,059 INFO L93 Difference]: Finished difference Result 563 states and 1643 transitions. [2021-03-11 14:47:06,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:06,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:06,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:06,064 INFO L225 Difference]: With dead ends: 563 [2021-03-11 14:47:06,064 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:47:06,065 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 960.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:47:06,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 371. [2021-03-11 14:47:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4216216216216218) internal successors, (1266), 370 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1266 transitions. [2021-03-11 14:47:06,071 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1266 transitions. Word has length 22 [2021-03-11 14:47:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:06,071 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1266 transitions. [2021-03-11 14:47:06,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:06,071 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1266 transitions. [2021-03-11 14:47:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:06,072 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:06,072 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:06,072 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1667 [2021-03-11 14:47:06,072 INFO L428 AbstractCegarLoop]: === Iteration 1669 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:06,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:06,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1247044493, now seen corresponding path program 1663 times [2021-03-11 14:47:06,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:06,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842723922] [2021-03-11 14:47:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:06,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:06,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:06,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:06,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:06,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:06,135 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:06,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:06,239 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:06,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:06,383 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:06,388 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:47:06,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:47:06,519 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:06,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:06,674 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:06,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:06,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842723922] [2021-03-11 14:47:06,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:06,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:06,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135109554] [2021-03-11 14:47:06,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:06,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:06,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:06,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:06,818 INFO L87 Difference]: Start difference. First operand 371 states and 1266 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:07,318 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:07,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:07,368 INFO L93 Difference]: Finished difference Result 558 states and 1633 transitions. [2021-03-11 14:47:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:07,378 INFO L225 Difference]: With dead ends: 558 [2021-03-11 14:47:07,378 INFO L226 Difference]: Without dead ends: 549 [2021-03-11 14:47:07,378 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 832.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-03-11 14:47:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 374. [2021-03-11 14:47:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4128686327077746) internal successors, (1273), 373 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:07,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1273 transitions. [2021-03-11 14:47:07,386 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1273 transitions. Word has length 22 [2021-03-11 14:47:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:07,386 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1273 transitions. [2021-03-11 14:47:07,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1273 transitions. [2021-03-11 14:47:07,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:07,386 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:07,387 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:07,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1668 [2021-03-11 14:47:07,387 INFO L428 AbstractCegarLoop]: === Iteration 1670 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash 363896465, now seen corresponding path program 1664 times [2021-03-11 14:47:07,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:07,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323215821] [2021-03-11 14:47:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:07,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:07,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:07,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:07,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:07,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:07,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:07,492 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:07,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:07,621 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:07,626 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:07,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:07,763 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:07,769 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-03-11 14:47:07,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 14:47:07,890 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:07,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:08,039 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:08,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:08,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323215821] [2021-03-11 14:47:08,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:08,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:08,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909585436] [2021-03-11 14:47:08,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:08,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:08,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:08,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:08,191 INFO L87 Difference]: Start difference. First operand 374 states and 1273 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:08,706 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:08,761 INFO L93 Difference]: Finished difference Result 559 states and 1634 transitions. [2021-03-11 14:47:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:08,770 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:08,771 INFO L225 Difference]: With dead ends: 559 [2021-03-11 14:47:08,771 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:47:08,771 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 982.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:47:08,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 373. [2021-03-11 14:47:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4166666666666665) internal successors, (1271), 372 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1271 transitions. [2021-03-11 14:47:08,778 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1271 transitions. Word has length 22 [2021-03-11 14:47:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:08,778 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1271 transitions. [2021-03-11 14:47:08,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1271 transitions. [2021-03-11 14:47:08,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:08,779 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:08,779 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:08,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1669 [2021-03-11 14:47:08,779 INFO L428 AbstractCegarLoop]: === Iteration 1671 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash 859739627, now seen corresponding path program 1665 times [2021-03-11 14:47:08,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:08,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986676509] [2021-03-11 14:47:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:08,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:08,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:08,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:08,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:08,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:08,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:08,886 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:08,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:09,019 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:09,024 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:09,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:09,161 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:09,165 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:09,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:09,344 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:09,349 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:09,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:09,507 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:09,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:09,652 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:09,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986676509] [2021-03-11 14:47:09,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:09,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:09,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078268977] [2021-03-11 14:47:09,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:09,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:09,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:09,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:09,655 INFO L87 Difference]: Start difference. First operand 373 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:10,088 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:10,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:10,140 INFO L93 Difference]: Finished difference Result 565 states and 1645 transitions. [2021-03-11 14:47:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:10,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:10,149 INFO L225 Difference]: With dead ends: 565 [2021-03-11 14:47:10,149 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:47:10,149 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 969.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:47:10,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 375. [2021-03-11 14:47:10,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.406417112299465) internal successors, (1274), 374 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:10,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1274 transitions. [2021-03-11 14:47:10,157 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1274 transitions. Word has length 22 [2021-03-11 14:47:10,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:10,157 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1274 transitions. [2021-03-11 14:47:10,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1274 transitions. [2021-03-11 14:47:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:10,157 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:10,157 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:10,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1670 [2021-03-11 14:47:10,158 INFO L428 AbstractCegarLoop]: === Iteration 1672 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash 321884049, now seen corresponding path program 1666 times [2021-03-11 14:47:10,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:10,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937871790] [2021-03-11 14:47:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:10,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:10,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:10,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:10,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:10,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:10,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:10,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:10,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:10,400 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:10,406 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:10,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:10,562 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:10,568 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:10,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:10,758 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:10,763 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:10,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:10,929 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:10,936 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:10,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:11,101 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:11,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937871790] [2021-03-11 14:47:11,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:11,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:11,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178182725] [2021-03-11 14:47:11,104 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:11,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:11,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:11,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:11,105 INFO L87 Difference]: Start difference. First operand 375 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:11,567 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:11,656 INFO L93 Difference]: Finished difference Result 572 states and 1657 transitions. [2021-03-11 14:47:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:11,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:11,667 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:47:11,667 INFO L226 Difference]: Without dead ends: 554 [2021-03-11 14:47:11,667 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1040.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-03-11 14:47:11,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 373. [2021-03-11 14:47:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.411290322580645) internal successors, (1269), 372 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1269 transitions. [2021-03-11 14:47:11,674 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1269 transitions. Word has length 22 [2021-03-11 14:47:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:11,674 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1269 transitions. [2021-03-11 14:47:11,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1269 transitions. [2021-03-11 14:47:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:11,675 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:11,675 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:11,675 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1671 [2021-03-11 14:47:11,675 INFO L428 AbstractCegarLoop]: === Iteration 1673 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:11,675 INFO L82 PathProgramCache]: Analyzing trace with hash 870242731, now seen corresponding path program 1667 times [2021-03-11 14:47:11,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:11,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516569971] [2021-03-11 14:47:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:11,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:11,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:11,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:11,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:11,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:11,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:11,789 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:11,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:11,914 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:11,920 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:11,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:12,073 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:12,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:12,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:12,268 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:47:12,273 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:12,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:12,446 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:47:12,453 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:12,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:12,615 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:12,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516569971] [2021-03-11 14:47:12,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:12,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:12,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409068328] [2021-03-11 14:47:12,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:12,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:12,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:12,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:12,619 INFO L87 Difference]: Start difference. First operand 373 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:13,240 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:13,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:13,295 INFO L93 Difference]: Finished difference Result 568 states and 1650 transitions. [2021-03-11 14:47:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:13,303 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:13,305 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:47:13,305 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:47:13,305 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1183.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:47:13,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 376. [2021-03-11 14:47:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.3973333333333335) internal successors, (1274), 375 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1274 transitions. [2021-03-11 14:47:13,313 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1274 transitions. Word has length 22 [2021-03-11 14:47:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:13,313 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1274 transitions. [2021-03-11 14:47:13,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1274 transitions. [2021-03-11 14:47:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:13,313 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:13,313 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:13,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1672 [2021-03-11 14:47:13,314 INFO L428 AbstractCegarLoop]: === Iteration 1674 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:13,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:13,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1278553805, now seen corresponding path program 1668 times [2021-03-11 14:47:13,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:13,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436938975] [2021-03-11 14:47:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:13,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:13,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:13,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:13,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:13,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:13,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:13,435 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:13,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:13,584 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:13,590 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:13,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:13,749 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:47:13,754 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:13,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:13,943 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:47:13,949 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:13,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:14,128 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:14,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:14,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:14,286 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:14,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436938975] [2021-03-11 14:47:14,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:14,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:14,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655495795] [2021-03-11 14:47:14,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:14,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:14,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:14,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:14,290 INFO L87 Difference]: Start difference. First operand 376 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:14,731 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:14,805 INFO L93 Difference]: Finished difference Result 574 states and 1659 transitions. [2021-03-11 14:47:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:14,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:14,814 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:47:14,814 INFO L226 Difference]: Without dead ends: 553 [2021-03-11 14:47:14,814 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1056.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:14,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-03-11 14:47:14,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 371. [2021-03-11 14:47:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4162162162162164) internal successors, (1264), 370 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1264 transitions. [2021-03-11 14:47:14,821 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1264 transitions. Word has length 22 [2021-03-11 14:47:14,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:14,822 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1264 transitions. [2021-03-11 14:47:14,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:14,822 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1264 transitions. [2021-03-11 14:47:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:14,822 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:14,822 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:14,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1673 [2021-03-11 14:47:14,823 INFO L428 AbstractCegarLoop]: === Iteration 1675 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:14,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:14,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1419941683, now seen corresponding path program 1669 times [2021-03-11 14:47:14,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:14,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626279600] [2021-03-11 14:47:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:14,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:14,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:14,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:14,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:14,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:14,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:14,931 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:14,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:15,068 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:15,074 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:15,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:15,227 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:15,232 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:15,420 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:15,425 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:15,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:15,587 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:15,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:15,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626279600] [2021-03-11 14:47:15,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:15,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:15,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405414850] [2021-03-11 14:47:15,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:15,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:15,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:15,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:15,717 INFO L87 Difference]: Start difference. First operand 371 states and 1264 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:16,160 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:16,207 INFO L93 Difference]: Finished difference Result 567 states and 1652 transitions. [2021-03-11 14:47:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:16,217 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:47:16,217 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:47:16,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 984.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:47:16,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 374. [2021-03-11 14:47:16,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4075067024128685) internal successors, (1271), 373 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1271 transitions. [2021-03-11 14:47:16,224 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1271 transitions. Word has length 22 [2021-03-11 14:47:16,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:16,224 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1271 transitions. [2021-03-11 14:47:16,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1271 transitions. [2021-03-11 14:47:16,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:16,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:16,225 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:16,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1674 [2021-03-11 14:47:16,225 INFO L428 AbstractCegarLoop]: === Iteration 1676 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:16,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -728854853, now seen corresponding path program 1670 times [2021-03-11 14:47:16,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:16,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925360717] [2021-03-11 14:47:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:16,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:16,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:16,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:16,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:16,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:16,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:16,334 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:16,468 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:16,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:16,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:16,626 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:16,631 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:16,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:16,822 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:16,827 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:16,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:16,969 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:16,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:17,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:17,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925360717] [2021-03-11 14:47:17,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:17,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:17,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131019578] [2021-03-11 14:47:17,092 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:17,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:17,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:17,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:17,092 INFO L87 Difference]: Start difference. First operand 374 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:17,551 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:17,610 INFO L93 Difference]: Finished difference Result 571 states and 1659 transitions. [2021-03-11 14:47:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:17,620 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:47:17,620 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:47:17,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1036.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:17,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:47:17,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 373. [2021-03-11 14:47:17,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.411290322580645) internal successors, (1269), 372 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1269 transitions. [2021-03-11 14:47:17,627 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1269 transitions. Word has length 22 [2021-03-11 14:47:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:17,627 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1269 transitions. [2021-03-11 14:47:17,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:17,628 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1269 transitions. [2021-03-11 14:47:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:17,628 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:17,628 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:17,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1675 [2021-03-11 14:47:17,628 INFO L428 AbstractCegarLoop]: === Iteration 1677 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:17,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:17,629 INFO L82 PathProgramCache]: Analyzing trace with hash -180496171, now seen corresponding path program 1671 times [2021-03-11 14:47:17,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:17,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432132915] [2021-03-11 14:47:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:17,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:17,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:17,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:17,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:17,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:17,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:17,737 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:17,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:17,875 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:17,881 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:17,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:18,039 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:18,045 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:18,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:18,216 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:18,221 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:18,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:18,380 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:18,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:18,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432132915] [2021-03-11 14:47:18,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:18,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:18,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156553938] [2021-03-11 14:47:18,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:18,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:18,511 INFO L87 Difference]: Start difference. First operand 373 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:18,904 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:18,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:18,955 INFO L93 Difference]: Finished difference Result 569 states and 1654 transitions. [2021-03-11 14:47:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:18,964 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:47:18,964 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:47:18,965 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 966.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:47:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-03-11 14:47:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4010695187165774) internal successors, (1272), 374 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1272 transitions. [2021-03-11 14:47:18,972 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1272 transitions. Word has length 22 [2021-03-11 14:47:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:18,972 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1272 transitions. [2021-03-11 14:47:18,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1272 transitions. [2021-03-11 14:47:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:18,972 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:18,972 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:18,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1676 [2021-03-11 14:47:18,972 INFO L428 AbstractCegarLoop]: === Iteration 1678 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:18,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:18,973 INFO L82 PathProgramCache]: Analyzing trace with hash -718351749, now seen corresponding path program 1672 times [2021-03-11 14:47:18,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:18,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8989537] [2021-03-11 14:47:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:18,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:18,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:18,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:18,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:19,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:19,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:19,082 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:19,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:19,219 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:19,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:19,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:19,363 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:19,367 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:19,548 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:19,553 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:19,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:19,710 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:19,715 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:19,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:19,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8989537] [2021-03-11 14:47:19,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:19,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:19,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216497293] [2021-03-11 14:47:19,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:19,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:19,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:19,857 INFO L87 Difference]: Start difference. First operand 375 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:20,302 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:20,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:20,406 INFO L93 Difference]: Finished difference Result 576 states and 1666 transitions. [2021-03-11 14:47:20,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:20,416 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:47:20,416 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:47:20,416 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 968.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:47:20,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 373. [2021-03-11 14:47:20,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4059139784946235) internal successors, (1267), 372 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1267 transitions. [2021-03-11 14:47:20,423 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1267 transitions. Word has length 22 [2021-03-11 14:47:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:20,424 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1267 transitions. [2021-03-11 14:47:20,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:20,424 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1267 transitions. [2021-03-11 14:47:20,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:20,424 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:20,424 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:20,424 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1677 [2021-03-11 14:47:20,424 INFO L428 AbstractCegarLoop]: === Iteration 1679 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash -222508587, now seen corresponding path program 1673 times [2021-03-11 14:47:20,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:20,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088793670] [2021-03-11 14:47:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:20,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:20,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:20,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:20,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:20,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:20,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:20,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:20,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:20,677 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:20,682 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:20,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:20,838 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:20,843 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:20,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:20,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:20,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:21,139 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:21,144 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:21,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:21,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088793670] [2021-03-11 14:47:21,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:21,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:21,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670027591] [2021-03-11 14:47:21,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:21,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:21,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:21,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:21,279 INFO L87 Difference]: Start difference. First operand 373 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:21,968 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:22,033 INFO L93 Difference]: Finished difference Result 581 states and 1680 transitions. [2021-03-11 14:47:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:22,044 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:47:22,044 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:47:22,044 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1045.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:22,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:47:22,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 379. [2021-03-11 14:47:22,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.380952380952381) internal successors, (1278), 378 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1278 transitions. [2021-03-11 14:47:22,051 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1278 transitions. Word has length 22 [2021-03-11 14:47:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:22,051 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1278 transitions. [2021-03-11 14:47:22,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1278 transitions. [2021-03-11 14:47:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:22,052 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:22,052 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:22,052 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1678 [2021-03-11 14:47:22,052 INFO L428 AbstractCegarLoop]: === Iteration 1680 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1388432371, now seen corresponding path program 1674 times [2021-03-11 14:47:22,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:22,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222871077] [2021-03-11 14:47:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:22,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:22,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:22,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:22,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:22,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:22,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:22,165 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:22,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:22,306 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:22,311 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:22,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:22,470 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:22,475 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:22,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:22,620 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:22,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:22,786 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:22,792 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:22,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:22,953 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:22,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222871077] [2021-03-11 14:47:22,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:22,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:22,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835858797] [2021-03-11 14:47:22,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:22,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:22,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:22,957 INFO L87 Difference]: Start difference. First operand 379 states and 1278 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:23,421 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:23,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:23,532 INFO L93 Difference]: Finished difference Result 576 states and 1666 transitions. [2021-03-11 14:47:23,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:23,541 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:47:23,541 INFO L226 Difference]: Without dead ends: 552 [2021-03-11 14:47:23,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 980.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:23,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-03-11 14:47:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 371. [2021-03-11 14:47:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4108108108108106) internal successors, (1262), 370 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1262 transitions. [2021-03-11 14:47:23,548 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1262 transitions. Word has length 22 [2021-03-11 14:47:23,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:23,548 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1262 transitions. [2021-03-11 14:47:23,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:23,548 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1262 transitions. [2021-03-11 14:47:23,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:23,549 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:23,549 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:23,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1679 [2021-03-11 14:47:23,549 INFO L428 AbstractCegarLoop]: === Iteration 1681 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:23,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:23,549 INFO L82 PathProgramCache]: Analyzing trace with hash -938488431, now seen corresponding path program 1675 times [2021-03-11 14:47:23,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:23,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603254154] [2021-03-11 14:47:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:23,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:23,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:23,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:23,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:23,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:23,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:23,670 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:23,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:23,813 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:23,819 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:23,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:24,008 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:24,013 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:47:24,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:47:24,221 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:24,225 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:24,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:24,372 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:24,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:24,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603254154] [2021-03-11 14:47:24,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:24,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:24,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765130082] [2021-03-11 14:47:24,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:24,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:24,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:24,506 INFO L87 Difference]: Start difference. First operand 371 states and 1262 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:25,068 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:25,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:25,131 INFO L93 Difference]: Finished difference Result 574 states and 1669 transitions. [2021-03-11 14:47:25,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:25,140 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:25,141 INFO L225 Difference]: With dead ends: 574 [2021-03-11 14:47:25,141 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:47:25,142 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1160.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:47:25,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 376. [2021-03-11 14:47:25,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.4) internal successors, (1275), 375 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1275 transitions. [2021-03-11 14:47:25,149 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1275 transitions. Word has length 22 [2021-03-11 14:47:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:25,149 INFO L480 AbstractCegarLoop]: Abstraction has 376 states and 1275 transitions. [2021-03-11 14:47:25,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1275 transitions. [2021-03-11 14:47:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:25,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:25,150 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:25,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1680 [2021-03-11 14:47:25,150 INFO L428 AbstractCegarLoop]: === Iteration 1682 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:25,151 INFO L82 PathProgramCache]: Analyzing trace with hash -403258629, now seen corresponding path program 1676 times [2021-03-11 14:47:25,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:25,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636308583] [2021-03-11 14:47:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:25,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:25,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:25,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:25,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:25,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:25,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:25,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:25,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:25,426 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:25,431 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:25,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:25,596 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:25,601 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:47:25,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:47:25,815 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:25,820 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:25,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:25,970 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:25,976 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:25,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:26,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636308583] [2021-03-11 14:47:26,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:26,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:26,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258867756] [2021-03-11 14:47:26,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:26,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:26,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:26,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:26,125 INFO L87 Difference]: Start difference. First operand 376 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:26,789 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:26,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:26,862 INFO L93 Difference]: Finished difference Result 577 states and 1673 transitions. [2021-03-11 14:47:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:26,872 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:47:26,872 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:47:26,872 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1158.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:47:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 374. [2021-03-11 14:47:26,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4048257372654156) internal successors, (1270), 373 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1270 transitions. [2021-03-11 14:47:26,879 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1270 transitions. Word has length 22 [2021-03-11 14:47:26,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:26,879 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1270 transitions. [2021-03-11 14:47:26,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:26,879 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1270 transitions. [2021-03-11 14:47:26,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:26,880 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:26,880 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:26,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1681 [2021-03-11 14:47:26,880 INFO L428 AbstractCegarLoop]: === Iteration 1683 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:26,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:26,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1756041011, now seen corresponding path program 1677 times [2021-03-11 14:47:26,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:26,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108858618] [2021-03-11 14:47:26,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:26,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:26,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:26,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:26,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:26,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:26,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:26,991 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:26,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:27,130 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:27,134 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:27,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:27,303 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:27,309 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:27,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:27,476 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:47:27,483 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:27,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:27,643 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:27,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:27,785 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:27,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108858618] [2021-03-11 14:47:27,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:27,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:27,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939987307] [2021-03-11 14:47:27,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:27,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:27,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:27,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:27,788 INFO L87 Difference]: Start difference. First operand 374 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:28,352 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:28,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:28,410 INFO L93 Difference]: Finished difference Result 575 states and 1667 transitions. [2021-03-11 14:47:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:28,421 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:47:28,421 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:47:28,421 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1099.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:47:28,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 377. [2021-03-11 14:47:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.390957446808511) internal successors, (1275), 376 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1275 transitions. [2021-03-11 14:47:28,428 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1275 transitions. Word has length 22 [2021-03-11 14:47:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:28,429 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1275 transitions. [2021-03-11 14:47:28,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1275 transitions. [2021-03-11 14:47:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:28,429 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:28,429 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:28,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1682 [2021-03-11 14:47:28,429 INFO L428 AbstractCegarLoop]: === Iteration 1684 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash -392755525, now seen corresponding path program 1678 times [2021-03-11 14:47:28,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:28,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766679390] [2021-03-11 14:47:28,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:28,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:28,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:28,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:28,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:28,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:28,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:28,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:28,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:28,685 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:28,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:28,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:28,858 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:28,864 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:28,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:29,049 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2021-03-11 14:47:29,054 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:29,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:29,211 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:29,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:29,355 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:29,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766679390] [2021-03-11 14:47:29,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:29,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:29,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935027226] [2021-03-11 14:47:29,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:29,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:29,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:29,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:29,359 INFO L87 Difference]: Start difference. First operand 377 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:29,780 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:29,863 INFO L93 Difference]: Finished difference Result 581 states and 1676 transitions. [2021-03-11 14:47:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:29,873 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:47:29,873 INFO L226 Difference]: Without dead ends: 562 [2021-03-11 14:47:29,873 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1015.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:29,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-03-11 14:47:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 374. [2021-03-11 14:47:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.396782841823056) internal successors, (1267), 373 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1267 transitions. [2021-03-11 14:47:29,881 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1267 transitions. Word has length 22 [2021-03-11 14:47:29,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:29,881 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1267 transitions. [2021-03-11 14:47:29,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1267 transitions. [2021-03-11 14:47:29,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:29,881 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:29,881 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:29,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1683 [2021-03-11 14:47:29,882 INFO L428 AbstractCegarLoop]: === Iteration 1685 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:29,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:29,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1703525491, now seen corresponding path program 1679 times [2021-03-11 14:47:29,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:29,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863080958] [2021-03-11 14:47:29,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:29,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:29,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:29,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:29,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:29,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:29,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:29,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:29,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:30,134 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:30,139 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:30,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:30,322 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:30,328 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:30,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:30,463 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:30,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:30,581 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:30,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:30,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863080958] [2021-03-11 14:47:30,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:30,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:30,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131245141] [2021-03-11 14:47:30,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:30,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:30,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:30,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:30,670 INFO L87 Difference]: Start difference. First operand 374 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:31,349 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-03-11 14:47:31,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:31,414 INFO L93 Difference]: Finished difference Result 584 states and 1685 transitions. [2021-03-11 14:47:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:31,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:31,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:31,423 INFO L225 Difference]: With dead ends: 584 [2021-03-11 14:47:31,423 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:47:31,423 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1009.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:47:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 380. [2021-03-11 14:47:31,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.372031662269129) internal successors, (1278), 379 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1278 transitions. [2021-03-11 14:47:31,430 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1278 transitions. Word has length 22 [2021-03-11 14:47:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:31,430 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1278 transitions. [2021-03-11 14:47:31,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1278 transitions. [2021-03-11 14:47:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:31,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:31,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:31,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1684 [2021-03-11 14:47:31,431 INFO L428 AbstractCegarLoop]: === Iteration 1686 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:31,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash -980500847, now seen corresponding path program 1680 times [2021-03-11 14:47:31,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:31,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687519917] [2021-03-11 14:47:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:31,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:31,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:31,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:31,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:31,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:31,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:31,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:31,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:31,675 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-03-11 14:47:31,680 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.6 percent of original size [2021-03-11 14:47:31,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 14:47:31,860 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2021-03-11 14:47:31,866 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:31,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:31,999 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:32,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:32,157 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:32,162 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:32,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:32,315 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:32,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687519917] [2021-03-11 14:47:32,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:32,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:32,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776750508] [2021-03-11 14:47:32,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:32,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:32,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:32,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:32,319 INFO L87 Difference]: Start difference. First operand 380 states and 1278 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:32,771 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:32,860 INFO L93 Difference]: Finished difference Result 579 states and 1671 transitions. [2021-03-11 14:47:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:32,869 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:47:32,869 INFO L226 Difference]: Without dead ends: 550 [2021-03-11 14:47:32,870 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 966.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:32,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-03-11 14:47:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 367. [2021-03-11 14:47:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 3.4262295081967213) internal successors, (1254), 366 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 1254 transitions. [2021-03-11 14:47:32,877 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 1254 transitions. Word has length 22 [2021-03-11 14:47:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:32,877 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 1254 transitions. [2021-03-11 14:47:32,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 1254 transitions. [2021-03-11 14:47:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:32,878 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:32,878 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:32,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1685 [2021-03-11 14:47:32,878 INFO L428 AbstractCegarLoop]: === Iteration 1687 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 665476929, now seen corresponding path program 1681 times [2021-03-11 14:47:32,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:32,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73060698] [2021-03-11 14:47:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:32,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:32,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:32,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:32,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:32,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:32,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:32,995 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:32,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:33,103 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:33,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:33,231 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:33,237 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:33,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:33,362 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:33,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:33,523 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:47:33,529 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:33,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:33,679 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:33,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:33,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73060698] [2021-03-11 14:47:33,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:33,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:33,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273778500] [2021-03-11 14:47:33,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:33,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:33,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:33,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:33,683 INFO L87 Difference]: Start difference. First operand 367 states and 1254 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:34,223 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:34,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:34,273 INFO L93 Difference]: Finished difference Result 577 states and 1697 transitions. [2021-03-11 14:47:34,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:34,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:34,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:34,282 INFO L225 Difference]: With dead ends: 577 [2021-03-11 14:47:34,282 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:47:34,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 977.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:47:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 374. [2021-03-11 14:47:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.428954423592493) internal successors, (1279), 373 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1279 transitions. [2021-03-11 14:47:34,290 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1279 transitions. Word has length 22 [2021-03-11 14:47:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:34,290 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1279 transitions. [2021-03-11 14:47:34,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1279 transitions. [2021-03-11 14:47:34,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:34,291 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:34,291 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:34,291 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1686 [2021-03-11 14:47:34,291 INFO L428 AbstractCegarLoop]: === Iteration 1688 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:34,291 INFO L82 PathProgramCache]: Analyzing trace with hash 819969071, now seen corresponding path program 1682 times [2021-03-11 14:47:34,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:34,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751361871] [2021-03-11 14:47:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:34,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:34,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:34,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:34,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:34,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:34,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:34,400 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:34,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:34,527 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:34,532 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:34,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:34,692 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:34,697 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:34,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:34,834 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:34,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:34,995 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:35,001 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:35,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:35,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751361871] [2021-03-11 14:47:35,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:35,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:35,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372638838] [2021-03-11 14:47:35,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:35,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:35,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:35,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:35,146 INFO L87 Difference]: Start difference. First operand 374 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:35,588 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:35,638 INFO L93 Difference]: Finished difference Result 575 states and 1692 transitions. [2021-03-11 14:47:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:35,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:35,647 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:47:35,647 INFO L226 Difference]: Without dead ends: 565 [2021-03-11 14:47:35,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 921.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-03-11 14:47:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 373. [2021-03-11 14:47:35,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.432795698924731) internal successors, (1277), 372 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1277 transitions. [2021-03-11 14:47:35,654 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1277 transitions. Word has length 22 [2021-03-11 14:47:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:35,654 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1277 transitions. [2021-03-11 14:47:35,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1277 transitions. [2021-03-11 14:47:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:35,655 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:35,655 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:35,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1687 [2021-03-11 14:47:35,655 INFO L428 AbstractCegarLoop]: === Iteration 1689 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1171823195, now seen corresponding path program 1683 times [2021-03-11 14:47:35,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:35,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029879661] [2021-03-11 14:47:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:35,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:35,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:35,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:35,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:35,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:35,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:35,760 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:35,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:35,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:36,040 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:36,045 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:36,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:36,237 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:36,242 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:36,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:36,396 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:36,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:36,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029879661] [2021-03-11 14:47:36,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:36,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:36,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284101214] [2021-03-11 14:47:36,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:36,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:36,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:36,537 INFO L87 Difference]: Start difference. First operand 373 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:37,123 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:37,168 INFO L93 Difference]: Finished difference Result 587 states and 1717 transitions. [2021-03-11 14:47:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:37,178 INFO L225 Difference]: With dead ends: 587 [2021-03-11 14:47:37,178 INFO L226 Difference]: Without dead ends: 576 [2021-03-11 14:47:37,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1060.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-03-11 14:47:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 377. [2021-03-11 14:47:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4148936170212765) internal successors, (1284), 376 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1284 transitions. [2021-03-11 14:47:37,185 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1284 transitions. Word has length 22 [2021-03-11 14:47:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:37,185 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1284 transitions. [2021-03-11 14:47:37,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1284 transitions. [2021-03-11 14:47:37,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:37,186 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:37,186 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:37,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1688 [2021-03-11 14:47:37,186 INFO L428 AbstractCegarLoop]: === Iteration 1690 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:37,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1245130607, now seen corresponding path program 1684 times [2021-03-11 14:47:37,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:37,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560241915] [2021-03-11 14:47:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:37,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:37,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:37,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:37,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:37,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:37,283 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:37,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:37,413 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:37,418 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:37,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:37,580 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:37,585 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:37,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:37,784 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:37,790 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:37,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:37,952 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:37,957 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:37,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:38,104 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:38,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560241915] [2021-03-11 14:47:38,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:38,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:38,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098854828] [2021-03-11 14:47:38,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:38,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:38,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:38,107 INFO L87 Difference]: Start difference. First operand 377 states and 1284 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:38,551 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:38,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:38,621 INFO L93 Difference]: Finished difference Result 592 states and 1723 transitions. [2021-03-11 14:47:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:38,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:38,631 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:47:38,631 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:47:38,631 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1010.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:38,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:47:38,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 373. [2021-03-11 14:47:38,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4274193548387095) internal successors, (1275), 372 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1275 transitions. [2021-03-11 14:47:38,639 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1275 transitions. Word has length 22 [2021-03-11 14:47:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:38,639 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1275 transitions. [2021-03-11 14:47:38,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:38,639 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1275 transitions. [2021-03-11 14:47:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:38,640 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:38,640 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:38,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1689 [2021-03-11 14:47:38,640 INFO L428 AbstractCegarLoop]: === Iteration 1691 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:38,640 INFO L82 PathProgramCache]: Analyzing trace with hash -274122517, now seen corresponding path program 1685 times [2021-03-11 14:47:38,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:38,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271744614] [2021-03-11 14:47:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:38,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:38,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:38,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:38,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:38,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:38,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:38,754 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:38,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:38,882 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:38,887 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:38,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:39,043 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:39,048 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:39,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:39,208 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2021-03-11 14:47:39,214 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:39,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:39,376 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:39,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:39,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:39,527 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:39,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271744614] [2021-03-11 14:47:39,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:39,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:39,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693452565] [2021-03-11 14:47:39,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:39,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:39,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:39,531 INFO L87 Difference]: Start difference. First operand 373 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:40,120 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:40,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:40,171 INFO L93 Difference]: Finished difference Result 581 states and 1701 transitions. [2021-03-11 14:47:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:40,179 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:40,181 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:47:40,181 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:47:40,181 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 980.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:40,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:47:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 375. [2021-03-11 14:47:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4171122994652405) internal successors, (1278), 374 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1278 transitions. [2021-03-11 14:47:40,188 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1278 transitions. Word has length 22 [2021-03-11 14:47:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:40,188 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1278 transitions. [2021-03-11 14:47:40,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1278 transitions. [2021-03-11 14:47:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:40,189 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:40,189 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:40,189 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1690 [2021-03-11 14:47:40,189 INFO L428 AbstractCegarLoop]: === Iteration 1692 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash -811978095, now seen corresponding path program 1686 times [2021-03-11 14:47:40,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:40,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340705791] [2021-03-11 14:47:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:40,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:40,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:40,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:40,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:40,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:40,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:40,301 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:40,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:40,430 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:40,436 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:40,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:40,602 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2021-03-11 14:47:40,607 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:40,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:40,794 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2021-03-11 14:47:40,800 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:40,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:40,970 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:40,975 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:41,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340705791] [2021-03-11 14:47:41,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:41,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:41,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339571046] [2021-03-11 14:47:41,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:41,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:41,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:41,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:41,123 INFO L87 Difference]: Start difference. First operand 375 states and 1278 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:41,531 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:41,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:41,626 INFO L93 Difference]: Finished difference Result 588 states and 1713 transitions. [2021-03-11 14:47:41,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:41,636 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:41,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:41,637 INFO L225 Difference]: With dead ends: 588 [2021-03-11 14:47:41,638 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:47:41,638 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1001.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:47:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 371. [2021-03-11 14:47:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4324324324324325) internal successors, (1270), 370 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1270 transitions. [2021-03-11 14:47:41,645 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1270 transitions. Word has length 22 [2021-03-11 14:47:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:41,645 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1270 transitions. [2021-03-11 14:47:41,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1270 transitions. [2021-03-11 14:47:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:41,646 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:41,646 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:41,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1691 [2021-03-11 14:47:41,646 INFO L428 AbstractCegarLoop]: === Iteration 1693 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash 195120091, now seen corresponding path program 1687 times [2021-03-11 14:47:41,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:41,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561887944] [2021-03-11 14:47:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:41,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:41,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:41,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:41,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:41,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:41,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:41,770 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:41,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:41,912 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:41,918 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:41,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:42,034 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:42,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:42,180 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:42,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:42,349 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:47:42,356 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:42,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:42,518 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:42,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561887944] [2021-03-11 14:47:42,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:42,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:42,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65034871] [2021-03-11 14:47:42,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:42,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:42,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:42,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:42,523 INFO L87 Difference]: Start difference. First operand 371 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:43,174 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:43,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:43,212 INFO L93 Difference]: Finished difference Result 570 states and 1681 transitions. [2021-03-11 14:47:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:43,219 INFO L225 Difference]: With dead ends: 570 [2021-03-11 14:47:43,219 INFO L226 Difference]: Without dead ends: 559 [2021-03-11 14:47:43,219 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1099.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:43,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-03-11 14:47:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 373. [2021-03-11 14:47:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.424731182795699) internal successors, (1274), 372 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1274 transitions. [2021-03-11 14:47:43,230 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1274 transitions. Word has length 22 [2021-03-11 14:47:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:43,230 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1274 transitions. [2021-03-11 14:47:43,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1274 transitions. [2021-03-11 14:47:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:43,231 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:43,231 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:43,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1692 [2021-03-11 14:47:43,231 INFO L428 AbstractCegarLoop]: === Iteration 1694 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:43,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:43,231 INFO L82 PathProgramCache]: Analyzing trace with hash 349612233, now seen corresponding path program 1688 times [2021-03-11 14:47:43,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:43,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027026542] [2021-03-11 14:47:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:43,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:43,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:43,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:43,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:43,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:43,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:43,294 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:43,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:43,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:43,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:43,489 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:43,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:43,630 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:43,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:43,795 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:43,800 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:43,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:43,949 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:43,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027026542] [2021-03-11 14:47:43,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:43,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:43,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692831955] [2021-03-11 14:47:43,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:43,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:43,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:43,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:43,953 INFO L87 Difference]: Start difference. First operand 373 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:44,405 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:44,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:44,461 INFO L93 Difference]: Finished difference Result 568 states and 1676 transitions. [2021-03-11 14:47:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:44,471 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:47:44,471 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:47:44,472 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 812.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:47:44,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 372. [2021-03-11 14:47:44,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4285714285714284) internal successors, (1272), 371 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1272 transitions. [2021-03-11 14:47:44,479 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1272 transitions. Word has length 22 [2021-03-11 14:47:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:44,479 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1272 transitions. [2021-03-11 14:47:44,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1272 transitions. [2021-03-11 14:47:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:44,480 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:44,480 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:44,480 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1693 [2021-03-11 14:47:44,480 INFO L428 AbstractCegarLoop]: === Iteration 1695 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:44,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:44,480 INFO L82 PathProgramCache]: Analyzing trace with hash -392625231, now seen corresponding path program 1689 times [2021-03-11 14:47:44,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:44,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671211096] [2021-03-11 14:47:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:44,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:44,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:44,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:44,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:44,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:44,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:44,590 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:44,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:44,718 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:44,723 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:44,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:44,823 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:44,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:44,954 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:44,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:45,109 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:45,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:45,249 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:45,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671211096] [2021-03-11 14:47:45,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:45,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:45,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080515386] [2021-03-11 14:47:45,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:45,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:45,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:45,253 INFO L87 Difference]: Start difference. First operand 372 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:45,777 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:45,824 INFO L93 Difference]: Finished difference Result 575 states and 1692 transitions. [2021-03-11 14:47:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:45,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:45,834 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:47:45,834 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:47:45,834 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 969.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:47:45,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 375. [2021-03-11 14:47:45,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.414438502673797) internal successors, (1277), 374 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1277 transitions. [2021-03-11 14:47:45,841 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1277 transitions. Word has length 22 [2021-03-11 14:47:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:45,841 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1277 transitions. [2021-03-11 14:47:45,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:45,841 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1277 transitions. [2021-03-11 14:47:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:45,842 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:45,842 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:45,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1694 [2021-03-11 14:47:45,842 INFO L428 AbstractCegarLoop]: === Iteration 1696 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:45,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1848716553, now seen corresponding path program 1690 times [2021-03-11 14:47:45,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673960861] [2021-03-11 14:47:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:45,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:45,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:45,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:45,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:45,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:45,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:45,940 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:45,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:46,062 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:46,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:46,157 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:46,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:46,267 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:46,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:46,401 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:46,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:46,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673960861] [2021-03-11 14:47:46,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:46,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:46,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689821615] [2021-03-11 14:47:46,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:46,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:46,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:46,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:46,529 INFO L87 Difference]: Start difference. First operand 375 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:47,027 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:47,107 INFO L93 Difference]: Finished difference Result 576 states and 1691 transitions. [2021-03-11 14:47:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:47,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:47,117 INFO L225 Difference]: With dead ends: 576 [2021-03-11 14:47:47,117 INFO L226 Difference]: Without dead ends: 561 [2021-03-11 14:47:47,118 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 853.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-03-11 14:47:47,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 372. [2021-03-11 14:47:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4258760107816713) internal successors, (1271), 371 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1271 transitions. [2021-03-11 14:47:47,125 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1271 transitions. Word has length 22 [2021-03-11 14:47:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:47,125 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1271 transitions. [2021-03-11 14:47:47,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1271 transitions. [2021-03-11 14:47:47,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:47,126 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:47,126 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:47,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1695 [2021-03-11 14:47:47,126 INFO L428 AbstractCegarLoop]: === Iteration 1697 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1838570943, now seen corresponding path program 1691 times [2021-03-11 14:47:47,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:47,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982489629] [2021-03-11 14:47:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:47,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:47,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:47,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:47,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:47,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:47,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:47,246 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:47,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:47,374 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:47,378 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:47,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:47,487 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:47,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:47,706 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:47,712 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:47,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:47,880 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:47,887 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:47,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:48,040 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:48,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982489629] [2021-03-11 14:47:48,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:48,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:48,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253692648] [2021-03-11 14:47:48,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:48,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:48,044 INFO L87 Difference]: Start difference. First operand 372 states and 1271 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:48,478 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:48,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:48,528 INFO L93 Difference]: Finished difference Result 569 states and 1677 transitions. [2021-03-11 14:47:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:48,538 INFO L225 Difference]: With dead ends: 569 [2021-03-11 14:47:48,538 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:47:48,538 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1000.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:47:48,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 373. [2021-03-11 14:47:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:47:48,546 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:47:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:48,546 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:47:48,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:47:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:48,546 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:48,546 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:48,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1696 [2021-03-11 14:47:48,547 INFO L428 AbstractCegarLoop]: === Iteration 1698 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:48,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1303341141, now seen corresponding path program 1692 times [2021-03-11 14:47:48,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:48,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046731972] [2021-03-11 14:47:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:48,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:48,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:48,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:48,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:48,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:48,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:48,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:48,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:48,792 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:48,796 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-03-11 14:47:48,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-11 14:47:48,902 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:48,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:49,112 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:49,118 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:49,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:49,265 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:49,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:49,406 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:49,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046731972] [2021-03-11 14:47:49,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:49,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:49,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635112479] [2021-03-11 14:47:49,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:49,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:49,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:49,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:49,410 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:49,920 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:49,994 INFO L93 Difference]: Finished difference Result 572 states and 1682 transitions. [2021-03-11 14:47:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:50,004 INFO L225 Difference]: With dead ends: 572 [2021-03-11 14:47:50,004 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:47:50,004 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1059.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:47:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 371. [2021-03-11 14:47:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.4297297297297296) internal successors, (1269), 370 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:50,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1269 transitions. [2021-03-11 14:47:50,012 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1269 transitions. Word has length 22 [2021-03-11 14:47:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:50,012 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1269 transitions. [2021-03-11 14:47:50,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1269 transitions. [2021-03-11 14:47:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:50,012 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:50,012 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:50,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1697 [2021-03-11 14:47:50,013 INFO L428 AbstractCegarLoop]: === Iteration 1699 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:50,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1875760169, now seen corresponding path program 1693 times [2021-03-11 14:47:50,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:50,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213711733] [2021-03-11 14:47:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:50,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:50,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:50,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:50,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:50,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:50,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:50,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:50,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:50,269 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:50,275 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:50,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:50,441 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:50,447 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:50,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:50,583 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:50,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:50,744 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:47:50,750 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:50,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:50,902 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:50,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213711733] [2021-03-11 14:47:50,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:50,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:50,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345093938] [2021-03-11 14:47:50,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:50,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:50,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:50,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:50,906 INFO L87 Difference]: Start difference. First operand 371 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:51,437 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:51,486 INFO L93 Difference]: Finished difference Result 592 states and 1735 transitions. [2021-03-11 14:47:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:51,497 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:47:51,497 INFO L226 Difference]: Without dead ends: 581 [2021-03-11 14:47:51,497 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1074.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-03-11 14:47:51,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 378. [2021-03-11 14:47:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.416445623342175) internal successors, (1288), 377 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:51,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1288 transitions. [2021-03-11 14:47:51,505 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1288 transitions. Word has length 22 [2021-03-11 14:47:51,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:51,505 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1288 transitions. [2021-03-11 14:47:51,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:51,505 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1288 transitions. [2021-03-11 14:47:51,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:51,506 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:51,506 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:51,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1698 [2021-03-11 14:47:51,506 INFO L428 AbstractCegarLoop]: === Iteration 1700 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:51,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:51,506 INFO L82 PathProgramCache]: Analyzing trace with hash 365581615, now seen corresponding path program 1694 times [2021-03-11 14:47:51,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:51,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27929481] [2021-03-11 14:47:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:51,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:51,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:51,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:51,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:51,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:51,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:51,623 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:51,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:51,751 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:51,756 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:51,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:51,914 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:51,919 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:47:51,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:47:52,034 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:52,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:52,169 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:52,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:52,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27929481] [2021-03-11 14:47:52,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:52,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:52,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269381854] [2021-03-11 14:47:52,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:52,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:52,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:52,307 INFO L87 Difference]: Start difference. First operand 378 states and 1288 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:52,781 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:52,842 INFO L93 Difference]: Finished difference Result 593 states and 1734 transitions. [2021-03-11 14:47:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:52,853 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:47:52,853 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:47:52,853 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 987.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:47:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 375. [2021-03-11 14:47:52,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4224598930481283) internal successors, (1280), 374 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:52,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1280 transitions. [2021-03-11 14:47:52,860 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1280 transitions. Word has length 22 [2021-03-11 14:47:52,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:52,860 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1280 transitions. [2021-03-11 14:47:52,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:52,860 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1280 transitions. [2021-03-11 14:47:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:52,861 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:52,861 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:52,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1699 [2021-03-11 14:47:52,861 INFO L428 AbstractCegarLoop]: === Iteration 1701 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:52,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:52,861 INFO L82 PathProgramCache]: Analyzing trace with hash -781668581, now seen corresponding path program 1695 times [2021-03-11 14:47:52,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:52,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552578718] [2021-03-11 14:47:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:52,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:52,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:52,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:52,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:52,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:52,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:52,979 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:52,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:53,113 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:53,119 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:53,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:53,279 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:53,285 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:53,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:53,494 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:53,500 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:53,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:53,659 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:47:53,666 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:53,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:53,815 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:53,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552578718] [2021-03-11 14:47:53,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:53,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:53,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231501351] [2021-03-11 14:47:53,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:53,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:53,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:53,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:53,819 INFO L87 Difference]: Start difference. First operand 375 states and 1280 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:54,364 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:54,413 INFO L93 Difference]: Finished difference Result 597 states and 1741 transitions. [2021-03-11 14:47:54,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:54,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:54,423 INFO L225 Difference]: With dead ends: 597 [2021-03-11 14:47:54,423 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:47:54,423 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1151.4ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:47:54,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 379. [2021-03-11 14:47:54,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.4047619047619047) internal successors, (1287), 378 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1287 transitions. [2021-03-11 14:47:54,430 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1287 transitions. Word has length 22 [2021-03-11 14:47:54,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:54,431 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1287 transitions. [2021-03-11 14:47:54,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1287 transitions. [2021-03-11 14:47:54,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:54,431 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:54,431 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:54,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1700 [2021-03-11 14:47:54,432 INFO L428 AbstractCegarLoop]: === Iteration 1702 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:54,432 INFO L82 PathProgramCache]: Analyzing trace with hash -708361169, now seen corresponding path program 1696 times [2021-03-11 14:47:54,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:54,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722361941] [2021-03-11 14:47:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:54,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:54,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:54,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:54,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:54,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:54,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:54,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:54,679 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:54,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:54,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:54,850 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:54,855 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:54,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:55,046 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2021-03-11 14:47:55,052 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:55,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:55,207 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:55,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:55,351 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:55,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722361941] [2021-03-11 14:47:55,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:55,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:55,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797513697] [2021-03-11 14:47:55,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:55,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:55,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:55,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:55,355 INFO L87 Difference]: Start difference. First operand 379 states and 1287 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:55,764 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:55,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:55,838 INFO L93 Difference]: Finished difference Result 602 states and 1747 transitions. [2021-03-11 14:47:55,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:55,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:55,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:55,848 INFO L225 Difference]: With dead ends: 602 [2021-03-11 14:47:55,848 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:47:55,848 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1013.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:55,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:47:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 375. [2021-03-11 14:47:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.411764705882353) internal successors, (1276), 374 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1276 transitions. [2021-03-11 14:47:55,856 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1276 transitions. Word has length 22 [2021-03-11 14:47:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:55,856 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1276 transitions. [2021-03-11 14:47:55,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1276 transitions. [2021-03-11 14:47:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:55,857 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:55,857 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:55,857 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1701 [2021-03-11 14:47:55,857 INFO L428 AbstractCegarLoop]: === Iteration 1703 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:55,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1656855909, now seen corresponding path program 1697 times [2021-03-11 14:47:55,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:55,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126284166] [2021-03-11 14:47:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:55,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:55,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:55,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:55,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:55,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:55,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:55,969 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:55,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:56,101 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:56,106 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:56,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:56,276 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:56,281 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:56,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:56,483 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:47:56,488 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:47:56,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:47:56,635 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:47:56,641 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:56,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:56,789 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:56,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126284166] [2021-03-11 14:47:56,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:56,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:56,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174372172] [2021-03-11 14:47:56,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:56,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:56,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:56,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:56,792 INFO L87 Difference]: Start difference. First operand 375 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:57,302 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:47:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:57,357 INFO L93 Difference]: Finished difference Result 600 states and 1744 transitions. [2021-03-11 14:47:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:57,367 INFO L225 Difference]: With dead ends: 600 [2021-03-11 14:47:57,367 INFO L226 Difference]: Without dead ends: 588 [2021-03-11 14:47:57,367 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1114.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:57,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-03-11 14:47:57,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 380. [2021-03-11 14:47:57,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.390501319261214) internal successors, (1285), 379 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1285 transitions. [2021-03-11 14:47:57,380 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1285 transitions. Word has length 22 [2021-03-11 14:47:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:57,381 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 1285 transitions. [2021-03-11 14:47:57,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1285 transitions. [2021-03-11 14:47:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:57,381 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:57,381 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:57,381 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1702 [2021-03-11 14:47:57,381 INFO L428 AbstractCegarLoop]: === Iteration 1704 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:57,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:57,382 INFO L82 PathProgramCache]: Analyzing trace with hash 53757399, now seen corresponding path program 1698 times [2021-03-11 14:47:57,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:57,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111427732] [2021-03-11 14:47:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:57,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:57,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:57,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:57,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:57,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:57,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:57,496 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:57,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:57,626 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:57,632 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:47:57,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:47:57,804 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2021-03-11 14:47:57,809 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:57,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:58,023 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:47:58,029 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:58,197 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:58,202 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:58,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:58,352 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:58,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111427732] [2021-03-11 14:47:58,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:58,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:58,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671977533] [2021-03-11 14:47:58,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:58,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:58,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:58,356 INFO L87 Difference]: Start difference. First operand 380 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:58,739 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:47:58,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:47:58,821 INFO L93 Difference]: Finished difference Result 604 states and 1747 transitions. [2021-03-11 14:47:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:47:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:47:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:47:58,831 INFO L225 Difference]: With dead ends: 604 [2021-03-11 14:47:58,831 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:47:58,831 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1060.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:47:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:47:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 371. [2021-03-11 14:47:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.424324324324324) internal successors, (1267), 370 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:58,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1267 transitions. [2021-03-11 14:47:58,838 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1267 transitions. Word has length 22 [2021-03-11 14:47:58,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:47:58,839 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1267 transitions. [2021-03-11 14:47:58,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:47:58,839 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1267 transitions. [2021-03-11 14:47:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:47:58,839 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:47:58,839 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:47:58,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1703 [2021-03-11 14:47:58,840 INFO L428 AbstractCegarLoop]: === Iteration 1705 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:47:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:47:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1395671803, now seen corresponding path program 1699 times [2021-03-11 14:47:58,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:47:58,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201753161] [2021-03-11 14:47:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:47:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:47:58,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:58,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:47:58,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:58,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:47:58,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:47:58,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:47:58,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:47:58,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:47:59,085 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:47:59,090 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:47:59,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:47:59,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:47:59,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:47:59,341 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:47:59,344 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:47:59,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:47:59,501 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:59,507 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:47:59,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:47:59,668 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:47:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:47:59,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201753161] [2021-03-11 14:47:59,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:47:59,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:47:59,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112606136] [2021-03-11 14:47:59,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:47:59,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:47:59,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:47:59,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:47:59,672 INFO L87 Difference]: Start difference. First operand 371 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:00,111 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:48:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:00,166 INFO L93 Difference]: Finished difference Result 578 states and 1695 transitions. [2021-03-11 14:48:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:00,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:00,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:00,177 INFO L225 Difference]: With dead ends: 578 [2021-03-11 14:48:00,177 INFO L226 Difference]: Without dead ends: 569 [2021-03-11 14:48:00,177 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 937.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-03-11 14:48:00,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 374. [2021-03-11 14:48:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.415549597855228) internal successors, (1274), 373 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1274 transitions. [2021-03-11 14:48:00,185 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1274 transitions. Word has length 22 [2021-03-11 14:48:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:00,186 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1274 transitions. [2021-03-11 14:48:00,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1274 transitions. [2021-03-11 14:48:00,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:00,186 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:00,186 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:00,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1704 [2021-03-11 14:48:00,187 INFO L428 AbstractCegarLoop]: === Iteration 1706 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:00,187 INFO L82 PathProgramCache]: Analyzing trace with hash -860442001, now seen corresponding path program 1700 times [2021-03-11 14:48:00,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:00,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556992265] [2021-03-11 14:48:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:00,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:00,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:00,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:00,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:00,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:00,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:00,316 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:00,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:00,461 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:48:00,466 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:48:00,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:48:00,666 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:48:00,673 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:00,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:00,908 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2021-03-11 14:48:00,913 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:00,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:01,073 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:48:01,079 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:01,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556992265] [2021-03-11 14:48:01,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:01,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:01,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76037969] [2021-03-11 14:48:01,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:01,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:01,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:01,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:01,219 INFO L87 Difference]: Start difference. First operand 374 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:01,696 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:48:01,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:01,772 INFO L93 Difference]: Finished difference Result 581 states and 1700 transitions. [2021-03-11 14:48:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:01,782 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:01,784 INFO L225 Difference]: With dead ends: 581 [2021-03-11 14:48:01,784 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:48:01,784 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1201.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:01,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:48:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 373. [2021-03-11 14:48:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:48:01,791 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:48:01,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:01,791 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:48:01,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:48:01,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:01,792 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:01,792 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:01,792 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1705 [2021-03-11 14:48:01,792 INFO L428 AbstractCegarLoop]: === Iteration 1707 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:01,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:01,793 INFO L82 PathProgramCache]: Analyzing trace with hash -301580215, now seen corresponding path program 1701 times [2021-03-11 14:48:01,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:01,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700158622] [2021-03-11 14:48:01,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:01,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:01,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:01,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:01,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:01,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:01,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:01,914 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:01,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:02,062 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:48:02,068 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:48:02,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:48:02,277 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:48:02,284 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:02,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:02,478 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-11 14:48:02,484 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:02,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:02,664 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:02,670 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:02,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:02,827 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:02,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700158622] [2021-03-11 14:48:02,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:02,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:02,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353633606] [2021-03-11 14:48:02,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:02,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:02,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:02,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:02,831 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:03,221 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:48:03,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:03,272 INFO L93 Difference]: Finished difference Result 583 states and 1703 transitions. [2021-03-11 14:48:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:03,282 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:03,283 INFO L225 Difference]: With dead ends: 583 [2021-03-11 14:48:03,283 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:48:03,283 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1115.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:48:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 375. [2021-03-11 14:48:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.409090909090909) internal successors, (1275), 374 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1275 transitions. [2021-03-11 14:48:03,291 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1275 transitions. Word has length 22 [2021-03-11 14:48:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:03,291 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1275 transitions. [2021-03-11 14:48:03,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1275 transitions. [2021-03-11 14:48:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:03,292 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:03,292 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:03,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1706 [2021-03-11 14:48:03,292 INFO L428 AbstractCegarLoop]: === Iteration 1708 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:03,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash -839435793, now seen corresponding path program 1702 times [2021-03-11 14:48:03,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:03,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14178245] [2021-03-11 14:48:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:03,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:03,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:03,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:03,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:03,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:03,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:03,412 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:03,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:03,555 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:48:03,560 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:48:03,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:48:03,759 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:48:03,764 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:03,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:03,968 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2021-03-11 14:48:03,974 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:03,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:04,153 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:04,159 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:04,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:04,311 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:04,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14178245] [2021-03-11 14:48:04,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:04,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:04,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079543579] [2021-03-11 14:48:04,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:04,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:04,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:04,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:04,314 INFO L87 Difference]: Start difference. First operand 375 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:04,716 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:48:04,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:04,802 INFO L93 Difference]: Finished difference Result 590 states and 1715 transitions. [2021-03-11 14:48:04,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:04,811 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:04,812 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:48:04,813 INFO L226 Difference]: Without dead ends: 572 [2021-03-11 14:48:04,813 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1140.9ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-03-11 14:48:04,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 373. [2021-03-11 14:48:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.413978494623656) internal successors, (1270), 372 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1270 transitions. [2021-03-11 14:48:04,824 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1270 transitions. Word has length 22 [2021-03-11 14:48:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:04,824 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1270 transitions. [2021-03-11 14:48:04,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1270 transitions. [2021-03-11 14:48:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:04,825 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:04,825 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:04,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1707 [2021-03-11 14:48:04,825 INFO L428 AbstractCegarLoop]: === Iteration 1709 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash -354095735, now seen corresponding path program 1703 times [2021-03-11 14:48:04,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:04,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900763256] [2021-03-11 14:48:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:04,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:04,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:04,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:04,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:04,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:04,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:04,938 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:04,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:05,072 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:48:05,077 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:48:05,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:48:05,245 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:48:05,251 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:05,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:05,466 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:48:05,472 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:05,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:05,626 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2021-03-11 14:48:05,632 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:05,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:05,787 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:05,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900763256] [2021-03-11 14:48:05,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:05,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:05,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642512569] [2021-03-11 14:48:05,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:05,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:05,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:05,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:05,790 INFO L87 Difference]: Start difference. First operand 373 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:06,248 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2021-03-11 14:48:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:06,299 INFO L93 Difference]: Finished difference Result 592 states and 1722 transitions. [2021-03-11 14:48:06,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:06,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:06,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:06,307 INFO L225 Difference]: With dead ends: 592 [2021-03-11 14:48:06,307 INFO L226 Difference]: Without dead ends: 580 [2021-03-11 14:48:06,307 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1115.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:06,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-03-11 14:48:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 378. [2021-03-11 14:48:06,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.3925729442970822) internal successors, (1279), 377 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1279 transitions. [2021-03-11 14:48:06,314 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1279 transitions. Word has length 22 [2021-03-11 14:48:06,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:06,314 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1279 transitions. [2021-03-11 14:48:06,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:06,314 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1279 transitions. [2021-03-11 14:48:06,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:06,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:06,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:06,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1708 [2021-03-11 14:48:06,315 INFO L428 AbstractCegarLoop]: === Iteration 1710 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1427181115, now seen corresponding path program 1704 times [2021-03-11 14:48:06,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:06,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102233151] [2021-03-11 14:48:06,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:06,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:06,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:06,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:06,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:06,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:06,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:06,426 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:06,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:06,559 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 10 [2021-03-11 14:48:06,565 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-03-11 14:48:06,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-03-11 14:48:06,744 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2021-03-11 14:48:06,750 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:06,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:06,961 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2021-03-11 14:48:06,967 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:06,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:07,125 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:07,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:07,277 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2021-03-11 14:48:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:07,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102233151] [2021-03-11 14:48:07,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:07,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:07,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479374050] [2021-03-11 14:48:07,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:07,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:07,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:07,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:07,282 INFO L87 Difference]: Start difference. First operand 378 states and 1279 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:07,667 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2021-03-11 14:48:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:07,758 INFO L93 Difference]: Finished difference Result 596 states and 1725 transitions. [2021-03-11 14:48:07,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:07,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:07,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:07,769 INFO L225 Difference]: With dead ends: 596 [2021-03-11 14:48:07,769 INFO L226 Difference]: Without dead ends: 571 [2021-03-11 14:48:07,769 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1056.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-03-11 14:48:07,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 369. [2021-03-11 14:48:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 3.4293478260869565) internal successors, (1262), 368 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1262 transitions. [2021-03-11 14:48:07,777 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1262 transitions. Word has length 22 [2021-03-11 14:48:07,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:07,777 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 1262 transitions. [2021-03-11 14:48:07,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:07,777 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1262 transitions. [2021-03-11 14:48:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:07,778 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:07,778 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:07,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1709 [2021-03-11 14:48:07,778 INFO L428 AbstractCegarLoop]: === Iteration 1711 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash 453321311, now seen corresponding path program 1705 times [2021-03-11 14:48:07,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:07,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345336459] [2021-03-11 14:48:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:07,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:07,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:07,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:07,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:07,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:07,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:07,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:07,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:07,981 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:07,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:08,148 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:08,153 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:08,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:08,297 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:08,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:08,457 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:08,463 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:08,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:08,615 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:08,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345336459] [2021-03-11 14:48:08,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:08,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:08,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329780947] [2021-03-11 14:48:08,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:08,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:08,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:08,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:08,619 INFO L87 Difference]: Start difference. First operand 369 states and 1262 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:09,181 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:09,234 INFO L93 Difference]: Finished difference Result 575 states and 1686 transitions. [2021-03-11 14:48:09,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:09,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:09,243 INFO L225 Difference]: With dead ends: 575 [2021-03-11 14:48:09,243 INFO L226 Difference]: Without dead ends: 564 [2021-03-11 14:48:09,244 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1033.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:09,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-03-11 14:48:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 374. [2021-03-11 14:48:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.423592493297587) internal successors, (1277), 373 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1277 transitions. [2021-03-11 14:48:09,251 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1277 transitions. Word has length 22 [2021-03-11 14:48:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:09,251 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1277 transitions. [2021-03-11 14:48:09,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1277 transitions. [2021-03-11 14:48:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:09,252 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:09,252 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:09,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1710 [2021-03-11 14:48:09,252 INFO L428 AbstractCegarLoop]: === Iteration 1712 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:09,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:09,252 INFO L82 PathProgramCache]: Analyzing trace with hash 607813453, now seen corresponding path program 1706 times [2021-03-11 14:48:09,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:09,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061362709] [2021-03-11 14:48:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:09,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:09,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:09,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:09,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:09,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:09,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:09,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:09,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:09,438 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:09,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:09,601 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:09,607 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:09,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:09,766 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:09,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:09,946 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:09,952 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:09,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:10,107 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:10,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061362709] [2021-03-11 14:48:10,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:10,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:10,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216684858] [2021-03-11 14:48:10,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:10,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:10,111 INFO L87 Difference]: Start difference. First operand 374 states and 1277 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:10,581 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:10,646 INFO L93 Difference]: Finished difference Result 573 states and 1681 transitions. [2021-03-11 14:48:10,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:10,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:10,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:10,657 INFO L225 Difference]: With dead ends: 573 [2021-03-11 14:48:10,658 INFO L226 Difference]: Without dead ends: 563 [2021-03-11 14:48:10,658 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 957.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-03-11 14:48:10,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 373. [2021-03-11 14:48:10,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4274193548387095) internal successors, (1275), 372 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:10,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1275 transitions. [2021-03-11 14:48:10,665 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1275 transitions. Word has length 22 [2021-03-11 14:48:10,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:10,665 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1275 transitions. [2021-03-11 14:48:10,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1275 transitions. [2021-03-11 14:48:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:10,666 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:10,666 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:10,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1711 [2021-03-11 14:48:10,666 INFO L428 AbstractCegarLoop]: === Iteration 1713 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash 959667577, now seen corresponding path program 1707 times [2021-03-11 14:48:10,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:10,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991770846] [2021-03-11 14:48:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:10,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:10,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:10,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:10,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:10,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:10,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:10,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:10,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:10,884 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:10,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:11,063 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:11,069 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:11,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:11,268 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:11,273 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:11,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:11,417 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:11,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:11,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991770846] [2021-03-11 14:48:11,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:11,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:11,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109710351] [2021-03-11 14:48:11,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:11,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:11,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:11,562 INFO L87 Difference]: Start difference. First operand 373 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:12,162 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:12,217 INFO L93 Difference]: Finished difference Result 585 states and 1706 transitions. [2021-03-11 14:48:12,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:12,226 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:12,228 INFO L225 Difference]: With dead ends: 585 [2021-03-11 14:48:12,228 INFO L226 Difference]: Without dead ends: 574 [2021-03-11 14:48:12,228 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1110.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-03-11 14:48:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 377. [2021-03-11 14:48:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 3.4095744680851063) internal successors, (1282), 376 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 1282 transitions. [2021-03-11 14:48:12,240 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 1282 transitions. Word has length 22 [2021-03-11 14:48:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:12,240 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 1282 transitions. [2021-03-11 14:48:12,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 1282 transitions. [2021-03-11 14:48:12,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:12,241 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:12,241 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:12,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1712 [2021-03-11 14:48:12,241 INFO L428 AbstractCegarLoop]: === Iteration 1714 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1032974989, now seen corresponding path program 1708 times [2021-03-11 14:48:12,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:12,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492397974] [2021-03-11 14:48:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:12,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:12,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:12,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:12,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:12,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:12,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:12,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:12,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:12,461 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:12,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:12,633 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:12,639 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:12,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:12,858 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:12,865 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:12,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:13,044 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:13,051 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:13,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:13,231 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:13,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492397974] [2021-03-11 14:48:13,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:13,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:13,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904882690] [2021-03-11 14:48:13,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:13,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:13,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:13,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:13,235 INFO L87 Difference]: Start difference. First operand 377 states and 1282 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:13,674 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:13,757 INFO L93 Difference]: Finished difference Result 590 states and 1712 transitions. [2021-03-11 14:48:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:13,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:13,768 INFO L225 Difference]: With dead ends: 590 [2021-03-11 14:48:13,768 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:48:13,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1088.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:48:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 373. [2021-03-11 14:48:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.422043010752688) internal successors, (1273), 372 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1273 transitions. [2021-03-11 14:48:13,776 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1273 transitions. Word has length 22 [2021-03-11 14:48:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:13,776 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1273 transitions. [2021-03-11 14:48:13,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1273 transitions. [2021-03-11 14:48:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:13,777 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:13,777 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:13,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1713 [2021-03-11 14:48:13,777 INFO L428 AbstractCegarLoop]: === Iteration 1715 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:13,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:13,777 INFO L82 PathProgramCache]: Analyzing trace with hash -486278135, now seen corresponding path program 1709 times [2021-03-11 14:48:13,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:13,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740422820] [2021-03-11 14:48:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:13,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:13,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:13,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:13,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:13,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:13,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:13,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:13,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:13,969 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:13,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:14,069 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:14,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:14,208 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:48:14,214 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:14,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:14,400 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:14,406 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:14,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:14,574 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:14,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740422820] [2021-03-11 14:48:14,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:14,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:14,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368725809] [2021-03-11 14:48:14,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:14,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:14,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:14,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:14,579 INFO L87 Difference]: Start difference. First operand 373 states and 1273 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:15,069 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:15,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:15,124 INFO L93 Difference]: Finished difference Result 579 states and 1690 transitions. [2021-03-11 14:48:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:15,135 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:48:15,136 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:48:15,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 895.8ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:48:15,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 375. [2021-03-11 14:48:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.411764705882353) internal successors, (1276), 374 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:15,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1276 transitions. [2021-03-11 14:48:15,143 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1276 transitions. Word has length 22 [2021-03-11 14:48:15,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:15,143 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1276 transitions. [2021-03-11 14:48:15,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:15,144 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1276 transitions. [2021-03-11 14:48:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:15,144 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:15,144 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:15,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1714 [2021-03-11 14:48:15,144 INFO L428 AbstractCegarLoop]: === Iteration 1716 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1024133713, now seen corresponding path program 1710 times [2021-03-11 14:48:15,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:15,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445999820] [2021-03-11 14:48:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:15,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:15,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:15,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:15,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:15,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:15,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:15,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:15,370 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:15,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:15,541 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:15,547 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:15,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:15,755 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2021-03-11 14:48:15,761 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:15,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:15,930 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:15,936 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:15,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:16,107 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:16,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445999820] [2021-03-11 14:48:16,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52565876] [2021-03-11 14:48:16,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:16,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:16,112 INFO L87 Difference]: Start difference. First operand 375 states and 1276 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:16,532 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:16,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:16,605 INFO L93 Difference]: Finished difference Result 586 states and 1702 transitions. [2021-03-11 14:48:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:16,617 INFO L225 Difference]: With dead ends: 586 [2021-03-11 14:48:16,617 INFO L226 Difference]: Without dead ends: 566 [2021-03-11 14:48:16,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1059.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:16,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-03-11 14:48:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 371. [2021-03-11 14:48:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.427027027027027) internal successors, (1268), 370 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1268 transitions. [2021-03-11 14:48:16,625 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1268 transitions. Word has length 22 [2021-03-11 14:48:16,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:16,625 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1268 transitions. [2021-03-11 14:48:16,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1268 transitions. [2021-03-11 14:48:16,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:16,626 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:16,626 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:16,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1715 [2021-03-11 14:48:16,626 INFO L428 AbstractCegarLoop]: === Iteration 1717 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:16,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:16,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1486512825, now seen corresponding path program 1711 times [2021-03-11 14:48:16,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:16,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198150077] [2021-03-11 14:48:16,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:16,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:16,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:16,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:16,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:16,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:16,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:16,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:16,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:16,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:16,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:16,963 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:16,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:17,115 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:17,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:17,285 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:17,291 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:17,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:17,448 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:17,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198150077] [2021-03-11 14:48:17,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:17,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:17,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411953424] [2021-03-11 14:48:17,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:17,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:17,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:17,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:17,452 INFO L87 Difference]: Start difference. First operand 371 states and 1268 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:18,065 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:18,116 INFO L93 Difference]: Finished difference Result 568 states and 1670 transitions. [2021-03-11 14:48:18,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:18,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:18,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:18,126 INFO L225 Difference]: With dead ends: 568 [2021-03-11 14:48:18,126 INFO L226 Difference]: Without dead ends: 557 [2021-03-11 14:48:18,126 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1018.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-03-11 14:48:18,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 373. [2021-03-11 14:48:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.4193548387096775) internal successors, (1272), 372 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1272 transitions. [2021-03-11 14:48:18,133 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1272 transitions. Word has length 22 [2021-03-11 14:48:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:18,133 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1272 transitions. [2021-03-11 14:48:18,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1272 transitions. [2021-03-11 14:48:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:18,134 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:18,134 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:18,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1716 [2021-03-11 14:48:18,134 INFO L428 AbstractCegarLoop]: === Iteration 1718 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1641004967, now seen corresponding path program 1712 times [2021-03-11 14:48:18,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:18,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314439311] [2021-03-11 14:48:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:18,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:18,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:18,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:18,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:18,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:18,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:18,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:18,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:18,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:18,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:18,449 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:18,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:18,587 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:18,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:18,742 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:18,748 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:18,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:18,911 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:18,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314439311] [2021-03-11 14:48:18,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:18,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:18,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304418023] [2021-03-11 14:48:18,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:18,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:18,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:18,915 INFO L87 Difference]: Start difference. First operand 373 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:19,366 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:19,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:19,429 INFO L93 Difference]: Finished difference Result 566 states and 1665 transitions. [2021-03-11 14:48:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:19,439 INFO L225 Difference]: With dead ends: 566 [2021-03-11 14:48:19,439 INFO L226 Difference]: Without dead ends: 556 [2021-03-11 14:48:19,440 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 872.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-03-11 14:48:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 372. [2021-03-11 14:48:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.4231805929919137) internal successors, (1270), 371 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1270 transitions. [2021-03-11 14:48:19,447 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1270 transitions. Word has length 22 [2021-03-11 14:48:19,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:19,447 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1270 transitions. [2021-03-11 14:48:19,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1270 transitions. [2021-03-11 14:48:19,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:19,448 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:19,448 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:19,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1717 [2021-03-11 14:48:19,448 INFO L428 AbstractCegarLoop]: === Iteration 1719 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:19,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:19,448 INFO L82 PathProgramCache]: Analyzing trace with hash -701670351, now seen corresponding path program 1713 times [2021-03-11 14:48:19,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:19,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914148542] [2021-03-11 14:48:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:19,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:19,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:19,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:19,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:19,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:19,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:19,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:19,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:19,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:19,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:19,769 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:19,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:19,912 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:19,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:20,087 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:20,093 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:20,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:20,251 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:20,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914148542] [2021-03-11 14:48:20,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:20,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:20,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952101765] [2021-03-11 14:48:20,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:20,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:20,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:20,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:20,255 INFO L87 Difference]: Start difference. First operand 372 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:20,748 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:20,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:20,795 INFO L93 Difference]: Finished difference Result 571 states and 1678 transitions. [2021-03-11 14:48:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:20,805 INFO L225 Difference]: With dead ends: 571 [2021-03-11 14:48:20,805 INFO L226 Difference]: Without dead ends: 560 [2021-03-11 14:48:20,806 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 988.2ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-03-11 14:48:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 375. [2021-03-11 14:48:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.409090909090909) internal successors, (1275), 374 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1275 transitions. [2021-03-11 14:48:20,813 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1275 transitions. Word has length 22 [2021-03-11 14:48:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:20,813 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1275 transitions. [2021-03-11 14:48:20,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1275 transitions. [2021-03-11 14:48:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:20,813 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:20,813 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:20,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1718 [2021-03-11 14:48:20,814 INFO L428 AbstractCegarLoop]: === Iteration 1720 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash 455654247, now seen corresponding path program 1714 times [2021-03-11 14:48:20,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:20,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662167885] [2021-03-11 14:48:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:20,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:20,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:20,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:20,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:20,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:20,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:20,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:20,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:21,019 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:21,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:21,128 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:21,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:21,266 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:21,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:21,435 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:21,441 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:21,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:21,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:21,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662167885] [2021-03-11 14:48:21,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:21,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:21,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64092779] [2021-03-11 14:48:21,585 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:21,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:21,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:21,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:21,585 INFO L87 Difference]: Start difference. First operand 375 states and 1275 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:22,063 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:22,119 INFO L93 Difference]: Finished difference Result 564 states and 1671 transitions. [2021-03-11 14:48:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:22,130 INFO L225 Difference]: With dead ends: 564 [2021-03-11 14:48:22,130 INFO L226 Difference]: Without dead ends: 548 [2021-03-11 14:48:22,130 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 949.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:22,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-03-11 14:48:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 372. [2021-03-11 14:48:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 3.420485175202156) internal successors, (1269), 371 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 1269 transitions. [2021-03-11 14:48:22,137 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 1269 transitions. Word has length 22 [2021-03-11 14:48:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:22,137 INFO L480 AbstractCegarLoop]: Abstraction has 372 states and 1269 transitions. [2021-03-11 14:48:22,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 1269 transitions. [2021-03-11 14:48:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:22,138 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:22,138 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:22,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1719 [2021-03-11 14:48:22,138 INFO L428 AbstractCegarLoop]: === Iteration 1721 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:22,138 INFO L82 PathProgramCache]: Analyzing trace with hash 2147351233, now seen corresponding path program 1715 times [2021-03-11 14:48:22,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:22,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711677736] [2021-03-11 14:48:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:22,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:22,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:22,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:22,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:22,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:22,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:22,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:22,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:22,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:22,455 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:22,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:22,653 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:22,658 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:22,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:22,807 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:22,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:22,958 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:22,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711677736] [2021-03-11 14:48:22,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:22,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:22,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387697079] [2021-03-11 14:48:22,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:22,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:22,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:22,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:22,962 INFO L87 Difference]: Start difference. First operand 372 states and 1269 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:23,437 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:23,489 INFO L93 Difference]: Finished difference Result 567 states and 1667 transitions. [2021-03-11 14:48:23,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:23,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:23,499 INFO L225 Difference]: With dead ends: 567 [2021-03-11 14:48:23,499 INFO L226 Difference]: Without dead ends: 558 [2021-03-11 14:48:23,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 920.5ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-03-11 14:48:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 373. [2021-03-11 14:48:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.413978494623656) internal successors, (1270), 372 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1270 transitions. [2021-03-11 14:48:23,507 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1270 transitions. Word has length 22 [2021-03-11 14:48:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:23,507 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 1270 transitions. [2021-03-11 14:48:23,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:23,507 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1270 transitions. [2021-03-11 14:48:23,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:23,508 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:23,508 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:23,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1720 [2021-03-11 14:48:23,508 INFO L428 AbstractCegarLoop]: === Iteration 1722 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:23,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1445303, now seen corresponding path program 1716 times [2021-03-11 14:48:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121945431] [2021-03-11 14:48:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:23,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:23,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:23,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:23,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:23,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:23,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:23,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:23,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:23,730 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:23,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:23,845 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:23,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:24,048 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:24,053 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:24,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:24,222 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:24,228 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:24,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:24,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121945431] [2021-03-11 14:48:24,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:24,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:24,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146538868] [2021-03-11 14:48:24,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:24,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:24,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:24,373 INFO L87 Difference]: Start difference. First operand 373 states and 1270 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:24,784 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:24,852 INFO L93 Difference]: Finished difference Result 562 states and 1666 transitions. [2021-03-11 14:48:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:24,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:24,863 INFO L225 Difference]: With dead ends: 562 [2021-03-11 14:48:24,863 INFO L226 Difference]: Without dead ends: 547 [2021-03-11 14:48:24,863 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1051.6ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-03-11 14:48:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 371. [2021-03-11 14:48:24,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.424324324324324) internal successors, (1267), 370 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1267 transitions. [2021-03-11 14:48:24,871 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1267 transitions. Word has length 22 [2021-03-11 14:48:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:24,871 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1267 transitions. [2021-03-11 14:48:24,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1267 transitions. [2021-03-11 14:48:24,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:24,871 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:24,871 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:24,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1721 [2021-03-11 14:48:24,872 INFO L428 AbstractCegarLoop]: === Iteration 1723 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2110162007, now seen corresponding path program 1717 times [2021-03-11 14:48:24,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:24,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99481994] [2021-03-11 14:48:24,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:24,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:24,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:24,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:24,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:24,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:24,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:24,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:24,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:25,087 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:25,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:25,206 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:25,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:25,341 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:25,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:25,505 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:25,510 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:25,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:25,666 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:25,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99481994] [2021-03-11 14:48:25,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:25,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:25,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944073608] [2021-03-11 14:48:25,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:25,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:25,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:25,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:25,670 INFO L87 Difference]: Start difference. First operand 371 states and 1267 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:26,283 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:26,328 INFO L93 Difference]: Finished difference Result 593 states and 1731 transitions. [2021-03-11 14:48:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:26,338 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:48:26,338 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:48:26,339 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 996.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:26,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:48:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 378. [2021-03-11 14:48:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 3.4111405835543764) internal successors, (1286), 377 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 1286 transitions. [2021-03-11 14:48:26,346 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 1286 transitions. Word has length 22 [2021-03-11 14:48:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:26,346 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 1286 transitions. [2021-03-11 14:48:26,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 1286 transitions. [2021-03-11 14:48:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:26,347 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:26,347 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:26,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1722 [2021-03-11 14:48:26,347 INFO L428 AbstractCegarLoop]: === Iteration 1724 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1027480691, now seen corresponding path program 1718 times [2021-03-11 14:48:26,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:26,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647479655] [2021-03-11 14:48:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:26,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:26,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:26,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:26,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:26,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:26,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:26,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:26,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:26,544 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:26,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:26,649 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:26,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:26,777 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:26,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:26,948 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:26,953 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:26,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:27,107 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:27,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647479655] [2021-03-11 14:48:27,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:27,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:27,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452187554] [2021-03-11 14:48:27,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:27,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:27,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:27,111 INFO L87 Difference]: Start difference. First operand 378 states and 1286 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:27,704 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:27,768 INFO L93 Difference]: Finished difference Result 595 states and 1732 transitions. [2021-03-11 14:48:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:27,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:27,779 INFO L225 Difference]: With dead ends: 595 [2021-03-11 14:48:27,779 INFO L226 Difference]: Without dead ends: 579 [2021-03-11 14:48:27,780 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 970.0ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:27,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-03-11 14:48:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 375. [2021-03-11 14:48:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.4171122994652405) internal successors, (1278), 374 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1278 transitions. [2021-03-11 14:48:27,787 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1278 transitions. Word has length 22 [2021-03-11 14:48:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:27,787 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1278 transitions. [2021-03-11 14:48:27,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1278 transitions. [2021-03-11 14:48:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:27,788 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:27,788 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:27,788 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1723 [2021-03-11 14:48:27,788 INFO L428 AbstractCegarLoop]: === Iteration 1725 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:27,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:27,788 INFO L82 PathProgramCache]: Analyzing trace with hash 509724153, now seen corresponding path program 1719 times [2021-03-11 14:48:27,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:27,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285319642] [2021-03-11 14:48:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:27,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:27,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:27,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:27,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:27,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:27,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:27,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:27,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:28,003 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:28,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:28,117 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:28,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:28,325 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:28,331 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:28,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:28,499 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:28,505 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:28,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:28,657 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:28,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285319642] [2021-03-11 14:48:28,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:28,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:28,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420966659] [2021-03-11 14:48:28,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:28,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:28,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:28,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:28,660 INFO L87 Difference]: Start difference. First operand 375 states and 1278 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:29,237 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:29,291 INFO L93 Difference]: Finished difference Result 593 states and 1725 transitions. [2021-03-11 14:48:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:29,302 INFO L225 Difference]: With dead ends: 593 [2021-03-11 14:48:29,302 INFO L226 Difference]: Without dead ends: 582 [2021-03-11 14:48:29,302 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1059.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-03-11 14:48:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 379. [2021-03-11 14:48:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.3994708994708995) internal successors, (1285), 378 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1285 transitions. [2021-03-11 14:48:29,310 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1285 transitions. Word has length 22 [2021-03-11 14:48:29,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:29,310 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 1285 transitions. [2021-03-11 14:48:29,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1285 transitions. [2021-03-11 14:48:29,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:29,310 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:29,310 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:29,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1724 [2021-03-11 14:48:29,311 INFO L428 AbstractCegarLoop]: === Iteration 1726 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:29,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:29,311 INFO L82 PathProgramCache]: Analyzing trace with hash 583031565, now seen corresponding path program 1720 times [2021-03-11 14:48:29,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:29,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272239980] [2021-03-11 14:48:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:29,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:29,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:29,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:29,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:29,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:29,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:29,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:29,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:29,508 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:29,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:29,615 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:29,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:29,824 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:29,830 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:29,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:30,000 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:30,006 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:30,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:30,158 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:30,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272239980] [2021-03-11 14:48:30,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:30,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:30,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939755405] [2021-03-11 14:48:30,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:30,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:30,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:30,162 INFO L87 Difference]: Start difference. First operand 379 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:30,610 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:30,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:30,690 INFO L93 Difference]: Finished difference Result 598 states and 1731 transitions. [2021-03-11 14:48:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:30,699 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:30,700 INFO L225 Difference]: With dead ends: 598 [2021-03-11 14:48:30,700 INFO L226 Difference]: Without dead ends: 578 [2021-03-11 14:48:30,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 945.7ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-03-11 14:48:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 375. [2021-03-11 14:48:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.406417112299465) internal successors, (1274), 374 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1274 transitions. [2021-03-11 14:48:30,708 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1274 transitions. Word has length 22 [2021-03-11 14:48:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:30,708 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 1274 transitions. [2021-03-11 14:48:30,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1274 transitions. [2021-03-11 14:48:30,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:30,708 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:30,708 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:30,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1725 [2021-03-11 14:48:30,709 INFO L428 AbstractCegarLoop]: === Iteration 1727 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:30,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:30,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1245049081, now seen corresponding path program 1721 times [2021-03-11 14:48:30,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:30,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618937266] [2021-03-11 14:48:30,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:30,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:30,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:30,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:30,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:30,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:30,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:30,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:30,921 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:30,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:31,040 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:31,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:31,183 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:31,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:31,375 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:31,381 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:31,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:31,554 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:31,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:31,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618937266] [2021-03-11 14:48:31,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:31,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:31,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847667669] [2021-03-11 14:48:31,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:31,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:31,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:31,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:31,559 INFO L87 Difference]: Start difference. First operand 375 states and 1274 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:32,234 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2021-03-11 14:48:32,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:32,294 INFO L93 Difference]: Finished difference Result 599 states and 1735 transitions. [2021-03-11 14:48:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:32,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:32,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:32,306 INFO L225 Difference]: With dead ends: 599 [2021-03-11 14:48:32,306 INFO L226 Difference]: Without dead ends: 586 [2021-03-11 14:48:32,306 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1097.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:32,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-03-11 14:48:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 381. [2021-03-11 14:48:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.3815789473684212) internal successors, (1285), 380 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1285 transitions. [2021-03-11 14:48:32,314 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1285 transitions. Word has length 22 [2021-03-11 14:48:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:32,314 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 1285 transitions. [2021-03-11 14:48:32,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:32,314 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1285 transitions. [2021-03-11 14:48:32,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:32,315 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:32,315 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:32,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1726 [2021-03-11 14:48:32,315 INFO L428 AbstractCegarLoop]: === Iteration 1728 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:32,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:32,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2100355735, now seen corresponding path program 1722 times [2021-03-11 14:48:32,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:32,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001702070] [2021-03-11 14:48:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:32,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:32,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:32,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:32,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:32,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:32,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:32,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:32,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:32,546 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-03-11 14:48:32,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 14:48:32,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-03-11 14:48:32,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 14:48:32,834 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-03-11 14:48:32,841 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:32,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:33,023 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:33,031 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:33,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:33,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001702070] [2021-03-11 14:48:33,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:33,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:33,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973705047] [2021-03-11 14:48:33,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:33,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:33,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:33,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:33,176 INFO L87 Difference]: Start difference. First operand 381 states and 1285 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:33,589 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:33,681 INFO L93 Difference]: Finished difference Result 594 states and 1721 transitions. [2021-03-11 14:48:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:33,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:33,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:33,694 INFO L225 Difference]: With dead ends: 594 [2021-03-11 14:48:33,694 INFO L226 Difference]: Without dead ends: 568 [2021-03-11 14:48:33,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 928.3ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-03-11 14:48:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 371. [2021-03-11 14:48:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.418918918918919) internal successors, (1265), 370 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1265 transitions. [2021-03-11 14:48:33,702 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1265 transitions. Word has length 22 [2021-03-11 14:48:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:33,702 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 1265 transitions. [2021-03-11 14:48:33,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1265 transitions. [2021-03-11 14:48:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:33,703 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:33,703 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:33,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1727 [2021-03-11 14:48:33,703 INFO L428 AbstractCegarLoop]: === Iteration 1729 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:33,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:33,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1704716923, now seen corresponding path program 1723 times [2021-03-11 14:48:33,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:33,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710279482] [2021-03-11 14:48:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:33,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:33,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:33,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:33,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:33,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:33,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:33,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:33,948 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:34,137 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:34,144 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:34,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:34,361 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:34,366 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-03-11 14:48:34,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-11 14:48:34,536 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:34,541 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:34,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:34,700 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:34,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710279482] [2021-03-11 14:48:34,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:34,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:34,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119694615] [2021-03-11 14:48:34,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:34,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:34,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:34,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:34,704 INFO L87 Difference]: Start difference. First operand 371 states and 1265 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:35,200 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-03-11 14:48:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:48:35,260 INFO L93 Difference]: Finished difference Result 579 states and 1691 transitions. [2021-03-11 14:48:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 14:48:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-03-11 14:48:35,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:48:35,271 INFO L225 Difference]: With dead ends: 579 [2021-03-11 14:48:35,271 INFO L226 Difference]: Without dead ends: 570 [2021-03-11 14:48:35,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1089.1ms TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2021-03-11 14:48:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-03-11 14:48:35,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 374. [2021-03-11 14:48:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4101876675603218) internal successors, (1272), 373 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1272 transitions. [2021-03-11 14:48:35,283 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1272 transitions. Word has length 22 [2021-03-11 14:48:35,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:48:35,283 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 1272 transitions. [2021-03-11 14:48:35,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 14:48:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1272 transitions. [2021-03-11 14:48:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-03-11 14:48:35,284 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:48:35,284 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 14:48:35,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1728 [2021-03-11 14:48:35,284 INFO L428 AbstractCegarLoop]: === Iteration 1730 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-03-11 14:48:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:48:35,284 INFO L82 PathProgramCache]: Analyzing trace with hash 441453837, now seen corresponding path program 1724 times [2021-03-11 14:48:35,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:48:35,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91693871] [2021-03-11 14:48:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:48:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:48:35,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:35,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 14:48:35,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:35,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 14:48:35,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:35,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 14:48:35,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:48:35,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 14:48:35,491 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-03-11 14:48:35,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 14:48:35,643 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2021-03-11 14:48:35,648 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-03-11 14:48:35,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-03-11 14:48:35,859 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2021-03-11 14:48:35,865 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-03-11 14:48:35,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-11 14:48:36,028 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 14:48:36,033 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-03-11 14:48:36,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-03-11 14:48:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:48:36,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91693871] [2021-03-11 14:48:36,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:48:36,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 14:48:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009174828] [2021-03-11 14:48:36,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-11 14:48:36,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:48:36,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-11 14:48:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-11 14:48:36,163 INFO L87 Difference]: Start difference. First operand 374 states and 1272 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-03-11 14:48:36,443 WARN L222 SmtUtils]: Removed 14 from assertion stack [2021-03-11 14:48:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 14:48:36,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1729 [2021-03-11 14:48:36,444 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 14:48:36,447 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 14:48:36,448 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:48:36 BasicIcfg [2021-03-11 14:48:36,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:48:36,449 INFO L168 Benchmark]: Toolchain (without parser) took 814582.51 ms. Allocated memory was 369.1 MB in the beginning and 530.6 MB in the end (delta: 161.5 MB). Free memory was 349.3 MB in the beginning and 449.6 MB in the end (delta: -100.3 MB). Peak memory consumption was 62.5 MB. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L168 Benchmark]: Boogie PL CUP Parser took 2.11 ms. Allocated memory is still 369.1 MB. Free memory was 350.3 MB in the beginning and 350.2 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.13 ms. Allocated memory is still 369.1 MB. Free memory was 348.7 MB in the beginning and 347.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L168 Benchmark]: Boogie Preprocessor took 9.26 ms. Allocated memory is still 369.1 MB. Free memory was 347.3 MB in the beginning and 346.3 MB in the end (delta: 917.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L168 Benchmark]: RCFGBuilder took 249.71 ms. Allocated memory is still 369.1 MB. Free memory was 346.3 MB in the beginning and 335.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L168 Benchmark]: TraceAbstraction took 814297.13 ms. Allocated memory was 369.1 MB in the beginning and 530.6 MB in the end (delta: 161.5 MB). Free memory was 335.0 MB in the beginning and 449.6 MB in the end (delta: -114.6 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. [2021-03-11 14:48:36,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 2.11 ms. Allocated memory is still 369.1 MB. Free memory was 350.3 MB in the beginning and 350.2 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.13 ms. Allocated memory is still 369.1 MB. Free memory was 348.7 MB in the beginning and 347.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 9.26 ms. Allocated memory is still 369.1 MB. Free memory was 347.3 MB in the beginning and 346.3 MB in the end (delta: 917.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 249.71 ms. Allocated memory is still 369.1 MB. Free memory was 346.3 MB in the beginning and 335.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 814297.13 ms. Allocated memory was 369.1 MB in the beginning and 530.6 MB in the end (delta: 161.5 MB). Free memory was 335.0 MB in the beginning and 449.6 MB in the end (delta: -114.6 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 282.5ms, 60 PlacesBefore, 52 PlacesAfterwards, 80 TransitionsBefore, 72 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 4368 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4368, positive: 4368, positive conditional: 0, positive unconditional: 4368, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 702, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 702, positive: 702, positive conditional: 0, positive unconditional: 702, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4368, positive: 3666, positive conditional: 0, positive unconditional: 3666, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 702, unknown conditional: 0, unknown unconditional: 702] , Statistics on independence cache: Total cache size (in pairs): 315, Positive cache size: 315, Positive conditional cache size: 0, Positive unconditional cache size: 315, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 27). Cancelled while BasicCegarLoop was constructing difference of abstraction (374states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 29 for 36ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 814096.8ms, OverallIterations: 1730, TraceHistogramMax: 1, EmptinessCheckTime: 907.0ms, AutomataDifference: 314631.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 492.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 113727 SDtfs, 177502 SDslu, 279336 SDs, 0 SdLazy, 88571 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58487.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15534 GetRequests, 1736 SyntacticMatches, 0 SemanticMatches, 13797 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8620 ImplicationChecksByTransitivity, 561609.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2316occurred in iteration=0, InterpolantAutomatonStates: 15525, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11370.7ms AutomataMinimizationTime, 1729 MinimizatonAttempts, 342783 StatesRemovedByMinimization, 1723 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 283.2ms SsaConstructionTime, 801.4ms SatisfiabilityAnalysisTime, 482025.7ms InterpolantComputationTime, 38060 NumberOfCodeBlocks, 38060 NumberOfCodeBlocksAsserted, 1730 NumberOfCheckSat, 36330 ConstructedInterpolants, 0 QuantifiedInterpolants, 946202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1730 InterpolantComputations, 1730 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown